On the Cosmological Relevance of the Tachyon

Preprint

23 July 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-th/0204204

Abstract

We analyse of the effective action of the tachyon field on a D-brane, of both bosonic as well as superstring theory. We find that the non-standard kinetic term of the tachyon field requires a correction to the Born-Infeld type Lagrangian. The cosmological significance of the resulting dynamics is explored. We also examine if the rolling tachyon can provide an effective cosmological constant and contrast its behaviour with quintessence.

Keywords

COSMOLOGICAL SIGNIFICANCE
COSMOLOGICAL RELEVANCE
COSMOLOGICAL CONSTANT
RESULTING DYNAMICS
STANDARD KINETIC
EFFECTIVE ACTION
TACHYON FIELD

All Related Versions

Version 1, 2002-04-24, ArXiv
Version 2, 2002-05-17, ArXiv
Version 3, 2002-07-23, ArXiv
Published version: Physics Letters B, 544 (3-4), 231.

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