Primordial cosmology in mimetic born-infeld gravity
Journal Article
·
· Journal of Cosmology and Astroparticle Physics
- Univ. of The Basque Country UPV/EHU, Bilbao (Spain); Basque Foundation for Science, Bilbao (Spain)
- National Taiwan Univ., Taipei (Taiwan)
- National Taiwan Univ., Taipei (Taiwan); Stanford Univ., Stanford, CA (United States). SLAC National Accelerator Lab.
Here, the Eddington-inspired-Born-Infeld (EiBI) model is reformulated within the mimetic approach. In the presence of a mimetic field, the model contains non-trivial vacuum solutions which could be free of spacetime singularity because of the Born-Infeld nature of the theory. We study a realistic primordial vacuum universe and prove the existence of regular solutions, such as primordial inflationary solutions of de Sitter type or bouncing solutions. Besides, the linear instabilities present in the EiBI model are found to be avoidable for some interesting bouncing solutions in which the physical metric as well as the auxiliary metric are regular at the background level.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1419313
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 11; ISSN 1475-7516
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 15 works
Citation information provided by
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