Microscopic unitary description of tidal excitations in high-energy string-brane collisions
Microscopic unitary description of tidal excitations in high-energy string-brane collisions
复制标题
高能弦膜碰撞中潮汐激发的微观统一描述
DOI：
10.1007/jhep11(2013)126
复制
发表时间：
2013
影响因子：
5.4
通讯作者：
G. Veneziano
中科院分区：
文献类型：
--
作者：
G. D’Appollonio;P. Vecchia;R. Russo;G. Veneziano
摘要 Eikonal 算子最初被引入来描述潮汐激励对高能量下的高属弹性弦振幅的影响。在本文中，我们通过对闭合弦之间的通用非弹性转换进行显式树级计算（当闭合弦从一堆并行 Dp 膜上散开时）为该运算符提供了精确的解释。我们使用 Green-Schwarz 顶点在光锥规中执行此分析，并使用 Reggeon 顶点算子在协变形式中执行此分析。我们还详细讨论了协变弦振幅的高能行为，展示了如何以简单的方式考虑增强纵向极化质量态贡献的能量因素。
A bstractThe eikonal operator was originally introduced to describe the effect of tidal excitations on higher-genus elastic string amplitudes at high energy. In this paper we provide a precise interpretation for this operator through the explicit tree-level calculation of generic inelastic transitions between closed strings as they scatter off a stack of parallel Dp-branes. We perform this analysis both in the light-cone gauge, using the Green-Schwarz vertex, and in the covariant formalism, using the Reggeon vertex operator. We also present a detailed discussion of the high-energy behaviour of the covariant string amplitudes, showing how to take into account the energy factors that enhance the contribution of the longitudinally polarized massive states in a simple way.