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arXiv · hep-th/0111155

tt* Geometry and Closed String Tachyon Potential

Atish Dabholkar·Cumrun Vafa
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Abstract

We propose a closed string tachyon action including kinetic and potential terms for non-supersymmetric orbifolds. The action is given in terms of solutions to $tt^*$ equations which captures the geometry of vacua of the corresponding N=2 worldsheet theory. In certain cases the solutions are well studied. In case of tachyons of ${\bf C}/Z_n$, solutions to affine toda equations determine the action. We study the particular case of ${\bf C}/Z_3\to {\bf C}$ in detail and find that the Tachyon action is determined in terms of a solution to Painleve III equation.

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Atish Dabholkar, Cumrun Vafa. 2001-11-16. tt* Geometry and Closed String Tachyon Potential. https://doi.org/10.1088/1126-6708%2F2002%2F02%2F008

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