Gauge fields and scalars in rolling tachyon backgrounds

Journal Article (Journal Article)

We investigate the dynamics of gauge and scalar fields on unstable D-branes with rolling tachyons. Assuming an FRW metric on the brane, we find a solution of the tachyon equation of motion which is valid for arbitrary tachyon potentials and scale factors. The equations of motion for a U(1) gauge field and a scalar field in this background are derived. These fields see an effective metric which differs from the original FRW metric. The field equations receive large corrections due to the curvature of the effective metric as well as the time variation of the gauge coupling. The equations of state for these fields resemble those of nonrelativistic matter rather than those of massless particles. © SISSA/ISAS 2003.

Full Text

Duke Authors

Cited Authors

  • Mehen, T; Wecht, B

Published Date

  • February 1, 2003

Published In

Volume / Issue

  • 7 / 2

Start / End Page

  • 1313 - 1326

Electronic International Standard Serial Number (EISSN)

  • 1029-8479

International Standard Serial Number (ISSN)

  • 1029-8479

Digital Object Identifier (DOI)

  • 10.1088/1126-6708/2003/02/058

Citation Source

  • Scopus