f(Q)引力中奇异夸克物质和幻影状广义查普里金气体支持的虫洞几何学

IF 5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Physics of the Dark Universe Pub Date : 2024-08-12 DOI:10.1016/j.dark.2024.101620
Sneha Pradhan, Zinnat Hassan, P.K. Sahoo
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引用次数: 0

摘要

虫洞(WH)物理学的一个重要方面是包含奇异物质,这需要违反空能条件。在这里,我们探讨了在对称远平行引力下,夸克物质在极端密度条件下与幽灵般的广义宇宙查普利金气体(GCCG)一起维持虫洞的可能性。对重子结构的理论和实验研究表明,由 u(上)、d(下)和 s(奇异)夸克组成的奇异夸克物质是重子物质中能量效率最高的形式。根据这些理论见解,我们使用麻省理工学院(MIT)的袋模型状态方程来描述普通夸克物质。通过制定袋参数的具体配置,我们建立了几个与各向同性和各向异性的不同形状函数相对应的 WH 模型。我们的分析强烈表明,各向同性的 WH 在理论上是不可能的。此外,我们还研究了利用类似幽灵的 GCCG 的可穿越 WH 解决方案,并检验了其可行性。这种能够违反空能量条件的状态方程可以通过各种有利参数来阐明晚期宇宙加速。在这个框架中,我们推导出了恒定和可变红移函数的 WH 解。在这两项研究中,我们都采用了体积积分量化法(VIQ)来评估外来物质的数量。此外,我们还通过托尔曼-奥本海默-沃尔科夫(Tolman-Oppenheimer-Volkoff,TOV)方程进行了平衡分析,从而支持了我们构建的 WH 模型的可行性。
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Wormhole geometries supported by strange quark matter and phantom-like generalized Chaplygin gas within f(Q) gravity

A crucial aspect of wormhole (WH) physics is the inclusion of exotic matter, which requires violating the null energy condition. Here, we explore the potential for WHs to be sustained by quark matter under conditions of extreme density along with the phantom-like generalized cosmic Chaplygin gas (GCCG) in symmetric teleparallel gravity. Theoretical and experimental studies on baryon structures indicate that strange quark matter, composed of u (up), d (down), and s (strange) quarks, represents the most energy-efficient form of baryonic matter. Drawing from these theoretical insights, we use the Massachusetts Institute of Technology (MIT) bag model equation of state to characterize ordinary quark matter. By formulating specific configurations for the bag parameter, we develop several WH models corresponding to different shape functions for the isotropic and anisotropic cases. Our analysis strongly suggests that an isotropic WH is not theoretically possible. Furthermore, we investigate traversable WH solutions utilizing a phantom-like GCCG, examining their feasibility. This equation of state, capable of violating the null energy condition, can elucidate late-time cosmic acceleration through various beneficial parameters. In this framework, we derive WH solutions for both constant and variable redshift functions. We have employed the volume integral quantifier (VIQ) method for both studies to assess the quantity of exotic matter. Furthermore, we have done the equilibrium analysis through the Tolman–Oppenheimer–Volkoff (TOV) equation, which supports the viability of our constructed WH model.

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来源期刊
Physics of the Dark Universe
Physics of the Dark Universe ASTRONOMY & ASTROPHYSICS-
CiteScore
9.60
自引率
7.30%
发文量
118
审稿时长
61 days
期刊介绍: Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact. The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.
期刊最新文献
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