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Geometrical Tachyon Dynamics in the Background of a Bulk Tachyon Field

Eleftherios Papantonopoulos·Ioanna Pappa·Vassilios Zamarias
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Abstract

We study the dynamics of a D3-brane moving in the background of a bulk tachyon field of a D3-brane solution of Type-0 string theory. We show that the dynamics on the probe D3-brane can be described by a geometrical tachyon field rolling down its potential which is modified by a function of the bulk tachyon and inflation occurs at weak string coupling, where the bulk tachyon condenses, near the top of the geometrical tachyon potential. We also find a late accelerating phase when the bulk tachyon asymptotes to zero which in the geometrical tachyon picture corresponds to the minimum of the geometrical potential.

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Eleftherios Papantonopoulos, Ioanna Pappa, Vassilios Zamarias. 2006-04-28. Geometrical Tachyon Dynamics in the Background of a Bulk Tachyon Field. https://doi.org/10.1088/1126-6708%2F2006%2F05%2F038

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