150 citations · 511 across the 11 of their papers we have counts for
5 papers · 1 filter
Non-minimally coupled vector curvaton
Konstantinos Dimopoulos, Mindaugas Karciauskas
It is shown that a massive Abelian vector boson field can generate the curvature perturbation in the Universe, when coupled non-minimally to gravity, through an RA^2 coupling. The…
Density Perturbations in the Universe from Massive Vector Fields
Konstantinos Dimopoulos
I discuss the possibility of using a massive vector field to generate the density perturbation in the Universe. I find that a scale-invariant superhorizon spectrum of vector field…
Trapped Quintessential Inflation in the context of Flux Compactifications
J. C. Bueno Sanchez, K. Dimopoulos
We present a model for quintessential inflation using a string modulus for the inflaton - quintessence field. The scalar potential of our model is based on generic non-perturbative…
Trapped Quintessential Inflation
J. C. Bueno Sanchez, K. Dimopoulos
Quintessential inflation is studied using a string modulus as the inflaton - quintessence field. The modulus begins its evolution at the steep part of its scalar potential, which i…
Inflation at the TeV scale with a PNGB curvaton
Konstantinos Dimopoulos
We investigate a particular type of curvaton mechanism, under which inflation can occur at Hubble scale of order 1 TeV. The curvaton is a pseudo Nambu-Goldstone boson, whose order…