Initial conditions problem in cosmological inflation revisited

Garfinkle, David; Ijjas, Anna; Steinhardt, Paul J.

doi:10.1016/j.physletb.2023.138028

Title: Initial conditions problem in cosmological inflation revisited

Journal Article · Tue Aug 01 00:00:00 EDT 2023 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2023.138028· OSTI ID:2067670

Garfinkle, David; Ijjas, Anna;

We present first results from a novel numerical relativity code based on a tetrad formulation of the Einstein-scalar field equations combined with recently introduced gauge/frame invariant diagnostics indicating that inflation does not solve the homogeneity and isotropy problem beginning from generic initial conditions following a big bang.

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Research Organization:: Princeton Univ., NJ (United States)

Sponsoring Organization:: USDOE; National Science Foundation (NSF); Simons Foundation

Grant/Contract Number:: 654561; DEFG02-91ER40671; SC0007968; PHY-2102914; 947319; FG02-91ER40671

OSTI ID:: 2067670

Alternate ID(s):: OSTI ID: 1997836

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 843 Journal Issue: C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

References (18)

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Supersmoothing through slow contraction Cook, William G.; Glushchenko, Iryna A.; Ijjas, Anna Physics Letters B, Vol. 808 https://doi.org/10.1016/j.physletb.2020.135690	journal	September 2020
Inhomogeneous preinflation across Hubble scales in full general relativity Joana, Cristian; Clesse, Sébastien Physical Review D, Vol. 103, Issue 8 https://doi.org/10.1103/PhysRevD.103.083501	journal	April 2021
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Numerical Relativity as a New Tool for Fundamental Cosmology Ijjas, Anna Physics, Vol. 4, Issue 1 https://doi.org/10.3390/physics4010021	journal	March 2022
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