action_G_Plaq.h

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#ifndef ACTION_G_PLAQ_INCLUDED
#define ACTION_G_PLAQ_INCLUDED

#include "Action/action.h"
#include "Force/Gauge/force_G_Plaq.h"

#include "IO/bridgeIO.h"
using Bridge::vout;


class Action_G_Plaq : public Action
{
 public:
  static const std::string class_name;

 private:
  double      m_beta;
  std::string m_label;

  Field_G    *m_U;
  Staple_lex m_staple;
  Force_G    *m_force_G;

 public:
  Action_G_Plaq()
    : Action()
  {
    m_force_G = Force_G::New("Force_G_Plaq");
  }

  ~Action_G_Plaq()
  {
    delete m_force_G;
  }

  void set_parameters(const Parameters& params);
  void set_parameters(double beta);

  void set_label(std::string label)
  {
    m_label = label;
    vout.detailed(m_vl, "  label: %s\n", m_label.c_str());
  }

  std::string get_label()
  {
    return m_label;
  }

  void set_config(Field *U)
  {
    m_U = (Field_G *)U;
  }

  double langevin(RandomNumbers *);

  double calcH();

  void force(Field&);
};
#endif