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Bouncing cosmology made simple

Author(s): Ijjas, Anna; Steinhardt, Paul J.

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Abstract: We introduce the ‘wedge diagram’, an intuitive way to illustrate how cosmological models with a classical (non-singular) bounce generically resolve fundamental problems in cosmology. These include the well-known horizon, flatness, and inhomogeneity problems; the small tensor-to-scalar ratio observed in the cosmic microwave background; the low entropy at the beginning of a hot, expanding phase; and the avoidance of quantum runaway. The same diagrammatic approach can be used to compare with other cosmological scenarios.
Publication Date: 12-Jul-2018
Electronic Publication Date: 1-Jun-2018
Citation: Ijjas, Anna, Steinhardt, Paul J. (2018). Bouncing cosmology made simple. CLASSICAL AND QUANTUM GRAVITY, 35, doi:10.1088/1361-6382/aac482
DOI: doi:10.1088/1361-6382/aac482
ISSN: 0264-9381
EISSN: 1361-6382
Type of Material: Journal Article
Version: Author's manuscript

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