action_G_Plaq_SF.cpp

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#include "action_G_Plaq_SF.h"


#ifdef USE_FACTORY
namespace {
  Action *create_object()
  {
    return new Action_G_Plaq_SF();
  }


  bool init = Action::Factory::Register("Action_G_Plaq_SF", create_object);
}
#endif


//- parameter entries
namespace {
  void append_entry(Parameters& param)
  {
    param.Register_double("beta", 0.0);

    param.Register_double("ct0", 0.0);
    param.Register_double("ct1", 0.0);
    param.Register_double("ct2", 0.0);

    param.Register_double_vector("phi", std::vector<double>());
    param.Register_double_vector("phipr", std::vector<double>());

    param.Register_string("verbose_level", "NULL");
  }


#ifdef USE_PARAMETERS_FACTORY
  bool init_param = ParametersFactory::Register("Action.G_Plaq_SF", append_entry);
#endif
}
//- end

//- parameters class
Parameters_Action_G_Plaq_SF::Parameters_Action_G_Plaq_SF() { append_entry(*this); }
//- end

const std::string Action_G_Plaq_SF::class_name = "Action_G_Plaq_SF";

//====================================================================
void Action_G_Plaq_SF::set_parameters(const Parameters& params)
{
  const string str_vlevel = params.get_string("verbose_level");

  m_vl = vout.set_verbose_level(str_vlevel);

  //- fetch and check input parameters
  double              beta, ct0, ct1, ct2;
  std::vector<double> phi, phipr;

  int err = 0;
  err += params.fetch_double("beta", beta);
  err += params.fetch_double("ct0", ct0);
  err += params.fetch_double("ct1", ct1);
  err += params.fetch_double("ct2", ct2);
  err += params.fetch_double_vector("phi", phi);
  err += params.fetch_double_vector("phipr", phipr);

  if (err) {
    vout.crucial(m_vl, "%s: fetch error, input parameter not found.\n", class_name.c_str());
    exit(EXIT_FAILURE);
  }


  double gg = 6.0 / beta;
  double ct = ct0 + ct1 * gg + ct2 * gg * gg;

  set_parameters(beta, &phi[0], &phipr[0], ct);
}


//====================================================================

void Action_G_Plaq_SF::set_parameters(double beta, double *phi, double *phipr, double ct)
{
  //- print input parameters
  vout.general(m_vl, "%s:\n", class_name.c_str());
  vout.general(m_vl, "  beta  = %12.6f\n", beta);
  vout.general(m_vl, "  phi1  = %12.6f\n", phi[0]);
  vout.general(m_vl, "  phi2  = %12.6f\n", phi[1]);
  vout.general(m_vl, "  phi3  = %12.6f\n", phi[2]);
  vout.general(m_vl, "  phipr1= %12.6f\n", phipr[0]);
  vout.general(m_vl, "  phipr2= %12.6f\n", phipr[1]);
  vout.general(m_vl, "  phipr3= %12.6f\n", phipr[2]);
  vout.general(m_vl, "  ct    = %12.6f\n", ct);

  //- range check
  // NB. beta,phi,phipr,ct = 0 is allowed.

  //- store values
  m_beta = beta;

  m_ct = ct;

  m_phi   = phi;
  m_phipr = phipr;

  //- post-process
  m_staple.set_parameters(m_phi, m_phipr);

  int Nc   = CommonParameters::Nc();
  int Nvol = CommonParameters::Nvol();
  int Ndim = CommonParameters::Ndim();
  int NinG = 2 * Nc * Nc;
}


//====================================================================
double Action_G_Plaq_SF::langevin(RandomNumbers *rand)
{
  double H_U = calcH();

  return H_U;
}


//====================================================================

double Action_G_Plaq_SF::calcH()
{
  int Nc = CommonParameters::Nc();

  double plaq = m_staple.plaquette_ct(*m_U, m_ct);

  double H_U = -1.0 / Nc * m_beta * plaq;

  vout.general(m_vl, "H_Gplaq    = %18.8f\n", H_U);

  return H_U;
}


//====================================================================

void Action_G_Plaq_SF::force(Field& force)
{
  int Nin  = m_U->nin();
  int Nvol = m_U->nvol();
  int Nex  = m_U->nex();
  int Nc   = CommonParameters::Nc();

  assert(force.nin() == Nin);
  assert(force.nvol() == Nvol);
  assert(force.nex() == Nex);

  force.set(0.0);

  double   betaNc = m_beta / Nc;
  Mat_SU_N ut(Nc);

  Field_G st(Nvol, 1), force1(Nvol, 1);

  vout.general(m_vl, "  %s: %s\n", class_name.c_str(), m_label.c_str());

  for (int mu = 0; mu < Nex; ++mu) {
    m_staple.staple_ct(st, *m_U, mu, m_ct);
    for (int site = 0; site < Nvol; ++site) {
      ut = m_U->mat(site, mu) * st.mat_dag(site);
      ut.at();
      force1.set_mat(site, 0, ut);
    }
    axpy(force, mu, -betaNc, force1, 0);
  }

  double Fave, Fmax, Fdev;
  force.stat(Fave, Fmax, Fdev);
  vout.general(m_vl, "    Fave = %12.6f  Fmax = %10.6f  Fdev = %12.6f\n",
               Fave, Fmax, Fdev);
}


//====================================================================


//====================================================================
void Action_G_Plaq_SF::print_force(const Field_G *U)
{
  int Nc = CommonParameters::Nc();
  int Nx = CommonParameters::Nx();
  int Ny = CommonParameters::Ny();
  int Nz = CommonParameters::Nz();
  int Nt = CommonParameters::Nt();

  Index_lex idx;
  int       ix;
  Mat_SU_N  Tmp(Nc);

  //  if(comm->ipe(3)==0){
  for (int t = 0; t < Nt; t++) {
    for (int x = 0; x < Nx; x++) {
      for (int y = 0; y < Ny; y++) {
        for (int z = 0; z < Nz; z++) {
          ix = idx.site(x, y, z, t);

          for (int mu = 0; mu < 4; mu++) {
            Tmp = U->mat(ix, mu);
            for (int c = 0; c < Nc * Nc; ++c) {
              vout.general(m_vl, "%d %d %d %d %d %d %0.16e %0.16e\n",
                           x, y, z, t, mu, c, Tmp.r(c), Tmp.i(c));
            }
          }
        }
      }
    }
  }
}


//====================================================================
//============================================================END=====