Comments on Higher Derivative Terms for the Tachyon Action

Details Comments on Higher Derivative Terms for the Tachyon Action Comments on Higher Derivative Terms for the Tachyon Action

2004-03-26

arxiv.org/abs/hep-th/0403269v1

Physics

High Energy Physics

High Energy Physics - Theory

21 pages

Scientific paper

We consider the open string tachyon action in a world-sheet sigma model approach. We present explicit calculations up to order 8 in derivatives for the bosonic string, and mimic these to order 6 for the superstring, including terms with multiple derivatives acting on the tachyon field. We reproduce lower derivative terms obtained elsewhere, and speculate on the role of the world-sheet contact terms regularizing the action for the superstring tachyon.

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