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Grid/lib/qcd/action/fermion/OverlapWilsonContfracTanhFermion.h

40 lines
1.0 KiB
C++

#ifndef OVERLAP_WILSON_CONTFRAC_TANH_FERMION_H
#define OVERLAP_WILSON_CONTFRAC_TANH_FERMION_H
#include <Grid.h>
namespace Grid {
namespace QCD {
class OverlapWilsonContFracTanhFermion : public ContinuedFractionFermion5D
{
public:
virtual void Instantiatable(void){};
// Constructors
OverlapWilsonContFracTanhFermion(LatticeGaugeField &_Umu,
GridCartesian &FiveDimGrid,
GridRedBlackCartesian &FiveDimRedBlackGrid,
GridCartesian &FourDimGrid,
GridRedBlackCartesian &FourDimRedBlackGrid,
RealD _mass,RealD _M5,
RealD scale) :
// b+c=scale, b-c = 0 <=> b =c = scale/2
ContinuedFractionFermion5D(_Umu,
FiveDimGrid,
FiveDimRedBlackGrid,
FourDimGrid,
FourDimRedBlackGrid,_mass,_M5)
{
assert((Ls&0x1)==1); // Odd Ls required
int nrational=Ls-1;// Even rational order
zdata = Approx::grid_higham(1.0,nrational);// eps is ignored for higham
SetCoefficientsTanh(zdata,scale);
}
};
}
}
#endif