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Implement IR improvement, with coefficients set in input file.

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This commit is contained in:
James Harrison
2018-02-02 11:56:51 +00:00
parent 5f85473d6b
commit f37ed4958b
4 changed files with 11 additions and 28 deletions
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32
lib/qcd/action/gauge/Photon.h
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@ -60,7 +60,7 @@ namespace QCD{
GRID_SERIALIZABLE_ENUM(Gauge, undef, feynman, 1, coulomb, 2, landau, 3);
GRID_SERIALIZABLE_ENUM(ZmScheme, undef, qedL, 1, qedTL, 2);
public:
Photon(Gauge gauge, ZmScheme zmScheme, Integer improvement);
Photon(Gauge gauge, ZmScheme zmScheme, std::vector<Real> improvements);
virtual ~Photon(void) = default;
void FreePropagator(const GaugeField &in, GaugeField &out);
void MomentumSpacePropagator(const GaugeField &in, GaugeField &out);
@ -75,14 +75,14 @@ namespace QCD{
private:
Gauge gauge_;
ZmScheme zmScheme_;
Integer improvement_;
std::vector<Real> improvement_;
};
typedef Photon<QedGimplR> PhotonR;
template<class Gimpl>
Photon<Gimpl>::Photon(Gauge gauge, ZmScheme zmScheme, Integer improvement)
: gauge_(gauge), zmScheme_(zmScheme), improvement_(improvement)
Photon<Gimpl>::Photon(Gauge gauge, ZmScheme zmScheme, std::vector<Real> improvements)
: gauge_(gauge), zmScheme_(zmScheme), improvement_(improvements)
{}
template<class Gimpl>
@ -157,29 +157,11 @@ namespace QCD{
out = where(spNrm == Integer(0), 0.*out, out);
// IR improvement
switch (improvement_)
for(int i = 0; i < improvement_.size(); i++)
{
case 0:
break;
case 1:
{
Real f1 = sqrt(2.48560548);
out = where(spNrm == Integer(1), f1*out, out);
break;
}
case 2:
{
Real f1 = sqrt(4.93053406);
Real f2 = sqrt(-1.44492857);
out = where(spNrm == Integer(1), f1*out, out);
out = where(spNrm == Integer(2), f2*out, out);
break;
}
default:
break;
Real f = sqrt(improvement_[i]+1);
out = where(spNrm == Integer(i+1), f*out, out);
}
break;
}
default:
break;