sarkas.tools.observables.grad_expansion

sarkas.tools.observables.grad_expansion(x, rms, h_coeff)

Calculate the Grad expansion as given by eq.(5.97) in Liboff

Parameters

• x (numpy.ndarray) – Array of the scaled velocities

• rms (float) – RMS width of the Gaussian.

• h_coeff (numpy.ndarray) – Hermite coefficients without the division by factorial.

Returns

_ (numpy.ndarray) – Grad expansion.