Unstable D-branes and String Cosmology

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dc.creatorKim, Chanju
dc.creatorKim, Hang Bae
dc.creatorKim, Yoonbai
dc.creatorKwon, O-Kab
dc.creatorLee, Chong Oh
dc.date2004-04-29
dc.date2005-01-05
dc.date.accessioned2026-07-07T04:16:52Z
dc.date.available2026-07-07T04:16:52Z
dc.descriptionCosmological implication of rolling tachyons is 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 e-folding of scale factor is also discussed by numerical analysis.
dc.descriptionLaTex, 11 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/hep-th/0404242
dc.identifierhttp://arxiv.org/abs/hep-th/0404242
dc.identifierJ.Korean Phys.Soc. 45 (2004) S181-S202
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/52535
dc.subjectHigh Energy Physics - Theory
dc.titleUnstable D-branes and String Cosmology
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