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149 lines
4.7 KiB
C++
149 lines
4.7 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: Hadrons/Modules/MScalarSUN/TrMag.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_TrMag_hpp_
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#define Hadrons_MScalarSUN_TrMag_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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* Trace of powers of the magnetisation *
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******************************************************************************/
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BEGIN_MODULE_NAMESPACE(MScalarSUN)
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class TrMagPar: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(TrMagPar,
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std::string, field,
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unsigned int, maxPow,
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std::string, output);
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};
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class TrMagResult: Serializable
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{
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(TrMagResult,
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std::string, op,
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Real, value);
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};
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template <typename SImpl>
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class TTrMag: public Module<TrMagPar>
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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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TTrMag(const std::string name);
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// destructor
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virtual ~TTrMag(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(TrMagSU2, TTrMag<ScalarNxNAdjImplR<2>>, MScalarSUN);
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MODULE_REGISTER_TMP(TrMagSU3, TTrMag<ScalarNxNAdjImplR<3>>, MScalarSUN);
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MODULE_REGISTER_TMP(TrMagSU4, TTrMag<ScalarNxNAdjImplR<4>>, MScalarSUN);
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MODULE_REGISTER_TMP(TrMagSU5, TTrMag<ScalarNxNAdjImplR<5>>, MScalarSUN);
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MODULE_REGISTER_TMP(TrMagSU6, TTrMag<ScalarNxNAdjImplR<6>>, MScalarSUN);
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/******************************************************************************
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* TTrMag implementation *
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******************************************************************************/
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// constructor /////////////////////////////////////////////////////////////////
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template <typename SImpl>
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TTrMag<SImpl>::TTrMag(const std::string name)
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: Module<TrMagPar>(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> TTrMag<SImpl>::getInput(void)
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{
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std::vector<std::string> in = {par().field};
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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> TTrMag<SImpl>::getOutput(void)
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{
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std::vector<std::string> out = {};
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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 TTrMag<SImpl>::setup(void)
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{}
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// execution ///////////////////////////////////////////////////////////////////
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template <typename SImpl>
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void TTrMag<SImpl>::execute(void)
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{
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LOG(Message) << "Computing tr(mag^n) for n even up to " << par().maxPow
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<< std::endl;
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std::vector<TrMagResult> result;
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auto &phi = envGet(Field, par().field);
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auto m2 = sum(phi);
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auto mn = m2;
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m2 = -m2*m2;
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mn = 1.;
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for (unsigned int n = 2; n <= par().maxPow; n += 2)
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{
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TrMagResult r;
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mn = mn*m2;
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r.op = "tr(mag^" + std::to_string(n) + ")";
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r.value = TensorRemove(trace(mn)).real();
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result.push_back(r);
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}
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saveResult(par().output, "trmag", 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_MScalarSUN_TrMag_hpp_
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