mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 07:55:35 +00:00
101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
/*******************************************************************************
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: programs/Hadrons/CMeson.cc
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Antonin Portelli <antonin.portelli@me.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.
|
|
*******************************************************************************/
|
|
|
|
#include <Hadrons/CMeson.hpp>
|
|
|
|
using namespace Grid;
|
|
using namespace QCD;
|
|
using namespace Hadrons;
|
|
|
|
/******************************************************************************
|
|
* CMeson implementation *
|
|
******************************************************************************/
|
|
// constructor /////////////////////////////////////////////////////////////////
|
|
CMeson::CMeson(const std::string name)
|
|
: Module(name)
|
|
{}
|
|
|
|
// parse parameters ////////////////////////////////////////////////////////////
|
|
void CMeson::parseParameters(XmlReader &reader, const std::string name)
|
|
{
|
|
read(reader, name, par_);
|
|
}
|
|
|
|
// dependencies/products ///////////////////////////////////////////////////////
|
|
std::vector<std::string> CMeson::getInput(void)
|
|
{
|
|
std::vector<std::string> input = {par_.q1, par_.q2};
|
|
|
|
return input;
|
|
}
|
|
|
|
std::vector<std::string> CMeson::getOutput(void)
|
|
{
|
|
std::vector<std::string> output = {getName()};
|
|
|
|
return output;
|
|
}
|
|
|
|
// execution ///////////////////////////////////////////////////////////////////
|
|
void CMeson::execute(void)
|
|
{
|
|
LOG(Message) << "Computing meson contraction '" << getName() << "' using"
|
|
<< " quarks '" << par_.q1 << " and '" << par_.q2 << "'"
|
|
<< std::endl;
|
|
|
|
XmlWriter writer(par_.output);
|
|
LatticePropagator &q1 = *env().get<LatticePropagator>(par_.q1);
|
|
LatticePropagator &q2 = *env().get<LatticePropagator>(par_.q2);
|
|
LatticeComplex c(env().getGrid());
|
|
SpinMatrix g[Ns*Ns], g5;
|
|
std::vector<TComplex> buf;
|
|
Result result;
|
|
unsigned int nt = env().getGrid()->GlobalDimensions()[Tp];
|
|
|
|
g5 = makeGammaProd(Ns*Ns - 1);
|
|
result.corr.resize(Ns*Ns);
|
|
for (unsigned int i = 0; i < Ns*Ns; ++i)
|
|
{
|
|
g[i] = makeGammaProd(i);
|
|
}
|
|
for (unsigned int iSink = 0; iSink < Ns*Ns; ++iSink)
|
|
{
|
|
result.corr[iSink].resize(Ns*Ns);
|
|
for (unsigned int iSrc = 0; iSrc < Ns*Ns; ++iSrc)
|
|
{
|
|
c = trace(g[iSink]*q1*g[iSrc]*g5*adj(q2)*g5);
|
|
sliceSum(c, buf, Tp);
|
|
result.corr[iSink][iSrc].resize(buf.size());
|
|
for (unsigned int t = 0; t < buf.size(); ++t)
|
|
{
|
|
result.corr[iSink][iSrc][t] = TensorRemove(buf[t]);
|
|
}
|
|
}
|
|
}
|
|
write(writer, "meson", result);
|
|
}
|