100 citations · 498 across the 24 of their papers we have counts for
4 papers · 1 filter
Inhomogeneous and interacting vacuum energy
Josue De-Santiago, David Wands, Yuting Wang
Vacuum energy is a simple model for dark energy driving an accelerated expansion of the universe. If the vacuum energy is inhomogeneous in spacetime then it must be interacting. We…
On the dynamics of unified k-essence cosmologies
Josue De-Santiago, Jorge L. Cervantes-Cota
We analyze the phase space of a particular unified model of dark matter, dark energy, and inflation that we recently studied in [Phys. Rev. D 83, 063502 (2011)] whose Lagrangian is…
Inhomogeneous vacuum energy
David Wands, Josue De-Santiago, Yuting Wang
Vacuum energy remains the simplest model of dark energy which could drive the accelerated expansion of the Universe without necessarily introducing any new degrees of freedom. Inho…
Cosmological phase space analysis of the F (X) - V (phi) scalar field and bouncing solutions
Josue De-Santiago, Jorge L. Cervantes-Cota, David Wands
We analyze the dynamical system defined by a universe filled with a barotropic fluid plus a scalar field with modified kinetic term of the form L = F (X) - V (phi). After a suitabl…