International Journal of Geometric Methods in Modern Physics ( IF 2.1 ) Pub Date : 2024-05-04 , DOI: 10.1142/s0219887824501986 Ghulam Fatima 1 , Faisal Javed 1 , Arfa Waseem 2 , Ghulam Mustafa 1 , Fairouz Tchier 3
The development and stability of acoustic thin-shell wormholes (WHs) within the context of acoustic black holes are examined in this paper. Utilizing linearized radial perturbations, the stability of these WHs is examined. In this study, a variety of equations of state are taken into account, including barotropic, variable Chaplygin, and phantom-like equations of state. According to the findings, the acoustic black hole structure has an unstable configuration for barotropic fluid. However, as the parameter gets closer to zero, it does not show any stable or unstable configurations at the event horizon position. For higher values of and , the resulting structure for the phantom-like variable equation of state (EoS) displays stable behavior away from the horizon while presenting unstable configurations close to the event horizon. The possibility of a stable structure rises as is increased. Additionally, the constructed structure exhibits stable behavior for under extreme acoustic black holes, whereas thin-shell topologies demonstrate unstable behavior outside the event horizon for the generalized Chaplygin variable EoS. However, the structure stabilizes for at higher values of . The stability of acoustic thin-shell WHs is higher than that of Schwarzschild thin-shell WHs for smaller values of , indicating that the acoustic black hole parameter greatly influences the stable configurations of thin-shell WHs.
中文翻译:
不同类型物质分布的声学薄壳虫洞研究
本文研究了声学黑洞背景下声学薄壳虫洞(WH)的发展和稳定性。利用线性化径向扰动,检查了这些白线的稳定性。在本研究中,考虑了各种状态方程,包括正压状态方程、变量 Chaplygin 状态方程和类幻影状态方程。根据研究结果,声学黑洞结构对于正压流体具有不稳定的构型。然而,作为参数接近于零,它在事件视界位置没有显示任何稳定或不稳定的配置。对于更高的值和,由此产生的幻影变量状态方程 (EoS) 的结构在远离视界时表现出稳定的行为,而在靠近事件视界时呈现出不稳定的配置。稳定结构的可能性随着增加了。此外,所构建的结构表现出稳定的行为在极端声学黑洞下,而薄壳拓扑在广义 Chaplygin 变量 EoS 的事件视界之外表现出不稳定的行为。然而,该结构稳定在较高的值。对于较小的值,声学薄壳WH的稳定性高于史瓦西薄壳WH的稳定性,表明声学黑洞参数对薄壳白空的稳定构型影响很大。