High-Energy Symmetry of Bosonic Open String Theory in the Light-like Linear Dilaton Background

Details High-Energy Symmetry of Bosonic Open String Theory in the Light-like Linear Dilaton Background High-Energy Symmetry of Bosonic Open String Theory in the Light-like Linear Dilaton Background

2009-05-14

arxiv.org/abs/0905.2322v4

JHEP 0911:081,2009

Physics

High Energy Physics

High Energy Physics - Theory

42pages, 3figures, 5tables, typos corrected, commments and reference added,

Scientific paper

10.1088/1126-6708/2009/11/081

High-energy limits of fixed-angle tree-level stringy scattering amplitudes in the light-like linear dilaton background are calculated. Treating the time component of the gradient of light-like dilaton field (V_0) as a moduli parameter, we show that: (1) there exists a new fixed-point (V_0/E \to \infty) in the moduli space of the bosonic open string theory, where a new high-energy symmetry among scattering amplitudes can be identified, (2) this new symmetry can be interpreted as a deformation of the flat-space high-energy symmetry, as proposed by D. Gross. Hence, our results give a concrete illustration about the relation between high-energy stringy symmetry and the background independent formulation of string theory.

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