Quasinormal modes in the field of a dyon-like dilatonic black hole

Quasinormal modes of massless test scalar field in the background of gravitational field for a non-extremal dilatonic dyonic black hole are explored. The dyon-like black hole solution is considered in the gravitational 4d model involving two scalar fields and two 2-forms. It is governed by two 2-dimensional dilatonic coupling vectors λi obeying λi(λ1+ λ2) > 0 , i= 1 , 2. The first law of black hole thermodynamics is given and the Smarr relation is verified. Quasinormal modes for a massless scalar (test) field in the eikonal approximation are obtained and analysed. These modes depend upon a dimensionless parameter a (0 < a≤ 2) which is a function of λi. For limiting strong (a= + 0) and weak (a= 2) coupling cases, they coincide with the well-known results for the Schwarzschild and Reissner–Nordström solutions. It is shown that the Hod conjecture, connecting the damping rate and the Hawking temperature, is satisfied for 0 < a≤ 1 and all allowed values of parameters. © 2021, The Author(s).

Авторы
Malybayev A.N.1 , Boshkayev K.A.1, 2, 3, 4 , Ivashchuk V.D. 5, 6
Издательство
Springer New York LLC
Номер выпуска
5
Язык
Английский
Статус
Опубликовано
Номер
475
Том
81
Год
2021
Организации
  • 1 Department of Theoretical and Nuclear Physics, Al-Farabi Kazakh National University, Al-Farabi Ave., 71, Almaty, 050040, Kazakhstan
  • 2 National Nanotechnology Laboratory of Open Type, Al-Farabi Kazakh National University, Al-Farabi Ave., 71, Almaty, 050040, Kazakhstan
  • 3 Department of Engineering Physics, Satbayev University, 22 Satbayev St., Almaty, 050013, Kazakhstan
  • 4 Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Tauelsizdik Ave 27/1-9, Nur-Sultan, 010000, Kazakhstan
  • 5 Center for Gravitation and Fundamental Metrology, VNIIMS, 46 Ozyornaya St., Moscow, 119361, Russian Federation
  • 6 Institute of Gravitation and Cosmology, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation
Дата создания
20.07.2021
Дата изменения
20.07.2021
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/74306/
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