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pro vyhledávání: '"Matyjasek, Jerzy"'
We study the quasinormal modes of the spherically-symmetric $(2+1)$-dimensional analogue black hole, modeled by the ``draining bathtub'' fluid flow, and the $(3+1)$-dimensional canonical acoustic black hole. In the both cases the emphasis is on the a
Externí odkaz:
http://arxiv.org/abs/2408.16116
Autor:
Matyjasek, Jerzy
The objective of this paper is to construct the accurate (say, to 11 decimal places) frequencies of the quasinormal modes of the 5-dimensional Schwarzschild-Tangherlini black hole using three major techniques: the Hill determinant method, the continu
Externí odkaz:
http://arxiv.org/abs/2107.04815
Autor:
Matyjasek, Jerzy
Publikováno v:
Phys. Rev. D 102, 124046 (2020)
We consider gravitational quasinormal modes of the static and spherically-symmetric dirty black holes in the effective theory of gravity which is renormalizable at the two-loop level. It is demonstrated that using the WKB-Pad\'e summation proposed in
Externí odkaz:
http://arxiv.org/abs/2009.10793
Autor:
Matyjasek, Jerzy
Publikováno v:
Phys. Rev. D 102, 024082 (2020)
The static traversable wormhole should made out of some type of exotic matter which satisfies the Morris-Thorne conditions. Although the characteristic size of the region with the exotic matter can be made arbitrary small, the calculations performed
Externí odkaz:
http://arxiv.org/abs/2005.07077
Autor:
Matyjasek, Jerzy, Telecka, Malgorzata
Publikováno v:
Phys. Rev. D 100, 124006 (2019)
In previous work [1] we proposed an improvement of the WKB-based semianalytic technique of Iyer and Will for calculation of the quasiormal modes of black holes by constructing the Pad\'e approximants of the formal series for $\omega^{2}.$ It has been
Externí odkaz:
http://arxiv.org/abs/1908.09389
Autor:
Matyjasek, Jerzy
Publikováno v:
Phys. Rev. D 98, 104054 (2018)
Vacuum polarization of the quantized massive fields in Bianchi type I spacetime is investigated from the point of view of the adiabatic approximation and the Schwinger-DeWitt method. It is shown that both approaches give the same results that can be
Externí odkaz:
http://arxiv.org/abs/1811.00993
Autor:
Matyjasek, Jerzy, Tryniecki, Dariusz
We construct and study the vacuum polarization, $\langle \phi^{2}\rangle_{D},$ of the quantized massive scalar field with a general curvature coupling parameter in higher-dimensional static and spherically-symmetric black hole spacetimes, with a spec
Externí odkaz:
http://arxiv.org/abs/1805.04729
Publikováno v:
Phys. Rev. D 96, 104057 (2017)
In order to be traversable, the static Lorentzian wormhole must be made out of some exotic matter that violates the weak energy condition. The quantized fields are the natural candidates as their stress-energy tensor, in many cases, possesses desired
Externí odkaz:
http://arxiv.org/abs/1709.09034
Autor:
Matyjasek, Jerzy, Opala, Michał
Publikováno v:
Phys. Rev. D 96, 024011 (2017)
We have extended the semianalytic technique of Iyer and Will for computing the complex quasinormal frequencies of black holes, $\omega,$ by constructing the Pad\'e approximants of the (formal) series for $\omega^{2}$. It is shown that for the (so far
Externí odkaz:
http://arxiv.org/abs/1704.00361
Autor:
Matyjasek, Jerzy, Sadurski, Pawel
Publikováno v:
Phys. Rev. D 92, 044023 (2015)
The first-order semiclassical Einstein field equations are solved in the interior of the Schwarzschild-Tangherlini black holes. The source term is taken to be the stress-energy tensor of the quantized massive scalar field with arbitrary curvature cou
Externí odkaz:
http://arxiv.org/abs/1506.04432