Density perturbations in multifield inflationary models

V. F. Mukhanov; Paul J. Steinhardt

doi:10.1016/S0370-2693(98)00032-X

Density perturbations in multifield inflationary models

V. F. Mukhanov, Paul J. Steinhardt

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

62 Scopus citations

Abstract

We derive a closed-form, analytical expression for the spectrum of long-wavelength density perturbations in inflationary models with two (or more) inflaton degrees of freedom that is valid in the slow-roll approximation. We illustrate several classes of potentials for which this expression reduces to a simple, algebraic expression.

Original language	English (US)
Pages (from-to)	52-60
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	422
Issue number	1-4
DOIs	https://doi.org/10.1016/S0370-2693(98)00032-X
State	Published - Mar 12 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/S0370-2693(98)00032-X

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title = "Density perturbations in multifield inflationary models",

abstract = "We derive a closed-form, analytical expression for the spectrum of long-wavelength density perturbations in inflationary models with two (or more) inflaton degrees of freedom that is valid in the slow-roll approximation. We illustrate several classes of potentials for which this expression reduces to a simple, algebraic expression.",

author = "Mukhanov, \{V. F.\} and Steinhardt, \{Paul J.\}",

note = "Funding Information: We thank G. Huey for suggestions for improving the manuscript. This research was supported by the Department of Energy at Penn, DE-FG02-95ER40893 (PJS), and by the Tomalla Foundation (VM).",

year = "1998",

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AU - Mukhanov, V. F.

AU - Steinhardt, Paul J.

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PY - 1998/3/12

Y1 - 1998/3/12

N2 - We derive a closed-form, analytical expression for the spectrum of long-wavelength density perturbations in inflationary models with two (or more) inflaton degrees of freedom that is valid in the slow-roll approximation. We illustrate several classes of potentials for which this expression reduces to a simple, algebraic expression.

AB - We derive a closed-form, analytical expression for the spectrum of long-wavelength density perturbations in inflationary models with two (or more) inflaton degrees of freedom that is valid in the slow-roll approximation. We illustrate several classes of potentials for which this expression reduces to a simple, algebraic expression.

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DO - 10.1016/S0370-2693(98)00032-X

M3 - Article

AN - SCOPUS:0039397951

SN - 0370-2693

VL - 422

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EP - 60

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

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

IS - 1-4

ER -

Density perturbations in multifield inflationary models

Abstract

All Science Journal Classification (ASJC) codes

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