Graceful exit in extended inflation and implications for density perturbations

Robert Crittenden; Paul J. Steinhardt

doi:10.1016/0370-2693(92)91477-Q

Graceful exit in extended inflation and implications for density perturbations

Robert Crittenden, Paul J. Steinhardt

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P(k) ∝ kⁿ, where n might lie anywhere between 0.5 and 1.0 (whereas, previously, it appeared that the range 1.0>n{greater-than or approximate}0.84 was disallowed).

Original language	English (US)
Pages (from-to)	32-36
Number of pages	5
Journal	Physics Letters B
Volume	293
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(92)91477-Q
State	Published - Oct 22 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/0370-2693(92)91477-Q

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abstract = "Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P(k) ∝ kn, where n might lie anywhere between 0.5 and 1.0 (whereas, previously, it appeared that the range 1.0>n{greater-than or approximate}0.84 was disallowed).",

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AU - Steinhardt, Paul J.

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N2 - Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P(k) ∝ kn, where n might lie anywhere between 0.5 and 1.0 (whereas, previously, it appeared that the range 1.0>n{greater-than or approximate}0.84 was disallowed).

AB - Two qualitatively different modes of ending superluminal expansion are possible in extended inflation. One mode, different from the one envoked in most extended models to date, easily avoids making big bubbles that distort the cosmic microwave background radiation (CMBR). In this mode, the spectrum of density fluctuations is found to be scale-free, P(k) ∝ kn, where n might lie anywhere between 0.5 and 1.0 (whereas, previously, it appeared that the range 1.0>n{greater-than or approximate}0.84 was disallowed).

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DO - 10.1016/0370-2693(92)91477-Q

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SP - 32

EP - 36

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Graceful exit in extended inflation and implications for density perturbations

Abstract

All Science Journal Classification (ASJC) codes

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