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arXiv 2111.09441hep-thhep-ph
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具有磁场的引力背景下悬弦的混沌动力学

Chaotic dynamics of a suspended string in a gravitational background with magnetic field

Pietro Colangelo, Floriana Giannuzzi, Nicola Losacco

摘要:

研究了磁场对端点位于渐近AdS $_5$空间和黑洞边界上的弦的混沌动力学的影响.我们研究庞加莱截面和计算的李雅普诺夫指数的字符串从静态配置扰动,对于两个不同的方向,与边界上的端点的位置正交和平行的磁场。我们发现,磁场稳定的弦动力学,最大的李雅普诺夫指数保持低于Maldacena-Shenker-Stanford界限。

英文摘要:

We study the effects of a magnetic field on the chaotic dynamics of a string with endpoints on the boundary of an asymptotically AdS$_5$ space with black hole. We study Poincaré sections and compute the Lyapunov exponents for the string perturbed from the static configuration, for two different orientations, with position of the endpoints on the boundary orthogonal and parallel to the magnetic field. We find that the magnetic field stabilizes the string dynamics, with the largest Lyapunov exponent remaining below the Maldacena-Shenker-Stanford bound.

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