Dilatons in string cosmology

Nemanja Kaloper; Keith A. Olive

doi:10.1016/0927-6505(93)90021-5

Dilatons in string cosmology

Nemanja Kaloper
, Keith A. Olive

Physics and Astronomy (Twin Cities)

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

57 Scopus citations

Abstract

We consider the evolution of the dilaton in a Friedmann-Robertson-Walker background by numerically integrating the equations of motion as determined by the low-energy expansion of the string theory action. We find that the dilaton may be fixed by either self-interaction terms providing a dilaton mass or decoupling in a radiation dominated Universe. We also comment on conditions applicable to an exponentially expanding phase.

Original language	English (US)
Pages (from-to)	185-193
Number of pages	9
Journal	Astroparticle Physics
Volume	1
Issue number	2
DOIs	https://doi.org/10.1016/0927-6505(93)90021-5
State	Published - Mar 1993

Bibliographical note

Funding Information:
The work of KAO was supportedi n part by DOE grantD E-AC02-83ER40105a nd by a Presidential Young InvestigatorA ward. The work of NK was supported in part by the University of MinnesotaD octoral DissertationF ellowship.

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title = "Dilatons in string cosmology",

abstract = "We consider the evolution of the dilaton in a Friedmann-Robertson-Walker background by numerically integrating the equations of motion as determined by the low-energy expansion of the string theory action. We find that the dilaton may be fixed by either self-interaction terms providing a dilaton mass or decoupling in a radiation dominated Universe. We also comment on conditions applicable to an exponentially expanding phase.",

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

note = "Funding Information: The work of KAO was supportedi n part by DOE grantD E-AC02-83ER40105a nd by a Presidential Young InvestigatorA ward. The work of NK was supported in part by the University of MinnesotaD octoral DissertationF ellowship.",

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AU - Olive, Keith A.

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PY - 1993/3

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N2 - We consider the evolution of the dilaton in a Friedmann-Robertson-Walker background by numerically integrating the equations of motion as determined by the low-energy expansion of the string theory action. We find that the dilaton may be fixed by either self-interaction terms providing a dilaton mass or decoupling in a radiation dominated Universe. We also comment on conditions applicable to an exponentially expanding phase.

AB - We consider the evolution of the dilaton in a Friedmann-Robertson-Walker background by numerically integrating the equations of motion as determined by the low-energy expansion of the string theory action. We find that the dilaton may be fixed by either self-interaction terms providing a dilaton mass or decoupling in a radiation dominated Universe. We also comment on conditions applicable to an exponentially expanding phase.

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UR - https://www.scopus.com/pages/publications/0000448489#tab=citedBy

U2 - 10.1016/0927-6505(93)90021-5

DO - 10.1016/0927-6505(93)90021-5

M3 - Article

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VL - 1

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EP - 193

JO - Astroparticle Physics

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ER -

Dilatons in string cosmology

Abstract

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