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pro vyhledávání: '"Hortacsu, M."'
Autor:
Hortaçsu, M.
Publikováno v:
First form was published in Journal of Physics: Conference Series Volume 2191 (2022)
Here we continue studying the Wahlquist metric. We know that the wave equation written for a zero mass scalar particle in the background of this metric gives Heun type solutions. To be able to use the existing literature on Heun functions, we try to
Externí odkaz:
http://arxiv.org/abs/2108.11190
Autor:
Birkandan, T., Hortacsu, M.
Publikováno v:
Eur. Phys. J. C 81, 389 (2021)
We study the solutions of the wave equation where a massless scalar field is coupled to the Wahlquist metric, a type-D solution. We first take the full metric and then write simplifications of the metric by taking some of the constants in the metric
Externí odkaz:
http://arxiv.org/abs/2012.07352
Autor:
Hortacsu, M.
We use Heun type solutions given in \cite{Suzuki} for the radial Teukolsky equation, written in the background metric of the Kerr-Newman-de Sitter geometry, to calculate the quasinormal frequencies for polynomial solutions and the reflection coeffici
Externí odkaz:
http://arxiv.org/abs/2004.09132
Autor:
Hortacsu, M.
We continue studying the zero mass limit of the Kerr- (Anti) de Sitter space-times by investigating the possibility of special values of the frequencies to have polynomial solutions for the radial wave equation, compute reflection coefficient for wav
Externí odkaz:
http://arxiv.org/abs/1812.11715
Autor:
Birkandan, T., Hortaçsu, M.
Publikováno v:
Gen Relativ Gravit (2018) 50: 28
Heun-type exact solutions emerge for both the radial and the angular equations for the case of a scalar particle coupled to the zero mass limit of both the Kerr and Kerr-(anti)de-Sitter spacetime. Since any type D metric has Heun-type solutions, it i
Externí odkaz:
http://arxiv.org/abs/1711.06811
Autor:
Birkandan, T., Hortaçsu, M.
Publikováno v:
Europhys.Lett. 119 (2017) no.2, 20002
We find confluent Heun solutions to the radial equations of two Halilsoy-Badawi metrics. For the first metric, we studied the radial part of the massless Dirac equation and for the second case, we studied the radial part of the massless Klein-Gordon
Externí odkaz:
http://arxiv.org/abs/1704.00294
Publikováno v:
Annals of Physics, 393:132-144 (2018)
We couple a conformal scalar field in (2+1) dimensions to Einstein gravity with torsion. The field equations are obtained by a variational principle. We could not solve the Einstein and Cartan equations analytically. These equations are solved numeri
Externí odkaz:
http://arxiv.org/abs/1611.07496
Autor:
Birkandan, T., Hortaçsu, M.
Publikováno v:
Reports on Mathematical Physics 79(1), 81 (2017)
After a brief introduction to Heun type functions we note that the actual solutions of the eigenvalue equation emerging in the calculation of the one loop contribution to QCD from the Belavin-Polyakov-Schwarz-Tyupkin instanton and the similar calcula
Externí odkaz:
http://arxiv.org/abs/1605.07848
Autor:
Hortacsu, M.
Publikováno v:
Adv.High Energy Phys. 2018 (2018) 8621573
Most of the theoretical physics known today is described by using a small number of differential equations. For linear systems, different forms of the hypergeometric or the confluent hypergeometric equations often suffice to describe the system studi
Externí odkaz:
http://arxiv.org/abs/1101.0471
In this work a static solution of Einstein-Cartan (EC) equations in 2+1 dimensional space-time is given by considering classical spin-1/2 field as external source for torsion of the space-time. Here, the torsion tensor is obtained from metricity cond
Externí odkaz:
http://arxiv.org/abs/0807.4413