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113 lines
4.7 KiB
C++
113 lines
4.7 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/fermion/WilsonCloverFermion.h
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Copyright (C) 2017
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Author: paboyle <paboyle@ph.ed.ac.uk>
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Author: Guido Cossu <guido.cossu@ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef GRID_QCD_WILSON_CLOVER_FERMION_H
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#define GRID_QCD_WILSON_CLOVER_FERMION_H
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#include <Grid/Grid.h>
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namespace Grid
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{
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namespace QCD
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{
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template <class Impl>
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class WilsonCloverFermion : public WilsonFermion<Impl>
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{
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public:
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// Types definitions
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INHERIT_IMPL_TYPES(Impl);
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template <typename vtype> using iImplClover = iScalar<iMatrix<iMatrix<vtype, Impl::Dimension>, Ns> >;
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typedef iImplClover<Simd> SiteCloverType;
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typedef Lattice<SiteCloverType> CloverFieldType;
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public:
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typedef WilsonFermion<Impl> WilsonBase;
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virtual void Instantiatable(void){};
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// Constructors
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WilsonCloverFermion(GaugeField &_Umu, GridCartesian &Fgrid,
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GridRedBlackCartesian &Hgrid,
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RealD _mass,
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RealD _csw,
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const ImplParams &p = ImplParams()) : WilsonFermion<Impl>(_Umu,
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Fgrid,
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Hgrid,
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_mass, p),
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CloverTerm(&Fgrid),
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CloverTermInv(&Fgrid),
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CloverTermEven(&Hgrid),
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CloverTermOdd(&Hgrid),
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CloverTermInvEven(&Hgrid),
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CloverTermInvOdd(&Hgrid)
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{
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csw = _csw;
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assert(Nd == 4); // require 4 dimensions
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}
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virtual RealD M(const FermionField &in, FermionField &out);
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virtual RealD Mdag(const FermionField &in, FermionField &out);
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virtual void Mooee(const FermionField &in, FermionField &out);
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virtual void MooeeDag(const FermionField &in, FermionField &out);
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virtual void MooeeInv(const FermionField &in, FermionField &out);
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virtual void MooeeInvDag(const FermionField &in, FermionField &out);
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virtual void MooeeInternal(const FermionField &in, FermionField &out, int dag, int inv);
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virtual void MDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag);
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virtual void MooDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag);
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virtual void MeeDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag);
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void ImportGauge(const GaugeField &_Umu);
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private:
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// here fixing the 4 dimensions, make it more general?
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RealD csw; // Clover coefficient
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CloverFieldType CloverTerm, CloverTermInv; // Clover term
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CloverFieldType CloverTermEven, CloverTermOdd;
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CloverFieldType CloverTermInvEven, CloverTermInvOdd; // Clover term
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// eventually these two can be compressed into 6x6 blocks instead of the 12x12
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// using the DeGrand-Rossi basis for the gamma matrices
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CloverFieldType fillClover(const GaugeLinkField& F){
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CloverFieldType T(F._grid);
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PARALLEL_FOR_LOOP
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for (int i = 0; i < CloverTerm._grid->oSites(); i++){
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for (int s1 = 0; s1 < Nc; s1++)
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for (int s2 = 0; s2 < Nc; s2++)
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T._odata[i]()(s1,s2) = F._odata[i]()();
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}
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return T;
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}
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};
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}
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}
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#endif // GRID_QCD_WILSON_CLOVER_FERMION_H
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