title: Exciting gauge field and gravitons in brane-antibrane annihilation.
abstract: In this Letter we point out the inevitability of an explosive production of gauge field and gravity wave during an open string tachyon condensation in a cosmological setting, in an effective field theory model. We will be particularly studying a toy model of brane-antibrane inflation in a warped throat where inflation ends via tachyon condensation. We point out that a tachyonic instability helps fragmenting the homogeneous tachyon and excites gauge field and contributes to the stress-energy tensor which also feeds into the gravity waves.
authors.affiliation: Physics Department, Lancaster University, LA1 4YB, United Kingdom.
authors.forename: Anupam
authors.initials: A
authors.lastname: Mazumdar
authors.forename: Horace
authors.initials: H
authors.lastname: Stoica