mirror of
https://github.com/paboyle/Grid.git
synced 2025-11-04 14:04:32 +00:00
Hadrons: Kl2 contraction using sequential propagators
This commit is contained in:
Vera Guelpers
36
Hadrons/Modules/MContraction/WeakMesonDecayKl2.cc
Normal file
36
Hadrons/Modules/MContraction/WeakMesonDecayKl2.cc
Normal file
@@ -0,0 +1,36 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: Hadrons/Modules/MContraction/WeakMesonDecayKl2.cc
|
||||
|
||||
Copyright (C) 2015-2018
|
||||
|
||||
Author: Antonin Portelli <antonin.portelli@me.com>
|
||||
Author: Vera Guelpers <Vera.Guelpers@ed.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 <Hadrons/Modules/MContraction/WeakMesonDecayKl2.hpp>
|
||||
|
||||
using namespace Grid;
|
||||
using namespace Hadrons;
|
||||
using namespace MContraction;
|
||||
|
||||
template class Grid::Hadrons::MContraction::TWeakMesonDecayKl2<FIMPL>;
|
||||
|
||||
213
Hadrons/Modules/MContraction/WeakMesonDecayKl2.hpp
Normal file
213
Hadrons/Modules/MContraction/WeakMesonDecayKl2.hpp
Normal file
@@ -0,0 +1,213 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: Hadrons/Modules/MContraction/WeakMesonDecayKl2.hpp
|
||||
|
||||
Copyright (C) 2015-2018
|
||||
|
||||
Author: Antonin Portelli <antonin.portelli@me.com>
|
||||
Author: Vera Guelpers <Vera.Guelpers@ed.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_MContraction_WeakMesonDecayKl2_hpp_
|
||||
#define Hadrons_MContraction_WeakMesonDecayKl2_hpp_
|
||||
|
||||
#include <Hadrons/Global.hpp>
|
||||
#include <Hadrons/Module.hpp>
|
||||
#include <Hadrons/ModuleFactory.hpp>
|
||||
#include <Hadrons/Modules/MContraction/WeakHamiltonianNonEye.hpp>
|
||||
|
||||
BEGIN_HADRONS_NAMESPACE
|
||||
|
||||
/*
|
||||
* Kl2 contraction
|
||||
* -----------------------------
|
||||
*
|
||||
* contraction for Kl2 decay, including the lepton
|
||||
*
|
||||
* trace(q1*adj(q2)*g5*gL[mu]) * (gL[mu] * lepton)_{a,b}
|
||||
*
|
||||
* with open spinor indices (a,b) for the lepton part
|
||||
*
|
||||
* q1 lepton
|
||||
* /------------\ /------------
|
||||
* / \ /
|
||||
* / \H_W/
|
||||
* g_5 * * *
|
||||
* \ /
|
||||
* \ /
|
||||
* \____________/
|
||||
* q2
|
||||
*
|
||||
* * options:
|
||||
* - q1: input propagator 1 (string)
|
||||
* - q2: input propagator 2 (string)
|
||||
* - lepton: input lepton (string)
|
||||
*/
|
||||
|
||||
/******************************************************************************
|
||||
* TWeakMesonDecayKl2 *
|
||||
******************************************************************************/
|
||||
BEGIN_MODULE_NAMESPACE(MContraction)
|
||||
|
||||
class WeakMesonDecayKl2Par: Serializable
|
||||
{
|
||||
public:
|
||||
GRID_SERIALIZABLE_CLASS_MEMBERS(WeakMesonDecayKl2Par,
|
||||
std::string, q1,
|
||||
std::string, q2,
|
||||
std::string, lepton,
|
||||
std::string, output);
|
||||
};
|
||||
|
||||
template <typename FImpl>
|
||||
class TWeakMesonDecayKl2: public Module<WeakMesonDecayKl2Par>
|
||||
{
|
||||
public:
|
||||
FERM_TYPE_ALIASES(FImpl,);
|
||||
class Result: Serializable
|
||||
{
|
||||
public:
|
||||
GRID_SERIALIZABLE_CLASS_MEMBERS(Result,
|
||||
int, spinidx1,
|
||||
int, spinidx2,
|
||||
std::vector<Complex>, corr);
|
||||
};
|
||||
public:
|
||||
// constructor
|
||||
TWeakMesonDecayKl2(const std::string name);
|
||||
// destructor
|
||||
virtual ~TWeakMesonDecayKl2(void) {};
|
||||
// dependencies/products
|
||||
virtual std::vector<std::string> getInput(void);
|
||||
virtual std::vector<std::string> getOutput(void);
|
||||
protected:
|
||||
// execution
|
||||
virtual void setup(void);
|
||||
// execution
|
||||
virtual void execute(void);
|
||||
};
|
||||
|
||||
MODULE_REGISTER_TMP(WeakMesonDecayKl2, ARG(TWeakMesonDecayKl2<FIMPL>), MContraction);
|
||||
|
||||
/******************************************************************************
|
||||
* TWeakMesonDecayKl2 implementation *
|
||||
******************************************************************************/
|
||||
// constructor /////////////////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
TWeakMesonDecayKl2<FImpl>::TWeakMesonDecayKl2(const std::string name)
|
||||
: Module<WeakMesonDecayKl2Par>(name)
|
||||
{}
|
||||
|
||||
// dependencies/products ///////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
std::vector<std::string> TWeakMesonDecayKl2<FImpl>::getInput(void)
|
||||
{
|
||||
std::vector<std::string> input = {par().q1, par().q2, par().lepton};
|
||||
|
||||
return input;
|
||||
}
|
||||
|
||||
template <typename FImpl>
|
||||
std::vector<std::string> TWeakMesonDecayKl2<FImpl>::getOutput(void)
|
||||
{
|
||||
std::vector<std::string> output = {};
|
||||
|
||||
return output;
|
||||
}
|
||||
|
||||
// setup ////////////////////////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
void TWeakMesonDecayKl2<FImpl>::setup(void)
|
||||
{
|
||||
envTmpLat(LatticeComplex, "c");
|
||||
envTmpLat(PropagatorField, "prop_buf");
|
||||
envCreateLat(PropagatorField, getName());
|
||||
envTmpLat(LatticeComplex, "buf");
|
||||
}
|
||||
|
||||
// execution ///////////////////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
void TWeakMesonDecayKl2<FImpl>::execute(void)
|
||||
{
|
||||
LOG(Message) << "Computing QED Kl2 contractions '" << getName() << "' using"
|
||||
<< " quarks '" << par().q1 << "' and '" << par().q2 << "' and"
|
||||
<< "lepton '" << par().lepton << "'" << std::endl;
|
||||
|
||||
|
||||
auto &res = envGet(PropagatorField, getName()); res = zero;
|
||||
Gamma g5(Gamma::Algebra::Gamma5);
|
||||
int nt = env().getDim(Tp);
|
||||
|
||||
auto &q1 = envGet(PropagatorField, par().q1);
|
||||
auto &q2 = envGet(PropagatorField, par().q2);
|
||||
auto &lepton = envGet(PropagatorField, par().lepton);
|
||||
envGetTmp(LatticeComplex, buf);
|
||||
std::vector<TComplex> res_summed;
|
||||
envGetTmp(LatticeComplex, c);
|
||||
envGetTmp(PropagatorField, prop_buf);
|
||||
|
||||
std::vector<Result> result;
|
||||
result.resize(Ns*Ns);
|
||||
for (unsigned int i = 0; i < Ns*Ns ; ++i)
|
||||
{
|
||||
result[i].corr.resize(nt);
|
||||
}
|
||||
|
||||
|
||||
for (unsigned int mu = 0; mu < 4; ++mu)
|
||||
{
|
||||
c = zero;
|
||||
//hadronic part: trace(q1*adj(q2)*g5*gL[mu])
|
||||
c = trace(MAKE_CW_SUBDIAG(q1, q2, GammaL(Gamma::gmu[mu])));
|
||||
prop_buf = 1.;
|
||||
//multiply lepton part
|
||||
res += c * prop_buf * GammaL(Gamma::gmu[mu]) * lepton;
|
||||
}
|
||||
|
||||
//loop over spinor index of lepton part
|
||||
unsigned int i = 0;
|
||||
for (unsigned int s1 = 0; s1 < Ns ; ++s1)
|
||||
for (unsigned int s2 = 0; s2 < Ns ; ++s2)
|
||||
{
|
||||
buf = peekColour(peekSpin(res,s1,s2),0,0);
|
||||
|
||||
sliceSum(buf, res_summed, Tp);
|
||||
|
||||
for (unsigned int t = 0; t < nt; ++t)
|
||||
{
|
||||
result[i].corr[t] = TensorRemove(res_summed[t]);
|
||||
}
|
||||
result[i].spinidx1 = s1;
|
||||
result[i].spinidx2 = s2;
|
||||
|
||||
i+=1;
|
||||
}
|
||||
|
||||
saveResult(par().output, "weakdecay", result);
|
||||
}
|
||||
|
||||
END_MODULE_NAMESPACE
|
||||
|
||||
END_HADRONS_NAMESPACE
|
||||
|
||||
#endif // Hadrons_MContraction_WeakMesonDecayKl2_hpp_
|
||||
@@ -168,7 +168,10 @@ void TFreeProp<FImpl>::execute(void)
|
||||
}
|
||||
sol = zero;
|
||||
std::vector<double> twist = strToVec<double>(par().twist);
|
||||
if(twist.size() != Nd) HADRONS_ERROR(Size, "number of twist angles does not match number of dimensions");
|
||||
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
|
||||
|
||||
Reference in New Issue
Block a user