matryoshka.eft_funcs

Module containing functions for combining the predictions from the EFTEMU component emulators to calculate the galaxy power spectrum.

matryoshka.eft_funcs.multipole(P_n, b, f, stochastic=None, kbins=None, ng=None, multipole=None)

Calculates the galaxy power spectrum multipole given a P_n matrix that corresponds to the desired multipole.

Parameters

  • P_n (list) – List of arrays [P11, Ploop, Pct]. The arrays should have shape (3, nk), (12, nk), and (6, nk) respectively.

  • b (array) – Array of bias parameters and counter terms.

  • f (float) – Growth rate at the same redshift as P_n.

Returns

The galaxy multipole.

matryoshka.eft_funcs.multipole_vec(P_n, b, f, stochastic=None, kbins=None, ng=None, multipole=None)

Vectorized version of multipole that allows for multipoles to be calculated for multiple cosmologies.

Parameters

  • P_n (list) – List of arrays [P11, Ploop, Pct]. The arrays should have shape (nd, 3, nk), (nd, 12, nk), and (nd, 6, nk) respectively.

  • b (array) – Array of bias parameters and counter terms. Should have shape (nd, 7).

  • f (float) – Growth rate at the same redshift as P_n. Should have shape (nd, 1).

  • stochastic (array) – Input stochastic counterterms. Should have shape (n, 3). Default is None, in which case no stochastic terms are used.

  • kbins (array) – k-bins associated to P_n. Only required if stochastic is not None. Default is None

  • ng (float) – Mean galaxy number density. Only required if stochastic is not None. Default is None.

  • multipole (int) – Desired multipole. Can either be 0 or 1. Default is None. Only is required if stochastic is not None.

Returns

The galaxy multipoles.