Calculation of Zero-Norm States and Reduction of Stringy Scattering Amplitudes(Particles and Fields)

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概要

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• We give a simplified method to generate two types of zero-norm states in the old covariant first quantized (OCFQ) spectrum of open bosonic string. Zero-norm states up to the fourth massive level and general formulas of some zero-norm tensor states at arbitrary mass levels are calculated. On-shell Ward identities generated by zero-norm states and the factorization property of stringy vertex operators can then be used to argue that the string-tree scattering amplitudes of the degenerate lower spin propagating states are fixed by those of higher spin propagating states at each fixed mass level. This decoupling phenomenon is, in contrast to Gross's high-energy symmetries, valid to all energies. As examples, we explicitly demonstrate this stringy phenomenon up to the fourth massive level (spin-five), which justifies the calculation of two other previous approaches based on the massive worldsheet sigma-model and Witten's string field theory (WSFT).

• 一般社団法人日本物理学会の論文
• 2005-07-25

著者

• Lee Jen-chi

  Department Of Electrophysics National Chiao-tang University

• LEE Jen

  Department of Electrophysics, National Chiao-Tung University

関連論文

• Calculation of Zero-Norm States and Reduction of Stringy Scattering Amplitudes(Particles and Fields)
• One-Loop Massive Scattering Amplitudes and Ward Identities in String Theory(Particles and Fields)
• Higher Spin String States Scattered from D-Particle in the Regge Regime and Factorized Ratios of Fixed Angle Scatterings(Particles and Fields)
• Higher Spin String States Scattered from D-Particle in the Regge Regime and Factorized Ratios of Fixed Angle Scatterings
• Exponential Fall-Off Behavior of Regge Scatterings in Compactified Open String Theory(Particles and Fields)
• Calculation of Zero-Norm States and Reduction of Stringy Scattering Amplitudes(Particles and Fields)

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