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Merge branch 'feature/hadrons' into feature/qed-fvol

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# Conflicts:
#	Makefile.am
#	configure.ac
#	lib/qcd/action/gauge/Photon.h
This commit is contained in:
Antonin Portelli
2016-12-15 19:53:00 +00:00
parent b10ae00c8a 67d72000e7
commit bc6678732f
107 changed files with 7689 additions and 3686 deletions
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110
extras/qed-fvol/qed-fvol.cc Normal file
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#include <Global.hpp>
#include <WilsonLoops.h>
using namespace Grid;
using namespace QCD;
using namespace QedFVol;
template <class S>
class QedGimpl
{
public:
typedef S Simd;
template <typename vtype>
using iImplGaugeLink = iScalar<iScalar<iScalar<vtype>>>;
template <typename vtype>
using iImplGaugeField = iVector<iScalar<iScalar<vtype>>, Nd>;
typedef iImplGaugeLink<Simd> SiteGaugeLink;
typedef iImplGaugeField<Simd> SiteGaugeField;
typedef Lattice<SiteGaugeLink> GaugeLinkField; // bit ugly naming; polarised
// gauge field, lorentz... all
// ugly
typedef Lattice<SiteGaugeField> GaugeField;
};
typedef QedGimpl<vComplex> QedGimplR;
typedef PeriodicGaugeImpl<QedGimplR> QedPeriodicGimplR;
typedef Photon<QedGimplR> PhotonR;
typedef PhotonR::GaugeField EmField;
typedef PhotonR::GaugeLinkField EmComp;
const int NCONFIGS = 10;
const int NWILSON = 10;
int main(int argc, char *argv[])
{
// parse command line
std::string parameterFileName;
if (argc < 2)
{
std::cerr << "usage: " << argv[0] << " <parameter file> [Grid options]";
std::cerr << std::endl;
std::exit(EXIT_FAILURE);
}
parameterFileName = argv[1];
// initialization
Grid_init(&argc, &argv);
QedFVolLogError.Active(GridLogError.isActive());
QedFVolLogWarning.Active(GridLogWarning.isActive());
QedFVolLogMessage.Active(GridLogMessage.isActive());
QedFVolLogIterative.Active(GridLogIterative.isActive());
QedFVolLogDebug.Active(GridLogDebug.isActive());
LOG(Message) << "Grid initialized" << std::endl;
// QED stuff
std::vector<int> latt_size = GridDefaultLatt();
std::vector<int> simd_layout = GridDefaultSimd(4, vComplex::Nsimd());
std::vector<int> mpi_layout = GridDefaultMpi();
GridCartesian grid(latt_size,simd_layout,mpi_layout);
GridParallelRNG pRNG(&grid);
PhotonR photon(PhotonR::Gauge::Feynman,
PhotonR::ZmScheme::QedL);
EmField a(&grid);
EmField expA(&grid);
Complex imag_unit(0, 1);
Real wlA;
std::vector<Real> logWlAvg(NWILSON, 0.0), logWlTime(NWILSON, 0.0), logWlSpace(NWILSON, 0.0);
pRNG.SeedRandomDevice();
LOG(Message) << "Wilson loop calculation beginning" << std::endl;
for(int ic = 0; ic < NCONFIGS; ic++){
LOG(Message) << "Configuration " << ic <<std::endl;
photon.StochasticField(a, pRNG);
// Exponentiate photon field
expA = exp(imag_unit*a);
// Calculate Wilson loops
for(int iw=1; iw<=NWILSON; iw++){
wlA = NewWilsonLoops<QedPeriodicGimplR>::avgWilsonLoop(expA, iw, iw) * 3;
logWlAvg[iw-1] -= 2*log(wlA);
wlA = NewWilsonLoops<QedPeriodicGimplR>::avgTimelikeWilsonLoop(expA, iw, iw) * 3;
logWlTime[iw-1] -= 2*log(wlA);
wlA = NewWilsonLoops<QedPeriodicGimplR>::avgSpatialWilsonLoop(expA, iw, iw) * 3;
logWlSpace[iw-1] -= 2*log(wlA);
}
}
LOG(Message) << "Wilson loop calculation completed" << std::endl;
// Calculate Wilson loops
for(int iw=1; iw<=10; iw++){
LOG(Message) << iw << 'x' << iw << " Wilson loop" << std::endl;
LOG(Message) << "-2log(W) average: " << logWlAvg[iw-1]/NCONFIGS << std::endl;
LOG(Message) << "-2log(W) timelike: " << logWlTime[iw-1]/NCONFIGS << std::endl;
LOG(Message) << "-2log(W) spatial: " << logWlSpace[iw-1]/NCONFIGS << std::endl;
}
// epilogue
LOG(Message) << "Grid is finalizing now" << std::endl;
Grid_finalize();
return EXIT_SUCCESS;
}