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arXiv 0804.2863hep-th
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几何快子的起源

Origin of the geometric tachyon

Ashok Das, Sudhakar Panda, Shibaji Roy

摘要:

本文将一个Dp-膜在一叠重合NS 5-膜背景中的运动分析为一个相对论性点粒子在5-膜横向空间中的运动。在这个系统中,粒子经历一个正交于它的固有速度的固有加速度,由于背景场的作用,它改变了简单测地线运动的动力学。特别是,我们表明,在附近的五膜,这是负责修改的径向模式的运动,导致快子不稳定的倒简谐振子的加速度。

英文摘要:

The motion of a Dp-brane in the background of a stack of coincident NS5-branes is analysed as the motion of a relativistic point particle in the transverse space of the five-branes. In this system, the particle experiences a proper acceleration orthogonal to its proper velocity due to the background dilaton field which changes the dynamics from that of a simple geodesic motion. In particular, we show that in the vicinity of the five-branes, it is this acceleration which is responsible for modifying the motion of the radial mode to that of an inverted simple harmonic oscillator leading to the tachyonic instability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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