Theories of inflation and conformal transformation

Sunil Kalara; Nemanja Kaloper; Keith A. Olive

doi:10.1016/0550-3213(90)90270-N

Theories of inflation and conformal transformation

Sunil Kalara
, Nemanja Kaloper
, Keith A. Olive

Physics and Astronomy (Twin Cities)

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

72 Scopus citations

Abstract

We show that seberal different theories of inflation including R², Brans-Dicke, and induced-gravity inflation are all related to generalized or power-law inflation by means of conformal transformations. These theories all involve non-standard gravity, and the use of conformal transformations allows one to obtain standard inflationary predictions such as the expansion time-scale, reheating and density perturbations in each case very simply. We also discuss the possibilities of this method to be applied to string theory.

Original language	English (US)
Pages (from-to)	252-272
Number of pages	21
Journal	Nuclear Physics, Section B
Volume	341
Issue number	1
DOIs	https://doi.org/10.1016/0550-3213(90)90270-N
State	Published - Sep 3 1990

Bibliographical note

Funding Information:
The work of NK and KAO was supported in part by DOE grant DE-ACO2-88ER-40105 and that of KAO by a Presidential Young Investigation Award.

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10.1016/0550-3213(90)90270-N

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title = "Theories of inflation and conformal transformation",

abstract = "We show that seberal different theories of inflation including R2, Brans-Dicke, and induced-gravity inflation are all related to generalized or power-law inflation by means of conformal transformations. These theories all involve non-standard gravity, and the use of conformal transformations allows one to obtain standard inflationary predictions such as the expansion time-scale, reheating and density perturbations in each case very simply. We also discuss the possibilities of this method to be applied to string theory.",

author = "Sunil Kalara and Nemanja Kaloper and Olive, \{Keith A.\}",

note = "Funding Information: The work of NK and KAO was supported in part by DOE grant DE-ACO2-88ER-40105 and that of KAO by a Presidential Young Investigation Award.",

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doi = "10.1016/0550-3213(90)90270-N",

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AU - Kalara, Sunil

AU - Kaloper, Nemanja

AU - Olive, Keith A.

N1 - Funding Information: The work of NK and KAO was supported in part by DOE grant DE-ACO2-88ER-40105 and that of KAO by a Presidential Young Investigation Award.

PY - 1990/9/3

Y1 - 1990/9/3

N2 - We show that seberal different theories of inflation including R2, Brans-Dicke, and induced-gravity inflation are all related to generalized or power-law inflation by means of conformal transformations. These theories all involve non-standard gravity, and the use of conformal transformations allows one to obtain standard inflationary predictions such as the expansion time-scale, reheating and density perturbations in each case very simply. We also discuss the possibilities of this method to be applied to string theory.

AB - We show that seberal different theories of inflation including R2, Brans-Dicke, and induced-gravity inflation are all related to generalized or power-law inflation by means of conformal transformations. These theories all involve non-standard gravity, and the use of conformal transformations allows one to obtain standard inflationary predictions such as the expansion time-scale, reheating and density perturbations in each case very simply. We also discuss the possibilities of this method to be applied to string theory.

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JO - Nuclear Physics, Section B

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IS - 1

ER -

Theories of inflation and conformal transformation

Abstract

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