Zobrazeno 1 - 10
of 602
pro vyhledávání: '"Karakasis P"'
Using Euclidean methods we investigate the thermodynamics of stealth black hole solutions, which are solutions that geometrically are indistinguishable from those of general relativity, however they are accompanied by a non-trivial additional field t
Externí odkaz:
http://arxiv.org/abs/2410.14451
In this work, we embark on the thermodynamic investigation concerning a family of primary charged black holes within the context of shift and parity symmetric Beyond Horndeski gravity. Employing the Euclidean approach, we derive the functional expres
Externí odkaz:
http://arxiv.org/abs/2404.07522
Autor:
Bakopoulos, Athanasios, Karakasis, Thanasis, Mavromatos, Nick E., Nakas, Theodoros, Papantonopoulos, Eleftherios
Publikováno v:
Phys.Rev.D 110 (2024) 2, 024014
We consider higher-order derivative gauge field corrections that arise in the fundamental context of dimensional reduction of String Theory and Lovelock-inspired gravities and obtain an exact and asymptotically flat black-hole solution, in the presen
Externí odkaz:
http://arxiv.org/abs/2402.12459
Publikováno v:
in IEEE Transactions on Signal Processing, vol. 71, pp. 4392-4406, 2023
Canonical correlation analysis (CCA) is a classic statistical method for discovering latent co-variation that underpins two or more observed random vectors. Several extensions and variations of CCA have been proposed that have strengthened our capabi
Externí odkaz:
http://arxiv.org/abs/2312.13455
Publikováno v:
Phys. Rev. D 109, 024033 (2024)
We discuss spontaneous scalarization of the Reissner-Nordstr\"om black hole in the presence of higher derivative gauge field corrections that arise in the context of string, as well as higher-dimensional more fundamental gravity theories. Our theory
Externí odkaz:
http://arxiv.org/abs/2311.10858
Autor:
Theodosopoulos, Dionysios P., Karakasis, Thanasis, Koutsoumbas, George, Papantonopoulos, Eleftherios
We study the motion of uncharged particles and photons in the background of a magnetically charged Euler-Heisenberg (EH) black hole (BH) with scalar hair. The spacetime can be asymptotically (A)dS or flat. After investigating particle motions around
Externí odkaz:
http://arxiv.org/abs/2311.02740
Three - dimensional static and spinning black hole solutions of the Einstein-Klein-Gordon system are obtained for a particular scalar field configuration. At large distances, and for small scalar field, the solutions reduce to the BTZ black hole. The
Externí odkaz:
http://arxiv.org/abs/2305.00686
We discuss exact regular compact object solutions in higher dimensional extensions of General Relativity sourced by a phantom scalar field in arbitrary $D$ spacetime dimensions ($D>2$), for which a central singularity is absent. We follow a bottom-up
Externí odkaz:
http://arxiv.org/abs/2305.00058
We study the geodesic motion of uncharged particles in the background of a magnetically charged Euler-Heisenberg black hole with a scalar hair. The spacetime can be asymptotically (A)dS or flat and we find, analysing the behavior of the effective pot
Externí odkaz:
http://arxiv.org/abs/2303.04196
Autor:
Georgios Giarmatzis, Styliani Fotiadou, Erasmia Giannakou, Evangelos Karakasis, Konstantinos Vadikolias, Nikolaos Aggelousis
Publikováno v:
Biomechanics, Vol 4, Iss 2, Pp 333-345 (2024)
This study aims to evaluate the consistency of musculoskeletal modelling outcomes during walking in chronic post-stroke patients, focusing on both affected and unaffected sides. Understanding the specific muscle forces involved is crucial for designi
Externí odkaz:
https://doaj.org/article/ef5724fd84614293817b214db989e840
