triqs::atom_diag::atom_diag¶
#include <triqs/atom_diag/atom_diag.hpp>
template<bool Complex> class atom_diag
Lightweight exact diagonalization solver This class is provided as a simple tool to diagonalize Hamiltonians of finite fermionic systems of a moderate size.
Template parameters¶
- Complex: Allow the Hamiltonian to be complex.
Member types¶
| scalar_t | std::conditional_t<Complex, std::complex<double>, double> | Type of matrix elements (double/dcomplex) |
| matrix_t | matrix<atom_diag::scalar_t> | Matrix type |
| block_matrix_t | std::vector<matrix_t> | Block-diagonal matrix type |
| full_hilbert_space_state_t | vector<atom_diag::scalar_t> | State vector in the full Hilbert space, written in the eigenbasis of \(\hat H\). |
| many_body_op_t | triqs::operators::many_body_operator_generic<scalar_t> | Many-body operator type used by this atom_diag specialization. |