Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Non-minimally coupled vector curvaton.
AU - Dimopoulos, Konstantinos
AU - Karciauskas, Mindaugas
PY - 2008/7/29
Y1 - 2008/7/29
N2 - 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 RA2 coupling. The vector boson acts as a curvaton field imposing the curvature perturbation after the end of inflation, without generating a large-scale anisotropy. The parameter space of the model is fully explored, obtaining the relevant bounds on the inflation scale and the decay constant of the vector curvaton.
AB - 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 RA2 coupling. The vector boson acts as a curvaton field imposing the curvature perturbation after the end of inflation, without generating a large-scale anisotropy. The parameter space of the model is fully explored, obtaining the relevant bounds on the inflation scale and the decay constant of the vector curvaton.
KW - Cosmology of Theories beyond the SM
KW - Beyond Standard Model
UR - http://www.scopus.com/inward/record.url?scp=49749149487&partnerID=8YFLogxK
U2 - 10.1088/1126-6708/2008/07/119
DO - 10.1088/1126-6708/2008/07/119
M3 - Journal article
VL - 2008
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 07
M1 - 119
ER -