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Christoph needs SchurDiagTwoKappa which is mobius specific.

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paboyle 2017-04-07 11:07:40 +09:00
parent 5592f7b8c1
commit 86aaa35294
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lib/qcd/action/fermion/Fermion.h
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@ -58,6 +58,7 @@ Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
#include <Grid/qcd/action/fermion/DomainWallFermion.h>
#include <Grid/qcd/action/fermion/MobiusFermion.h>
#include <Grid/qcd/action/fermion/ZMobiusFermion.h>
#include <Grid/qcd/action/fermion/SchurDiagTwoKappa.h>
#include <Grid/qcd/action/fermion/ScaledShamirFermion.h>
#include <Grid/qcd/action/fermion/MobiusZolotarevFermion.h>
#include <Grid/qcd/action/fermion/ShamirZolotarevFermion.h>

102
lib/qcd/action/fermion/SchurDiagTwoKappa.h Normal file
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@ -0,0 +1,102 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: SchurDiagTwoKappa.h
Copyright (C) 2017
Author: Christoph Lehner
Author: Peter Boyle <paboyle@ph.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 _SCHUR_DIAG_TWO_KAPPA_H
#define _SCHUR_DIAG_TWO_KAPPA_H
namespace Grid {
// This is specific to (Z)mobius fermions
template<class Matrix, class Field>
class KappaSimilarityTransform {
public:
INHERIT_IMPL_TYPES(Matrix);
std::vector<Coeff_t> kappa, kappaDag, kappaInv, kappaInvDag;
KappaSimilarityTransform (Matrix &zmob) {
for (int i=0;i<(int)zmob.bs.size();i++) {
Coeff_t k = 1.0 / ( 2.0 * (zmob.bs[i] *(4 - zmob.M5) + 1.0) );
kappa.push_back( k );
kappaDag.push_back( conj(k) );
kappaInv.push_back( 1.0 / k );
kappaInvDag.push_back( 1.0 / conj(k) );
}
}
template<typename vobj>
void sscale(const Lattice<vobj>& in, Lattice<vobj>& out, Coeff_t* s) {
GridBase *grid=out._grid;
out.checkerboard = in.checkerboard;
assert(grid->_simd_layout[0] == 1); // should be fine for ZMobius for now
int Ls = grid->_rdimensions[0];
parallel_for(int ss=0;ss<grid->oSites();ss++){
vobj tmp = s[ss % Ls]*in._odata[ss];
vstream(out._odata[ss],tmp);
}
}
RealD sscale_norm(const Field& in, Field& out, Coeff_t* s) {
sscale(in,out,s);
return norm2(out);
}
virtual RealD M (const Field& in, Field& out) { return sscale_norm(in,out,&kappa[0]); }
virtual RealD MDag (const Field& in, Field& out) { return sscale_norm(in,out,&kappaDag[0]);}
virtual RealD MInv (const Field& in, Field& out) { return sscale_norm(in,out,&kappaInv[0]);}
virtual RealD MInvDag (const Field& in, Field& out) { return sscale_norm(in,out,&kappaInvDag[0]);}
};
template<class Matrix,class Field>
class SchurDiagTwoKappaOperator : public SchurOperatorBase<Field> {
public:
KappaSimilarityTransform<Matrix, Field> _S;
SchurDiagTwoOperator<Matrix, Field> _Mat;
SchurDiagTwoKappaOperator (Matrix &Mat): _S(Mat), _Mat(Mat) {};
virtual RealD Mpc (const Field &in, Field &out) {
Field tmp(in._grid);
_S.MInv(in,out);
_Mat.Mpc(out,tmp);
return _S.M(tmp,out);
}
virtual RealD MpcDag (const Field &in, Field &out){
Field tmp(in._grid);
_S.MDag(in,out);
_Mat.MpcDag(out,tmp);
return _S.MInvDag(tmp,out);
}
};
}
#endif