Zobrazeno 1 - 10
of 143
pro vyhledávání: '"M. Hortaçsu"'
Autor:
T. Birkandan, M. Hortaçsu
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 5, Pp 1-6 (2021)
Abstract 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 t
Externí odkaz:
https://doaj.org/article/3d86fa101fea4bd2beed3fdaba99f2c3
Autor:
M. Hortaçsu
Publikováno v:
Advances in High Energy Physics, Vol 2018 (2018)
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:
https://doaj.org/article/f6f34c2926fd46328b8fe0c3065ce4d6
Autor:
M. Hortaçsu, Tolga Birkandan
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 5, Pp 1-6 (2021)
European Physical Journal
European Physical Journal
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6006ae4191ccad7457e04bd6f499926
https://aperta.ulakbim.gov.tr/record/240462
https://aperta.ulakbim.gov.tr/record/240462
Autor:
M. Hortaçsu
Publikováno v:
The European Physical Journal Plus. 136
We use Heun-type solutions given in Suzuki et al. (Prog Theor Phys 100:491, 1998) for the radial Teukolsky equation written in the background metric of the Kerr–Newman–de Sitter geometry to calculate reflection coefficient for waves coming from t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494e6ed64188ea6c9e2043d6b98bb20f
https://doi.org/10.1140/epjp/s13360-020-01003-5
https://doi.org/10.1140/epjp/s13360-020-01003-5
Autor:
M. Hortaçsu
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::937521abd1f6171fbcab5462483e3814
Autor:
M. Hortaçsu
Publikováno v:
The European Physical Journal Plus. 135
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef3aeda8afebf3878de1ddb4c93a402c
https://doi.org/10.1140/epjp/s13360-020-00283-1
https://doi.org/10.1140/epjp/s13360-020-00283-1
Publikováno v:
Annals of Physics. 393:132-144
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d610e593eed39ffdb0ed1e7426e7df
https://doi.org/10.1016/j.aop.2018.04.012
https://doi.org/10.1016/j.aop.2018.04.012
Autor:
Tolga Birkandan, M. Hortaçsu
Publikováno v:
General Relativity and Gravitation. 50
Here we want to report an unfortunate misprint in the last equation, eq.(28), in our paper The zero mass limit of Kerr and Kerr-(anti-)de-Sitter space-times: exact solutions and wormholes , which was published in General Relativity and Gravitation, [
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fd66c41f6e9cd20e1a3cd9a47f92004
https://doi.org/10.1007/s10714-018-2431-z
https://doi.org/10.1007/s10714-018-2431-z
Autor:
M. Hortaçsu, Tolga Birkandan
Publikováno v:
General Relativity and Gravitation. 50
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6e268424fbfeb9b5b04c8e068a11ed3
https://doi.org/10.1007/s10714-018-2351-y
https://doi.org/10.1007/s10714-018-2351-y
Autor:
M. Hortaçsu, Tolga Birkandan
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1181e2803c600e9d261218b6e52ba60c
https://aperta.ulakbim.gov.tr/record/49847
https://aperta.ulakbim.gov.tr/record/49847