nrgljubljana_interface.solver_core.SolverCore

class nrgljubljana_interface.solver_core.SolverCore

Bases: object

TRIQS interface to the NRGLjubljana numerical renormalization group impurity solver.

Given a hybridization function, drives the external NRGLjubljana solver to compute spectral functions, Green’s functions, the self-energy, susceptibilities and thermodynamic/expectation values for quantum impurity models.

Dispatched C++ constructor(s).

[1] (cp: ConstrParamsT)

Construct an NRGLjubljana_interface solver.

Parameters:

cpConstrParamsT: Construction parameters.

Attributes

`A_w`	The spectral function \(A(\omega)\).
`B_l_w`	The spectral function \(B_l(\omega)\) of the auxiliary correlator \(F_l(\omega)\).
`B_r_w`	The spectral function \(B_r(\omega)\) of the auxiliary correlator \(F_r(\omega)\).
`C_w`	The spectral function \(C(\omega)\) of the auxiliary correlator \(I(\omega)\).
`Delta_struct`	The hybridization function structure object.
`Delta_w`	The hybridization function on the real-frequency axis.
`F_l_w`	The auxiliary Green's function \(F_l(\omega) = \Sigma(\omega)\, G(\omega)\).
`F_r_w`	The auxiliary Green's function \(F_r(\omega) = G(\omega)\, \Sigma(\omega)\).
`G_w`	The retarded Green's function \(G(\omega)\).
`I_w`	The auxiliary Green's function \(I(\omega)\).
`SigmaHartree_w`	Constant Hartree shift to the self-energy, stored as a Green's function.
`Sigma_w`	The retarded self-energy \(\Sigma(\omega)\) (computed from \(F_l\), \(F_r\), \(G\) and \(I\)).
`chi_NN_w`	Charge susceptibility \(\chi_{NN}(\omega)\).
`chi_SS_w`	Spin susceptibility \(\chi_{SS}(\omega)\).
`chi_struct`	The susceptibility structure object.
`constr_params`	Parameters used for the solver construction.
`expv`	Expectation values of local impurity operators.
`gf_struct`	The Green's function structure object.
`keep_temp_dir`	Keep the temporary directories after the calculation.
`last_solve_params`	Parameters used for the most recent solve process.
`log_mesh`	Logarithmic real-frequency mesh.
`nrg_params`	Low-level NRG parameters.
`tdfdm`	Thermodynamic variables (FDM algorithm).
`verbose`	If true, detailed output from NRGLjubljana and its tools is sent to stdout.

Methods

`be_quiet`	Suppress verbose output from the NRG solver.
`check_model_params`	Check that all required model parameters have been defined.
`create_tempdir`	Create a temporary working directory for a series of NRG runs.
`generate_param_file`	Produce the param file for a given value of the twist parameter \(z\).
`instantiate`	Prepare the input files for an individual NRG calculation.
`read_structure`	Read the block structure of Green's function objects from a file.
`readexpv`	Read expectation values from the NRG output files.
`readtdfdm`	Read thermodynamic variables (FDM algorithm) from the NRG output files.
`set_nrg_params`	Adjust the advanced (low-level) NRG parameters.
`set_params`	Establish good defaults for the low-level NRG parameters.
`set_verbosity`	Set the verbosity (see also `be_quiet()`).
`solve`	Solve the impurity problem.
`solve_one`	Perform an individual NRG calculation.
`write_gamma`	Write \(\Gamma = -\mathrm{Im}\,\Delta(\omega)\) to a file.