Preheating and the dark sector of the universe
Journal Article
·
· Physical Review. D, Particles Fields
- Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918-4, Beijing 100039 (China)
Regarding long-life particle produced during preheating after inflation as dark matter, we find that its backreaction on the field {phi} can lock {phi} in a false vacuum up to today under certain conditions. This false vacuum can drive the accelerated expansion of universe at late time and play the role of dark energy. When the number density of dark matter particle is diluted to some value, the field {phi} will become tachyonic and roll to its true minimum rapidly, and the acceleration of universe ceases. We discuss the constraints on the parameters of model from the observations.
- OSTI ID:
- 20705892
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 71, Issue 2; Other Information: DOI: 10.1103/PhysRevD.71.027302; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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