On perturbations of a quintom bounce

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2008/03/013· OSTI ID:22137810

Yifu, Cai; Taotao, Qiu; Xinmin, Zhang ^[1]; Brandenberger, Robert ^[2]

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1. Institute of High Energy Physics, Chinese Academy of Sciences, PO Box 918-4, Beijing 100049 (China)
2. Department of Physics, McGill University, Montreal, QC, H3A 2T8 (Canada)

A quintom universe with an equation of state crossing the cosmological constant boundary can provide a bouncing solution dubbed the quintom bounce and thus resolve the big bang singularity. In this paper, we investigate the cosmological perturbations of the quintom bounce both analytically and numerically. We find that the fluctuations in the dominant mode in the post-bounce expanding phase couple to the growing mode of the perturbations in the pre-bounce contracting phase.

• OSTI ID: 22137810
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2008, Issue 03; 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
COSMOLOGICAL CONSTANT
DISTURBANCES
EQUATIONS OF STATE
MATHEMATICAL SOLUTIONS
NONLUMINOUS MATTER
SINGULARITY
UNIVERSE