Comments on the high energy limit of bosonic open string theory

Chuan Tsung Chan, Pei Ming Ho, Jen-Chi Lee, Shunsuke Teraguchi*, Yi Yang

*此作品的通信作者

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

In previous works, ratios among four-point scattering amplitudes at the leading order in the high-energy limit were derived for the bosonic open string theory. The derivation was based on Ward identities derived from the decoupling of zero-norm states and was purely algebraic. The only assumption of the derivation was that the momentum polarization can be approximated by the longitudinal polarization at high energies. In this paper, using the decoupling of spurious states, we reduce this assumption to a much weaker one which can be easily verified by simple power counting in most cases. For the special cases which are less obvious, we verify the new assumption for an example by saddle-point approximation. We also provide a new perspective to our previous results in terms of DDF states. In particular, we show that, by using DDF states, one can easily see that there is only one independent high energy scattering amplitude for each fixed mass level.

原文English
頁(從 - 到)266-279
頁數14
期刊Nuclear Physics B
749
發行號1-3
DOIs
出版狀態Published - 14 八月 2006

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