WMAP bounds on braneworld tachyonic inflation

被引：4
作者：
Bento, MC
Santos, NMC
Sen, AA
机构：
[1] Univ Tecn Lisboa, Dept Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal
[2] Univ Tecn Lisboa, Ctr Fis Interaccoes Fundamentais, Inst Super Tecn, P-1049001 Lisbon, Portugal
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2004年 / 13卷 / 09期
关键词：
inflation; brane cosmology; tachyon condensation;
D O I：
10.1142/S0218271804005195
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We analyze the implications of the Wilkinson Microwave Anisotropy Probe (WMAP) results for a braneworld tachyonic model of inflation. We find that WMAP bounds on n(s) allow us to constrain significantly the parameter space of the model; in particular, extremely weak string coupling is required, g(s) similar to 10(-15). Moreover, our analysis shows that the running of the scalar spectral index is within the bounds determined by WMAP for the allowed range of model parameters; however, it is not possible to obtain n(s) > 1 on large scales and n(s) < 1 on small scales.
引用
收藏
页码：1927 / 1937
页数：11
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