Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Bayram Tekin"'
Autor:
Kerim Demirel, Bayram Tekin
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 12, Pp 1-17 (2024)
Abstract A particular extension of Einstein’s General Relativity up to and including quartic terms in the curvature tensor is minimal in the sense that it has a unique maximally symmetric vacuum and only a massless spin-2 excitation in its spectrum
Externí odkaz:
https://doaj.org/article/aa67b6ac31254f27ab049d85b9a92b63
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 9, Pp 1-6 (2024)
Abstract We show that there is a phenomenologically and theoretically consistent limit of the generic Einstein-Aether theory in which the Einstein-Aether field equations reduce to Einstein field equations with a perfect fluid distribution sourced by
Externí odkaz:
https://doaj.org/article/f8b85fcea2db4dd8b6725a81d4157a06
Autor:
Kezban Tasseten, Bayram Tekin
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-43 (2023)
Abstract We define a new geometric flow, which we shall call the K-flow, on 3-dimensional Riemannian manifolds; and study the behavior of Thurston’s model geometries under this flow both analytically and numerically. As an example, we show that an
Externí odkaz:
https://doaj.org/article/f9237f4f133743428e51e6cc4d4373d5
Autor:
Emel Altas, Bayram Tekin
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-7 (2023)
Abstract We provide two novel ways to compute the surface gravity ( $$\kappa $$ κ ) and the Hawking temperature $$(T_{H})$$ ( T H ) of a stationary black hole: in the first method $$T_{H}$$ T H is given as the three-volume integral of the Gauss–Bo
Externí odkaz:
https://doaj.org/article/83a33975a32445f29ff3d48ec877a066
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 7, Pp 1-9 (2021)
Abstract We construct the gauge-invariant electric and magnetic charges in Yang–Mills theory coupled to cosmological general relativity (or any other geometric gravity), extending the flat spacetime construction of Abbott and Deser (Phys Lett B 116
Externí odkaz:
https://doaj.org/article/dc4153bdc9454eeca929aaedbc82e6c9
Autor:
Emel Altas, Bayram Tekin
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 4, Pp 1-6 (2021)
Abstract Initial value problem in general relativity is often solved numerically; with only a few exceptions one of which is the “model” solution of Bowen and York where an analytical form of the solution is available. The solution describes a dy
Externí odkaz:
https://doaj.org/article/1e3351d36e4d45438d0739dd3b9227e3
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 7, Pp 1-6 (2020)
Abstract No! We show that the field equations of Einstein–Gauss–Bonnet theory defined in generic $$D>4$$ D>4 dimensions split into two parts one of which always remains higher dimensional, and hence the theory does not have a non-trivial limit to
Externí odkaz:
https://doaj.org/article/d4173f5193d54bf9ad81c2d6fab8a052
Autor:
Ercan Kilicarslan, Bayram Tekin
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 2, Pp 1-6 (2019)
Abstract Gravitational memory, a residual change, arises after a finite gravitational wave pulse interacts with free masses. We calculate the memory effect in massive gravity as a function of the graviton mass $$(m_g)$$ (mg) and show that it is discr
Externí odkaz:
https://doaj.org/article/7b0fa3a583a347c7937343a374f42f4a
By focusing on the mostly used variational methods, this monograph aspires to give a unified description and comparison of various ways of constructing conserved quantities for perturbations and to study symmetries in general relativity and modified
Publikováno v:
Physical Review
In gauge invariant theories, like Einstein-Maxwell theory, physical observables should be gauge invariant. In particular, mass, entropy, angular momentum, electric charge and their respective chemical potentials, temperature, horizon angular velocity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e693bc31400646f385f9d9f4bba74609
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