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arXiv · 1003.0230

Note on Light-like Tachyon Condensation

Yushu Song
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Abstract

In this paper closed string emission and open string pair production from the light-like rolling tachyon solution are calculated in subcritical string theory in the background of a linear dilaton. The rolling light-like tachyon represents the inhomogeneous decay of unstable D-brane. The decay rate is given by the imaginary part of annulus diagram which can be calculated using the boundary state/sigma-model method. It is found that the decay rate is finite in the open string ultraviolet region and depends on tachyon profile in the open string infrared region.

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Yushu Song. 2010-06-23. Note on Light-like Tachyon Condensation. https://doi.org/10.1007/jhep07(2010)030

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