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Merge pull request #166 from guelpers/feature/hadrons

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Feature/hadrons
This commit is contained in:
Antonin Portelli
2018-05-28 11:49:46 +02:00
committed by GitHub
parent 255d4992e1 9d9692d439
commit 72abc34764
15 changed files with 790 additions and 24 deletions
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1
extras/Hadrons/Modules.hpp
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@@ -7,6 +7,7 @@
#include <Grid/Hadrons/Modules/MContraction/Gamma3pt.hpp>
#include <Grid/Hadrons/Modules/MContraction/WardIdentity.hpp>
#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonianEye.hpp>
#include <Grid/Hadrons/Modules/MFermion/FreeProp.hpp>
#include <Grid/Hadrons/Modules/MFermion/GaugeProp.hpp>
#include <Grid/Hadrons/Modules/MSource/SeqGamma.hpp>
#include <Grid/Hadrons/Modules/MSource/Point.hpp>

4
extras/Hadrons/Modules/MContraction/Meson.hpp
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@@ -45,8 +45,8 @@ BEGIN_HADRONS_NAMESPACE
- q1: input propagator 1 (string)
- q2: input propagator 2 (string)
- gammas: gamma products to insert at sink & source, pairs of gamma matrices
(space-separated strings) in angled brackets (i.e. <g_sink g_src>),
in a sequence (e.g. "<Gamma5 Gamma5><Gamma5 GammaT>").
(space-separated strings) in round brackets (i.e. (g_sink g_src)),
in a sequence (e.g. "(Gamma5 Gamma5)(Gamma5 GammaT)").
Special values: "all" - perform all possible contractions.
- sink: module to compute the sink to use in contraction (string).

36
extras/Hadrons/Modules/MFermion/FreeProp.cc Normal file
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@@ -0,0 +1,36 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: extras/Hadrons/Modules/MFermion/FreeProp.cc
Copyright (C) 2015-2018
Author: Antonin Portelli <antonin.portelli@me.com>
Author: Vera Guelpers <V.M.Guelpers@soton.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#include <Grid/Hadrons/Modules/MFermion/FreeProp.hpp>
using namespace Grid;
using namespace Hadrons;
using namespace MFermion;
template class Grid::Hadrons::MFermion::TFreeProp<FIMPL>;

189
extras/Hadrons/Modules/MFermion/FreeProp.hpp Normal file
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@@ -0,0 +1,189 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: extras/Hadrons/Modules/MFermion/FreeProp.hpp
Copyright (C) 2015-2018
Author: Vera Guelpers <V.M.Guelpers@soton.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#ifndef Hadrons_MFermion_FreeProp_hpp_
#define Hadrons_MFermion_FreeProp_hpp_
#include <Grid/Hadrons/Global.hpp>
#include <Grid/Hadrons/Module.hpp>
#include <Grid/Hadrons/ModuleFactory.hpp>
#include <Grid/Hadrons/Modules/MFermion/GaugeProp.hpp>
BEGIN_HADRONS_NAMESPACE
/******************************************************************************
* FreeProp *
******************************************************************************/
BEGIN_MODULE_NAMESPACE(MFermion)
class FreePropPar: Serializable
{
public:
GRID_SERIALIZABLE_CLASS_MEMBERS(FreePropPar,
std::string, source,
std::string, action,
double, mass,
std::string, twist);
};
template <typename FImpl>
class TFreeProp: public Module<FreePropPar>
{
public:
FGS_TYPE_ALIASES(FImpl,);
public:
// constructor
TFreeProp(const std::string name);
// destructor
virtual ~TFreeProp(void) {};
// dependency relation
virtual std::vector<std::string> getInput(void);
virtual std::vector<std::string> getOutput(void);
protected:
// setup
virtual void setup(void);
// execution
virtual void execute(void);
private:
unsigned int Ls_;
};
MODULE_REGISTER_TMP(FreeProp, TFreeProp<FIMPL>, MFermion);
/******************************************************************************
* TFreeProp implementation *
******************************************************************************/
// constructor /////////////////////////////////////////////////////////////////
template <typename FImpl>
TFreeProp<FImpl>::TFreeProp(const std::string name)
: Module<FreePropPar>(name)
{}
// dependencies/products ///////////////////////////////////////////////////////
template <typename FImpl>
std::vector<std::string> TFreeProp<FImpl>::getInput(void)
{
std::vector<std::string> in = {par().source, par().action};
return in;
}
template <typename FImpl>
std::vector<std::string> TFreeProp<FImpl>::getOutput(void)
{
std::vector<std::string> out = {getName(), getName() + "_5d"};
return out;
}
// setup ///////////////////////////////////////////////////////////////////////
template <typename FImpl>
void TFreeProp<FImpl>::setup(void)
{
Ls_ = env().getObjectLs(par().action);
envCreateLat(PropagatorField, getName());
envTmpLat(FermionField, "source", Ls_);
envTmpLat(FermionField, "sol", Ls_);
envTmpLat(FermionField, "tmp");
if (Ls_ > 1)
{
envCreateLat(PropagatorField, getName() + "_5d", Ls_);
}
}
// execution ///////////////////////////////////////////////////////////////////
template <typename FImpl>
void TFreeProp<FImpl>::execute(void)
{
LOG(Message) << "Computing free fermion propagator '" << getName() << "'"
<< std::endl;
std::string propName = (Ls_ == 1) ? getName() : (getName() + "_5d");
auto &prop = envGet(PropagatorField, propName);
auto &fullSrc = envGet(PropagatorField, par().source);
auto &mat = envGet(FMat, par().action);
RealD mass = par().mass;
envGetTmp(FermionField, source);
envGetTmp(FermionField, sol);
envGetTmp(FermionField, tmp);
LOG(Message) << "Calculating a free Propagator with mass " << mass
<< " using the action '" << par().action
<< "' on source '" << par().source << "'" << std::endl;
for (unsigned int s = 0; s < Ns; ++s)
for (unsigned int c = 0; c < FImpl::Dimension; ++c)
{
LOG(Message) << "Calculation for spin= " << s << ", color= " << c
<< std::endl;
// source conversion for 4D sources
if (!env().isObject5d(par().source))
{
if (Ls_ == 1)
{
PropToFerm<FImpl>(source, fullSrc, s, c);
}
else
{
PropToFerm<FImpl>(tmp, fullSrc, s, c);
make_5D(tmp, source, Ls_);
}
}
// source conversion for 5D sources
else
{
if (Ls_ != env().getObjectLs(par().source))
{
HADRONS_ERROR(Size, "Ls mismatch between quark action and source");
}
else
{
PropToFerm<FImpl>(source, fullSrc, s, c);
}
}
sol = zero;
std::vector<Real> twist = strToVec<Real>(par().twist);
if(twist.size() != Nd) HADRONS_ERROR(Size, "number of twist angles does not match number of dimensions");
mat.FreePropagator(source,sol,mass,twist);
FermToProp<FImpl>(prop, sol, s, c);
// create 4D propagators from 5D one if necessary
if (Ls_ > 1)
{
PropagatorField &p4d = envGet(PropagatorField, getName());
make_4D(sol, tmp, Ls_);
FermToProp<FImpl>(p4d, tmp, s, c);
}
}
}
END_MODULE_NAMESPACE
END_HADRONS_NAMESPACE
#endif // Hadrons_MFermion_FreeProp_hpp_

2
extras/Hadrons/modules.inc
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@@ -7,6 +7,7 @@ modules_cc =\
Modules/MContraction/WardIdentity.cc \
Modules/MContraction/DiscLoop.cc \
Modules/MContraction/Gamma3pt.cc \
Modules/MFermion/FreeProp.cc \
Modules/MFermion/GaugeProp.cc \
Modules/MSource/Point.cc \
Modules/MSource/Wall.cc \
@@ -57,6 +58,7 @@ modules_hpp =\
Modules/MContraction/Gamma3pt.hpp \
Modules/MContraction/WardIdentity.hpp \
Modules/MContraction/WeakHamiltonianEye.hpp \
Modules/MFermion/FreeProp.hpp \
Modules/MFermion/GaugeProp.hpp \
Modules/MSource/SeqGamma.hpp \
Modules/MSource/Point.hpp \

55
lib/qcd/action/fermion/DomainWallFermion.h
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@@ -8,6 +8,7 @@
Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: Vera Guelpers <V.M.Guelpers@soton.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -42,8 +43,58 @@ namespace Grid {
INHERIT_IMPL_TYPES(Impl);
public:
void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _m) {
this->MomentumSpacePropagatorHt(out,in,_m);
void FreePropagator(const FermionField &in,FermionField &out,RealD mass, std::vector<double> twist, bool fiveD) {
FermionField in_k(in._grid);
FermionField prop_k(in._grid);
FFT theFFT((GridCartesian *) in._grid);
//phase for boundary condition
ComplexField coor(in._grid);
ComplexField ph(in._grid); ph = zero;
FermionField in_buf(in._grid); in_buf = zero;
Complex ci(0.0,1.0);
assert(twist.size() == Nd);//check that twist is Nd
int shift = 0;
if(fiveD) shift = 1;
for(unsigned int nu = 0; nu < Nd; nu++)
{
// Shift coordinate lattice index by 1 to account for 5th dimension.
LatticeCoordinate(coor, nu + shift);
ph = ph + twist[nu]*coor*((1./(in._grid->_fdimensions[nu+shift])));
}
in_buf = exp((Real)(2.0*M_PI)*ci*ph*(-1.0))*in;
if(fiveD){//FFT only on temporal and spatial dimensions
std::vector<int> mask(Nd+1,1); mask[0] = 0;
theFFT.FFT_dim_mask(in_k,in_buf,mask,FFT::forward);
this->MomentumSpacePropagatorHt_5d(prop_k,in_k,mass,twist);
theFFT.FFT_dim_mask(out,prop_k,mask,FFT::backward);
}
else{
theFFT.FFT_all_dim(in_k,in,FFT::forward);
this->MomentumSpacePropagatorHt(prop_k,in_k,mass,twist);
theFFT.FFT_all_dim(out,prop_k,FFT::backward);
}
//phase for boundary condition
out = out * exp((Real)(2.0*M_PI)*ci*ph);
};
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass,std::vector<double> twist) {
bool fiveD = true; //5d propagator by default
FreePropagator(in,out,mass,twist,fiveD);
};
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass, bool fiveD) {
std::vector<double> twist(Nd,0.0); //default: periodic boundarys in all directions
FreePropagator(in,out,mass,twist,fiveD);
};
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass) {
bool fiveD = true; //5d propagator by default
std::vector<double> twist(Nd,0.0); //default: periodic boundarys in all directions
FreePropagator(in,out,mass,twist,fiveD);
};
virtual void Instantiatable(void) {};

30
lib/qcd/action/fermion/FermionOperator.h
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@@ -9,6 +9,7 @@
Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
Author: Vera Guelpers <V.M.Guelpers@soton.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -95,17 +96,38 @@ namespace Grid {
virtual void Mdir (const FermionField &in, FermionField &out,int dir,int disp)=0; // case by case Wilson, Clover, Cayley, ContFrac, PartFrac
virtual void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _m) { assert(0);};
virtual void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _m,std::vector<double> twist) { assert(0);};
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass) {
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass,std::vector<double> twist) {
FFT theFFT((GridCartesian *) in._grid);
FermionField in_k(in._grid);
FermionField prop_k(in._grid);
theFFT.FFT_all_dim(in_k,in,FFT::forward);
this->MomentumSpacePropagator(prop_k,in_k,mass);
//phase for boundary condition
ComplexField coor(in._grid);
ComplexField ph(in._grid); ph = zero;
FermionField in_buf(in._grid); in_buf = zero;
Complex ci(0.0,1.0);
assert(twist.size() == Nd);//check that twist is Nd
for(unsigned int nu = 0; nu < Nd; nu++)
{
LatticeCoordinate(coor, nu);
ph = ph + twist[nu]*coor*((1./(in._grid->_fdimensions[nu])));
}
in_buf = exp((Real)(2.0*M_PI)*ci*ph*(-1.0))*in;
theFFT.FFT_all_dim(in_k,in_buf,FFT::forward);
this->MomentumSpacePropagator(prop_k,in_k,mass,twist);
theFFT.FFT_all_dim(out,prop_k,FFT::backward);
//phase for boundary condition
out = out * exp((Real)(2.0*M_PI)*ci*ph);
};
virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass) {
std::vector<double> twist(Nd,0.0); //default: periodic boundarys in all directions
FreePropagator(in,out,mass,twist);
};
///////////////////////////////////////////////

4
lib/qcd/action/fermion/OverlapWilsonCayleyTanhFermion.h
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@@ -42,8 +42,8 @@ namespace Grid {
INHERIT_IMPL_TYPES(Impl);
public:
void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _m) {
this->MomentumSpacePropagatorHw(out,in,_m);
void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _m,std::vector<double> twist) {
this->MomentumSpacePropagatorHw(out,in,_m,twist);
};
// Constructors

3
lib/qcd/action/fermion/WilsonFermion.cc
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@@ -162,7 +162,7 @@ void WilsonFermion<Impl>::MooeeInvDag(const FermionField &in, FermionField &out)
MooeeInv(in,out);
}
template<class Impl>
void WilsonFermion<Impl>::MomentumSpacePropagator(FermionField &out, const FermionField &in,RealD _m)
void WilsonFermion<Impl>::MomentumSpacePropagator(FermionField &out, const FermionField &in,RealD _m,std::vector<double> twist)
{
typedef typename FermionField::vector_type vector_type;
typedef typename FermionField::scalar_type ScalComplex;
@@ -195,6 +195,7 @@ void WilsonFermion<Impl>::MomentumSpacePropagator(FermionField &out, const Fermi
RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
kmu = TwoPiL * kmu;
kmu = kmu + TwoPiL * one * twist[mu];//momentum for twisted boundary conditions
wilson = wilson + 2.0*sin(kmu*0.5)*sin(kmu*0.5); // Wilson term

2
lib/qcd/action/fermion/WilsonFermion.h
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@@ -96,7 +96,7 @@ class WilsonFermion : public WilsonKernels<Impl>, public WilsonFermionStatic {
virtual void MooeeInv(const FermionField &in, FermionField &out);
virtual void MooeeInvDag(const FermionField &in, FermionField &out);
virtual void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _mass) ;
virtual void MomentumSpacePropagator(FermionField &out,const FermionField &in,RealD _mass,std::vector<double> twist) ;
////////////////////////
// Derivative interface

227
lib/qcd/action/fermion/WilsonFermion5D.cc
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@@ -13,6 +13,7 @@ Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
Author: paboyle <paboyle@ph.ed.ac.uk>
Author: Guido Cossu <guido.cossu@ed.ac.uk>
Author: Andrew Lawson <andrew.lawson1991@gmail.com>
Author: Vera Guelpers <V.M.Guelpers@soton.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -563,7 +564,221 @@ void WilsonFermion5D<Impl>::DW(const FermionField &in, FermionField &out,int dag
}
template<class Impl>
void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt(FermionField &out,const FermionField &in, RealD mass)
void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt_5d(FermionField &out,const FermionField &in, RealD mass,std::vector<double> twist)
{
// what type LatticeComplex
GridBase *_grid = _FourDimGrid;
GridBase *_5dgrid = _FiveDimGrid;
conformable(_5dgrid,out._grid);
FermionField PRsource(_5dgrid);
FermionField PLsource(_5dgrid);
FermionField buf1_4d(_grid);
FermionField buf2_4d(_grid);
FermionField GR(_5dgrid);
FermionField GL(_5dgrid);
FermionField bufL_4d(_grid);
FermionField bufR_4d(_grid);
unsigned int Ls = in._grid->_rdimensions[0];
typedef typename FermionField::vector_type vector_type;
typedef typename FermionField::scalar_type ScalComplex;
typedef iSinglet<ScalComplex> Tcomplex;
typedef Lattice<iSinglet<vector_type> > LatComplex;
Gamma::Algebra Gmu [] = {
Gamma::Algebra::GammaX,
Gamma::Algebra::GammaY,
Gamma::Algebra::GammaZ,
Gamma::Algebra::GammaT
};
Gamma g5(Gamma::Algebra::Gamma5);
std::vector<int> latt_size = _grid->_fdimensions;
LatComplex sk(_grid); sk = zero;
LatComplex sk2(_grid); sk2= zero;
LatComplex W(_grid); W= zero;
LatComplex a(_grid); a= zero;
LatComplex one (_grid); one = ScalComplex(1.0,0.0);
LatComplex cosha(_grid);
LatComplex kmu(_grid);
LatComplex Wea(_grid);
LatComplex Wema(_grid);
LatComplex sinha(_grid);
LatComplex sinhaLs(_grid);
LatComplex coshaLs(_grid);
LatComplex A(_grid);
LatComplex F(_grid);
LatComplex App(_grid);
LatComplex Amm(_grid);
LatComplex Bpp(_grid);
LatComplex Bmm(_grid);
LatComplex ABpm(_grid); //Apm=Amp=Bpm=Bmp
LatComplex signW(_grid);
ScalComplex ci(0.0,1.0);
for(int mu=0;mu<Nd;mu++) {
LatticeCoordinate(kmu,mu);
RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
kmu = TwoPiL * kmu;
kmu = kmu + TwoPiL * one * twist[mu];//momentum for twisted boundary conditions
sk2 = sk2 + 2.0*sin(kmu*0.5)*sin(kmu*0.5);
sk = sk + sin(kmu) *sin(kmu);
}
W = one - M5 + sk2;
////////////////////////////////////////////
// Cosh alpha -> alpha
////////////////////////////////////////////
cosha = (one + W*W + sk) / (abs(W)*2.0);
// FIXME Need a Lattice acosh
for(int idx=0;idx<_grid->lSites();idx++){
std::vector<int> lcoor(Nd);
Tcomplex cc;
RealD sgn;
_grid->LocalIndexToLocalCoor(idx,lcoor);
peekLocalSite(cc,cosha,lcoor);
assert((double)real(cc)>=1.0);
assert(fabs((double)imag(cc))<=1.0e-15);
cc = ScalComplex(::acosh(real(cc)),0.0);
pokeLocalSite(cc,a,lcoor);
}
Wea = ( exp( a) * abs(W) );
Wema= ( exp(-a) * abs(W) );
sinha = 0.5*(exp( a) - exp(-a));
sinhaLs = 0.5*(exp( a*Ls) - exp(-a*Ls));
coshaLs = 0.5*(exp( a*Ls) + exp(-a*Ls));
A = one / (abs(W) * sinha * 2.0) * one / (sinhaLs * 2.0);
F = exp( a*Ls) * (one - Wea + (Wema - one) * mass*mass);
F = F + exp(-a*Ls) * (Wema - one + (one - Wea) * mass*mass);
F = F - abs(W) * sinha * 4.0 * mass;
Bpp = (A/F) * (exp(-a*Ls*2.0) - one) * (one - Wema) * (one - mass*mass * one);
Bmm = (A/F) * (one - exp(a*Ls*2.0)) * (one - Wea) * (one - mass*mass * one);
App = (A/F) * (exp(-a*Ls*2.0) - one) * exp(-a) * (exp(-a) - abs(W)) * (one - mass*mass * one);
Amm = (A/F) * (one - exp(a*Ls*2.0)) * exp(a) * (exp(a) - abs(W)) * (one - mass*mass * one);
ABpm = (A/F) * abs(W) * sinha * 2.0 * (one + mass * coshaLs * 2.0 + mass*mass * one);
//P+ source, P- source
PRsource = (in + g5 * in) * 0.5;
PLsource = (in - g5 * in) * 0.5;
//calculate GR, GL
for(unsigned int ss=1;ss<=Ls;ss++)
{
bufR_4d = zero;
bufL_4d = zero;
for(unsigned int tt=1;tt<=Ls;tt++)
{
//possible sign if W<0
if((ss+tt)%2==1) signW = abs(W)/W;
else signW = one;
unsigned int f = (ss > tt) ? ss-tt : tt-ss; //f = abs(ss-tt)
//GR
buf1_4d = zero;
ExtractSlice(buf1_4d, PRsource, (tt-1), 0);
//G(s,t)
bufR_4d = bufR_4d + A * exp(a*Ls) * exp(-a*f) * signW * buf1_4d + A * exp(-a*Ls) * exp(a*f) * signW * buf1_4d;
//A++*exp(a(s+t))
bufR_4d = bufR_4d + App * exp(a*ss) * exp(a*tt) * signW * buf1_4d ;
//A+-*exp(a(s-t))
bufR_4d = bufR_4d + ABpm * exp(a*ss) * exp(-a*tt) * signW * buf1_4d ;
//A-+*exp(a(-s+t))
bufR_4d = bufR_4d + ABpm * exp(-a*ss) * exp(a*tt) * signW * buf1_4d ;
//A--*exp(a(-s-t))
bufR_4d = bufR_4d + Amm * exp(-a*ss) * exp(-a*tt) * signW * buf1_4d ;
//GL
buf2_4d = zero;
ExtractSlice(buf2_4d, PLsource, (tt-1), 0);
//G(s,t)
bufL_4d = bufL_4d + A * exp(a*Ls) * exp(-a*f) * signW * buf2_4d + A * exp(-a*Ls) * exp(a*f) * signW * buf2_4d;
//B++*exp(a(s+t))
bufL_4d = bufL_4d + Bpp * exp(a*ss) * exp(a*tt) * signW * buf2_4d ;
//B+-*exp(a(s-t))
bufL_4d = bufL_4d + ABpm * exp(a*ss) * exp(-a*tt) * signW * buf2_4d ;
//B-+*exp(a(-s+t))
bufL_4d = bufL_4d + ABpm * exp(-a*ss) * exp(a*tt) * signW * buf2_4d ;
//B--*exp(a(-s-t))
bufL_4d = bufL_4d + Bmm * exp(-a*ss) * exp(-a*tt) * signW * buf2_4d ;
}
InsertSlice(bufR_4d, GR, (ss-1), 0);
InsertSlice(bufL_4d, GL, (ss-1), 0);
}
//calculate propagator
for(unsigned int ss=1;ss<=Ls;ss++)
{
bufR_4d = zero;
bufL_4d = zero;
//(i*gamma_mu*sin(p_mu) - W)*(GL*P- source)
buf1_4d = zero;
ExtractSlice(buf1_4d, GL, (ss-1), 0);
buf2_4d = zero;
for(int mu=0;mu<Nd;mu++) {
LatticeCoordinate(kmu,mu);
RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
kmu = TwoPiL * kmu + TwoPiL * one * twist[mu];//twisted boundary
buf2_4d = buf2_4d + sin(kmu)*ci*(Gamma(Gmu[mu])*buf1_4d);
}
bufL_4d = buf2_4d - W * buf1_4d;
//(i*gamma_mu*sin(p_mu) - W)*(GR*P+ source)
buf1_4d = zero;
ExtractSlice(buf1_4d, GR, (ss-1), 0);
buf2_4d = zero;
for(int mu=0;mu<Nd;mu++) {
LatticeCoordinate(kmu,mu);
RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
kmu = TwoPiL * kmu + TwoPiL * one * twist[mu];//twisted boundary
buf2_4d = buf2_4d + sin(kmu)*ci*(Gamma(Gmu[mu])*buf1_4d);
}
bufR_4d = buf2_4d - W * buf1_4d;
//(delta(s-1,u) - m*delta(s,1)*delta(u,Ls))*GL
if(ss==1){
ExtractSlice(buf1_4d, GL, (Ls-1), 0);
bufL_4d = bufL_4d - mass*buf1_4d;
}
else {
ExtractSlice(buf1_4d, GL, (ss-2), 0);
bufL_4d = bufL_4d + buf1_4d;
}
//(delta(s+1,u) - m*delta(s,Ls)*delta(u,1))*GR
if(ss==Ls){
ExtractSlice(buf1_4d, GR, 0, 0);
bufR_4d = bufR_4d - mass*buf1_4d;
}
else {
ExtractSlice(buf1_4d, GR, ss, 0);
bufR_4d = bufR_4d + buf1_4d;
}
buf1_4d = bufL_4d + bufR_4d;
InsertSlice(buf1_4d, out, (ss-1), 0);
}
out = out * (-1.0);
}
template<class Impl>
void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt(FermionField &out,const FermionField &in, RealD mass,std::vector<double> twist)
{
// what type LatticeComplex
GridBase *_grid = _FourDimGrid;
@@ -606,6 +821,7 @@ void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt(FermionField &out,const Fe
RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
kmu = TwoPiL * kmu;
kmu = kmu + TwoPiL * one * twist[mu];//momentum for twisted boundary conditions
sk2 = sk2 + 2.0*sin(kmu*0.5)*sin(kmu*0.5);
sk = sk + sin(kmu) *sin(kmu);
@@ -619,7 +835,7 @@ void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt(FermionField &out,const Fe
////////////////////////////////////////////
// Cosh alpha -> alpha
////////////////////////////////////////////
cosha = (one + W*W + sk) / (W*2.0);
cosha = (one + W*W + sk) / (abs(W)*2.0);
// FIXME Need a Lattice acosh
for(int idx=0;idx<_grid->lSites();idx++){
@@ -634,8 +850,8 @@ void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt(FermionField &out,const Fe
pokeLocalSite(cc,a,lcoor);
}
Wea = ( exp( a) * W );
Wema= ( exp(-a) * W );
Wea = ( exp( a) * abs(W) );
Wema= ( exp(-a) * abs(W) );
num = num + ( one - Wema ) * mass * in;
denom= ( Wea - one ) + mass*mass * (one - Wema);
@@ -643,7 +859,7 @@ void WilsonFermion5D<Impl>::MomentumSpacePropagatorHt(FermionField &out,const Fe
}
template<class Impl>
void WilsonFermion5D<Impl>::MomentumSpacePropagatorHw(FermionField &out,const FermionField &in,RealD mass)
void WilsonFermion5D<Impl>::MomentumSpacePropagatorHw(FermionField &out,const FermionField &in,RealD mass,std::vector<double> twist)
{
Gamma::Algebra Gmu [] = {
Gamma::Algebra::GammaX,
@@ -683,6 +899,7 @@ void WilsonFermion5D<Impl>::MomentumSpacePropagatorHw(FermionField &out,const Fe
RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
kmu = TwoPiL * kmu;
kmu = kmu + TwoPiL * one * twist[mu];//momentum for twisted boundary conditions
sk2 = sk2 + 2.0*sin(kmu*0.5)*sin(kmu*0.5);
sk = sk + sin(kmu)*sin(kmu);

5
lib/qcd/action/fermion/WilsonFermion5D.h
View File

@@ -118,8 +118,9 @@ namespace QCD {
virtual void DhopDerivEO(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
virtual void DhopDerivOE(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
void MomentumSpacePropagatorHt(FermionField &out,const FermionField &in,RealD mass) ;
void MomentumSpacePropagatorHw(FermionField &out,const FermionField &in,RealD mass) ;
void MomentumSpacePropagatorHt_5d(FermionField &out,const FermionField &in,RealD mass,std::vector<double> twist) ;
void MomentumSpacePropagatorHt(FermionField &out,const FermionField &in,RealD mass,std::vector<double> twist) ;
void MomentumSpacePropagatorHw(FermionField &out,const FermionField &in,RealD mass,std::vector<double> twist) ;
// Implement hopping term non-hermitian hopping term; half cb or both
// Implement s-diagonal DW

3
tests/core/Test_fft.cc
View File

@@ -309,7 +309,8 @@ int main (int argc, char ** argv)
// Momentum space prop
std::cout << " Solving by FFT and Feynman rules" <<std::endl;
Ddwf.FreePropagator(src,ref,mass) ;
bool fiveD = false; //calculate 4d free propagator
Ddwf.FreePropagator(src,ref,mass,fiveD) ;
Gamma G5(Gamma::Algebra::Gamma5);

8
tests/hadrons/Test_QED.cc
View File

@@ -190,7 +190,7 @@ int main(int argc, char *argv[])
mesPar.output = "QED/pt_" + flavour[i] + flavour[j];
mesPar.q1 = "Qpt_" + flavour[i];
mesPar.q2 = "Qpt_" + flavour[j];
mesPar.gammas = "<Gamma5 Gamma5>";
mesPar.gammas = "(Gamma5 Gamma5)";
mesPar.sink = "sink";
application.createModule<MContraction::Meson>("meson_pt_"
+ flavour[i] + flavour[j],
@@ -204,7 +204,7 @@ int main(int argc, char *argv[])
+ flavour[i] + "__" + flavour[j];
mesPar_seq_T.q1 = "Qpt_" + flavour[i] + "_seq_T" + flavour[i];
mesPar_seq_T.q2 = "Qpt_" + flavour[j];
mesPar_seq_T.gammas = "<Gamma5 Gamma5>";
mesPar_seq_T.gammas = "(Gamma5 Gamma5)";
mesPar_seq_T.sink = "sink";
application.createModule<MContraction::Meson>("meson_tadpole_pt_" +
flavour[i] + "_seq_T"
@@ -220,7 +220,7 @@ int main(int argc, char *argv[])
+ flavour[j];
mesPar_seq_E.q1 = "Qpt_" + flavour[i] + "_seq_V_ph_" + flavour[i];
mesPar_seq_E.q2 = "Qpt_" + flavour[j] + "_seq_V_ph_" + flavour[j];
mesPar_seq_E.gammas = "<Gamma5 Gamma5>";
mesPar_seq_E.gammas = "(Gamma5 Gamma5)";
mesPar_seq_E.sink = "sink";
application.createModule<MContraction::Meson>("meson_exchange_pt_"
+ flavour[i] + "_seq_V_ph_" + flavour[i]
@@ -237,7 +237,7 @@ int main(int argc, char *argv[])
mesPar_seq_S.q1 = "Qpt_" + flavour[i] + "_seq_V_ph_" + flavour[i]
+ "_seq_V_ph_" + flavour[i];
mesPar_seq_S.q2 = "Qpt_" + flavour[j];
mesPar_seq_S.gammas = "<Gamma5 Gamma5>";
mesPar_seq_S.gammas = "(Gamma5 Gamma5)";
mesPar_seq_S.sink = "sink";
application.createModule<MContraction::Meson>("meson_selfenergy_pt_"
+ flavour[i] + "_seq_V_ph_"

245
tests/hadrons/Test_free_prop.cc Normal file
View File

@@ -0,0 +1,245 @@
/*******************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: tests/hadrons/Test_free_prop.cc
Copyright (C) 2015-2018
Author: Antonin Portelli <antonin.portelli@me.com>
Author: Vera Guelpers <v.m.guelpers@soton.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution
directory.
*******************************************************************************/
#include <Grid/Hadrons/Application.hpp>
#include <Grid/Hadrons/Modules.hpp>
using namespace Grid;
using namespace Hadrons;
int main(int argc, char *argv[])
{
// initialization //////////////////////////////////////////////////////////
Grid_init(&argc, &argv);
HadronsLogError.Active(GridLogError.isActive());
HadronsLogWarning.Active(GridLogWarning.isActive());
HadronsLogMessage.Active(GridLogMessage.isActive());
HadronsLogIterative.Active(GridLogIterative.isActive());
HadronsLogDebug.Active(GridLogDebug.isActive());
LOG(Message) << "Grid initialized" << std::endl;
// run setup ///////////////////////////////////////////////////////////////
Application application;
std::vector<std::string> flavour = {"h"}; //{"l", "s", "c1", "c2", "c3"};
std::vector<double> mass = {.2}; //{.01, .04, .2 , .25 , .3 };
std::vector<std::string> lepton_flavour = {"mu"};
std::vector<double> lepton_mass = {.2};
unsigned int nt = GridDefaultLatt()[Tp];
// global parameters
Application::GlobalPar globalPar;
globalPar.trajCounter.start = 1500;
globalPar.trajCounter.end = 1520;
globalPar.trajCounter.step = 20;
globalPar.seed = "1 2 3 4";
application.setPar(globalPar);
// gauge field
application.createModule<MGauge::Unit>("gauge");
// unit gauge field for lepton
application.createModule<MGauge::Unit>("free_gauge");
// pt source
MSource::Point::Par ptPar;
ptPar.position = "0 0 0 0";
application.createModule<MSource::Point>("pt", ptPar);
// sink
MSink::Point::Par sinkPar;
sinkPar.mom = "0 0 0";
application.createModule<MSink::ScalarPoint>("sink", sinkPar);
// set fermion boundary conditions to be periodic space, antiperiodic time.
std::string boundary = "1 1 1 -1";
//Propagators from FFT and Feynman rules
for (unsigned int i = 0; i < lepton_mass.size(); ++i)
{
//DWF actions
MAction::DWF::Par actionPar_lep;
actionPar_lep.gauge = "free_gauge";
actionPar_lep.Ls = 8;
actionPar_lep.M5 = 1.8;
actionPar_lep.mass = lepton_mass[i];
actionPar_lep.boundary = boundary;
application.createModule<MAction::DWF>("free_DWF_" + lepton_flavour[i], actionPar_lep);
//DWF free propagators
MFermion::FreeProp::Par freePar;
freePar.source = "pt";
freePar.action = "free_DWF_" + lepton_flavour[i];
freePar.twist = "0 0 0 0.5";
freePar.mass = lepton_mass[i];
application.createModule<MFermion::FreeProp>("Lpt_" + lepton_flavour[i],
freePar);
//Wilson actions
MAction::Wilson::Par actionPar_lep_W;
actionPar_lep_W.gauge = "free_gauge";
actionPar_lep_W.mass = lepton_mass[i];
actionPar_lep_W.boundary = boundary;
application.createModule<MAction::Wilson>("free_W_" + lepton_flavour[i], actionPar_lep_W);
//Wilson free propagators
MFermion::FreeProp::Par freePar_W;
freePar_W.source = "pt";
freePar_W.action = "free_W_" + lepton_flavour[i];
freePar_W.twist = "0 0 0 0.5";
freePar_W.mass = lepton_mass[i];
application.createModule<MFermion::FreeProp>("W_Lpt_" + lepton_flavour[i],
freePar_W);
}
//Propagators from inversion
for (unsigned int i = 0; i < flavour.size(); ++i)
{
//DWF actions
MAction::DWF::Par actionPar;
actionPar.gauge = "gauge";
actionPar.Ls = 8;
actionPar.M5 = 1.8;
actionPar.mass = mass[i];
actionPar.boundary = boundary;
application.createModule<MAction::DWF>("DWF_" + flavour[i], actionPar);
// solvers
MSolver::RBPrecCG::Par solverPar;
solverPar.action = "DWF_" + flavour[i];
solverPar.residual = 1.0e-8;
solverPar.maxIteration = 10000;
application.createModule<MSolver::RBPrecCG>("CG_" + flavour[i],
solverPar);
//DWF propagators
MFermion::GaugeProp::Par quarkPar;
quarkPar.solver = "CG_" + flavour[i];
quarkPar.source = "pt";
application.createModule<MFermion::GaugeProp>("Qpt_" + flavour[i],
quarkPar);
//Wilson actions
MAction::Wilson::Par actionPar_W;
actionPar_W.gauge = "gauge";
actionPar_W.mass = mass[i];
actionPar_W.boundary = boundary;
application.createModule<MAction::Wilson>("W_" + flavour[i], actionPar_W);
// solvers
MSolver::RBPrecCG::Par solverPar_W;
solverPar_W.action = "W_" + flavour[i];
solverPar_W.residual = 1.0e-8;
solverPar_W.maxIteration = 10000;
application.createModule<MSolver::RBPrecCG>("W_CG_" + flavour[i],
solverPar_W);
//Wilson propagators
MFermion::GaugeProp::Par quarkPar_W;
quarkPar_W.solver = "W_CG_" + flavour[i];
quarkPar_W.source = "pt";
application.createModule<MFermion::GaugeProp>("W_Qpt_" + flavour[i],
quarkPar_W);
}
//2pt contraction for Propagators from FFT and Feynman rules
for (unsigned int i = 0; i < lepton_flavour.size(); ++i)
for (unsigned int j = i; j < lepton_flavour.size(); ++j)
{
//2pt function contraction DWF
MContraction::Meson::Par freemesPar;
freemesPar.output = "2pt_free/DWF_L_pt_" + lepton_flavour[i] + lepton_flavour[j];
freemesPar.q1 = "Lpt_" + lepton_flavour[i];
freemesPar.q2 = "Lpt_" + lepton_flavour[j];
freemesPar.gammas = "(Gamma5 Gamma5)";
freemesPar.sink = "sink";
application.createModule<MContraction::Meson>("meson_L_pt_"
+ lepton_flavour[i] + lepton_flavour[j],
freemesPar);
//2pt function contraction Wilson
MContraction::Meson::Par freemesPar_W;
freemesPar_W.output = "2pt_free/W_L_pt_" + lepton_flavour[i] + lepton_flavour[j];
freemesPar_W.q1 = "W_Lpt_" + lepton_flavour[i];
freemesPar_W.q2 = "W_Lpt_" + lepton_flavour[j];
freemesPar_W.gammas = "(Gamma5 Gamma5)";
freemesPar_W.sink = "sink";
application.createModule<MContraction::Meson>("W_meson_L_pt_"
+ lepton_flavour[i] + lepton_flavour[j],
freemesPar_W);
}
//2pt contraction for Propagators from inverion
for (unsigned int i = 0; i < flavour.size(); ++i)
for (unsigned int j = i; j < flavour.size(); ++j)
{
//2pt function contraction DWF
MContraction::Meson::Par mesPar;
mesPar.output = "2pt_free/DWF_pt_" + flavour[i] + flavour[j];
mesPar.q1 = "Qpt_" + flavour[i];
mesPar.q2 = "Qpt_" + flavour[j];
mesPar.gammas = "(Gamma5 Gamma5)";
mesPar.sink = "sink";
application.createModule<MContraction::Meson>("meson_pt_"
+ flavour[i] + flavour[j],
mesPar);
//2pt function contraction Wilson
MContraction::Meson::Par mesPar_W;
mesPar_W.output = "2pt_free/W_pt_" + flavour[i] + flavour[j];
mesPar_W.q1 = "W_Qpt_" + flavour[i];
mesPar_W.q2 = "W_Qpt_" + flavour[j];
mesPar_W.gammas = "(Gamma5 Gamma5)";
mesPar_W.sink = "sink";
application.createModule<MContraction::Meson>("W_meson_pt_"
+ flavour[i] + flavour[j],
mesPar_W);
}
// execution
application.saveParameterFile("free_prop.xml");
application.run();
// epilogue
LOG(Message) << "Grid is finalizing now" << std::endl;
Grid_finalize();
return EXIT_SUCCESS;
}