grogupy._core.second_order_energy

grogupy._core.second_order_energy(Vu1: ndarray[Any, dtype[_ScalarType_co]], Vu2: ndarray[Any, dtype[_ScalarType_co]], Gii: ndarray[Any, dtype[_ScalarType_co]], weights: ndarray[Any, dtype[_ScalarType_co]]) → float

The second order energy variation upon rotations.

Parameters

Vu1NDArray

First order perturbation of a rotation

Vu2NDArray

Second order perturbation of a rotation

GiiNDArray

Green’s function slice

weightsNDArray

The weights from the energy contour integral

Returns

float

The second order energy variation