Expansion-free cluster of stars in modified Gauss–Bonnet gravity

Manzoor, Rubab; Sadiq, M. Awais; Mumtaz, Saadia; Aamir, Muhammad

doi:10.1016/j.cjph.2023.08.010

Cited by 1 publication

(1 citation statement)

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“…Bhatti et al [46] worked on the modification of stellar bodies in ( ) f , T  gravity and deduced that the star compactness increases for various models of gravity. In recent research, we have explored the evolutionary mechanism of collapsing stellar objects in the presence of exotic matter, uncovering its remarkable influence on the kinematics of the system [47,48]. Consequently, it seems highly intriguing to consider the ( ) f , T  theory of gravity and explore the physical insights of stellar objects.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic stellar evolution and exotic matter

Mumtaz,

Manzoor,

Zulfiqar

et al. 2024

Phys. Scr.

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In this paper, we discuss the stability of isotropic pressureconditions for a spherically symmetric dissipative fluiddistribution in the framework of$\mathfrak{f}(\mathcal{G},\mathrm{T})$ gravity. We consider thefluid to be composed of seen and exotic matter particles. The GaussBonnect terms represent exotic matter particles. For the physicalsignificance of the pressure isotropy conditions, we transform thesystem into the hydrostatic equilibrium approximation. We observethe presence of shear, dissipative fluxes, energy densityinhomogeneities, and prominently, the exotic matter tends to abandonisotropy leading to pressure anisotropy. It is found that exoticmatter and dissipation are major factors that induce matteranisotropy in the evolving stellar system. To strengthen theresults, we also incorporate some arguments by choosing an axiallysymmetric case.

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Section: Introductionmentioning

confidence: 99%