研究f(R)重力下的广义多向紧致物体

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

The European Physical Journal C Pub Date : 2025-03-13 DOI:10.1140/epjc/s10052-025-13950-3

A. Zahra, S. A. Mardan, Muhammad Bilal Riaz, Tomas Kozubek

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引用次数: 0

摘要

本文研究了f(R)重力下球面对称的实际各向异性物质构型。利用Starobinsky模型求解了PSR J0740+6620、PSR J0348+0432和4U 1608-52的多向态方程。通过图形说明了密度、压力和各向异性等物理参数的分析，并通过能量和因果关系条件研究了致密物体的稳定性。我们还将讨论引力、流体静力和各向异性力、引力红移和绝热指数的行为。图形表示在理论和天体物理尺度上展示了具有现实价值的f(R)引力模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigating generalized polytropic compact objects in f(R) gravity

This paper investigates realistic anisotropic matter configurations for spherical symmetry in f(R) gravity. The solutions obtained from Starobinsky model are used to determine the behavior of PSR J0740+6620, PSR J0348+0432 and 4U 1608-52 with polytropic equation of state. Analysis of physical parameters such as density, pressure, and anisotropy is illustrated through graphs, and the stability of compact objects is investigated by energy and causality conditions. We will also discuss the behavior of gravitational, hydrostatic and anisotropic forces, gravitational redshift and adiabatic index. The graphical representations demonstrate the realistic valuable f(R) gravity models at the theoretical and astrophysical scales.

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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.