Quintessence module
Posted: February 25 2014
I have two questions about Quintessence module in CAMB.
1) What is the sence of constant "norm" which equals 1d-122 in function Vofphi(phi,deriv) in the code?
2) Why in this "sigma model" Vofphi= norm*exp(-sqrt(3/2)*phi), although according to correct conformal transformation Vofphi \sim exp(-sqrt(2/3)*phi)? I studied paper "f(R) gravity" Antonio De Felice and Shinji Tsujikawa.
1) What is the sence of constant "norm" which equals 1d-122 in function Vofphi(phi,deriv) in the code?
2) Why in this "sigma model" Vofphi= norm*exp(-sqrt(3/2)*phi), although according to correct conformal transformation Vofphi \sim exp(-sqrt(2/3)*phi)? I studied paper "f(R) gravity" Antonio De Felice and Shinji Tsujikawa.