functions.hpp

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// Copyright (c) 2017-2018 Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
// Copyright (c) 2017-2018 Centre national de la recherche scientifique (CNRS)
// Copyright (c) 2018-2020 Simons Foundation
// Copyright (c) 2017 Igor Krivenko
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You may obtain a copy of the License at
//     https://www.gnu.org/licenses/gpl-3.0.txt
//
// Authors: Michel Ferrero, Igor Krivenko, Nils Wentzell

 
#pragma once
 
#include "./atom_diag.hpp"
 
#include <vector>
 
namespace triqs::atom_diag {
 
  using namespace triqs::gfs;


  template <bool Complex> double partition_function(atom_diag<Complex> const &atom, double beta);

  template <bool Complex> typename atom_diag<Complex>::block_matrix_t atomic_density_matrix(atom_diag<Complex> const &atom, double beta);

  template <bool Complex>
  typename atom_diag<Complex>::scalar_t trace_rho_op(typename atom_diag<Complex>::block_matrix_t const &density_matrix,
                                                     typename atom_diag<Complex>::many_body_op_t const &op, atom_diag<Complex> const &atom);

  template <bool Complex>
  typename atom_diag<Complex>::full_hilbert_space_state_t act(typename atom_diag<Complex>::many_body_op_t const &op,
                                                              typename atom_diag<Complex>::full_hilbert_space_state_t const &st,
                                                              atom_diag<Complex> const &atom);

  template <bool Complex>
  std::vector<std::vector<quantum_number_t>> quantum_number_eigenvalues(typename atom_diag<Complex>::many_body_op_t const &op,
                                                                        atom_diag<Complex> const &atom);

  template <bool Complex>
  std::vector<std::vector<quantum_number_t>> quantum_number_eigenvalues_checked(typename atom_diag<Complex>::many_body_op_t const &op,
                                                                                atom_diag<Complex> const &atom);

 
} // namespace triqs::atom_diag