Can a vector field be responsible for the curvature perturbation in the Universe?
نویسندگان
چکیده
منابع مشابه
ar X iv : h ep - p h / 06 07 22 9 v 1 2 0 Ju l 2 00 6 Can a vector field be responsible for the curvature perturbation in the Universe ?
I investigate the possibility that the observed curvature perturbation is due to a massive vector field. To avoid generating a large scale anisotropy the vector field is not taken to be driving inflation. Instead it is assumed to become important after inflation when it may dominate the Universe and imprint its perturbation spectrum before its decay, as in the curvaton scenario. It is found tha...
متن کاملar X iv : h ep - p h / 06 07 22 9 v 2 2 2 Se p 20 06 Can a vector field be responsible for the curvature perturbation in the Universe ?
I investigate the possibility that the observed curvature perturbation is due to a massive vector field. To avoid generating a large scale anisotropy the vector field is not taken to be driving inflation. Instead it is assumed to become important after inflation when it may dominate the Universe and imprint its perturbation spectrum before its decay, as in the curvaton scenario. It is found tha...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.74.083502