mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 07:55:35 +00:00
HADRONS: 4pt Weak + current disconnected topology (e.g. for rare neutral kaon decays)
This commit is contained in:
Lanny91
parent
c9dc22efa1
commit
2c81696fdd
@ -35,6 +35,7 @@ See the full license in the file "LICENSE" in the top level distribution directo
|
||||
#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
|
||||
#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonianEye.hpp>
|
||||
#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonianNonEye.hpp>
|
||||
#include <Grid/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp>
|
||||
#include <Grid/Hadrons/Modules/MGauge/Load.hpp>
|
||||
#include <Grid/Hadrons/Modules/MGauge/Random.hpp>
|
||||
#include <Grid/Hadrons/Modules/MGauge/Unit.hpp>
|
||||
|
||||
135
extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.cc
Normal file
135
extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.cc
Normal file
@ -0,0 +1,135 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.cc
|
||||
|
||||
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 */
|
||||
|
||||
#include <Grid/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp>
|
||||
|
||||
using namespace Grid;
|
||||
using namespace Hadrons;
|
||||
using namespace MContraction;
|
||||
|
||||
/*
|
||||
* Weak Hamiltonian + current contractions, disconnected topology for neutral
|
||||
* mesons.
|
||||
*
|
||||
* These contractions are generated by operators Q_1,...,10 of the dS=1 Weak
|
||||
* Hamiltonian in the physical basis and an additional current J (see e.g.
|
||||
* Fig 11 of arXiv:1507.03094).
|
||||
*
|
||||
* Schematic:
|
||||
*
|
||||
* q2 q4 q3
|
||||
* /--<--¬ /---<--¬ /---<--¬
|
||||
* / \ / \ / \
|
||||
* i * * H_W | J * * f
|
||||
* \ / \ / \ /
|
||||
* \--->---/ \-------/ \------/
|
||||
* q1
|
||||
*
|
||||
* options
|
||||
* - q1: input propagator 1 (string)
|
||||
* - q2: input propagator 2 (string)
|
||||
* - q3: input propagator 3 (string), assumed to be sequential propagator
|
||||
* - q4: input propagator 4 (string), assumed to be a loop
|
||||
*
|
||||
* type 1: trace(q1*adj(q2)*g5*gL[mu])*trace(loop*gL[mu])*trace(q3*g5)
|
||||
* type 2: trace(q1*adj(q2)*g5*gL[mu]*loop*gL[mu])*trace(q3*g5)
|
||||
*/
|
||||
|
||||
/*******************************************************************************
|
||||
* TWeakNeutral4ptDisc implementation *
|
||||
******************************************************************************/
|
||||
// constructor /////////////////////////////////////////////////////////////////
|
||||
TWeakNeutral4ptDisc::TWeakNeutral4ptDisc(const std::string name)
|
||||
: Module<WeakHamiltonianPar>(name)
|
||||
{}
|
||||
|
||||
// dependencies/products ///////////////////////////////////////////////////////
|
||||
std::vector<std::string> TWeakNeutral4ptDisc::getInput(void)
|
||||
{
|
||||
std::vector<std::string> in = {par().q1, par().q2, par().q3, par().q4};
|
||||
|
||||
return in;
|
||||
}
|
||||
|
||||
std::vector<std::string> TWeakNeutral4ptDisc::getOutput(void)
|
||||
{
|
||||
std::vector<std::string> out = {getName()};
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
// setup ///////////////////////////////////////////////////////////////////////
|
||||
void TWeakNeutral4ptDisc::setup(void)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
// execution ///////////////////////////////////////////////////////////////////
|
||||
void TWeakNeutral4ptDisc::execute(void)
|
||||
{
|
||||
LOG(Message) << "Computing Weak Hamiltonian neutral disconnected contractions '"
|
||||
<< getName() << "' using quarks '" << par().q1 << "', '"
|
||||
<< par().q2 << ", '" << par().q3 << "' and '" << par().q4
|
||||
<< "'." << std::endl;
|
||||
|
||||
CorrWriter writer(par().output);
|
||||
PropagatorField &q1 = *env().template getObject<PropagatorField>(par().q1);
|
||||
PropagatorField &q2 = *env().template getObject<PropagatorField>(par().q2);
|
||||
PropagatorField &q3 = *env().template getObject<PropagatorField>(par().q3);
|
||||
PropagatorField &q4 = *env().template getObject<PropagatorField>(par().q4);
|
||||
Gamma g5 = Gamma(Gamma::Algebra::Gamma5);
|
||||
LatticeComplex expbuf(env().getGrid());
|
||||
std::vector<TComplex> corrbuf;
|
||||
std::vector<Result> result(n_neut_disc_diag);
|
||||
unsigned int ndim = env().getNd();
|
||||
|
||||
PropagatorField tmp(env().getGrid());
|
||||
std::vector<PropagatorField> meson(ndim, tmp);
|
||||
std::vector<PropagatorField> loop(ndim, tmp);
|
||||
LatticeComplex curr(env().getGrid());
|
||||
|
||||
// Setup for type 1 contractions.
|
||||
for (int mu = 0; mu < ndim; ++mu)
|
||||
{
|
||||
meson[mu] = MAKE_DISC_MESON(q1, q2, GammaL(Gamma::gmu[mu]));
|
||||
loop[mu] = MAKE_DISC_LOOP(q4, GammaL(Gamma::gmu[mu]));
|
||||
}
|
||||
curr = MAKE_DISC_CURR(q3, GammaL(Gamma::Algebra::Gamma5));
|
||||
|
||||
// Perform type 1 contractions.
|
||||
SUM_MU(expbuf, trace(meson[mu]*loop[mu]))
|
||||
expbuf *= curr;
|
||||
MAKE_DIAG(expbuf, corrbuf, result[neut_disc_1_diag], "HW_disc0_1")
|
||||
|
||||
// Perform type 2 contractions.
|
||||
SUM_MU(expbuf, trace(meson[mu])*trace(loop[mu]))
|
||||
expbuf *= curr;
|
||||
MAKE_DIAG(expbuf, corrbuf, result[neut_disc_2_diag], "HW_disc0_2")
|
||||
|
||||
write(writer, "HW_disc0", result);
|
||||
}
|
||||
84
extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp
Normal file
84
extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.hpp
Normal file
@ -0,0 +1,84 @@
|
||||
/*************************************************************************************
|
||||
|
||||
Grid physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: extras/Hadrons/Modules/MContraction/WeakNeutral4ptDisc.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_WeakNeutral4ptDisc_hpp_
|
||||
#define Hadrons_WeakNeutral4ptDisc_hpp_
|
||||
|
||||
#include <Grid/Hadrons/Modules/MContraction/WeakHamiltonian.hpp>
|
||||
|
||||
BEGIN_HADRONS_NAMESPACE
|
||||
|
||||
/******************************************************************************
|
||||
* WeakNeutral4ptDisc *
|
||||
******************************************************************************/
|
||||
BEGIN_MODULE_NAMESPACE(MContraction)
|
||||
|
||||
enum
|
||||
{
|
||||
neut_disc_1_diag = 0,
|
||||
neut_disc_2_diag = 1,
|
||||
n_neut_disc_diag = 2
|
||||
};
|
||||
|
||||
// Neutral 4pt disconnected subdiagram contractions.
|
||||
#define MAKE_DISC_MESON(Q_1, Q_2, gamma) (Q_1*adj(Q_2)*g5*gamma)
|
||||
#define MAKE_DISC_LOOP(Q_LOOP, gamma) (Q_LOOP*gamma)
|
||||
#define MAKE_DISC_CURR(Q_c, gamma) (trace(Q_c*gamma))
|
||||
|
||||
class TWeakNeutral4ptDisc: public Module<WeakHamiltonianPar>
|
||||
{
|
||||
public:
|
||||
TYPE_ALIASES(FIMPL,)
|
||||
class Result: Serializable
|
||||
{
|
||||
public:
|
||||
GRID_SERIALIZABLE_CLASS_MEMBERS(Result,
|
||||
std::string, name,
|
||||
std::vector<Complex>, corr);
|
||||
};
|
||||
public:
|
||||
// constructor
|
||||
TWeakNeutral4ptDisc(const std::string name);
|
||||
// destructor
|
||||
virtual ~TWeakNeutral4ptDisc(void) = default;
|
||||
// dependency relation
|
||||
virtual std::vector<std::string> getInput(void);
|
||||
virtual std::vector<std::string> getOutput(void);
|
||||
// setup
|
||||
virtual void setup(void);
|
||||
// execution
|
||||
virtual void execute(void);
|
||||
};
|
||||
|
||||
MODULE_REGISTER_NS(WeakNeutral4ptDisc, TWeakNeutral4ptDisc, MContraction);
|
||||
|
||||
END_MODULE_NAMESPACE
|
||||
|
||||
END_HADRONS_NAMESPACE
|
||||
|
||||
#endif // Hadrons_WeakNeutral4ptDisc_hpp_
|
||||
@ -1,6 +1,7 @@
|
||||
modules_cc =\
|
||||
Modules/MContraction/WeakHamiltonianEye.cc \
|
||||
Modules/MContraction/WeakHamiltonianNonEye.cc \
|
||||
Modules/MContraction/WeakNeutral4ptDisc.cc \
|
||||
Modules/MGauge/Load.cc \
|
||||
Modules/MGauge/Random.cc \
|
||||
Modules/MGauge/Unit.cc
|
||||
@ -15,6 +16,7 @@ modules_hpp =\
|
||||
Modules/MContraction/WeakHamiltonian.hpp \
|
||||
Modules/MContraction/WeakHamiltonianEye.hpp \
|
||||
Modules/MContraction/WeakHamiltonianNonEye.hpp \
|
||||
Modules/MContraction/WeakNeutral4ptDisc.hpp \
|
||||
Modules/MGauge/Load.hpp \
|
||||
Modules/MGauge/Random.hpp \
|
||||
Modules/MGauge/Unit.hpp \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user