mirror of
https://github.com/paboyle/Grid.git
synced 2024-09-20 01:05:38 +01:00
z2-momentum phase module
This commit is contained in:
Felix Erben
parent
b473405652
commit
ccb5e8374b
35
Hadrons/Modules/MSource/MomentumPhase.cc
Normal file
35
Hadrons/Modules/MSource/MomentumPhase.cc
Normal file
@ -0,0 +1,35 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: Hadrons/Modules/MSource/MomentumPhase.cc
|
||||
|
||||
Copyright (C) 2015-2019
|
||||
|
||||
Author: Felix Erben <ferben@ed.ac.uk>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
See the full license in the file "LICENSE" in the top level distribution directory
|
||||
*************************************************************************************/
|
||||
/* END LEGAL */
|
||||
#include <Hadrons/Modules/MSource/MomentumPhase.hpp>
|
||||
|
||||
using namespace Grid;
|
||||
using namespace Hadrons;
|
||||
using namespace MSource;
|
||||
|
||||
template class Grid::Hadrons::MSource::TMomentumPhase<FIMPL>;
|
||||
template class Grid::Hadrons::MSource::TMomentumPhase<ZFIMPL>;
|
||||
160
Hadrons/Modules/MSource/MomentumPhase.hpp
Normal file
160
Hadrons/Modules/MSource/MomentumPhase.hpp
Normal file
@ -0,0 +1,160 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: Hadrons/Modules/MSource/MomentumPhase.hpp
|
||||
|
||||
Copyright (C) 2015-2019
|
||||
|
||||
Author: Felix Erben <ferben@ed.ac.uk>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
See the full license in the file "LICENSE" in the top level distribution directory
|
||||
*************************************************************************************/
|
||||
/* END LEGAL */
|
||||
|
||||
#ifndef Hadrons_MSource_MomentumPhase_hpp_
|
||||
#define Hadrons_MSource_MomentumPhase_hpp_
|
||||
|
||||
#include <Hadrons/Global.hpp>
|
||||
#include <Hadrons/Module.hpp>
|
||||
#include <Hadrons/ModuleFactory.hpp>
|
||||
|
||||
BEGIN_HADRONS_NAMESPACE
|
||||
|
||||
/*
|
||||
|
||||
Multiply source field by momentum phase
|
||||
-----------------------------
|
||||
* can be used to multiply a Z2-wall source by a phase e^{ipx}, which is needed for
|
||||
* 2pt-correlation functions of mesons with nonzero momenta.
|
||||
|
||||
*/
|
||||
|
||||
/******************************************************************************
|
||||
* MomentumPhase *
|
||||
******************************************************************************/
|
||||
BEGIN_MODULE_NAMESPACE(MSource)
|
||||
|
||||
class MomentumPhasePar: Serializable
|
||||
{
|
||||
public:
|
||||
GRID_SERIALIZABLE_CLASS_MEMBERS(MomentumPhasePar,
|
||||
std::string, src,
|
||||
std::string, mom);
|
||||
};
|
||||
|
||||
template <typename FImpl>
|
||||
class TMomentumPhase: public Module<MomentumPhasePar>
|
||||
{
|
||||
public:
|
||||
FERM_TYPE_ALIASES(FImpl,);
|
||||
public:
|
||||
// constructor
|
||||
TMomentumPhase(const std::string name);
|
||||
// destructor
|
||||
virtual ~TMomentumPhase(void) {};
|
||||
// dependency relation
|
||||
virtual std::vector<std::string> getInput(void);
|
||||
virtual std::vector<std::string> getOutput(void);
|
||||
protected:
|
||||
// setup
|
||||
virtual void setup(void);
|
||||
// execution
|
||||
virtual void execute(void);
|
||||
private:
|
||||
bool hasPhase_{false};
|
||||
std::string momphName_, tName_;
|
||||
};
|
||||
|
||||
MODULE_REGISTER_TMP(MomentumPhase, TMomentumPhase<FIMPL>, MSource);
|
||||
MODULE_REGISTER_TMP(ZMomentumPhase, TMomentumPhase<ZFIMPL>, MSource);
|
||||
|
||||
/******************************************************************************
|
||||
* TMomentumPhase implementation *
|
||||
******************************************************************************/
|
||||
// constructor /////////////////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
TMomentumPhase<FImpl>::TMomentumPhase(const std::string name)
|
||||
: Module<MomentumPhasePar>(name)
|
||||
, momphName_ (name + "_momph")
|
||||
, tName_ (name + "_t")
|
||||
{}
|
||||
|
||||
// dependencies/products ///////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
std::vector<std::string> TMomentumPhase<FImpl>::getInput(void)
|
||||
{
|
||||
std::vector<std::string> in = {par().src};
|
||||
|
||||
return in;
|
||||
}
|
||||
|
||||
template <typename FImpl>
|
||||
std::vector<std::string> TMomentumPhase<FImpl>::getOutput(void)
|
||||
{
|
||||
std::vector<std::string> out = {getName()};
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
// setup ///////////////////////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
void TMomentumPhase<FImpl>::setup(void)
|
||||
{
|
||||
envCreateLat(PropagatorField, getName());
|
||||
envCache(Lattice<iScalar<vInteger>>, tName_, 1, envGetGrid(LatticeComplex));
|
||||
envCacheLat(LatticeComplex, momphName_);
|
||||
envTmpLat(LatticeComplex, "coor");
|
||||
}
|
||||
|
||||
// execution ///////////////////////////////////////////////////////////////////
|
||||
template <typename FImpl>
|
||||
void TMomentumPhase<FImpl>::execute(void)
|
||||
{
|
||||
LOG(Message) << "Multiplying source field " << par().src
|
||||
<< " by momentum phase "
|
||||
<< par().mom << std::endl;
|
||||
auto &out = envGet(PropagatorField, getName());
|
||||
auto &src = envGet(PropagatorField, par().src);
|
||||
auto &ph = envGet(LatticeComplex, momphName_);
|
||||
auto &t = envGet(Lattice<iScalar<vInteger>>, tName_);
|
||||
|
||||
if (!hasPhase_)
|
||||
{
|
||||
Complex i(0.0,1.0);
|
||||
std::vector<Real> p;
|
||||
|
||||
envGetTmp(LatticeComplex, coor);
|
||||
p = strToVec<Real>(par().mom);
|
||||
ph = zero;
|
||||
for(unsigned int mu = 0; mu < env().getNd(); mu++)
|
||||
{
|
||||
LatticeCoordinate(coor, mu);
|
||||
ph = ph + (p[mu]/env().getDim(mu))*coor;
|
||||
}
|
||||
ph = exp((Real)(2*M_PI)*i*ph);
|
||||
LatticeCoordinate(t, Tp);
|
||||
hasPhase_ = true;
|
||||
}
|
||||
out = ph*src;
|
||||
}
|
||||
|
||||
END_MODULE_NAMESPACE
|
||||
|
||||
END_HADRONS_NAMESPACE
|
||||
|
||||
#endif // Hadrons_MSource_MomentumPhase_hpp_
|
||||
Loading…
Reference in New Issue
Block a user