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params_MG.ini
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# **********************************************************
# __ _________ ________ __ ______
# / \/ / ____/ / ___/ _ | / |/ / _ )
# / /\_/ / /_,-, / /__/ __ |/ /|_/ / _ |
# /_/ /_/_____/ \___/_/ |_/_/ /_/____/
#
# Modified Growth with CAMB
#
# **********************************************************
###### Part 1. Choose the Modified Growth flag
# MG_flag = 0 : default GR
# MG_flag = 1 : pure MG models
# MG_flag = 2 : alternative MG models
# MG_flag = 3 : QSA models
MG_flag = 1
# Choose at which time to turn on MG
GRtrans = 0.001d0
###### Part 2.1 - Pure MG models
# pure_MG_flag = 1 : mu, gamma parametrization
# pure_MG_flag = 2 : mu, sigma parametrization
# pure_MG_flag = 3 : Q, R parametrization
pure_MG_flag = 1
###### Part 2.2 - Alternative MG models
# alt_MG_flag = 1 : Linder Gamma parametrization ( introduced in arXiv:0507263 )
alt_MG_flag = 1
###### Part 2.3 - QSA models
# QSA_flag = 1 : f(R)
# QSA_flag = 2 : Symmetron
# QSA_flag = 3 : Dilaton
# QSA_flag = 4 : Hu-Sawicki f(R)
QSA_flag = 4
###### Part 3.1.1. - mu, gamma functions
# mugamma_par = 1 : BZ parametrization ( introduced in arXiv:0809.3791 )
# mugamma_par = 2 : Planck parametrization
# mugamma_par = 3 : Effective Newton's constant
mugamma_par = 1
#BZ parameters:
B1 = 1.333
lambda1_2 = 1000
B2 = 0.5
lambda2_2 = 1000
ss = 4
#Planck parameters
E11 = 1
E22 = 1
# Effective Newtons constant
ga = 0.5
nn = 2
###### Part 3.1.2. - mu, Sigma functions
# musigma_par = 1 : DES parametrization
musigma_par = 1
mu0 = -1
sigma0 = 0
###### Part 3.1.3. - Q,R functions
# QR_par = 1 : (Q,R) ( introduced in arXiv:1002.4197 )
# QR_par = 2 : (Q0,R0,s) ( introduced in arXiv:1002.4197 )
QR_par = 1
#Bean parameters :
#(Q,R)
MGQfix=1
MGRfix=1
#(Q0,R0,s)
Qnot=1.
Rnot=1.
sss=0
##### Part 3.2.1 - Linder Gamma
# Linder's gamma :
Linder_gamma = 0.545
##### Part 3.3.1 - QSA f(R) model
B0 = 1.d-3
##### Part 3.3.2 - QSA Symmetron model
beta_star = 1.0d0
a_star = 0.5d0
xi_star = 0.001d0
##### Part 3.3.3 - QSA Dilaton model
beta0 = 1.d0
xi0 = 0.0001
DilS = 0.24d0
DilR = 1.d0
A2 = 1e3
##### Part 3.3.4 - QSA Hu-Sawicki f(R)
F_R0 = 0.0001d0
FRn = 1.d0
##### Part 4. Parameters for the DE model
# Note that the modification of the background works only for pure MG models.
#
# DE_model = 0 : LCDM
# DE_model = 1 : wCDM
# DE_model = 2 : (w0,wa)CDM
# DE_model = 3 : user defined
DE_model = 0
# DE model 1 (choose w0DE) 2 (choose both)
w0DE = -1.d0
waDE = 0.d0