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Unstable D-branes and string cosmology

Title
Unstable D-branes and string cosmology
Authors
Kim C.Kim H.B.Kim Y.Kwon O.-K.Lee C.O.
Ewha Authors
김찬주
SCOPUS Author ID
김찬주scopus
Issue Date
2004
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
Journal of the Korean Physical Society vol. 45, no. SUPPL., pp. S181 - S192
Indexed
SCI; SCIE; SCOPUS; KCI scopus
Document Type
Conference Paper
Abstract
The cosmological implications of rolling tachyons are reported in the context of effective field theory. With a brief review of rolling tachyons in both flat and curved spacetimes, we study the string cosmological model with both tachyon and dilaton. In the string frame, flat space solutions of both initial-stage and late-time are obtained in closed form. In the Einstein frame, every expanding solution is decelerating. When a Born-Infeld U(1) gauge field is coupled, enhancement of the e-folding of the scale factor is also discussed by numerical analysis.
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자연과학대학 > 물리학전공 > Journal papers
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