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Browsing Department of Physics by Author "Sakallı, İzzet"

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Black hole radiation of massive spin-2 particles in (3+1) dimensions

Sakallı, İzzet; Övgün, Ali (Springer, 2016-06-03)

This paper is devoted to the study of radiation of massive spin-2 boson (graviton with a nonzero mass) through the event horizon of a generic static and spherically symmetric black hole in (3+1) dimensions. To this end, ...
Chaos in electrovac and non-Abelian plane wave spacetimes

Sakallı, İzzet; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2006)

Superposed electrovac pp-waves causes chaos. To show this, we project the particle geodesics onto the (x,y) plane and simulate the phase space’s Poincaré section numerically. Similar considerations apply, with minor ...
Chaos in Kundt type III Spacetimes

Sakallı, İzzet; Halilsoy, Mustafa (Chinese Physics Letters, Institute of Physics (IOP) Publishing, 2011)

We consider geodesics motion in a particular Kundt type III spacetime in which Einstein-Yang-Mills equations admit solutions. On a particular surface as constraint we project the geodesics into the (x,y) plane and treat ...
Collision of Electromagnetic Shock Waves Coupled with Axion Waves: An Example

Halilsoy, Mustafa; Sakallı, İzzet (Classical and Quantum Gravity, Institute of Physics (IOP) Publishing, 2003)

We present an exact solution that describes collision of electromagnetic shock waves coupled with axion plane waves. The axion has a rather special coupling to the cross polarization term of the metric. The initial data ...
Cosmic Strings Coupled With a Massless Scalar Field

Gürtuğ, Özay; Sakallı, İzzet (International Journal of Theoretical Physics, Springer, 2003)

A scalar field generalization of Xanthopoulos's cylindrically symmetric solutions of the vacuum Einstein equation is obtained. The obtained solution preserves the properties of the Xanthopoulos solution, which are regular ...
Dilatonic Entropic Force

Sakallı, İzzet (International Journal of Theoretical Physics, Springer, 2011)

We show in detail that the entropic force of the static spherically symmetric spacetimes with unusual asymptotics can be calculated through the Verlinde's arguments. We introduce three different holographic screen candidates, ...
Dilatonic interpolation between Reissner-Nordstrom and Bertotti-Robinson spacetimes with physical consequences

Mazharimousavi, S. Habib; Halilsoy, Mustafa; Sakallı, İzzet; Gürtuğ, Özay (Classical and Quantum Gravity, Institute of Physics (IOP) Publishing, 2010)

We give a general class of static, spherically symmetric, non-asymptotically flat and asymptotically non-(anti) de Sitter black hole solutions in Einstein-Maxwell-Dilaton (EMD) theory of gravity in 4-dimensions. In this ...
Effect of the Born-Infeld Parameter in higher dimensional Hawking radiation

Mazharimousavi, S. Habib; Sakallı, İzzet; Halilsoy, Mustafa (Physics Letters B, Elsevier, 2009)

We show in detail that the Hawking temperature calculated from the surface gravity is in agreement with the result of exact semi-classical radiation spectrum for higher dimensional linear dilaton black holes in various ...
Effect of the cosmological constant in the Hawking radiation of 3D charged dilaton black hole

Sakallı, İzzet (Astrophysics and Space Science, Springer, 2012)

This paper deals with the semiclassical radiation spectrum of static and circularly symmetric 3D charged dilaton black holes with cosmological constant {\Lambda} in non-asymptotically flat spacetimes. We first review the ...
Effect of the Refractive Index on the Hawking Temperature: An Application of the Hamilton-Jacobi Method

Sakallı, İzzet; Mirekhtiary, Seyedeh Fatemeh (Journal of Experimental and Theoretical Physics (JETP), Springer, 2013)

Hawking radiation of a non-asymptotically flat (NAF) 4-dimensional spherically symmetric and static dilatonic black hole (BH) via the Hamilton-Jacobi (HJ) method has been studied. In addition to the naive coordinates, we ...
Entropy Conservation of Linear Dilaton Black Holes in Quantum Corrected Hawking Radiation

Sakallı, İzzet; Paşaoğlu, Hale; Halilsoy, Mustafa (International Journal of Theoretical Physics, Springer, 2011)

It has been shown recently that information is lost in the Hawking radiation of the linear dilaton black holes in various theories when applying the tunneling formulism without considering quantum gravity effects. In this ...
Exact solutions to a massive charged scalar field equation in the magnetically charged stringy black hole geometry and Hawking radiation

Sakallı, İzzet; Al-Badawi, Ahmad (Canadian Journal of Physics, NRC Research Press, 2009)

Exact solutions of a massive complex scalar field equation in the geometry of a Garfinkle-Horowitz-Strominger (stringy) black hole with magnetic charge is explored. The separated radial and angular parts of the wave equation ...
Fading Hawking Radiation

Sakallı, İzzet; Halilsoy, Mustafa; Paşaoğlu, Hale (Astrophysics and Space Science, Springer, 2012)

In this study, we explore a particular type Hawking radiation which ends with zero temperature and entropy. The appropriate black holes for this purpose are the linear dilaton black holes. In addition to the black hole ...
Geodesics of Linear Dilaton Black Holes

Hamo, Alan Hameed Hussein (Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2014-08)

In this thesis, we investigate the geodesics of the 4-dimensional (4D) linear dilaton black hole (LDBH), which is an exact solution to the Einstein-Maxwell-Dilaton (EMD) theory. These spacetimes have non-asymptotically ...
Greybody Factors of 2+1 Dimensional Charged Black Hole With Dilaton Field

Talib, Shakhawan Rafiq Hama (Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2016-02)

In this thesis, we analytically study the scalar perturbation of non-asymptotically flat 2+1 dimensional charged dilaton black holes. In particular, we show that radial wave equation is solved in terms of the hypergeometric ...
GUP Assisted Hawking Radiation of Rotating Acoustic Black Holes

Sakallı, İzzet; Övgün, Ali; Kimet, Jusufi (Springer, 2016-09-13)

Recent studies (Steinhauer in Nat. Phys. 10:864, 2014, Phys. Rev. D 92:024043, 2015) provide compelling evidences that Hawking radiation could be experimentally proven by using an analogue black hole. In this paper, taking ...
Hawking Radiation of Grumiller Black Hole

Mirekhtiary, Seyedeh Fatemeh; Sakallı, İzzet (Communications in Theoretical Physics, Institute of Physics (IOP) Publishing, 2014)

In this paper, we consider the relativistic Hamilton-Jacobi (HJ) equation and study the Hawking radiation (HR) of scalar particles from uncharged Grumiller black hole (GBH) which is affordable for testing in astrophysics. ...
Hawking Radiation of Linear Dilaton Black Holes in Various Theories

Paşaoğlu, Hale; Sakallı, İzzet (International Journal of Theoretical Physics, Springer, 2009)

Using the Damour-Ruffini-Sannan, the Parikh-Wilczek and the thin film brick-wall models, we investigate the Hawking radiation of uncharged massive particles from 4-dimensional linear dilaton black holes, which are the ...
Hawking Radiation of Mass Generating Particles From Dyonic Reissner Nordström Black Hole

Sakallı, İzzet; Övgün, Ali (Springer, 2016-08-20)

The Hawking radiation is considered as a quantum tunneling process, which can be studied in the framework of the Hamilton–Jacobi method. In this study, we present the wave equation for a mass generating massive and charged ...
Hawking Radiation of Spin-1 Particles from a Three-Dimensional Rotating Hairy Black Hole

Sakallı, İzzet; Övgün, Ali (Journal of Experimental and Theoretical Physics, 2015-09-27)

We study the Hawking radiation of spin-1 particles (so-called vector particles) from a three-dimensional rotating black hole with scalar hair using a Hamilton–Jacobi ansatz. Using the Proca equation in the WKB approximation, ...