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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/spin/Dirac.cc
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Copyright (C) 2015
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid.h>
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namespace Grid {
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namespace QCD {
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Gamma::GammaMatrix Gamma::GammaMatrices [] = {
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Gamma::Identity,
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Gamma::GammaX,
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Gamma::GammaY,
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Gamma::GammaZ,
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Gamma::GammaT,
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Gamma::Gamma5,
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Gamma::MinusIdentity,
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Gamma::MinusGammaX,
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Gamma::MinusGammaY,
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Gamma::MinusGammaZ,
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Gamma::MinusGammaT,
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Gamma::MinusGamma5
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};
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const char *Gamma::GammaMatrixNames[] = {
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"Identity ",
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"GammaX ",
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"GammaY ",
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"GammaZ ",
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"GammaT ",
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"Gamma5 ",
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"-Identity",
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"-GammaX ",
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"-GammaY ",
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"-GammaZ ",
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"-GammaT ",
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"-Gamma5 ",
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" "
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};
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SpinMatrix makeGammaProd(const unsigned int i)
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{
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SpinMatrix g;
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g = 1.;
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if (i & 0x1)
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{
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g = g*Gamma(Gamma::GammaMatrix::GammaX);
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}
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if (i & 0x2)
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{
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g = g*Gamma(Gamma::GammaMatrix::GammaY);
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}
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if (i & 0x4)
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{
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g = g*Gamma(Gamma::GammaMatrix::GammaZ);
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}
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if (i & 0x8)
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{
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g = g*Gamma(Gamma::GammaMatrix::GammaT);
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}
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return g;
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}
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// void sprojMul( vHalfSpinColourVector &out,vColourMatrix &u, vSpinColourVector &in){
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// vHalfSpinColourVector hspin;
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// spProjXp(hspin,in);
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// mult(&out,&u,&hspin);
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// }
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}
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}
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