Variation of speed of sound with radius.

Variation of speed of sound with radius.

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It is known that the standard Schwarzschild interior metric is conformally flat and generates a constant density sphere in any spacetime dimension in Einstein and Einstein-Gauss-Bonnet (EGB) gravity. This motivates the questions: in EGB does the conformal flatness criterion yield the Schwarzschild metric? Does the assumption of constant density gen...

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... For a study of the physical features in stellar models it is necessary to find exact solutions to the EGB field equations. Particular classes of exact solutions in static metrics have been found mainly in five and six spacetime dimensions [30][31][32][33][34][35] for neutral matter distributions with isotropic pressure. Other interesting models have been studied by [36][37][38][39]. ...
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... Moreover, some models related to compact objects have been studied in Refs. [27][28][29][30][31]. ...
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