nonlinear.c File Reference

#include "nonlinear.h"

Include dependency graph for nonlinear.c:

Functions
int	nonlinear_init (struct precision *ppr, struct background *pba, struct thermo *pth, struct perturbs *ppt, struct primordial *ppm, struct nonlinear *pnl)
int	nonlinear_halofit (struct precision *ppr, struct background *pba, struct primordial *ppm, struct nonlinear *pnl, double tau, double *pk_l, double *pk_nl, double *lnk_l, double *lnpk_l, double *ddlnpk_l, double *k_nl)

Detailed Description

Documented nonlinear module

Julien Lesgourgues, 6.03.2014

New module replacing an older one present up to version 2.0 The new module is located in a better place in the main, allowing it to compute non-linear correction to 's and not just . It will also be easier to generalize to new methods. The old implementation of one-loop calculations and TRG calculations has been dropped from this version, they can still be found in older versions.

Function Documentation

nonlinear_init()

int nonlinear_init	(	struct precision *	ppr,
		struct background *	pba,
		struct thermo *	pth,
		struct perturbs *	ppt,
		struct primordial *	ppm,
		struct nonlinear *	pnl
	)

Summary

(a) First deal with the case where non non-linear corrections requested

(b) Compute for HALOFIT non-linear spectrum

• copy list of (k,tau) from perturbation module
• loop over time

nonlinear_halofit()

int nonlinear_halofit	(	struct precision *	ppr,
		struct background *	pba,
		struct primordial *	ppm,
		struct nonlinear *	pnl,
		double	tau,
		double *	pk_l,
		double *	pk_nl,
		double *	lnk_l,
		double *	lnpk_l,
		double *	ddlnpk_l,
		double *	k_nl
	)

Determine non linear ratios (from pk)