spinguin.core.liouvillian

This module provides a function for calculating the Liouvillian.

sop_L(H: ndarray | csc_array = None, R: ndarray | csc_array = None, K: ndarray | csc_array = None) → ndarray | csc_array

Constructs the Liouvillian superoperator from the Hamiltonian, relaxation superoperator, and exchange superoperator.

Parameters:

• H (ndarray or csc_array) – Hamiltonian superoperator.

• R (ndarray or csc_array) – Relaxation superoperator

• K (ndarray or csc_array) – Exchange superoperator.

Returns:

L – Liouvillian superoperator.

Return type:

ndarray or csc_array