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paboyle
9e6a4a4737
WIlson flow to include options for DBW2, Iwasaki, Symanzik. View logging for data assurance
164 lines
6.4 KiB
C++
164 lines
6.4 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/fermion/PartialFractionFermion5D.h
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Copyright (C) 2015
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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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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_PARTIAL_FRACTION_H
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#define GRID_QCD_PARTIAL_FRACTION_H
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#include <Grid/qcd/action/fermion/WilsonFermion5D.h>
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NAMESPACE_BEGIN(Grid);
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template<class Impl>
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class PartialFractionFermion5D : public WilsonFermion5D<Impl>
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{
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public:
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INHERIT_IMPL_TYPES(Impl);
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const int part_frac_chroma_convention=0;
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void Meooe_internal(const FermionField &in, FermionField &out,int dag);
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void Mooee_internal(const FermionField &in, FermionField &out,int dag);
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void MooeeInv_internal(const FermionField &in, FermionField &out,int dag);
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void M_internal(const FermionField &in, FermionField &out,int dag);
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// override multiply
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virtual void M (const FermionField &in, FermionField &out);
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virtual void Mdag (const FermionField &in, FermionField &out);
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// half checkerboard operaions
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virtual void Meooe (const FermionField &in, FermionField &out);
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virtual void MeooeDag (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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// force terms; five routines; default to Dhop on diagonal
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virtual void MDeriv (GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
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virtual void MoeDeriv(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
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virtual void MeoDeriv(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
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virtual void Instantiatable(void) =0; // ensure no make-eee
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// Efficient support for multigrid coarsening
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virtual void Mdir (const FermionField &in, FermionField &out,int dir,int disp);
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virtual void MdirAll(const FermionField &in, std::vector<FermionField> &out);
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///////////////////////////////////////////////////////////////
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// Physical surface field utilities
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///////////////////////////////////////////////////////////////
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virtual void ExportPhysicalFermionSolution(const FermionField &solution5d,FermionField &exported4d);
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virtual void ImportPhysicalFermionSource (const FermionField &input4d,FermionField &imported5d);
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// Constructors
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PartialFractionFermion5D(GaugeField &_Umu,
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GridCartesian &FiveDimGrid,
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GridRedBlackCartesian &FiveDimRedBlackGrid,
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GridCartesian &FourDimGrid,
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GridRedBlackCartesian &FourDimRedBlackGrid,
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RealD _mass,RealD M5,const ImplParams &p= ImplParams());
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PartialFractionFermion5D(GaugeField &_Umu,
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GridCartesian &FiveDimGrid,
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GridRedBlackCartesian &FiveDimRedBlackGrid,
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GridCartesian &FourDimGrid,
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GridRedBlackCartesian &FourDimRedBlackGrid,
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RealD _mass,RealD M5,std::vector<RealD> &_qmu,const ImplParams &p= ImplParams());
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void FreePropagator(const FermionField &in,FermionField &out,RealD mass,std::vector<Complex> boundary, std::vector<double> twist)
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{
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std::cout << "Free Propagator for PartialFraction"<<std::endl;
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FermionField in_k(in.Grid());
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FermionField prop_k(in.Grid());
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FFT theFFT((GridCartesian *) in.Grid());
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//phase for boundary condition
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ComplexField coor(in.Grid());
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ComplexField ph(in.Grid()); ph = Zero();
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FermionField in_buf(in.Grid()); in_buf = Zero();
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typedef typename Simd::scalar_type Scalar;
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Scalar ci(0.0,1.0);
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GRID_ASSERT(twist.size() == Nd);//check that twist is Nd
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GRID_ASSERT(boundary.size() == Nd);//check that boundary conditions is Nd
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int shift = 0;
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for(unsigned int nu = 0; nu < Nd; nu++)
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{
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// Shift coordinate lattice index by 1 to account for 5th dimension.
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LatticeCoordinate(coor, nu + shift);
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double boundary_phase = ::acos(real(boundary[nu]));
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ph = ph + boundary_phase*coor*((1./(in.Grid()->_fdimensions[nu+shift])));
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//momenta for propagator shifted by twist+boundary
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twist[nu] = twist[nu] + boundary_phase/((2.0*M_PI));
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}
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in_buf = exp(ci*ph*(-1.0))*in;
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theFFT.FFT_all_dim(in_k,in,FFT::forward);
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if ( this->qmu.size() ){
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this->MomentumSpacePropagatorHwQ(prop_k,in_k,mass,twist,this->qmu);
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} else {
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this->MomentumSpacePropagatorHw(prop_k,in_k,mass,twist);
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}
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theFFT.FFT_all_dim(out,prop_k,FFT::backward);
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//phase for boundary condition
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out = out * exp(ci*ph);
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};
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virtual void FreePropagator(const FermionField &in,FermionField &out,RealD mass) {
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std::vector<double> twist(Nd,0.0); //default: periodic boundarys in all directions
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std::vector<Complex> boundary;
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for(int i=0;i<Nd;i++) boundary.push_back(1);//default: periodic boundary conditions
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FreePropagator(in,out,mass,boundary,twist);
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};
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void set_qmu(std::vector<RealD> _qmu) { qmu=_qmu; GRID_ASSERT(qmu.size()==Nd);};
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void addQmu(const FermionField &in, FermionField &out, int dag);
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protected:
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virtual void SetCoefficientsTanh(Approx::zolotarev_data *zdata,RealD scale);
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virtual void SetCoefficientsZolotarev(RealD zolo_hi,Approx::zolotarev_data *zdata);
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std::vector<RealD> qmu;
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// Part frac
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RealD mass;
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RealD dw_diag;
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RealD R;
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RealD amax;
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RealD scale;
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std::vector<double> p;
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std::vector<double> q;
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};
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NAMESPACE_END(Grid);
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#endif
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