portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2025-11-04 05:54:32 +00:00
Code Releases Activity

More on smearing routines, writing APEsmear (dev)

Browse Source
This commit is contained in:
neo
2016-02-19 17:15:27 +09:00
parent 771235017d
commit c1b1b89d17
5 changed files with 294 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
lib/qcd/utils/WilsonLoops.h
View File

@@ -171,6 +171,89 @@ public:
}
}
//////////////////////////////////////////////////
// the sum over all staples on each site in direction mu,nu
//////////////////////////////////////////////////
static void Staple(GaugeMat &staple,const GaugeLorentz &Umu,int mu, in nu){
GridBase *grid = Umu._grid;
std::vector<GaugeMat> U(4,grid);
for(int d=0;d<Nd;d++){
U[d] = PeekIndex<LorentzIndex>(Umu,d);
}
staple = zero;
GaugeMat tmp(grid);
if(nu != mu) {
// mu
// ^
// |__> nu
// __
// |
// __|
//
staple+=Gimpl::ShiftStaple(
Gimpl::CovShiftForward (U[nu],nu,
Gimpl::CovShiftBackward(U[mu],mu,
Gimpl::CovShiftIdentityBackward(U[nu],nu))),mu);
// __
// |
// |__
//
//
staple+=Gimpl::ShiftStaple(
Gimpl::CovShiftBackward(U[nu],nu,
Gimpl::CovShiftBackward(U[mu],mu,U[nu])),mu);
}
}
//////////////////////////////////////////////////
// the sum over all staples on each site in direction mu,nu, upper part
//////////////////////////////////////////////////
static void StapleUpper(GaugeMat &staple,const GaugeLorentz &Umu,int mu, in nu){
GridBase *grid = Umu._grid;
std::vector<GaugeMat> U(4,grid);
for(int d=0;d<Nd;d++){
U[d] = PeekIndex<LorentzIndex>(Umu,d);
}
staple = zero;
GaugeMat tmp(grid);
if(nu != mu) {
// mu
// ^
// |__> nu
// __
// |
// __|
//
staple+=Gimpl::ShiftStaple(
Gimpl::CovShiftForward (U[nu],nu,
Gimpl::CovShiftBackward(U[mu],mu,
Gimpl::CovShiftIdentityBackward(U[nu],nu))),mu);
}
}
//////////////////////////////////////////////////////
// Similar to above for rectangle is required
//////////////////////////////////////////////////////