Abstract
This paper investigates the evolution of cavities for the cluster of stars in the context of extended Gauss–Bonnet gravity. We assume a spherically symmetric geometry along with locally anisotropic fluid distribution. It is assumed that the proper radial distance among neighboring stellar components stays unchanged during purely areal evolution stage. We provide some analytical solutions by using general formulism in gravitation theory. The thick-shells cavities at one or both boundary surfaces are found to satisfy the Darmois conditions. Moreover, we also investigate the physical behavior of cavity models by considering the stellar , and . We conclude that the dark matter has a strong impact on the evolution of cavities in the cluster of stars.
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