Difficulties for field theoretical inflation in string models

Sunil Kalara; Keith A. Olive

doi:10.1016/0370-2693(89)91410-X

Difficulties for field theoretical inflation in string models

Sunil Kalara
, Keith A. Olive

Physics and Astronomy (Twin Cities)

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

34 Scopus citations

Abstract

We consider the possibilities for De Sitter solutions of the gravitational equations of motion in string theory. When the potential for the dilaton field is taken to be zero, no such solution exists. At the tree level when dilaton self-interactions are included we find an approximate De Sitter solution in the limit α′R≪1 (exact when α′ = 0). We also solve for exact solutions of the equations of motion leading to linear expansion and comment on conditions necessary to yield a background vacuum energy density.

Original language	English (US)
Pages (from-to)	148-152
Number of pages	5
Journal	Physics Letters B
Volume	218
Issue number	2
DOIs	https://doi.org/10.1016/0370-2693(89)91410-X
State	Published - Feb 16 1989

Bibliographical note

Funding Information:
We would like to thank J. Ellis and C. Kounnas for useful conversationTs.h is work was supportedin part by DOE grant DE-AC02-83ER-40105T. he work of K.A.O. was also supportedin part by a Presidential Young InvestigatoArw ard.

Publisher link

10.1016/0370-2693(89)91410-X

Find It

Find It at U of M Libraries

Cite this

@article{e4c6e2762e9b45b8afeb4fccbb28bcf6,

title = "Difficulties for field theoretical inflation in string models",

abstract = "We consider the possibilities for De Sitter solutions of the gravitational equations of motion in string theory. When the potential for the dilaton field is taken to be zero, no such solution exists. At the tree level when dilaton self-interactions are included we find an approximate De Sitter solution in the limit α′R≪1 (exact when α′ = 0). We also solve for exact solutions of the equations of motion leading to linear expansion and comment on conditions necessary to yield a background vacuum energy density.",

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

note = "Funding Information: We would like to thank J. Ellis and C. Kounnas for useful conversationTs.h is work was supportedin part by DOE grant DE-AC02-83ER-40105T. he work of K.A.O. was also supportedin part by a Presidential Young InvestigatoArw ard.",

year = "1989",

month = feb,

day = "16",

doi = "10.1016/0370-2693(89)91410-X",

language = "English (US)",

volume = "218",

pages = "148--152",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Difficulties for field theoretical inflation in string models

AU - Kalara, Sunil

AU - Olive, Keith A.

N1 - Funding Information: We would like to thank J. Ellis and C. Kounnas for useful conversationTs.h is work was supportedin part by DOE grant DE-AC02-83ER-40105T. he work of K.A.O. was also supportedin part by a Presidential Young InvestigatoArw ard.

PY - 1989/2/16

Y1 - 1989/2/16

N2 - We consider the possibilities for De Sitter solutions of the gravitational equations of motion in string theory. When the potential for the dilaton field is taken to be zero, no such solution exists. At the tree level when dilaton self-interactions are included we find an approximate De Sitter solution in the limit α′R≪1 (exact when α′ = 0). We also solve for exact solutions of the equations of motion leading to linear expansion and comment on conditions necessary to yield a background vacuum energy density.

AB - We consider the possibilities for De Sitter solutions of the gravitational equations of motion in string theory. When the potential for the dilaton field is taken to be zero, no such solution exists. At the tree level when dilaton self-interactions are included we find an approximate De Sitter solution in the limit α′R≪1 (exact when α′ = 0). We also solve for exact solutions of the equations of motion leading to linear expansion and comment on conditions necessary to yield a background vacuum energy density.

UR - https://www.scopus.com/pages/publications/0000148593

UR - https://www.scopus.com/pages/publications/0000148593#tab=citedBy

U2 - 10.1016/0370-2693(89)91410-X

DO - 10.1016/0370-2693(89)91410-X

M3 - Article

AN - SCOPUS:0000148593

SN - 0370-2693

VL - 218

SP - 148

EP - 152

JO - Physics Letters B

JF - Physics Letters B

IS - 2

ER -

Difficulties for field theoretical inflation in string models

Abstract

Bibliographical note

Publisher link

Find It

Other files and links

Fingerprint

Cite this