Notes on Tachyon Effective Actions and Veneziano Amplitudes

Details Notes on Tachyon Effective Actions and Veneziano Amplitudes Notes on Tachyon Effective Actions and Veneziano Amplitudes

2004-01-12

arxiv.org/abs/hep-th/0401066v2

Phys.Rev. D69 (2004) 106009

Physics

High Energy Physics

High Energy Physics - Theory

harvmac, 31 pages, 15 figures; v2 minor text modifications

Scientific paper

10.1103/PhysRevD.69.106009

In a previous paper (hep-th/0304045) it has been argued that tachyonic Dirac-Born-Infeld (DBI) actions can be obtained from open string theory in a limit, which generalizes the usual massless DBI limit. In the present note we review this construction focusing on a key property of the proposed tachyon effective actions: how they reproduce appropriate Veneziano amplitudes in a suitably defined kinematical region. Possible extensions and interesting open problems are briefly discussed.

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