On Tachyon kinks from the DBI action

Details On Tachyon kinks from the DBI action On Tachyon kinks from the DBI action

2003-10-08

arxiv.org/abs/hep-th/0310079v1

Physics

High Energy Physics

High Energy Physics - Theory

proceedings of the second string phenomenology conference, Durham, 30th July to 4th August 2003

Scientific paper

We consider solitonic solutions of the DBI tachyon effective action for a non-BPS brane in the presence of an electric field. We find that for a constant electric field $\tilde E\le 1$, regular solitons compactified on a circle admit a singular and decompactified limit corresponding to Sen's proposal provided the tachyon potential satisfies some restrictions. On the other hand for the critical electric field $\tilde E=1$, regular and finite energy solitons are constructed without any restriction on the potential.

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