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92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/gauge/WilsonGaugeAction.h
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Copyright (C) 2015
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: neo <cossu@post.kek.jp>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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Author: Guido Cossu <guido.cossu@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
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directory
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*************************************************************************************/
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/* END LEGAL */
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#pragma once
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NAMESPACE_BEGIN(Grid);
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////////////////////////////////////////////////////////////////////////
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// Jacobian Action ..
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////////////////////////////////////////////////////////////////////////
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template <class Gimpl>
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class JacobianAction : public Action<typename Gimpl::GaugeField> {
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public:
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INHERIT_GIMPL_TYPES(Gimpl);
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SmearedConfigurationMasked<Gimpl> * smearer;
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/////////////////////////// constructors
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explicit JacobianAction(SmearedConfigurationMasked<Gimpl> * _smearer ) { smearer=_smearer;};
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virtual std::string action_name() {return "JacobianAction";}
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virtual std::string LogParameters(){
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std::stringstream sstream;
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sstream << GridLogMessage << "[JacobianAction] " << std::endl;
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return sstream.str();
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}
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//////////////////////////////////
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// Usual cases are not used
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//////////////////////////////////
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virtual void refresh(const GaugeField &U, GridSerialRNG &sRNG, GridParallelRNG &pRNG){ assert(0);};
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virtual RealD S(const GaugeField &U) { assert(0); }
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virtual void deriv(const GaugeField &U, GaugeField &dSdU) { assert(0); }
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//////////////////////////////////
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// Functions of smart configs only
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//////////////////////////////////
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virtual void refresh(ConfigurationBase<GaugeField> & U, GridSerialRNG &sRNG, GridParallelRNG& pRNG)
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{
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return;
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}
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virtual RealD S(ConfigurationBase<GaugeField>& U)
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{
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// det M = e^{ - ( - logDetM) }
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assert( &U == smearer );
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return -smearer->logDetJacobian();
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}
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virtual RealD Sinitial(ConfigurationBase<GaugeField>& U)
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{
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return S(U);
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}
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virtual void deriv(ConfigurationBase<GaugeField>& U, GaugeField& dSdU)
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{
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assert( &U == smearer );
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smearer->logDetJacobianForce(dSdU);
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}
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private:
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};
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NAMESPACE_END(Grid);
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