ModMax AdS黑洞的Lyapunov指数、相变和混沌界

IF 4.8 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-10-19 DOI:10.1140/epjc/s10052-025-14920-5

Gorima Bezboruah, Mozib Bin Awal, Prabwal Phukon

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引用次数: 0

摘要

利用无质量粒子和大质量粒子在不稳定圆轨道上的Lyapunov指数研究了ModMax反德西特（AdS）黑洞的热力学相变。我们的结果表明，李雅普诺夫指数的热剖面可以作为黑洞相结构的有效探针。我们计算了李雅普诺夫指数在整个跃迁中的不连续，并表明它作为一个序参数，在临界点附近显示出一个临界指数\(\delta =1/2\)。进一步，我们探讨了混沌界的违反，发现当视界半径低于阈值时，混沌界被违反。我们还研究了ModMax参数和粒子的角动量如何改变这一阈值，揭示了它们在控制混沌界违背的发生中的作用。

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Lyapunov exponents, phase transitions, and Chaos bound of ModMax AdS black holes

We study the thermodynamic phase transition of ModMax anti-de Sitter (AdS) black holes using Lyapunov exponents of massless and massive particles in unstable circular orbits. Our results demonstrate that the thermal profile of the Lyapunov exponent serves as an efficient probe of the black hole’s phase structure. We calculate the discontinuity in the Lyapunov exponent across the transition and show that it acts as an order parameter, exhibiting a critical exponent \(\delta =1/2\) in the vicinity of the critical point. Furthermore, we explore the violation of the chaos bound, finding that the bound is violated when the horizon radius falls below a threshold value. We also examine how the ModMax parameter and the particle’s angular momentum modify this threshold, revealing their role in controlling the onset of chaos bound violation.

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.