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arXiv 2106.09644gr-qc
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大质量Brans-Dicke引力中动力圆柱的复杂性分析

Complexity Analysis of Dynamical Cylinder in Massive Brans-Dicke Gravity

M. Sharif, Amal Majid

摘要:

本文在大质量Brans-Dicke理论的框架下,设计了一个非静态圆柱系统的复杂性因子。复杂性的定义是通过考虑基本的物理特性(如各向异性,不均匀性等)而发展起来的。该系统为了确定自引力物体的复杂因子,我们从黎曼张量的正交分裂中获得了结构标量。此外,我们还讨论了在有质量标量场作用下的两种演化模式,并选择了同系模作为最简单的演化模式。我们导出的解决方案,以及存在散热的特定形式的标量场。在一个最初的复杂性自由系统的因素,诱导复杂性也检查。结果表明,大质量标量场和热耗散是导致天体系统复杂性的重要原因。因此,与其静态对应物相比,动态圆柱体更复杂。

英文摘要:

In this paper, a complexity factor is devised for a non-static cylindrical system in the framework of massive Brans-Dicke theory. The definition of complexity is developed by taking into account the essential physical characteristics (such as anisotropy, inhomogeneity, etc.) of the system. In order to determine the complexity factor of the self-gravitating object, we acquire structure scalars from the orthogonal splitting of the Riemann tensor. Moreover, we discuss two patterns of evolution and choose the homologous mode as the simplest pattern under the influence of massive scalar field. We derive solutions in the absence as well as presence of heat dissipation for a specific form of the scalar field. The factors that induce complexity in an initially complexity-free system are also examined. It is concluded that the massive scalar field as well as heat dissipation contribute to the complexity of the celestial system. Thus, a dynamical cylinder is more complex as compared to its static counterpart.

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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