Initial conditions problem in cosmological inflation revisited

David Garfinkle; Anna Ijjas; Paul J. Steinhardt

doi:10.1016/j.physletb.2023.138028

Initial conditions problem in cosmological inflation revisited

David Garfinkle, Anna Ijjas, Paul J. Steinhardt

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6 Scopus citations

Abstract

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. The results provide support for the argument that inflation does not solve the homogeneity and isotropy problem beginning from generic initial conditions following a big bang.

Original language	English (US)
Article number	138028
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	843
DOIs	https://doi.org/10.1016/j.physletb.2023.138028
State	Published - Aug 10 2023

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

Cosmic inflation
Initial conditions problem
Numerical relativity

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10.1016/j.physletb.2023.138028

Cite this

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title = "Initial conditions problem in cosmological inflation revisited",

abstract = "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. The results provide support for the argument that inflation does not solve the homogeneity and isotropy problem beginning from generic initial conditions following a big bang.",

keywords = "Cosmic inflation, Initial conditions problem, Numerical relativity",

author = "David Garfinkle and Anna Ijjas and Steinhardt, {Paul J.}",

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year = "2023",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2023.138028",

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T1 - Initial conditions problem in cosmological inflation revisited

AU - Garfinkle, David

AU - Ijjas, Anna

AU - Steinhardt, Paul J.

PY - 2023/8/10

Y1 - 2023/8/10

N2 - 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. The results provide support for the argument that inflation does not solve the homogeneity and isotropy problem beginning from generic initial conditions following a big bang.

AB - 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. The results provide support for the argument that inflation does not solve the homogeneity and isotropy problem beginning from generic initial conditions following a big bang.

KW - Cosmic inflation

KW - Initial conditions problem

KW - Numerical relativity

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SN - 0370-2693

VL - 843

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 138028

ER -

Initial conditions problem in cosmological inflation revisited

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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