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Closed String Tachyons and RG flows

Takao Suyama
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Abstract

We consider bulk tachyon condensations in a non-linear sigma model whose low energy effective theory contains a nontrivial scalar potential. We argue that one would typically encounter a strong coupling background along a RG flow corresponding to a bulk tachyon condensation, beyond which the RG analysis would not be reliable. In a range of the flow in which the string coupling constant is small, we can show that the tachyon condensation actually decreases the central charge of the sigma model.

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Takao Suyama. 2002-10-07. Closed String Tachyons and RG flows. https://doi.org/10.1088/1126-6708%2F2002%2F10%2F051

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