# Tachyon potentials, star products and universality

@article{Rastelli2001TachyonPS, title={Tachyon potentials, star products and universality}, author={Leonardo Rastelli and Barton Zwiebach}, journal={Journal of High Energy Physics}, year={2001}, volume={2001}, pages={038-038} }

We develop an efficient recursive method to evaluate the tachyon potential using the relevant universal subalgebra of the open string star algebra. This method, using off-shell versions of Virasoro Ward identities, avoids explicit computation of conformal transformations of operators and does not require a choice of background. We illustrate the procedure with a pedagogic computation of the level six tachyon potential in an arbitrary gauge, and the evaluation of a few simple star products. We…

## 254 Citations

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