Primordial fluctuations in the warm inflation scenario with a more realistic coarse-grained field

被引：27

作者：

Bellini, M ^{[1
]}

机构：

[1] Univ Nacl Mar Plata, Fac Ciencias Exactas & Nat, Dept Fis, RA-7600 Mar Del Plata, Argentina

来源：

NUCLEAR PHYSICS B | 1999年 / 563卷 / 1-2期

关键词：

D O I：

10.1016/S0550-3213(99)00537-4

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

I study a semiclassical approach to the warm inflation scenario introduced in previous works. In this work, I define the fluctuations for the matter field by means of a new coarse-grained field with a suppression factor G. This field describes the matter fluctuations on the now observable scale of the universe. The power spectrum for the fluctuations of the matter field is analyzed in both de Sitter and power-law expansions for the universe. The constraint for the spectral index gives a constraint for the mass of the matter field in the de Sitter expansion and a constraint for the friction parameter in the power-law expansion for the universe. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：245 / 258

页数：14

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