Isotropic compact stars in 4D Einstein-Gauss-Bonnet gravity

Abstract

Recently it has been proposed that the Gauss-Bonnet coupling parameter of Lovelock gravity may suitably be rescaled in order to admit physically viable models of celestial phenomena such that higher curvature effects are active in standard four dimensions as opposed to the usual higher dimensions. We investigate the consequences of this modification in the context of stellar modelling. The evolution of perfect fluid distributions is governed by the pressure isotropy condition and through stipulation of one of the metric potentials complete models emerge from solutions of the master differential equation. New classes of exact solution with this approach have been reported. One particular model is analysed in detail and shown to comport with elementary physical requirements demanded of realistic compact stars suggesting that the modified theory is not inconsistent with observations.

19 pages, 9 figures, accepted for publication in Class.Quant.Grav

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Cited by in corpus (7)

• The 4D Einstein-Gauss-Bonnet Theory of Gravity: A Review
• Black Holes in the Scalar-Tensor Formulation of 4D Einstein-Gauss-Bonnet Gravity: Uniqueness of Solutions, and a New Candidate for Dark Matter
• Quark stars with a unified interacting equation of state in regularized 4D Einstein-Gauss-Bonnet gravity
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• Properties of relativistic star in 5-D Einstein-Gauss-Bonnet gravity