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dt^2 term comments

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This commit is contained in:
Peter Boyle 2019-02-24 15:23:20 +00:00
parent ded2d5c3ab
commit 6160795a43
1 changed files with 7 additions and 0 deletions
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7
tests/forces/Test_wilson_force.cc
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@ -173,6 +173,13 @@ int main (int argc, char ** argv)
// Update PF action density
dS = dS+trace(mommu*forcemu)*dt;
// Smom = - P^2 ;
// dSmom = trace ( (mom+f/2dt)(mom+f/2dt) ) - trace mom*mom
// = trace(mom*f) dt + 0.25*dt*dt * trace(f*f).
//
// can we improve on this in HMC???
//
//
dSmom = dSmom - trace(mommu*forcemu) * dt;
dSmom2 = dSmom2 - trace(forcemu*forcemu) *(0.25* dt*dt);