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Hadrons: moving Hadrons to root directory, build system improvements
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Hadrons/Modules/MScalarSUN/EMT.hpp
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Hadrons/Modules/MScalarSUN/EMT.hpp
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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/MScalarSUN/EMT.hpp
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Copyright (C) 2015-2018
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Author: Antonin Portelli <antonin.portelli@me.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_MScalarSUN_EMT_hpp_
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#define Hadrons_MScalarSUN_EMT_hpp_
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#include <Hadrons/Global.hpp>
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#include <Hadrons/Module.hpp>
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#include <Hadrons/ModuleFactory.hpp>
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#include <Hadrons/Modules/MScalarSUN/Utils.hpp>
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BEGIN_HADRONS_NAMESPACE
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/******************************************************************************
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* Energy-momentum tensor *
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******************************************************************************/
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BEGIN_MODULE_NAMESPACE(MScalarSUN)
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class EMTPar: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(EMTPar,
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std::string, kinetic,
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std::string, phiPow,
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std::string, improvement,
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double , m2,
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double , lambda,
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double , g,
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double , xi,
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std::string, output);
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};
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class EMTResult: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(EMTResult,
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std::vector<std::vector<Complex>>, value,
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double, m2,
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double, lambda,
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double, g,
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double, xi);
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};
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template <typename SImpl>
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class TEMT: public Module<EMTPar>
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{
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public:
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typedef typename SImpl::Field Field;
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typedef typename SImpl::ComplexField ComplexField;
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public:
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// constructor
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TEMT(const std::string name);
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// destructor
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virtual ~TEMT(void) {};
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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_TMP(EMTSU2, TEMT<ScalarNxNAdjImplR<2>>, MScalarSUN);
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MODULE_REGISTER_TMP(EMTSU3, TEMT<ScalarNxNAdjImplR<3>>, MScalarSUN);
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MODULE_REGISTER_TMP(EMTSU4, TEMT<ScalarNxNAdjImplR<4>>, MScalarSUN);
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MODULE_REGISTER_TMP(EMTSU5, TEMT<ScalarNxNAdjImplR<5>>, MScalarSUN);
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MODULE_REGISTER_TMP(EMTSU6, TEMT<ScalarNxNAdjImplR<6>>, MScalarSUN);
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/******************************************************************************
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* TEMT implementation *
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******************************************************************************/
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// constructor /////////////////////////////////////////////////////////////////
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template <typename SImpl>
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TEMT<SImpl>::TEMT(const std::string name)
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: Module<EMTPar>(name)
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{}
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// dependencies/products ///////////////////////////////////////////////////////
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template <typename SImpl>
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std::vector<std::string> TEMT<SImpl>::getInput(void)
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{
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std::vector<std::string> in;
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for (unsigned int mu = 0; mu < env().getNd(); ++mu)
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for (unsigned int nu = mu; nu < env().getNd(); ++nu)
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{
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in.push_back(varName(par().kinetic, mu, nu));
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if (!par().improvement.empty())
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{
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in.push_back(varName(par().improvement, mu, nu));
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}
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}
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in.push_back(varName(par().kinetic, "sum"));
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in.push_back(varName(par().phiPow, 2));
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in.push_back(varName(par().phiPow, 4));
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return in;
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}
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template <typename SImpl>
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std::vector<std::string> TEMT<SImpl>::getOutput(void)
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{
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std::vector<std::string> out;
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for (unsigned int mu = 0; mu < env().getNd(); ++mu)
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for (unsigned int nu = mu; nu < env().getNd(); ++nu)
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{
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out.push_back(varName(getName(), mu, nu));
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}
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return out;
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}
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// setup ///////////////////////////////////////////////////////////////////////
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template <typename SImpl>
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void TEMT<SImpl>::setup(void)
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{
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for (unsigned int mu = 0; mu < env().getNd(); ++mu)
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for (unsigned int nu = mu; nu < env().getNd(); ++nu)
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{
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envCreateLat(ComplexField, varName(getName(), mu, nu));
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}
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}
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// execution ///////////////////////////////////////////////////////////////////
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template <typename SImpl>
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void TEMT<SImpl>::execute(void)
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{
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LOG(Message) << "Computing energy-momentum tensor" << std::endl;
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LOG(Message) << " kinetic terms: '" << par().kinetic << "'" << std::endl;
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LOG(Message) << " tr(phi^n): '" << par().phiPow << "'" << std::endl;
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if (!par().improvement.empty())
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{
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LOG(Message) << " improvement: '" << par().improvement << "'" << std::endl;
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}
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LOG(Message) << " m^2= " << par().m2 << std::endl;
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LOG(Message) << " lambda= " << par().lambda << std::endl;
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LOG(Message) << " g= " << par().g << std::endl;
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if (!par().improvement.empty())
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{
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LOG(Message) << " xi= " << par().xi << std::endl;
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}
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const unsigned int N = SImpl::Group::Dimension, nd = env().getNd();
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auto &trphi2 = envGet(ComplexField, varName(par().phiPow, 2));
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auto &trphi4 = envGet(ComplexField, varName(par().phiPow, 4));
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auto &sumkin = envGet(ComplexField, varName(par().kinetic, "sum"));
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EMTResult result;
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if (!par().output.empty())
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{
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result.m2 = par().m2;
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result.g = par().g;
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result.lambda = par().lambda;
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result.xi = par().xi;
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result.value.resize(nd, std::vector<Complex>(nd));
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}
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for (unsigned int mu = 0; mu < nd; ++mu)
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for (unsigned int nu = mu; nu < nd; ++nu)
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{
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auto &out = envGet(ComplexField, varName(getName(), mu, nu));
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auto &trkin = envGet(ComplexField, varName(par().kinetic, mu, nu));
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out = 2.*trkin;
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if (!par().improvement.empty())
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{
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auto &imp = envGet(ComplexField, varName(par().improvement, mu, nu));
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out += par().xi*imp;
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}
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if (mu == nu)
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{
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out -= sumkin + par().m2*trphi2 + par().lambda*trphi4;
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}
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out *= N/par().g;
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if (!par().output.empty())
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{
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result.value[mu][nu] = TensorRemove(sum(out));
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result.value[mu][nu] = result.value[nu][mu];
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}
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}
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if (!par().output.empty())
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{
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saveResult(par().output, "emt", result);
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}
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}
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END_MODULE_NAMESPACE
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END_HADRONS_NAMESPACE
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#endif // Hadrons_MScalarSUN_EMT_hpp_
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