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185 lines
6.7 KiB
C++
185 lines
6.7 KiB
C++
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/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/fermion/MobiusEOFAFermiondense.cc
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Copyright (C) 2017
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Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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Author: David Murphy <dmurphy@phys.columbia.edu>
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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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#include <Grid/Grid_Eigen_Dense.h>
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#include <Grid/qcd/action/fermion/FermionCore.h>
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#include <Grid/qcd/action/fermion/MobiusEOFAFermion.h>
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namespace Grid {
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namespace QCD {
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/*
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* Dense matrix versions of routines
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*/
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template<class Impl>
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void MobiusEOFAFermion<Impl>::MooeeInv(const FermionField& psi, FermionField& chi)
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{
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this->MooeeInternal(psi, chi, DaggerNo, InverseYes);
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}
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template<class Impl>
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void MobiusEOFAFermion<Impl>::MooeeInv_shift(const FermionField& psi, FermionField& chi)
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{
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this->MooeeInternal(psi, chi, DaggerNo, InverseYes);
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}
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template<class Impl>
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void MobiusEOFAFermion<Impl>::MooeeInvDag(const FermionField& psi, FermionField& chi)
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{
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this->MooeeInternal(psi, chi, DaggerYes, InverseYes);
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}
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template<class Impl>
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void MobiusEOFAFermion<Impl>::MooeeInvDag_shift(const FermionField& psi, FermionField& chi)
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{
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this->MooeeInternal(psi, chi, DaggerYes, InverseYes);
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}
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template<class Impl>
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void MobiusEOFAFermion<Impl>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv)
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{
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int Ls = this->Ls;
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int LLs = psi._grid->_rdimensions[0];
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int vol = psi._grid->oSites()/LLs;
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int pm = this->pm;
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RealD shift = this->shift;
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RealD alpha = this->alpha;
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RealD k = this->k;
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RealD mq1 = this->mq1;
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chi.checkerboard = psi.checkerboard;
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assert(Ls==LLs);
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Eigen::MatrixXd Pplus = Eigen::MatrixXd::Zero(Ls,Ls);
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Eigen::MatrixXd Pminus = Eigen::MatrixXd::Zero(Ls,Ls);
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for(int s=0;s<Ls;s++){
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Pplus(s,s) = this->bee[s];
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Pminus(s,s) = this->bee[s];
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}
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for(int s=0; s<Ls-1; s++){
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Pminus(s,s+1) = -this->cee[s];
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}
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for(int s=0; s<Ls-1; s++){
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Pplus(s+1,s) = -this->cee[s+1];
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}
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Pplus (0,Ls-1) = mq1*this->cee[0];
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Pminus(Ls-1,0) = mq1*this->cee[Ls-1];
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if(shift != 0.0){
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Coeff_t N = 2.0 * ( std::pow(alpha+1.0,Ls) + mq1*std::pow(alpha-1.0,Ls) );
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for(int s=0; s<Ls; ++s){
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if(pm == 1){ Pplus(s,Ls-1) += shift * k * N * std::pow(-1.0,s) * std::pow(alpha-1.0,s) / std::pow(alpha+1.0,Ls+s+1); }
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else{ Pminus(Ls-1-s,Ls-1) -= shift * k * N * std::pow(-1.0,s) * std::pow(alpha-1.0,s) / std::pow(alpha+1.0,Ls+s+1); }
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}
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}
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Eigen::MatrixXd PplusMat ;
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Eigen::MatrixXd PminusMat;
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if(inv){
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PplusMat = Pplus.inverse();
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PminusMat = Pminus.inverse();
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} else {
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PplusMat = Pplus;
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PminusMat = Pminus;
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}
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if(dag){
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PplusMat.adjointInPlace();
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PminusMat.adjointInPlace();
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}
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// For the non-vectorised s-direction this is simple
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for(auto site=0; site<vol; site++){
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SiteSpinor SiteChi;
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SiteHalfSpinor SitePplus;
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SiteHalfSpinor SitePminus;
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for(int s1=0; s1<Ls; s1++){
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SiteChi = zero;
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for(int s2=0; s2<Ls; s2++){
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int lex2 = s2 + Ls*site;
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if(PplusMat(s1,s2) != 0.0){
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spProj5p(SitePplus,psi[lex2]);
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accumRecon5p(SiteChi, PplusMat(s1,s2)*SitePplus);
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}
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if(PminusMat(s1,s2) != 0.0){
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spProj5m(SitePminus, psi[lex2]);
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accumRecon5m(SiteChi, PminusMat(s1,s2)*SitePminus);
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}
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}
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chi[s1+Ls*site] = SiteChi*0.5;
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}
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}
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}
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#ifdef MOBIUS_EOFA_DPERP_DENSE
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INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplF);
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INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplD);
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INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplF);
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INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplD);
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INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplF);
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INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplD);
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template void MobiusEOFAFermion<GparityWilsonImplF>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<GparityWilsonImplD>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<WilsonImplF>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<WilsonImplD>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<ZWilsonImplF>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<ZWilsonImplD>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplFH);
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INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplDF);
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INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplFH);
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INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplDF);
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INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplFH);
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INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplDF);
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template void MobiusEOFAFermion<GparityWilsonImplFH>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<GparityWilsonImplDF>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<WilsonImplFH>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<WilsonImplDF>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<ZWilsonImplFH>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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template void MobiusEOFAFermion<ZWilsonImplDF>::MooeeInternal(const FermionField& psi, FermionField& chi, int dag, int inv);
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#endif
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}}
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