Yazar "Cebeci, Hakan" için listeleme
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The Dirac equation in Kerr-Taub-NUT spacetime
Cebeci, Hakan; Özdemir, Nülifer (IOP Publishing LTD, 2013)We study the Dirac equation in the Kerr-Taub-NUT spacetime. We use Boyer-Lindquist coordinates and separate the resulting equations into radial and angular parts. We obtain some exact analytical solutions of the angular ... -
Exact solutions in five-dimensional axi-dilaton gravity with Euler-Poincare term
Aliev, Alikram N.; Cebeci, Hakan; Dereli, Tekin (IOP Publishing LTD, 2007)We examine the effective field equations that are obtained from the axi-dilaton gravity action with a second-order Euler-Poincare term and a cosmological constant in all higher dimensions. We solve these equations for ... -
Finite mass gravitating Yang monopoles
Cebeci, Hakan; Sarıoğlu, Özgür; Tekin, Bayram (Amer Physical Soc, 2008)We show that gravity cures the infrared divergence of the Yang monopole when a proper definition of conserved quantities in curved backgrounds is used, i.e. the gravitating Yang monopole in cosmological Einstein theory has ... -
Gravitational charges of transverse asymptotically AdS spacetimes
Cebeci, Hakan; Sarıoğlu, Özgür; Tekin, Bayram (American Physical Soc, 2006)Using Killing-Yano symmetries, we construct conserved charges of spacetimes that asymptotically approach to the flat or anti-de Sitter spaces only in certain directions. In D dimensions, this allows one to define gravitational ... -
Kerr-Taub-NUT spacetime with Maxwell and dilaton fields
Aliev, Alikram N.; Cebeci, Hakan; Dereli, Tekin (Amer Physical Soc, 2008)We present an exact solution describing a stationary and axisymmetric object with electromagnetic and dilaton fields. The solution generalizes the usual Kerr-Taub-NUT (Newman-Unti-Tamburino) spacetime in general relativity ... -
Motion of the charged test particles in Kerr-Newman-Taub-NUT spacetime and analytical solutions
Cebeci, Hakan; Özdemir, Nülifer; Sentorun, Seçil (Amer Physical Soc, 2016)In this work, we study the motion of charged test particles in Kerr-Newman-Taub-NUT spacetime. We analyze the angular and the radial parts of the orbit equations and examine the possible orbit types. We also investigate ... -
Negative mass solitons in gravity
Cebeci, Hakan; Sarıoğlu, Özgür; Tekin, Bayram (American Physical Soc, 2006)We first reconstruct the conserved (Abbott-Deser) charges in the spin-connection formalism of gravity for asymptotically (Anti)-de Sitter spaces, and then compute the masses of the AdS soliton and the recently found ... -
Plane symmetric solutions of gravitational field equations in five dimensions
Aliev, Alikram N.; Cebeci, Hakan; Dereli, Tekin (2006)We present the effective field equations obtained from a generalized gravity action with Euler-Poincaré term and a cosmological constant in a D dimensional bulk space-time. A class of plane-symmetric solutions that describe ...
