Browsing Department of Physics by Author "Övgün, Ali"

EMU I-REP

Browsing Department of Physics by Author "Övgün, Ali"

Sort by: Order: Results:

  • Particle Collision near 1+1-D Horava-Lifshitz Black Holes 
    Halilsoy, Mustafa; Övgün, Ali (2016-01-07)
  • 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 ...
  • Quantum Tunneling and Hartman Effect 
    Övgün, Ali (Izmir Institute of Technology - İzmir Yüksek Teknoloji Enstitüsü, 2010)
    Thıs is my undergraduate thesis. So far I have worked on tunneling and its classi-cal, semi-classical and quantum description, then I looked some unsolved problems . Ihave learned about Hartman e ect , ...
  • Quantum tunneling of massive spin-1 particles from non-stationary metrics 
    Sakallı, İzzet; Övgün, Ali (General Relativity and Gravitation, Springer, 2015-11-15)
    We focus on the HR of massive vector (spin-1) particles tunneling from Schwarzschild BH expressed in the Kruskal–Szekeres and dynamic Lemaitre coordinates. Using the Proca equation together with the Hamilton–Jacobi and ...
  • Rotating Thin-Shell Wormhole 
    Övgün, Ali (SpringerLink, 2016-11-08)
    We construct a rotating thin-shell wormhole using a Myers-Perry black hole in five dimensions, using the Darmois-Israel junction conditions. The stability of the wormhole is analyzed under perturbations. We find that exotic ...
  • Studies on Thin-shells and Thin-shell Wormholes 
    Övgün, Ali (Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2016-06)
    The study of traversable wormholes is very hot topic for the past 30 years. One of the best possible way to make traversable wormhole is using the thin-shells to cut and paste two spacetime which has tunnel from one ...
  • Thin-shell wormholes from the regular Hayward black hole 
    Halilsoy, Mustafa; Övgün, Ali; Mazharimousavi, S. Habib (The European Physical Journal C, Springer, 2014-03-13)
    We revisit the regular black hole found by Hayward in 4 -dimensional static, spherically symmetric spacetime. To find a possible source for such a spacetime we resort to the nonlinear electrodynamics in general relativity. ...
  • Thin-shell wormholes from the regular Hayward black hole 
    Övgün, Ali (2016-01-07)
  • Tunneling of Massive Vector Particles From Rotating Charged Black Strings 
    Jusufi, Kimet; Övgün, Ali (Springer, 2016-06-02)
    We study the quantum tunneling of charged massive vector bosons from a charged static and a rotating black string. We apply the standard methods, first we use the WKB approximation and the Hamilton-Jacobi equation, and ...
  • Tunnelling of vector particles from Lorentzian wormholes in 3+1 dimensions 
    Sakallı, İzzet; Övgün, Ali (THE EUROPEAN PHYSICAL JOURNAL PLUS, Springer, 2015-06-11)
    In this article, we consider the Hawking radiation (HR) of vector (massive spin-1) particles from the traversable Lorentzian wormholes (TLWH) in 3+1 dimensions. We start by providing the Proca equations for the TLWH. ...
  • Uninformed Hawking radiation 
    Sakallı, İzzet; Övgün, Ali (EPL, IOP Publishing (Institute of Physics), 2015-04-24)
    We show in detail that the Parikh-Wilczek tunneling method (PWTM), which was designed for resolving the information loss problem in Hawking radiation (HR) fails whenever the radiation occurs from an isothermal process. ...