ABACUS/include/ABACUS_State_Ensemble.h

/**********************************************************

This software is part of J.-S. Caux's ABACUS library.

Copyright (c) J.-S. Caux.

-----------------------------------------------------------

File:  ABACUS_State_Ensemble.h

Purpose:  Define state ensembles.

***********************************************************/

#ifndef ABACUS_STATE_ENSEMBLE_H
#define ABACUS_STATE_ENSEMBLE_H

#include "ABACUS.h"

namespace ABACUS {


  struct LiebLin_Diagonal_State_Ensemble {

    int nstates;
    Vect<LiebLin_Bethe_State> state;
    Vect<DP> weight;

    LiebLin_Diagonal_State_Ensemble ();
    LiebLin_Diagonal_State_Ensemble (const LiebLin_Bethe_State& RefState, int nstates_req);
    LiebLin_Diagonal_State_Ensemble (DP c_int, DP L, int N, const Root_Density& rho);

    LiebLin_Diagonal_State_Ensemble& operator= (const LiebLin_Diagonal_State_Ensemble& rhs);
    void Load (DP c_int, DP L, int N, const char* ensfile_Cstr);
    void Save (const char* ensfile_Cstr);
  };

  LiebLin_Diagonal_State_Ensemble LiebLin_Thermal_Saddle_Point_Ensemble (DP c_int, DP L, int N, DP kBT);


} // namespace ABACUS

#endif