Browsing 08 Faculty of Arts and Sciences by Subject "theoretical physics"

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Canonical Acoustic Thin-Shell Wormholes

Jusufi, Kimet; Övgün, Ali (World Scientific Publishing Co Pte Ltd, 2017-02-16)

In this paper, we model a canonical acoustic thin-shell wormhole (CATSW) in the framework of analogue gravity systems. In this model, we apply cut and paste technique to join together two spherically symmetric, analogue ...
Inflation and Acceleration of the Universe by Nonlinear Magnetic Monopole Fields

Övgün, Ali (Springer, 2017-02-16)

Despite impressive phenomenological success, cosmological models are incomplete without an understanding of what happened at the big bang singularity. Maxwell electrodynamics, considered as a source of the classical Einstein ...
A particular thin-shell wormhole

Sakallı, İzzet; Övgün, Ali (Springer, 2017-02-09)

Using a black hole with scalar hair, we construct a scalar thin-shell wormhole (TSW) in 2+1 dimensions by applying the Visser cut and paste technique. The surface stress, which is concentrated at the wormhole throat, is ...