Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Yun Soo Myung"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 7, Pp 1-9 (2024)
Abstract We investigate the tachyonic instability of Kerr–Newman (KN) black hole with a rotation parameter a in the Einstein–Chern–Simons-scalar theory coupled with a quadratic massive scalar field. This instability analysis corresponds to expl
Externí odkaz:
https://doaj.org/article/ce8f3a74e7594a279f4e027643997a39
Autor:
Yun Soo Myung
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 12, Pp 1-7 (2023)
Abstract We investigate scalarized black holes in new massive gravity dressed by a nonminimally coupled scalar. For this purpose, we find the Gregory–Laflamme (GL) and tachyonic instability bounds of bald BTZ black hole expressed in terms of $$m^2$
Externí odkaz:
https://doaj.org/article/0c16f26691e64e2db7824ed953b72454
Autor:
Yun Soo Myung
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-7 (2023)
Abstract Stability of Schwarzschild-AdS (SAdS) black hole is investigated in Einstein–Weyl-scalar (EWS) theory with a negative cosmological constant. Here, we introduce a quadratic scalar coupling to the Weyl term, instead of the Gauss–Bonnet ter
Externí odkaz:
https://doaj.org/article/68499705c9dc4b6fb66daa8585ca1bca
Autor:
Yun Soo Myung
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 10, Pp 1-10 (2022)
Abstract We investigate the superradiant instability of dyonic Reissner–Nordström (dRN) black holes with two charges under an electrically charged massive scalar perturbation. Two conditions for possessing a trapping well are obtained from analyzi
Externí odkaz:
https://doaj.org/article/cd35e88ac6304a7698cc13822a34d1dd
Autor:
Yun Soo Myung
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 6, Pp 1-10 (2022)
Abstract We revisit the superradiant stability of Kerr–Newman black holes under a charged massive scalar perturbation. We obtain a newly suitable potential which is not singular at the outer horizon when a radial equation is expressed the Schrödin
Externí odkaz:
https://doaj.org/article/fc0f97c16cf849faab9a72774eef9cf0
Publikováno v:
Universe, Vol 9, Iss 1, p 26 (2022)
The spontaneous scalarization of Schwarzscild-AdS is investigated in the Einstein-scalar-Gauss–Bonnet (ESGB) theory. Firstly, we construct scalarized AdS black holes numerically. Secondly, making use of the homotopy analysis method (HAM), we obtain
Externí odkaz:
https://doaj.org/article/4090b543ab8640c081f2c61d223921c9
Autor:
De-Cheng Zou, Yun Soo Myung
Publikováno v:
Physics Letters B, Vol 820, Iss , Pp 136545- (2021)
The tachyonic instability of the Kerr black holes is analyzed in the Einstein-scalar theory with the quadratic scalar couplings to two topological terms which are parity-even Gauss-Bonnet and parity-odd Chern-Simons terms. For positive coupling α, w
Externí odkaz:
https://doaj.org/article/a793d8798d504777bf0f0e4b4484d807
Autor:
Yun Soo Myung, De-Cheng Zou
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-11 (2019)
Abstract We analyze the stability of scalarized charged black holes in the Einstein–Maxwell–Scalar (EMS) theory with quadratic coupling. These black holes are labelled by the number of $$n=0,1,2,\ldots $$ n=0,1,2,… , where $$n=0$$ n=0 is called
Externí odkaz:
https://doaj.org/article/2e60737d8dc3466d9bb395f1deeb45ea
Autor:
Yun Soo Myung, De-Cheng Zou
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 3, Pp 1-11 (2019)
Abstract The scalarization of Reissner–Nordström black holes was recently proposed in the Einstein-Maxwell-scalar theory. Here, we show that the appearance of the scalarized Reissner–Nordström black hole is closely related to the Gregory-Laflam
Externí odkaz:
https://doaj.org/article/e985a08e95c943c08a7c2d09f231a9a0
Autor:
Yun Soo Myung, De-Cheng Zou
Publikováno v:
Physics Letters B, Vol 790, Iss , Pp 400-407 (2019)
We perform the stability analysis on scalarized charged black holes in the Einstein–Maxwell–Scalar (EMS) theory by computing quasinormal mode spectrum. It is noted that the appearance of these black holes with scalar hair is closely related to th
Externí odkaz:
https://doaj.org/article/baf45c3c01d940d7a14a100beaab9294