2017-03-30 10:37:17 +01:00
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/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp
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Copyright (C) 2017
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Author: Andrew Lawson <andrew.lawson1991@gmail.com>
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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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#ifndef Hadrons_WeakNeutral4ptDisc_hpp_
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#define Hadrons_WeakNeutral4ptDisc_hpp_
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#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
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BEGIN_HADRONS_NAMESPACE
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/******************************************************************************
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* WeakNeutral4ptDisc *
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******************************************************************************/
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BEGIN_MODULE_NAMESPACE(MContraction)
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enum
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{
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neut_disc_1_diag = 0,
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neut_disc_2_diag = 1,
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n_neut_disc_diag = 2
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};
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// Neutral 4pt disconnected subdiagram contractions.
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#define MAKE_DISC_MESON(Q_1, Q_2, gamma) (Q_1*adj(Q_2)*g5*gamma)
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#define MAKE_DISC_LOOP(Q_LOOP, gamma) (Q_LOOP*gamma)
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#define MAKE_DISC_CURR(Q_c, gamma) (trace(Q_c*gamma))
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2017-03-30 18:02:14 +01:00
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MAKE_WEAK_MODULE(WeakNeutral4ptDisc)
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2017-03-30 10:37:17 +01:00
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END_MODULE_NAMESPACE
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END_HADRONS_NAMESPACE
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#endif // Hadrons_WeakNeutral4ptDisc_hpp_
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