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122 lines
4.8 KiB
C++
122 lines
4.8 KiB
C++
/*******************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: tests/hadrons/Test_hadrons_3pt_contractions.cc
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Copyright (C) 2017
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Author: Andrew Lawson <andrew.lawson1991@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory.
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*******************************************************************************/
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#include "Test_hadrons.hpp"
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using namespace Grid;
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using namespace Hadrons;
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int main(int argc, char *argv[])
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{
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// initialization //////////////////////////////////////////////////////////
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HADRONS_DEFAULT_INIT;
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// run setup ///////////////////////////////////////////////////////////////
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Application application;
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double mass = 0.04;
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double M5 = 1.8;
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unsigned int Ls = 12;
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unsigned int nt = GridDefaultLatt()[Tp];
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unsigned int t_i = 0;
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unsigned int t_f = nt / 2;
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std::string mom = "1. 0. 0. 0.";
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// global parameters
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HADRONS_DEFAULT_GLOBALS(application);
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// gauge field
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std::string gaugeField = "gauge";
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application.createModule<MGauge::Unit>(gaugeField);
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// Action & solver setup.
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std::string action = "DWF";
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std::string solver = "CG";
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makeDWFAction(application, action, gaugeField, mass, M5, Ls);
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makeRBPrecCGSolver(application, solver, action);
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/***************************************************************************
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* Weak Contraction test: Non-Eye class.
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**************************************************************************/
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// Make wall source propagators for each leg of 4-quark vertex.
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std::string q_i_0 = "q_i_0";
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std::string q_i_p = "q_i_p";
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std::string q_f_0 = "q_f_0";
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std::string q_f_p = "q_f_p";
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MAKE_WALL_PROP(t_i, q_i_0, solver);
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MAKE_WALL_PROP(t_f, q_f_0, solver);
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MAKE_3MOM_WALL_PROP(t_i, mom, q_i_p, solver);
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MAKE_3MOM_WALL_PROP(t_f, mom, q_f_p, solver);
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// Perform contractions, zero and non-zero momentum.
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std::string HW_CW_0 = LABEL_3PT("HW_CW_0", t_i, t_f);
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std::string HW_CW_p = LABEL_3PT("HW_CW_p", t_i, t_f);
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weakContractionNonEye(application, 3, q_i_0, q_i_0, q_f_0, q_f_0, HW_CW_0);
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weakContractionNonEye(application, 3, q_i_0, q_i_p, q_f_p, q_f_0, HW_CW_p);
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/***************************************************************************
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* Weak Contraction test: Eye-class.
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**************************************************************************/
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// Create random propagator for loop.
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std::string eta = "noise_source";
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makeNoiseSource(application, eta, 0, nt - 1);
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std::string loopProp = "loop";
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std::string loopRes = loopProp + "_res";
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makePropagator(application, loopRes, eta, solver);
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makeLoop(application, loopProp, eta, loopRes);
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// Wall sink smear the propagator directly connecting the source & sink.
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// (i.e. make point sink but smear before the contraction)
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std::string wallSink = "wall_sink";
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std::string qWall = "q_wall";
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makePointSink(application, wallSink);
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sinkSmear(application, wallSink, q_i_0, qWall);
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// Perform contractions, zero and non-zero momentum.
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std::string HW_SE_0 = LABEL_3PT("HW_SE_0", t_i, t_f);
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std::string HW_SE_p = LABEL_3PT("HW_SE_p", t_i, t_f);
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weakContractionEye(application, 3, qWall, q_i_0, q_f_p, loopProp, HW_SE_0, t_f);
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weakContractionEye(application, 3, qWall, q_i_p, q_f_p, loopProp, HW_SE_p, t_f);
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/***************************************************************************
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* Gamma insertion test.
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**************************************************************************/
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Gamma::Algebra gamma = Gamma::Algebra::GammaT;
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std::string sd_0 = LABEL_3PT("sd_0", t_i, t_f);
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std::string sd_p = LABEL_3PT("sd_p", t_i, t_f);
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gamma3ptContraction(application, 3, qWall, q_i_0, q_f_0, sd_0, t_f, gamma);
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gamma3ptContraction(application, 3, qWall, q_i_p, q_f_p, sd_p, t_f, gamma);
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// execution
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application.saveParameterFile("ContractionTest3pt.xml");
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application.run();
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// epilogue
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LOG(Message) << "Grid is finalizing now" << std::endl;
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Grid_finalize();
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return EXIT_SUCCESS;
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} |