Amplification of curvature perturbations in cyclic cosmology

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.123505· OSTI ID:21503734

Jun, Zhang; Zhiguo, Liu; Yunsong, Piao ^[1]

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1. College of Physical Sciences, Graduate School of Chinese Academy of Sciences, Beijing 100049 (China)

We analytically and numerically show that through the cycles with nonsingular bounce, the amplitude of curvature perturbation on a large scale will be amplified and the power spectrum will redden. In some sense, this amplification will eventually destroy the homogeneity of the background, which will lead to the ultimate end of cycles of the global universe. We argue that for the model with increasing cycles, it might be possible that a fissiparous multiverse will emerge after one or several cycles, in which the cycles will continue only at corresponding local regions.

• OSTI ID: 21503734
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 12; Other Information: DOI: 10.1103/PhysRevD.82.123505; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLIFICATION
AMPLITUDES
COSMOLOGY
DISTURBANCES
PERTURBATION THEORY
SIMULATION
SPECTRA
UNIVERSE