mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 15:55:37 +00:00
0bc004de7c
Tanh/Zolo * (Cayley/PartFrac/ContFrac) * (Mobius/Shamir/Wilson) Approx Representation Kernel. All are done with space-time taking part in checkerboarding, Ls uncheckerboarded Have only so far tested the Domain Wall limit of mobius, and at that only checked that it i) Inverts ii) 5dim DW == Ls copies of 4dim D2 iii) MeeInv Mee == 1 iv) Meo+Mee+Moe+Moo == M unprec. v) MpcDagMpc is hermitan vi) Mdag is the adjoint of M between stochastic vectors. That said, the RB schur solve, RB MpcDagMpc solve, Unprec solve all converge and the true residual becomes small; so pretty good tests.
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
#ifndef GRID_QCD_CONTINUED_FRACTION_H
|
|
#define GRID_QCD_CONTINUED_FRACTION_H
|
|
|
|
namespace Grid {
|
|
|
|
namespace QCD {
|
|
|
|
class ContinuedFractionFermion5D : public WilsonFermion5D
|
|
{
|
|
public:
|
|
|
|
// override multiply
|
|
virtual RealD M (const LatticeFermion &in, LatticeFermion &out);
|
|
virtual RealD Mdag (const LatticeFermion &in, LatticeFermion &out);
|
|
|
|
// half checkerboard operaions
|
|
virtual void Meooe (const LatticeFermion &in, LatticeFermion &out);
|
|
virtual void MeooeDag (const LatticeFermion &in, LatticeFermion &out);
|
|
virtual void Mooee (const LatticeFermion &in, LatticeFermion &out);
|
|
virtual void MooeeDag (const LatticeFermion &in, LatticeFermion &out);
|
|
virtual void MooeeInv (const LatticeFermion &in, LatticeFermion &out);
|
|
virtual void MooeeInvDag (const LatticeFermion &in, LatticeFermion &out);
|
|
|
|
private:
|
|
|
|
Approx::zolotarev_data *zdata;
|
|
|
|
// Cont frac
|
|
RealD mass;
|
|
RealD R;
|
|
RealD scale;
|
|
std::vector<double> Beta;
|
|
std::vector<double> cc;;
|
|
std::vector<double> cc_d;;
|
|
std::vector<double> sqrt_cc;
|
|
std::vector<double> See;
|
|
std::vector<double> Aee;
|
|
|
|
// Constructors
|
|
ContinuedFractionFermion5D(LatticeGaugeField &_Umu,
|
|
GridCartesian &FiveDimGrid,
|
|
GridRedBlackCartesian &FiveDimRedBlackGrid,
|
|
GridCartesian &FourDimGrid,
|
|
GridRedBlackCartesian &FourDimRedBlackGrid,
|
|
RealD _mass,RealD M5);
|
|
|
|
};
|
|
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|