grogupy.physics.spin_tracer

grogupy.physics.spin_tracer(M: ndarray[Any, dtype[_ScalarType_co]]) → dict[source]

Extracts orbital dependent Pauli traces.

This takes an operator with the orbital-spin sequence: orbital 1 up, orbital 1 down, orbital 2 up, orbital 2 down, that is in the SPIN-BOX representation, and extracts orbital dependent Pauli traces.

Parameters

M: NDArray
Traceable matrix in SPIN BOX represenation

Returns

dict
It contains the traced matrix with “x”, “y”, “z” and “c”, where “c” is the constant part