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projection on Sp2n algebra, to be used instead of Ta

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This commit is contained in:
Alessandro Lupo
2023-03-15 15:55:12 +00:00
parent fd057c838f
commit ba7f9d7b70
4 changed files with 214 additions and 58 deletions
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29
Grid/qcd/utils/Sp2n.impl
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@ -414,13 +414,6 @@ static void OmegaInvariance(ColourMatrix &in) {
Omega = Zero();
const int nsp=ncolour/2;
std::cout << GridLogMessage << "I am a ColourMatrix" << std::endl;
// for (int i = 0; i < ncolour; i++) wrong?!
//{
// Omega()()(i, 2*ncolour-1-i) = 1.;
// Omega()()(2*ncolour-1-i, i) = -1;
// }
for (int i = 0; i < nsp; i++) {
Omega()()(i, nsp + i) = 1.;
Omega()()(nsp + i, i) = -1;
@ -454,8 +447,6 @@ static void OmegaInvariance(GaugeField &in) {
Omega = Zero();
identity = 1.;
std::cout << GridLogMessage << "I am a GaugeField " << std::endl;
U = PeekIndex<LorentzIndex>(in, 1);
OmegaInvariance(U);
@ -473,8 +464,6 @@ static void OmegaInvariance(LatticeColourMatrixD &in) {
Omega = Zero();
identity = 1.;
std::cout << GridLogMessage << "I am a LatticeColourMatrix " << std::endl;
for (int i = 0; i < nsp; i++) {
Omega()()(i, nsp + i) = 1.;
Omega()()(nsp + i, i) = -1;
@ -496,3 +485,21 @@ static void OmegaInvariance(LatticeColourMatrixD &in) {
}
}
template <ONLY_IF_Sp>
static void Omega(LatticeColourMatrixD &in) {
const int nsp=ncolour/2;
LatticeColourMatrixD OmegaLatt(in.Grid());
LatticeColourMatrixD identity(in.Grid());
ColourMatrix Omega;
OmegaLatt = Zero();
Omega = Zero();
identity = 1.;
for (int i = 0; i < nsp; i++) {
Omega()()(i, nsp + i) = 1.;
Omega()()(nsp + i, i) = -1;
}
OmegaLatt = OmegaLatt + (identity * Omega);
in = OmegaLatt;
}