Method

NumCosmoHICosmoVexptau_xe

Declaration [src]

gdouble
nc_hicosmo_Vexp_tau_xe (
  NcHICosmoVexp* Vexp,
  const gdouble xe
)

Description [src]

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

Parameters

xe

Type: const gdouble

$x_e$.

Return value

Type: gdouble

$\tau$.