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HADRONS: 3pt contraction with gamma insertion between two propagators.
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@ -29,6 +29,7 @@ See the full license in the file "LICENSE" in the top level distribution directo
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#include <Grid/Hadrons/Modules/MAction/DWF.hpp>
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#include <Grid/Hadrons/Modules/MAction/Wilson.hpp>
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#include <Grid/Hadrons/Modules/MContraction/Baryon.hpp>
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#include <Grid/Hadrons/Modules/MContraction/Gamma3pt.hpp>
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#include <Grid/Hadrons/Modules/MContraction/Meson.hpp>
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#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
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#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonianEye.hpp>
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170
extras/Hadrons/Modules/MContraction/Gamma3pt.hpp
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extras/Hadrons/Modules/MContraction/Gamma3pt.hpp
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@ -0,0 +1,170 @@
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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/Gamma3pt.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_Gamma3pt_hpp_
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#define Hadrons_Gamma3pt_hpp_
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#include <Grid/Hadrons/Global.hpp>
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#include <Grid/Hadrons/Module.hpp>
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#include <Grid/Hadrons/ModuleFactory.hpp>
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BEGIN_HADRONS_NAMESPACE
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/*
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* 3pt contraction with gamma matrix insertion.
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*
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* Schematic:
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*
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* q2 q3
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* /----<------*------<----¬
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* / gamma \
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* / \
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* i * * f
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* \ /
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* \ /
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* \----------->----------/
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* q1
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*
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* trace(g5*q1*adj(q2)*g5*gamma*q3)
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*/
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/******************************************************************************
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* Gamma3pt *
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******************************************************************************/
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BEGIN_MODULE_NAMESPACE(MContraction)
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class Gamma3ptPar: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(Gamma3ptPar,
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std::string, q1,
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std::string, q2,
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std::string, q3,
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Gamma::Algebra, gamma,
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std::string, output);
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};
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template <typename FImpl1, typename FImpl2, typename FImpl3>
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class TGamma3pt: public Module<Gamma3ptPar>
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{
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TYPE_ALIASES(FImpl1, 1);
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TYPE_ALIASES(FImpl2, 2);
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TYPE_ALIASES(FImpl3, 3);
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class Result: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(Result,
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Gamma::Algebra, gamma,
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std::vector<Complex>, corr);
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};
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public:
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// constructor
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TGamma3pt(const std::string name);
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// destructor
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virtual ~TGamma3pt(void) = default;
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// dependency relation
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virtual std::vector<std::string> getInput(void);
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virtual std::vector<std::string> getOutput(void);
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// setup
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virtual void setup(void);
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// execution
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virtual void execute(void);
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};
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MODULE_REGISTER_NS(Gamma3pt, ARG(TGamma3pt<FIMPL, FIMPL, FIMPL>), MContraction);
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/******************************************************************************
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* TGamma3pt implementation *
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******************************************************************************/
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// constructor /////////////////////////////////////////////////////////////////
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template <typename FImpl1, typename FImpl2, typename FImpl3>
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TGamma3pt<FImpl1, FImpl2, FImpl3>::TGamma3pt(const std::string name)
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: Module<Gamma3ptPar>(name)
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{}
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// dependencies/products ///////////////////////////////////////////////////////
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template <typename FImpl1, typename FImpl2, typename FImpl3>
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std::vector<std::string> TGamma3pt<FImpl1, FImpl2, FImpl3>::getInput(void)
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{
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std::vector<std::string> in = {par().q1, par().q2, par().q3};
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return in;
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}
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template <typename FImpl1, typename FImpl2, typename FImpl3>
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std::vector<std::string> TGamma3pt<FImpl1, FImpl2, FImpl3>::getOutput(void)
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{
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std::vector<std::string> out = {getName()};
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return out;
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}
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// setup ///////////////////////////////////////////////////////////////////////
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template <typename FImpl1, typename FImpl2, typename FImpl3>
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void TGamma3pt<FImpl1, FImpl2, FImpl3>::setup(void)
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{
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}
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// execution ///////////////////////////////////////////////////////////////////
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template <typename FImpl1, typename FImpl2, typename FImpl3>
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void TGamma3pt<FImpl1, FImpl2, FImpl3>::execute(void)
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{
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LOG(Message) << "Computing 3pt contractions '" << getName() << "' using"
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<< " quarks '" << par().q1 << "', '" << par().q2 << "' and '"
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<< par().q3 << "', with " << par().gamma << " insertion."
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<< std::endl;
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CorrWriter writer(par().output);
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PropagatorField1 &q1 = *env().template getObject<PropagatorField1>(par().q1);
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PropagatorField2 &q2 = *env().template getObject<PropagatorField2>(par().q2);
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PropagatorField3 &q3 = *env().template getObject<PropagatorField3>(par().q3);
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LatticeComplex c(env().getGrid());
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Gamma g5(Gamma::Algebra::Gamma5);
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Gamma gamma(par().gamma);
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std::vector<TComplex> buf;
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Result result;
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c = trace(g5*q1*adj(q2)*(g5*gamma)*q3);
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sliceSum(c, buf, Tp);
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result.gamma = par().gamma;
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result.corr.resize(buf.size());
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for (unsigned int t = 0; t < buf.size(); ++t)
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{
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result.corr[t] = TensorRemove(buf[t]);
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}
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write(writer, "gamma3pt", result);
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}
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END_MODULE_NAMESPACE
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END_HADRONS_NAMESPACE
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#endif // Hadrons_Gamma3pt_hpp_
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@ -9,6 +9,7 @@ modules_hpp =\
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Modules/MAction/DWF.hpp \
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Modules/MAction/Wilson.hpp \
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Modules/MContraction/Baryon.hpp \
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Modules/MContraction/Gamma3pt.hpp \
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Modules/MContraction/Meson.hpp \
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Modules/MContraction/WeakHamiltonian.hpp \
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Modules/MContraction/WeakHamiltonianEye.hpp \
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