mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-16 02:35:36 +00:00
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./lib/qcd/action/fermion/MobiusFermion.h
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
|
|
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 GRID_QCD_MOBIUS_FERMION_H
|
|
#define GRID_QCD_MOBIUS_FERMION_H
|
|
|
|
#include <Grid/qcd/action/fermion/FermionCore.h>
|
|
|
|
namespace Grid {
|
|
|
|
namespace QCD {
|
|
|
|
template<class Impl>
|
|
class MobiusFermion : public CayleyFermion5D<Impl>
|
|
{
|
|
public:
|
|
INHERIT_IMPL_TYPES(Impl);
|
|
public:
|
|
|
|
virtual void Instantiatable(void) {};
|
|
// Constructors
|
|
MobiusFermion(GaugeField &_Umu,
|
|
GridCartesian &FiveDimGrid,
|
|
GridRedBlackCartesian &FiveDimRedBlackGrid,
|
|
GridCartesian &FourDimGrid,
|
|
GridRedBlackCartesian &FourDimRedBlackGrid,
|
|
RealD _mass,RealD _M5,
|
|
RealD b, RealD c,const ImplParams &p= ImplParams()) :
|
|
|
|
CayleyFermion5D<Impl>(_Umu,
|
|
FiveDimGrid,
|
|
FiveDimRedBlackGrid,
|
|
FourDimGrid,
|
|
FourDimRedBlackGrid,_mass,_M5,p)
|
|
|
|
{
|
|
RealD eps = 1.0;
|
|
|
|
std::cout<<GridLogMessage << "MobiusFermion (b="<<b<<",c="<<c<<") with Ls= "<<this->Ls<<" Tanh approx"<<std::endl;
|
|
Approx::zolotarev_data *zdata = Approx::higham(eps,this->Ls);// eps is ignored for higham
|
|
assert(zdata->n==this->Ls);
|
|
|
|
// Call base setter
|
|
this->SetCoefficientsTanh(zdata,b,c);
|
|
|
|
Approx::zolotarev_free(zdata);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|