15 research outputs found
Galileons, phantom fields, and the fate of the Universe
In this paper we study cosmological dynamics of phantom as well as
non-phantom fields with linear potential in presence of Galileon correction
. We show that the Big Crunch
singularity is delayed compared to the standard case; the delay crucially
depends upon the strength of Galileon correction. As for the phantom Galileon,
is shown to grow more slowly compared to the standard phantom
delaying the approach to singularity. In case, , Big Rip is
also delayed, similar phenomenon is shown to take place for potentials steeper
than the exponential.Comment: 10 pages, 3 figures, Accepted for publication in Eur. Phys. J.