72 citations · 111 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2009★ 72 cited
Slow-roll k-essence
Takeshi Chiba, Sourish Dutta, Robert J. Scherrer
We derive slow-roll conditions for thawing k-essence with a separable Lagrangian . We examine the evolution of the equation of state parameter, , as a function…
gr-qc2009
Island Cosmology
Sourish Dutta, Tanmay Vachaspati
If the observed dark energy is a cosmological constant, the canonical state of the universe is de Sitter spacetime. In such a spacetime, quantum fluctuations that violate the null…
astro-ph.CO2009★ 39 cited
New Parametrization for the Scale Dependent Growth Function in General Relativity
James B. Dent, Sourish Dutta, Leandros Perivolaropoulos
We demonstrate the scale dependence of the growth function of cosmological perturbations in dark energy models based on General Relativity. This scale dependence is more prominent…