Method

NumCosmoHICosmoVexptau_xc

Declaration [src]

gdouble
nc_hicosmo_Vexp_tau_xc (
  NcHICosmoVexp* Vexp,
  const gdouble xc
)

Description [src]

Computes the time variable $\tau$ corresponding to the given contraction phase scale factor ratio $x_c = a / a_{0c}$, where $a = a_b \exp(\tau^2/2)$.

Parameters

xc

Type: const gdouble

$x_c$.

Return value

Type: gdouble

$\tau$.