Electromagnetic extension of Buchdahl bound in f(R,T) gravity

2023/11/06 by Bhattacharya, Soumik, Sharma, Ranjan, Maharaj, Sunil D. · 2 citations
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)

paper · doi:10.48550/arxiv.2311.02915

Abstract

We develop a static charged stellar model in f(R,T) gravity where the modification is assumed to be linear in T which is the trace of the energy momentum tensor. The exterior spacetime of the charged object is described by the Reissner-Nordström metric. The interior solution is obtained by invoking the Buchdahl-Vaidya-Tikekar ansatz, for the metric potential g_rr, which has a clear geometric interpretation. A detailed physical analysis of the model clearly shows distinct physical features of the resulting stellar configuration under such a modification. We find the maximum compactness bound for such a class of compact stars which is a generalization of the Buchdahl bound for a charged sphere described in f(R,T) gravity. Our result shows physical behaviour that is distinct from general relativity.

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