Modification of Growth with CAMB
MGCAMB is a variant of CAMB to calculate observables of CMB, WL, galaxy counts and their cross-correlations when gravity gets modified.
Download the Fortran 90 source code here. This version June, 2009
Usage:
The compilation/running procedure, and the format of the output are the same of CAMB sources, but note that MGCAMB needs more memory (1.5GB+) . If you want to specify the model, edit the subroutines fderivs and output in equations.f90, and re-compile.
Features:
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-CMB, WL, counts auto- and cross-correlation spectra for general effective Newton constant and the ratio of gravitational potentials
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-Bugs in Limber approximation part of CAMB sources fixed, see details on cosmocoffee.
Tests:
Version history
June 2009
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An I/O bug fixed (thanks to Matteo Viel)
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A bug related to non-linear matter power spectrum fixed (thanks to Francesco De Bernardis) . Note that this HaloFit based correction may not be accurate in modified gravity. See arXiv:0902.0618 for more realistic implementation.
Sep 2008
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First version released
If you use the MGCAMB code, please cite the following paper and the CAMB sources.
Searching for modified growth patterns with tomographic surveys.
GZ, Levon Pogosian, Alessandra Silvestri and Joel Zylberberg
By GZ, L. Pogosian, A. Silvestri and J. Zylberberg