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Phys. Rev. D 70, 063513 (2004) [6 pages]

Phantom inflation and primordial perturbation spectrum

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Yun-Song Piao1,2,* and Yuan-Zhong Zhang3,4
1Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918-4, Beijing 100039, People's Republic of China
2Interdisciplinary Center of Theoretical Studies, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100080, People's Republic of China
3CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, People's Republic of China
4Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100080, People's Republic of China

Received 20 January 2004; revised 30 June 2004; published 17 September 2004

In this paper we study the inflation model driven by the phantom field. We propose a possible exit from phantom inflation to our observational cosmology by introducing an additional normal scalar field, similar to hybrid inflation model. Then we discuss the primordial perturbation spectra from various phantom inflation models and give an interesting comparison with those of normal scalar field inflation models.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.70.063513
DOI:
10.1103/PhysRevD.70.063513
PACS:
98.80.Cq, 98.70.Vc

*Electronic address: yspiao@itp.ac.cn

 
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