KONOPLYA, Roman a Antonina Frantsivna ZINHAILO. Hawking radiation of non-Schwarzschild black holes in higher derivative gravity: A crucial role of grey-body factors. Physical Review D. 2019, roč. 99, č. 10, s. "104060-1"-"104060-9", 9 s. ISSN 2470-0010. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.99.104060.
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Základní údaje
Originální název Hawking radiation of non-Schwarzschild black holes in higher derivative gravity: A crucial role of grey-body factors
Autoři KONOPLYA, Roman (804 Ukrajina, garant, domácí) a Antonina Frantsivna ZINHAILO (804 Ukrajina, domácí).
Vydání Physical Review D, 2019, 2470-0010.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10308 Astronomy
Stát vydavatele Spojené státy
Utajení není předmětem státního či obchodního tajemství
WWW URL
Kód RIV RIV/47813059:19240/19:A0000431
Organizační jednotka Filozoficko-přírodovědecká fakulta v Opavě
Doi http://dx.doi.org/10.1103/PhysRevD.99.104060
UT WoS 000469329900009
Klíčová slova anglicky Hawking radiation; higher derivative gravity; grey-body factors
Štítky FÚ, GA19-03950S, RCTPA, RIVOK, SGS12-2019
Příznaky Mezinárodní význam, Recenzováno
Návaznosti GA19-03950S, projekt VaV.
Změnil Změnila: Ing. Petra Skoumalová, učo 50554. Změněno: 21. 4. 2020 10:32.
Anotace
The higher derivative gravity includes corrections of the second order in curvature and allows for both Schwarzschild and non-Schwarzschild asymptotically flat black-hole solutions. Here, we find the grey-body factors and energy emission rates for Hawking radiation of test Dirac and electromagnetic fields in the vicinity of such a non-Schwarzschild black hole. The temperature and mass of the black hole monotonically decrease from their Schwarzschild values to zero when the coupling constant is increased up to its extremal value. Nevertheless, for small and moderate values of the coupling constant, the Hawking radiation is enhanced, and only in the regime of large coupling it is suppressed, as one could expect. The reason for such counterintuitive behavior is the important role of the grey-body factors: for small and moderate couplings, the temperature falls relatively slowly, while the effective potentials for black holes of the same mass become considerably lower, allowing for much higher transmission rates. We have also estimated the lifetime of such black holes and shown that the range of black-hole masses at which ultrarelativistic emission of massive electrons and positrons starts is shifted towards smaller black-hole masses when the coupling constant is large.
VytisknoutZobrazeno: 8. 5. 2024 21:32