Nonsingular bouncing cosmologies in light of BICEP2

Journal Article · Tue Jul 01 00:00:00 EDT 2014 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2014/07/033· OSTI ID:22373452

Cai, Yi-Fu; Quintin, Jerome ^[1]; Saridakis, Emmanuel N. ^[2]; Wilson-Ewing, Edward ^[3]

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1. Department of Physics, McGill University, 3600 rue University, Montréal, QC, H3A 2T8 Canada (Canada)
2. Physics Division, National Technical University of Athens, 15780 Zografou Campus, Athens (Greece)
3. Department of Physics and Astronomy, Louisiana State University, Tower Drive, Baton Rouge, 70803 (United States)

We confront various nonsingular bouncing cosmologies with the recently released BICEP2 data and investigate the observational constraints on their parameter space. In particular, within the context of the effective field approach, we analyze the constraints on the matter bounce curvaton scenario with a light scalar field, and the new matter bounce cosmology model in which the universe successively experiences a period of matter contraction and an ekpyrotic phase. Additionally, we consider three nonsingular bouncing cosmologies obtained in the framework of modified gravity theories, namely the Hořava-Lifshitz bounce model, the f(T) bounce model, and loop quantum cosmology.

• OSTI ID: 22373452
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CONTRACTION
GRAVITATION
MATTER
QUANTUM COSMOLOGY
SCALAR FIELDS
SPACE
UNIVERSE