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arXiv · 2303.16789

The equilibrium condition in gravitational collapse and its application to a cosmological scenario

Dipanjan Dey·N. T. Layden·A. A. Coley·Pankaj S. Joshi
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Abstract

We discuss the equilibrium conditions of the gravitational collapse of a spherically symmetric matter cloud. We analyze the spinor structure of a general collapsing space-time and redefine the equilibrium conditions by using Cartan scalars. We qualitatively investigate the equilibrium configuration of a two-fluid system consisting of a dust-like fluid and a fluid with a negative equation of state. We use our results to investigate certain cosmological scenarios where dark energy can cluster inside the over-dense regions of dark matter and together reaches a stable configuration. We compare the outcomes of our work with existing work where the virialization technique is used to stabilize the two-fluid system.

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Dipanjan Dey, N. T. Layden, A. A. Coley, Pankaj S. Joshi. 2023-03-29. The equilibrium condition in gravitational collapse and its application to a cosmological scenario. https://arxiv.org/abs/2303.16789

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