On One-Loop Approximation to Tachyon Potentials
نویسندگان
چکیده
We compute the one-loop corrections to the tachyon potentials in both, bosonic and supersymmetric, cases by worldsheet methods. In fact, there is no contradiction between this approach and the Feynman diagram expansions arising from the tree level effective actions. In the process, we also get some insight on tachyon condensation from the viewpoint of closed string modes and show that there is an instability due to the closed string tachyon in the bosonic case. PACS : 11.25.-w
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تاریخ انتشار 2001