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added polyakov loop observable to the hmc

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pretidav
2017-11-02 21:58:16 +01:00
parent 8e057721a9
commit 7b42ac9982
5 changed files with 109 additions and 0 deletions
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23
lib/qcd/utils/WilsonLoops.h
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@@ -123,6 +123,29 @@ public:
return sumplaq / vol / faces / Nc; // Nd , Nc dependent... FIXME
}
//////////////////////////////////////////////////
// average over all x,y,z the temporal loop
//////////////////////////////////////////////////
static ComplexD avgPolyakovLoop(const GaugeField &Umu) { //assume Nd=4
GaugeMat Ut(Umu._grid), P(Umu._grid);
ComplexD out;
int T = Umu._grid->GlobalDimensions()[3];
int X = Umu._grid->GlobalDimensions()[0];
int Y = Umu._grid->GlobalDimensions()[1];
int Z = Umu._grid->GlobalDimensions()[2];
std::cout << X << Y << Z << T << std::endl;
Ut = peekLorentz(Umu,3); //Select temporal direction
P = Ut;
for (int t=1;t<T;t++){
P = Gimpl::CovShiftForward(Ut,3,P);
}
RealD norm = 1.0/(Nc*X*Y*Z*T);
out = sum(trace(P))*norm;
return out;
}
//////////////////////////////////////////////////
// average over traced single links
//////////////////////////////////////////////////