triqs_ctseg::solve_params_t

#include <triqs_ctseg/params.hpp>

Detailed Description

Parameters passed to the solve() method of the solver class.

Definition at line 34 of file params.hpp.

Inheritance diagram for triqs_ctseg::solve_params_t:

Public Attributes
int	det_init_size = 100
	The maximum size of the determinant matrix before a resize.
int	det_n_operations_before_check = 100
	Max number of ops before testing the accuracy of \( \det(M) \) and \( M^{-1} \).
double	det_precision_error = 1.e-5
	Threshold for determinant precision error.
double	det_precision_warning = 1.e-8
	Threshold for determinant precision warnings.
double	det_singular_threshold = -1
	Bound for the determinant matrix being singular (if \( < 0 \), checks for subnormal numbers).
double	dlr_epsilon = 1e-8
	DLR precision.
double	dlr_omega_max = 100
	DLR frequency cutoff.
triqs::operators::many_body_operator	h_int
	Quartic part of the local Hamiltonian.
triqs::operators::many_body_operator	h_loc0
	Quandratic part of the local Hamiltonian (including chemical potential).
int	histogram_max_order = 1000
	Maximum order for the perturbation order histograms.
double	imag_threshold = 1.e-13
int	length_cycle = 50
	Length of a single QMC cycle.
int	max_time = -1
	Maximum runtime in seconds, use -1 to set infinite.
bool	measure_average_sign = true
	Whether to measure the average sign.
bool	measure_densities = true
	Whether to measure densities.
bool	measure_F_tau = false
	Whether to measure \( F(\tau) \).
bool	measure_g2w = false
	Whether to measure three-point correlation function.
bool	measure_g3w = false
	Whether to measure four-point correlation function.
bool	measure_G_tau = true
	Whether to measure \( G(\tau) \).
bool	measure_nn_nu_dlr = false
	Whether to measure \( \langle n(\nu)n(0) \rangle \).
bool	measure_nn_static = false
	Whether to measure \( \langle n(0) n(0) \rangle \).
bool	measure_nn_tau = false
	Whether to measure \( \langle n(\tau) n(0) \rangle \).
bool	measure_pert_order = true
	Whether to measure the perturbation order histograms (order in Delta and Jperp).
bool	measure_Sperp_tau = false
	Whether to measure \( \langle S_x(\tau) S_x(0) \rangle \).
bool	measure_state_hist = false
	Whether to measure state histograms.
bool	move_double_insert_segment = true
	Whether to perform the move double insert segment.
bool	move_double_remove_segment = true
	Whether to perform the move double remove segment.
bool	move_insert_segment = true
	Whether to perform the move insert segment.
bool	move_insert_spin_segment = true
	Whether to perform the move insert spin segment.
bool	move_move_segment = true
	Whether to perform the move move segment.
bool	move_regroup_segment = true
	Whether to perform the move group into spin segment.
bool	move_regroup_spin_segment = true
	Whether to perform the move remove spin segment.
bool	move_remove_segment = true
	Whether to perform the move remove segment.
bool	move_remove_spin_segment = true
	Whether to perform the move remove spin segment.
bool	move_split_segment = true
	Whether to perform the move split segment.
bool	move_split_spin_segment = true
	Whether to perform the move insert spin segment.
bool	move_swap_spin_lines = true
	Whether to perform the move swap spin lines.
int	n_cycles
	Number of QMC cycles.
int	n_tau_chi2 = 0
	Number of points on which to measure 2-point functions (defaults to n_tau_bosonic.).
int	n_tau_G = 0
	Number of points on which to measure \( G(\tau) \) / \( F(\tau) \) (defaults to n_tau).
int	n_w_b_vertex = 10
	Number of bosonic M-frequency points on which to measure vertex functions.
int	n_w_f_vertex = 10
	Number of fermionic M-frequency points on which to measure vertex functions.
int	n_warmup_cycles = 5000
	Number of cycles for thermalization.
std::string	random_name = ""
	Name of random number generator.
int	random_seed = 34788 + 928374 * mpi::communicator().rank()
	Seed for random number generator.
int	verbosity = mpi::communicator().rank() == 0 ? 3 : 0
	Verbosity level.
bool	visualize_config = false
	Output characteristic configurations in a separate file.

Member Data Documentation

imag_threshold

double triqs_ctseg::solve_params_t::imag_threshold = 1.e-13

Threshold below which the imaginary part of the local Hamiltonian h_loc0 is set to zero (CT-SEG uses a real h_loc0); above it the solver errors. Raise to accept a larger imaginary part.

Definition at line 162 of file params.hpp.

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The documentation for this struct was generated from the following file:

• triqs_ctseg/params.hpp