Inflation driven by single geometric tachyon with D-brane orbiting around NS5-branes

被引：2

作者：

Kwon, Pyung Seong ^{[2
]}

Jun, Gyeong Yun ^{[2
]}

Panigrahi, Kamal L. ^{[3
,4
]}

Sami, M. ^{[1
]}

机构：

[1] Jamia Millia Islamia, Ctr Theoret Phys, New Delhi 110092, India

[2] Kyungsung Univ, Dept Phys, Pusan 608736, South Korea

[3] Indian Inst Technol Kharagpur, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India

[4] Indian Inst Technol Kharagpur, Ctr Theoret Studies, Kharagpur 721302, W Bengal, India

来源：

PHYSICS LETTERS B | 2012年 / 712卷 / 1-2期

关键词：

MATRIX DESCRIPTION; COSMOLOGY; DYNAMICS; ENERGY;

D O I：

10.1016/j.physletb.2012.04.056

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate models in which inflation is driven by a single geometrical tachyon. We assume that the D-brane as a probe brane in the background of NS5-branes has non-zero angular momentum which is shown to play similar role as the number of the scalar fields of the assisted inflation. We demonstrate that the angular momentum corrected effective potential allows to account for the observational constraint on COBE normalization, spectral index n(s) and the tensor to scalar ratio of perturbations consistent with WMAP seven years data. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：10 / 15

页数：6