kspace.PowerLaw

class kspace.PowerLaw(alpha, k0, ndim=3)

Bases: PowerSpectrum

Power-law power spectrum.

Parameters:

• alpha (float) – Power-law index.

• k0 (float) – Normalization scale (wavenumber at which the power spectrum is normalized).

• ndim (int, optional) – Number of dimensions (1, 2, or 3). Default is 3.

__init__(alpha, k0, ndim=3)

Methods

A(k)	The Fourier amplitude corresponding to the power spectrum at a given wavenumber k, A(k) = sqrt(E(k) * k).
E(k)	The "energy spectrum" of the power spectrum as a function of the wavenumber k.
__init__(alpha, k0[, ndim])
integrate_E(kmin, kmax)	Integrate the energy spectrum E(k) over a range of wavenumbers.
renormalize(f_rms[, kmin, kmax])	Rescale the power spectrum's normalization so that the integral of its energy spectrum over [kmin, kmax] gives the desired RMS field value.