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94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/*******************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: programs/Hadrons/SrcZ2.cc
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Copyright (C) 2016
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Author: Antonin Portelli <antonin.portelli@me.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 <Hadrons/SrcZ2.hpp>
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using namespace Grid;
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using namespace Hadrons;
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/******************************************************************************
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* SrcZ2 implementation *
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******************************************************************************/
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// constructor /////////////////////////////////////////////////////////////////
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SrcZ2::SrcZ2(const std::string name)
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: Module(name)
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{}
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// parse parameters ////////////////////////////////////////////////////////////
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void SrcZ2::parseParameters(XmlReader &reader, const std::string name)
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{
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read(reader, name, par_);
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}
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// dependencies/products ///////////////////////////////////////////////////////
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std::vector<std::string> SrcZ2::getInput(void)
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{
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std::vector<std::string> in;
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return in;
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}
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std::vector<std::string> SrcZ2::getOutput(void)
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{
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std::vector<std::string> out = {getName()};
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return out;
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}
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// setup ///////////////////////////////////////////////////////////////////////
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void SrcZ2::setup(void)
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{
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env().registerLattice<LatticePropagator>(getName());
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}
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// execution ///////////////////////////////////////////////////////////////////
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void SrcZ2::execute(void)
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{
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Lattice<iScalar<vInteger>> t(env().getGrid());
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LatticeComplex eta(env().getGrid());
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LatticeFermion phi(env().getGrid());
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Complex shift(1., 1.);
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if (par_.tA == par_.tB)
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{
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LOG(Message) << "Generating Z_2 wall source at t= " << par_.tA
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<< std::endl;
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}
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else
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{
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LOG(Message) << "Generating Z_2 band for " << par_.tA << " <= t <= "
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<< par_.tB << std::endl;
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}
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LatticePropagator &src = *env().create<LatticePropagator>(getName());
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LatticeCoordinate(t, Tp);
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bernoulli(*env().get4dRng(), eta);
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eta = (2.*eta - shift)*(1./::sqrt(2.));
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eta = where((t >= par_.tA) and (t <= par_.tB), eta, 0.*eta);
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src = 1.;
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src = src*eta;
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}
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