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Fixing the topological charge. Wilson Flow tested, ok

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This commit is contained in:
Guido Cossu
2017-05-26 12:45:59 +01:00
parent 75856f2945
commit f4e8bf2858
3 changed files with 44 additions and 11 deletions
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26
lib/qcd/utils/WilsonLoops.h
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@ -197,10 +197,13 @@ public:
std::vector<GaugeMat> U(Nd, grid);
for (int d = 0; d < Nd; d++) {
// this operation is taking too much time
U[d] = PeekIndex<LorentzIndex>(Umu, d);
}
staple = zero;
GaugeMat tmp(grid);
GaugeMat tmp1(grid);
GaugeMat tmp2(grid);
for (int nu = 0; nu < Nd; nu++) {
@ -214,22 +217,34 @@ public:
// |
// __|
//
tmp1 = Cshift(U[nu], mu, 1);
tmp2 = Cshift(U[mu], nu, 1);
staple += tmp1*adj(U[nu] * tmp2);
/*
staple += Gimpl::ShiftStaple(
Gimpl::CovShiftForward(
U[nu], nu,
Gimpl::CovShiftBackward(
U[mu], mu, Gimpl::CovShiftIdentityBackward(U[nu], nu))),
mu);
*/
// __
// |
// |__
//
//
tmp2 = adj(U[mu]*tmp1)*U[nu];
staple += Cshift(tmp2, nu, -1);
/*
staple += Gimpl::ShiftStaple(
Gimpl::CovShiftBackward(U[nu], nu,
Gimpl::CovShiftBackward(U[mu], mu, U[nu])), mu);
*/
}
}
}
@ -289,8 +304,7 @@ public:
//
staple = Gimpl::ShiftStaple(
Gimpl::CovShiftBackward(U[nu], nu,
Gimpl::CovShiftBackward(U[mu], mu, U[nu])),
mu);
Gimpl::CovShiftBackward(U[mu], mu, U[nu])), mu);
}
}
@ -307,10 +321,10 @@ public:
GaugeMat Vup(Umu._grid), Vdn(Umu._grid);
StapleUpper(Vup, Umu, mu, nu);
StapleLower(Vdn, Umu, mu, nu);
GaugeMat v = adj(Vup) - adj(Vdn);
GaugeMat v = Vup - Vdn;
GaugeMat u = PeekIndex<LorentzIndex>(Umu, mu); // some redundant copies
GaugeMat vu = v*u;
FS = 0.25*Ta(u*v + Cshift(vu, mu, +1));
FS = 0.25*Ta(u*v + Cshift(vu, mu, -1));
}
static Real TopologicalCharge(GaugeLorentz &U){