physics.gen-ph

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# Title: Hawking's universe as an evolving dark wormhole

Authors: Ali Övgün
Abstract: To understand the nature of the universe, we extend the study of cosmological model first studied by Sung-Won Kim [Phys. Rev D {\bf 53}, 6889 (1996)], using dark matter and dark energy within a Lorentzian wormhole. The important of this work is that the matter has two components: cosmological part (only time dependent) and wormhole part (only space dependent). To do so, we use the Chaplygin gas as an equation of state for cosmic part $\tau_c=-\frac{\alpha}{\rho_{c}^\beta}$ and Navarro-Frenk-White density profile for a dark matter to form dark wormhole. We reveal more interesting result that evolving dark wormhole causes the inflation in the early universe and then wormhole is vanished. Moreover, the other interesting feature of this result is that scale factor has both real and imaginary parts, which get along well with Hawking's recent paper [arXiv:1707.07702 ].
 Comments: 6 pages, two column Subjects: General Physics (physics.gen-ph) Cite as: arXiv:1803.04256 [physics.gen-ph] (or arXiv:1803.04256v1 [physics.gen-ph] for this version)

## Submission history

From: Ali Övgün Dr. [view email]
[v1] Wed, 7 Mar 2018 23:35:45 GMT (1093kb,D)