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Grid/lib/qcd/action/fermion/WilsonCloverFermion.h

205 lines
7.8 KiB
C++

/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/qcd/action/fermion/WilsonCloverFermion.h
Copyright (C) 2017
Author: paboyle <paboyle@ph.ed.ac.uk>
Author: Guido Cossu <guido.cossu@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 GRID_QCD_WILSON_CLOVER_FERMION_H
#define GRID_QCD_WILSON_CLOVER_FERMION_H
#include <Grid/Grid.h>
namespace Grid
{
namespace QCD
{
template <class Impl>
class WilsonCloverFermion : public WilsonFermion<Impl>
{
public:
// Types definitions
INHERIT_IMPL_TYPES(Impl);
template <typename vtype> using iImplClover = iScalar<iMatrix<iMatrix<vtype, Impl::Dimension>, Ns> >;
typedef iImplClover<Simd> SiteCloverType;
typedef Lattice<SiteCloverType> CloverFieldType;
public:
typedef WilsonFermion<Impl> WilsonBase;
virtual void Instantiatable(void){};
// Constructors
WilsonCloverFermion(GaugeField &_Umu, GridCartesian &Fgrid,
GridRedBlackCartesian &Hgrid,
RealD _mass,
RealD _csw,
const ImplParams &p = ImplParams()) : WilsonFermion<Impl>(_Umu,
Fgrid,
Hgrid,
_mass, p),
CloverTerm(&Fgrid),
CloverTermInv(&Fgrid),
CloverTermEven(&Hgrid),
CloverTermOdd(&Hgrid),
CloverTermInvEven(&Hgrid),
CloverTermInvOdd(&Hgrid),
CloverTermDagEven(&Hgrid), //test
CloverTermDagOdd(&Hgrid), //test
CloverTermInvDagEven(&Hgrid), //test
CloverTermInvDagOdd(&Hgrid) //test
{
csw = _csw;
assert(Nd == 4); // require 4 dimensions
}
virtual RealD M(const FermionField &in, FermionField &out);
virtual RealD Mdag(const FermionField &in, FermionField &out);
virtual void Mooee(const FermionField &in, FermionField &out);
virtual void MooeeDag(const FermionField &in, FermionField &out);
virtual void MooeeInv(const FermionField &in, FermionField &out);
virtual void MooeeInvDag(const FermionField &in, FermionField &out);
virtual void MooeeInternal(const FermionField &in, FermionField &out, int dag, int inv);
virtual void MDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag);
virtual void MooDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag);
virtual void MeeDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag);
void ImportGauge(const GaugeField &_Umu);
private:
// here fixing the 4 dimensions, make it more general?
RealD csw; // Clover coefficient
CloverFieldType CloverTerm=zero, CloverTermInv=zero; // Clover term
CloverFieldType CloverTermEven=zero, CloverTermOdd=zero; // Clover term EO
CloverFieldType CloverTermInvEven=zero, CloverTermInvOdd=zero; // Clover term Inv EO
CloverFieldType CloverTermDagEven=zero, CloverTermDagOdd=zero; // Clover term Dag EO
CloverFieldType CloverTermInvDagEven=zero, CloverTermInvDagOdd=zero; // Clover term Inv Dag EO
// eventually these two can be compressed into 6x6 blocks instead of the 12x12
// using the DeGrand-Rossi basis for the gamma matrices
CloverFieldType fillCloverYZ(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);
T = zero;
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 1) = timesMinusI(F._odata[i]()());
T._odata[i]()(1, 0) = timesMinusI(F._odata[i]()());
T._odata[i]()(2, 3) = timesMinusI(F._odata[i]()());
T._odata[i]()(3, 2) = timesMinusI(F._odata[i]()());
}
return T;
}
CloverFieldType fillCloverXZ(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);
T = zero;
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 1) = -F._odata[i]()();
T._odata[i]()(1, 0) = F._odata[i]()();
T._odata[i]()(2, 3) = -F._odata[i]()();
T._odata[i]()(3, 2) = F._odata[i]()();
}
return T;
}
CloverFieldType fillCloverXY(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);
T = zero;
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 0) = timesMinusI(F._odata[i]()());
T._odata[i]()(1, 1) = timesI(F._odata[i]()());
T._odata[i]()(2, 2) = timesMinusI(F._odata[i]()());
T._odata[i]()(3, 3) = timesI(F._odata[i]()());
}
return T;
}
CloverFieldType fillCloverXT(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);
T = zero;
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 1) = timesI(F._odata[i]()()); //fixed
T._odata[i]()(1, 0) = timesI(F._odata[i]()()); //fixed
T._odata[i]()(2, 3) = timesMinusI(F._odata[i]()()); //fixed
T._odata[i]()(3, 2) = timesMinusI(F._odata[i]()()); //fixed
}
return T;
}
CloverFieldType fillCloverYT(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);
T = zero;
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 1) = -(F._odata[i]()()); //fixed
T._odata[i]()(1, 0) = (F._odata[i]()()); //fixed
T._odata[i]()(2, 3) = (F._odata[i]()()); //fixed
T._odata[i]()(3, 2) = -(F._odata[i]()()); //fixed
}
return T;
}
CloverFieldType fillCloverZT(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);
T = zero;
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 0) = timesI(F._odata[i]()()); //fixed
T._odata[i]()(1, 1) = timesMinusI(F._odata[i]()()); //fixed
T._odata[i]()(2, 2) = timesMinusI(F._odata[i]()()); //fixed
T._odata[i]()(3, 3) = timesI(F._odata[i]()()); //fixed
}
return T;
}
};
}
}
#endif // GRID_QCD_WILSON_CLOVER_FERMION_H