ar X iv : 0 80 6 . 40 65 v 1 [ he p - ph ] 2 5 Ju n 20 08 SIT - HEP / TM - 45 Modulated Inflation ( @ SUSY 08 )
نویسنده
چکیده
We consider cosmological perturbations caused by modulated inflaton velocity. During inflation, the inflaton motion is damped and the velocity is determined by the parameters such as couplings or masses that may depend on light fields(moduli). The number of e-foldings is different in different patches if there are spatial fluctuations of such parameters. Based on this simple idea, we consider “modulated inflation” in which the curvature perturbation is generated by the fluctuation of the inflaton velocity. This talk is based on our recent papers[1].
منابع مشابه
ar X iv : 0 80 1 . 26 48 v 3 [ he p - ph ] 2 5 Ja n 20 08 SIT - HEP / TM - 42 Modulated Inflation
We have studied modulated inflation that generates curvature perturbation from light-field fluctuation. As discussed in previous works, even if the fluctuation of the inflaton itself does not generate the curvature perturbation, fluctuation of a light field may induce fluctuation for the end-line of inflation and this may lead to generation of cosmological perturbation “at the end of the inflat...
متن کاملar X iv : 0 80 1 . 26 48 v 2 [ he p - ph ] 1 8 Ja n 20 08 SIT - HEP / TM - 42 Modulated Inflation
We have studied modulated inflation that generates curvature perturbation from light-field fluctuation. As discussed in previous works, even if the fluctuation of the inflaton itself does not generate the curvature perturbation, fluctuation of a light field may induce fluctuation for the end-line of inflation and this may lead to generation of cosmological perturbation ”at the end of the inflat...
متن کاملar X iv : 0 80 1 . 26 48 v 1 [ he p - ph ] 1 7 Ja n 20 08 SIT - HEP / TM - 42 Modulated Inflation
We have studied modulated inflation that generates curvature perturbation from light-field fluctuation. As discussed in previous works, even if the fluctuation of the inflaton itself does not generate the curvature perturbation, fluctuation of a light field may induce fluctuation for the end-line of inflation and this may lead to generation of cosmological perturbation ”at the end of the inflat...
متن کاملar X iv : 0 80 1 . 26 48 v 5 [ he p - ph ] 1 2 Ju n 20 08 SIT - HEP / TM - 42 Modulated Inflation
We have studied modulated inflation that generates curvature perturbation from light-field fluctuation. As discussed in previous works, even if the fluctuation of the inflaton itself does not generate the curvature perturbation at the horizon crossing, fluctuation of a light field may induce fluctuation for the end-line of inflation and this may lead to generation of cosmological perturbation “...
متن کاملar X iv : 0 80 1 . 26 48 v 6 [ he p - ph ] 1 4 Ju n 20 08 SIT - HEP / TM - 42 Modulated Inflation Tomohiro Matsuda
We have studied modulated inflation that generates curvature perturbation from light-field fluctuation. As discussed in previous works, even if the fluctuation of the inflaton itself does not generate the curvature perturbation at the horizon crossing, fluctuation of a light field may induce fluctuation for the end-line of inflation and this may lead to generation of cosmological perturbation “...
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تاریخ انتشار 2008