mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-14 01:35:36 +00:00
225 lines
8.5 KiB
C++
225 lines
8.5 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: Hadrons/Modules/MContraction/SigmaToNucleonNonEye.hpp
|
|
|
|
Copyright (C) 2015-2019
|
|
|
|
Author: Antonin Portelli <antonin.portelli@me.com>
|
|
Author: Felix Erben <felix.erben@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_MContraction_SigmaToNucleonNonEye_hpp_
|
|
#define Hadrons_MContraction_SigmaToNucleonNonEye_hpp_
|
|
|
|
#include <Hadrons/Global.hpp>
|
|
#include <Hadrons/Module.hpp>
|
|
#include <Hadrons/ModuleFactory.hpp>
|
|
#include <Grid/qcd/utils/BaryonUtils.h>
|
|
|
|
BEGIN_HADRONS_NAMESPACE
|
|
|
|
/******************************************************************************
|
|
* SigmaToNucleonNonEye *
|
|
******************************************************************************/
|
|
/*
|
|
* Sigma-to-Nucleon 3-pt diagrams, non-eye topologies.
|
|
*
|
|
* Schematic:
|
|
* qs_xi qu_xf | qs_xi qd_xf
|
|
* /-->--¬ /-->--¬ | /-->--¬ /-->--¬
|
|
* / \ / \ | / \ / \
|
|
* / \ / \ | / \ / \
|
|
* / \ / \ | / \ / \
|
|
* * * G * | * G * * G *
|
|
* |\ * G | | |\ / \ /|
|
|
* | \ / \ /| | | \ / \ / |
|
|
* | \ / \ / | | | \ / \ / |
|
|
* | \ / \ / | | | \-->--/ \-->--/ |
|
|
* \ \-->--/ \-->--/ / | \ qu_xi qu_xf /
|
|
* \ qu_xi qd_xf / | \ /
|
|
* \ / | \ /
|
|
* \--------->----------/ | \--------->-----------/
|
|
* qu_spec | qu_spec
|
|
*
|
|
*
|
|
* analogously to the rare-kaon naming, the left diagram is named 'one-trace' and
|
|
* the diagram on the right 'two-trace'
|
|
*
|
|
* Propagators:
|
|
* * qu_xi, source at xi
|
|
* * qu_xf, source at xf
|
|
* * qu_spec, source at xi
|
|
* * qd_xf, source at xf
|
|
* * qs_xi, source at xi
|
|
*/
|
|
BEGIN_MODULE_NAMESPACE(MContraction)
|
|
|
|
class SigmaToNucleonNonEyePar: Serializable
|
|
{
|
|
public:
|
|
GRID_SERIALIZABLE_CLASS_MEMBERS(SigmaToNucleonNonEyePar,
|
|
std::string, qu_xi,
|
|
std::string, qu_xf,
|
|
std::string, qu_spec,
|
|
std::string, qd_xf,
|
|
std::string, qs_xi,
|
|
unsigned int, xf,
|
|
std::string, sink,
|
|
std::string, output);
|
|
};
|
|
|
|
template <typename FImpl>
|
|
class TSigmaToNucleonNonEye: public Module<SigmaToNucleonNonEyePar>
|
|
{
|
|
public:
|
|
FERM_TYPE_ALIASES(FImpl,);
|
|
BASIC_TYPE_ALIASES(ScalarImplCR, Scalar);
|
|
SINK_TYPE_ALIASES(Scalar);
|
|
typedef typename SpinMatrixField::vector_object::scalar_object SpinMatrix;
|
|
class Metadata: Serializable
|
|
{
|
|
public:
|
|
GRID_SERIALIZABLE_CLASS_MEMBERS(Metadata,
|
|
Gamma::Algebra, gamma_H,
|
|
Gamma::Algebra, gammaA_sigma,
|
|
Gamma::Algebra, gammaB_sigma,
|
|
Gamma::Algebra, gammaA_nucl,
|
|
Gamma::Algebra, gammaB_nucl,
|
|
int, trace);
|
|
};
|
|
typedef Correlator<Metadata, SpinMatrix> Result;
|
|
public:
|
|
// constructor
|
|
TSigmaToNucleonNonEye(const std::string name);
|
|
// destructor
|
|
virtual ~TSigmaToNucleonNonEye(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);
|
|
// Which gamma algebra was specified
|
|
Gamma::Algebra al;
|
|
};
|
|
|
|
MODULE_REGISTER_TMP(SigmaToNucleonNonEye, ARG(TSigmaToNucleonNonEye<FIMPL>), MContraction);
|
|
|
|
/******************************************************************************
|
|
* TSigmaToNucleonNonEye implementation *
|
|
******************************************************************************/
|
|
// constructor /////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
TSigmaToNucleonNonEye<FImpl>::TSigmaToNucleonNonEye(const std::string name)
|
|
: Module<SigmaToNucleonNonEyePar>(name)
|
|
{}
|
|
|
|
// dependencies/products ///////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
std::vector<std::string> TSigmaToNucleonNonEye<FImpl>::getInput(void)
|
|
{
|
|
std::vector<std::string> input = {par().qu_xi, par().qu_xf, par().qu_spec, par().qd_xf, par().qs_xi, par().sink};
|
|
|
|
return input;
|
|
}
|
|
|
|
template <typename FImpl>
|
|
std::vector<std::string> TSigmaToNucleonNonEye<FImpl>::getOutput(void)
|
|
{
|
|
std::vector<std::string> out = {};
|
|
|
|
return out;
|
|
}
|
|
|
|
// setup ///////////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
void TSigmaToNucleonNonEye<FImpl>::setup(void)
|
|
{
|
|
envTmpLat(SpinMatrixField, "c");
|
|
}
|
|
|
|
// execution ///////////////////////////////////////////////////////////////////
|
|
template <typename FImpl>
|
|
void TSigmaToNucleonNonEye<FImpl>::execute(void)
|
|
{
|
|
const Gamma GammaB(Gamma::Algebra::SigmaXZ); // C*gamma_5
|
|
const Gamma Id(Gamma::Algebra::Identity); // C*gamma_5
|
|
|
|
LOG(Message) << "Computing sigma-to-nucleon contractions '" << getName() << "'" << std::endl;
|
|
LOG(Message) << "' with (Gamma^A,Gamma^B)_sigma = ( Identity, C*gamma_5 ) and (Gamma^A,Gamma^B)_nucl = ( Identity, C*gamma_5 )" << std::endl;
|
|
LOG(Message) << " using sink " << par().sink << "." << std::endl;
|
|
|
|
envGetTmp(SpinMatrixField, c);
|
|
std::vector<SpinMatrix> buf;
|
|
|
|
std::vector<Result> result;
|
|
Result r;
|
|
r.info.gammaA_sigma = Id.g;
|
|
r.info.gammaB_sigma = GammaB.g;
|
|
r.info.gammaA_nucl = Id.g;
|
|
r.info.gammaB_nucl = GammaB.g;
|
|
|
|
auto &qu_xi = envGet(PropagatorField, par().qu_xi);
|
|
auto &qu_xf = envGet(PropagatorField, par().qu_xf);
|
|
auto &qu_spec = envGet(SlicedPropagator, par().qu_spec);
|
|
auto &qd_xf = envGet(PropagatorField, par().qd_xf);
|
|
auto &qs_xi = envGet(PropagatorField, par().qs_xi);
|
|
auto qut = qu_spec[par().xf];
|
|
for (auto &G: Gamma::gall)
|
|
{
|
|
r.info.gamma_H = G.g;
|
|
//Operator Q1, equivalent to the two-trace case in the rare-kaons module
|
|
c=Zero();
|
|
BaryonUtils<FIMPL>::Sigma_to_Nucleon_NonEye(qu_xi,qu_xf,qut,qd_xf,qs_xi,G,GammaB,GammaB,"Q1",c);
|
|
sliceSum(c,buf,Tp);
|
|
r.corr.clear();
|
|
for (unsigned int t = 0; t < buf.size(); ++t)
|
|
{
|
|
r.corr.push_back(buf[t]);
|
|
}
|
|
r.info.trace = 2;
|
|
result.push_back(r);
|
|
//Operator Q2, equivalent to the one-trace case in the rare-kaons module
|
|
c=Zero();
|
|
BaryonUtils<FIMPL>::Sigma_to_Nucleon_NonEye(qu_xi,qu_xf,qut,qd_xf,qs_xi,G,GammaB,GammaB,"Q2",c);
|
|
sliceSum(c,buf,Tp);
|
|
r.corr.clear();
|
|
for (unsigned int t = 0; t < buf.size(); ++t)
|
|
{
|
|
r.corr.push_back(buf[t]);
|
|
}
|
|
r.info.trace = 1;
|
|
result.push_back(r);
|
|
}
|
|
|
|
saveResult(par().output, "StN_NonEye", result);
|
|
|
|
}
|
|
|
|
END_MODULE_NAMESPACE
|
|
|
|
END_HADRONS_NAMESPACE
|
|
|
|
#endif // Hadrons_MContraction_SigmaToNucleonNonEye_hpp_
|