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@article{49346, author = {Churilova, Maria and Stuchlík, Zdeněk}, article_number = {July}, doi = {http://dx.doi.org/10.1016/j.aop.2020.168181}, keywords = {DECAY; FIELD}, language = {eng}, issn = {0003-4916}, journal = {ANNALS OF PHYSICS}, title = {Quasinormal modes of black holes in 5D Gauss-Bonnet gravity combined with non-linear electrodynamics}, url = {https://www.sciencedirect.com/science/article/abs/pii/S0003491620301147?via%3Dihub}, volume = {418}, year = {2020} }
TY - JOUR ID - 49346 AU - Churilova, Maria - Stuchlík, Zdeněk PY - 2020 TI - Quasinormal modes of black holes in 5D Gauss-Bonnet gravity combined with non-linear electrodynamics JF - ANNALS OF PHYSICS VL - 418 IS - July SP - "168181-1"-"168181-13" EP - "168181-1"-"168181-13" SN - 00034916 KW - DECAY KW - FIELD UR - https://www.sciencedirect.com/science/article/abs/pii/S0003491620301147?via%3Dihub N2 - Quasinormal modes of black holes were previously calculated in a non-linear electrodynamics and in the Gauss-Bonnet gravity theory. Here we take into consideration both of the above factors and find quasinormal modes of a (massive) scalar field in the background of a black hole in the five-dimensional Einstein-Gauss-Bonnet gravity coupled to a non-linear electrodynamics having Maxwellian weak-field limit. For the non-linear electrodynamics we considered the high frequency (eikonal) regime of oscillations analytically, while for the lower multipoles the higher order WKB analysis with the help of Pade approximants and the time domain integration were used. We found that perturbations of a test scalar field violate the inequality between the damping rate of the least damped mode and the Hawking temperature, known as the Hod's proposal. This does not exclude the situation in which gravitational spectrum may restore the Hod's inequality, so that only the analysis of the full spectrum, including gravitational perturbations, will show if the quasinormal modes we found here for the scalar field can be a counterexample to the Hod's conjecture or not. We also revealed that in such a system, which includes the higher curvature corrections and non-linear electrodynamics, for perturbations of a massive scalar field there exists the phenomenon of the arbitrary long lived quasinormal modes - quasiresonances. ER -
CHURILOVA, Maria and Zdeněk STUCHLÍK. Quasinormal modes of black holes in 5D Gauss-Bonnet gravity combined with non-linear electrodynamics. \textit{ANNALS OF PHYSICS}. 2020, vol.~418, July, p.~''168181-1''-''168181-13'', 13 pp. ISSN~0003-4916. Available from: https://dx.doi.org/10.1016/j.aop.2020.168181.
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