mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 15:55:37 +00:00
149 lines
4.5 KiB
C++
149 lines
4.5 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: extras/Hadrons/Modules/MSource/Wall.hpp
|
|
|
|
Copyright (C) 2017
|
|
|
|
Author: Andrew Lawson <andrew.lawson1991@gmail.com>
|
|
|
|
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_WallSource_hpp_
|
|
#define Hadrons_MSource_WallSource_hpp_
|
|
|
|
#include <Grid/Hadrons/Global.hpp>
|
|
#include <Grid/Hadrons/Module.hpp>
|
|
#include <Grid/Hadrons/ModuleFactory.hpp>
|
|
|
|
BEGIN_HADRONS_NAMESPACE
|
|
|
|
/*
|
|
|
|
Wall source
|
|
-----------------------------
|
|
* src_x = delta(x_3 - tW) * exp(i x.mom)
|
|
|
|
* options:
|
|
- tW: source timeslice (integer)
|
|
- mom: momentum insertion, space-separated float sequence (e.g ".1 .2 1. 0.")
|
|
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* Wall *
|
|
******************************************************************************/
|
|
BEGIN_MODULE_NAMESPACE(MSource)
|
|
|
|
class WallPar: Serializable
|
|
{
|
|
public:
|
|
GRID_SERIALIZABLE_CLASS_MEMBERS(WallPar,
|
|
unsigned int, tW,
|
|
std::string, mom);
|
|
};
|
|
|
|
template <typename FImpl>
|
|
class TWall: public Module<WallPar>
|
|
{
|
|
public:
|
|
FERM_TYPE_ALIASES(FImpl,);
|
|
public:
|
|
// constructor
|
|
TWall(const std::string name);
|
|
// destructor
|
|
virtual ~TWall(void) = default;
|
|
// 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);
|
|
};
|
|
|
|
MODULE_REGISTER_NS(Wall, TWall<FIMPL>, MSource);
|
|
|
|
/******************************************************************************
|
|
* TWall implementation *
|
|
******************************************************************************/
|
|
// constructor /////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
TWall<FImpl>::TWall(const std::string name)
|
|
: Module<WallPar>(name)
|
|
{}
|
|
|
|
// dependencies/products ///////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
std::vector<std::string> TWall<FImpl>::getInput(void)
|
|
{
|
|
std::vector<std::string> in;
|
|
|
|
return in;
|
|
}
|
|
|
|
template <typename FImpl>
|
|
std::vector<std::string> TWall<FImpl>::getOutput(void)
|
|
{
|
|
std::vector<std::string> out = {getName()};
|
|
|
|
return out;
|
|
}
|
|
|
|
// setup ///////////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
void TWall<FImpl>::setup(void)
|
|
{
|
|
env().template registerLattice<PropagatorField>(getName());
|
|
}
|
|
|
|
// execution ///////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
void TWall<FImpl>::execute(void)
|
|
{
|
|
LOG(Message) << "Generating wall source at t = " << par().tW
|
|
<< " with momentum " << par().mom << std::endl;
|
|
|
|
PropagatorField &src = *env().template createLattice<PropagatorField>(getName());
|
|
Lattice<iScalar<vInteger>> t(env().getGrid());
|
|
LatticeComplex ph(env().getGrid()), coor(env().getGrid());
|
|
std::vector<Real> p;
|
|
Complex i(0.0,1.0);
|
|
|
|
p = strToVec<Real>(par().mom);
|
|
ph = zero;
|
|
for(unsigned int mu = 0; mu < Nd; mu++)
|
|
{
|
|
LatticeCoordinate(coor, mu);
|
|
ph = ph + p[mu]*coor*((1./(env().getGrid()->_fdimensions[mu])));
|
|
}
|
|
ph = exp((Real)(2*M_PI)*i*ph);
|
|
LatticeCoordinate(t, Tp);
|
|
src = 1.;
|
|
src = where((t == par().tW), src*ph, 0.*src);
|
|
}
|
|
|
|
END_MODULE_NAMESPACE
|
|
|
|
END_HADRONS_NAMESPACE
|
|
|
|
#endif // Hadrons_MSource_WallSource_hpp_
|