Exciting gauge field and gravitons in a brane-anti-brane annihilation

Mazumdar, A. and Stoica, H. (2009) Exciting gauge field and gravitons in a brane-anti-brane annihilation. Physical review letters, 102 (9). ISSN 1079-7114

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Abstract

In this paper 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. We will be particularly studying an example of brane-anti-brane 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.