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Cited by 348

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Inflation and squeezed quantum states

Open access
Albrecht, Andreas, Ferreira, Pedro, Joyce, Michael, Prokopec, Tomislav·1994·Physical Review D

Abstract

Inflationary cosmology is analyzed from the point of view of squeezed quantum states. As noted by Grishchuk and Sidorov, the amplification of quantum fluctuations into macroscopic perturbations which occurs during cosmic inflation is a process of quantum squeezing. We carefully develop the squeezed state formalism and derive the equations that govern the evolution of a Gaussian initial state. We derive the power spectrum of density perturbations for a simple inflationary model and discuss its features. We conclude that the squeezed state formalism provides an interesting framework within which to study the amplificaiton process, but, in disagreement with the claims of Grishchuk and Sidorov, that it does not provide us with any new physical results.

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Metadata

Authors
Albrecht, A., Ferreira, P., Joyce, M., & Prokopec, T.
Venue
Physical Review D
Published
1994-10-15
Volume
50
Issue
8
Pages
4807-4820
ISSN
0556-2821 (ISSN-L)
OpenAlex
W2128149447
Cited by
348
References
2
FWCI
4.92
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Inflation and squeezed quantum states. https://app.cochat.ai/papers/10.1103/physrevd.50.4807
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Albrecht, A., Ferreira, P., Joyce, M., & Prokopec, T. (1994). Inflation and squeezed quantum states. Physical Review D. https://doi.org/10.1103/physrevd.50.4807

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