hamiltonians.hpp

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// Copyright (c) 2025--present, The Simons Foundation
// This file is part of TRIQS/modest and is licensed under the terms of GPLv3 or later.
// SPDX-License-Identifier: GPL-3.0-or-later
// See LICENSE in the root of this distribution for details.
 
#pragma once
#include <triqs/gfs.hpp>
#include <triqs/operators.hpp>
#include <triqs/operators/many_body_operator.hpp>
 
using namespace triqs::gfs;
 
namespace triqs {
 
 
  operators::many_body_operator make_density_density(std::vector<std::string> const &tau_names, std::vector<long> const &dim_gamma, double U_int,
                                                     double U_prime, double J_hund);
 
  operators::many_body_operator make_kanamori(std::vector<std::string> const &tau_names, std::vector<long> const &dim_gamma, double U_int,
                                              double U_prime, double J_hund, bool spin_flip = true, bool pair_hopping = true);
  operators::many_body_operator make_slater(std::vector<std::string> const &tau_names, std::vector<long> const &dim_gamma, double U_int,
                                            double J_hund, nda::matrix<dcomplex> const &spherical_to_dft,
                                            std::optional<nda::matrix<dcomplex>> const &dft_to_local);
 
 
  nda::array<double, 4> U_matrix_in_spherical_basis(long l, double U_int, double J_hund);
 
  nda::array<dcomplex, 4> U_matrix_in_local_basis(long l, nda::matrix<dcomplex> s2l, double U_int, double J_hund);
 
} // namespace triqs