Anisotropic Strange Quintessence Stars in Modified f(R, ϕ) Theory of Gravity

IF 2.1 3区物理与天体物理 Q2 PHYSICS, MATHEMATICAL

International Journal of Geometric Methods in Modern Physics Pub Date : 2023-11-07 DOI:10.1142/s0219887824400036

Adnan Malik, Tayyaba Naz, Ayesha Tariq, Z. Yousaf, Ali H. Alkhaldi, M. Umair Shahzad

引用次数: 0

Abstract

This paper investigated the anisotropic quintessence stars in the [Formula: see text] theory of gravity, where [Formula: see text] is the Ricci scalar and [Formula: see text] is the scalar potential. We investigated the field equations of the [Formula: see text] theory of gravity by using the Krori–Barua technique. We have determined that all the obtained solutions are free from central singularity and potentially stable. The observed values of mass and radius of the different strange stars Her X1, SAXJ1808.4-3658, and 4U1820-30 have been used to calculate the values of unknown constants in the Krori and Barua metric. The physical phenomena of stars, such as energy density, pressure components, anisotropy, sound speeds, equation of state parameters, energy conditions and redshift have been investigated in detail.

查看原文本刊更多论文

修正f(R， φ)引力理论中的各向异性奇异精星

本文研究了[公式:见文]引力理论中的各向异性精星，其中[公式:见文]为里奇标量，[公式:见文]为标量势。我们用Krori-Barua技术研究了引力理论的场方程。我们已经确定所有得到的解都不存在中心奇点，并且具有潜在的稳定性。利用不同奇异恒星Her X1、SAXJ1808.4-3658和4U1820-30的质量和半径观测值，计算了Krori和Barua度规中的未知常数值。详细研究了恒星的能量密度、压力分量、各向异性、声速、状态参数方程、能量条件和红移等物理现象。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Geometric Methods in Modern Physics 物理-物理：数学物理

CiteScore

3.40

自引率

22.20%

发文量

274

审稿时长

6 months

期刊介绍： This journal publishes short communications, research and review articles devoted to all applications of geometric methods (including commutative and non-commutative Differential Geometry, Riemannian Geometry, Finsler Geometry, Complex Geometry, Lie Groups and Lie Algebras, Bundle Theory, Homology an Cohomology, Algebraic Geometry, Global Analysis, Category Theory, Operator Algebra and Topology) in all fields of Mathematical and Theoretical Physics, including in particular: Classical Mechanics (Lagrangian, Hamiltonian, Poisson formulations); Quantum Mechanics (also semi-classical approximations); Hamiltonian Systems of ODE''s and PDE''s and Integrability; Variational Structures of Physics and Conservation Laws; Thermodynamics of Systems and Continua (also Quantum Thermodynamics and Statistical Physics); General Relativity and other Geometric Theories of Gravitation; geometric models for Particle Physics; Supergravity and Supersymmetric Field Theories; Classical and Quantum Field Theory (also quantization over curved backgrounds); Gauge Theories; Topological Field Theories; Strings, Branes and Extended Objects Theory; Holography; Quantum Gravity, Loop Quantum Gravity and Quantum Cosmology; applications of Quantum Groups; Quantum Computation; Control Theory; Geometry of Chaos.