Work

Certain Restrictions of Energy–Momentum Tensor in Bulk Viscous Fluid String Spacetimes

Year: 2026

Type: article

Abstract: The aim of this paper is to characterize a relativistic bulk viscous fluid string spacetime whose energy–momentum tensor satisfying certain geometric symmetries. At first, it is shown that a relativistic bulk viscous fluid string spacetime is a generalized quasi-Einstein manifold. Then, we characterize such a spacetime, satisfying Codazzi type of energy–momentum tensor (denoted by T⊘), covariant constant T⊘, recurrent and generalized recurrent T⊘, and almost pseudo-symmetric and weakly symmetric T⊘, respectively. Next, we consider quadratic Killing T⊘ in such a spacetime. Finally, we provide a concrete example using partial differential equations.

Source: Axioms

DOI: 10.3390/axioms15060461

Authors: Sunil Kumar Yadav, Uday Chand De, Mohammad Nazrul Islam Khan

Institutions: University of Calcutta, Qassim University

Language: English

Topic: Advanced Differential Geometry Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Qassim University