Work

Anisotropic fluid dynamics with vanishing complexity and expansion-free constraints: Exploring analytical solutions in charged modified gravity

Year: 2025

Type: article

Abstract: In this paper, we study non-static spherically symmetric shear-free anisotropic dissipative fluid distribution coupled with Maxwell field equations to find the solutions for dynamical equations Herrera et al. (2023) in f ( R ) gravity and use a physically realistic model, i.e., f ( R ) = R + δ R 2 , where R represents the Ricci scalar. We compute gravitational mass (Misner–Sharp) to explore matching conditions. We also construct conservation equations for ordinary, effective dark source terms and electromagnetic stress–energy tensors using Bianchi identities in f ( R ) gravity. Further, we utilize constraints like vanishing expansion scalar and complexity factor to derive exact analytical solutions for gravitational equations in f ( R ) gravity.

Source: Physics of the Dark Universe

DOI: 10.1016/j.dark.2025.101858

Authors: Guangjun Nan, I. Sabir, B. Almutairi, M.Z. Bhatti, Z. Yousaf

Institutions: Zhejiang Normal University, University of the Punjab, King Saud University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,660

Funders: King Saud University, Deanship of Scientific Research, King Saud University