標題: On the possibility of blue tensor spectrum within single field inflation
作者: Cai, Yi-Fu
Gong, Jinn-Ouk
Pi, Shi
Saridakis, Emmanuel N.
Wu, Shang-Yu
電子物理學系
丘成桐中心
Department of Electrophysics
Shing-Tung Yau Center
公開日期: 1-Nov-2015
摘要: We present a series of theoretical constraints on the potentially viable inflation models that might yield a blue spectrum for primordial tensor perturbations. By performing a detailed dynamical analysis we show that, while there exists such possibility, the corresponding phase space is strongly bounded. Our result implies that, in order to achieve a blue tilt for inflationary tensor perturbations, one may either construct a non-canonical inflation model delicately, or study the generation of primordial tensor modes beyond the standard scenario of single slow-roll field. (C) 2015 The Authors. Published by Elsevier B.V.
URI: http://dx.doi.org/10.1016/j.nuclphysb.2015.09.025
http://hdl.handle.net/11536/129413
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2015.09.025
期刊: NUCLEAR PHYSICS B
Volume: 900
起始頁: 517
結束頁: 532
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