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Auxiliary fields

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This commit is contained in:
Guido Cossu
2017-02-27 13:16:38 +00:00
parent 7270c6a150
commit 596dcd85b2
7 changed files with 146 additions and 20 deletions
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27
lib/qcd/utils/CovariantLaplacian.h
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@ -144,6 +144,25 @@ class LaplacianAdjointField: public Metric<typename Impl::Field> {
}
}
// separating this temporarily
void MDeriv(const GaugeField& left, const GaugeField& right,
GaugeField& der) {
// in is anti-hermitian
RealD factor = -kappa / (double(4 * Nd));
for (int mu = 0; mu < Nd; mu++) {
GaugeLinkField der_mu(der._grid);
der_mu = zero;
for (int nu = 0; nu < Nd; nu++) {
GaugeLinkField left_nu = PeekIndex<LorentzIndex>(left, nu);
GaugeLinkField right_nu = PeekIndex<LorentzIndex>(right, nu);
der_mu += U[mu] * Cshift(left_nu, mu, 1) * adj(U[mu]) * right_nu;
der_mu += U[mu] * Cshift(right_nu, mu, 1) * adj(U[mu]) * left_nu;
}
PokeIndex<LorentzIndex>(der, -factor * der_mu, mu);
}
}
void Minv(const GaugeField& in, GaugeField& inverted){
HermitianLinearOperator<LaplacianAdjointField<Impl>,GaugeField> HermOp(*this);
Solver(HermOp, in, inverted);
@ -157,6 +176,14 @@ class LaplacianAdjointField: public Metric<typename Impl::Field> {
P = Gp;
}
void MInvSquareRoot(GaugeField& P){
GaugeField Gp(P._grid);
HermitianLinearOperator<LaplacianAdjointField<Impl>,GaugeField> HermOp(*this);
ConjugateGradientMultiShift<GaugeField> msCG(param.MaxIter,PowerInvHalf);
msCG(HermOp,P,Gp);
P = Gp;
}
private: