Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes

@article{29876,
   author = {Toshmatov, Bobir and Stuchlík, Zdeněk},
   article_number = {7},
   doi = {http://dx.doi.org/10.1140/epjp/i2017-11596-3},
   keywords = {quasinormal modes; massive scalar fields; black holes; cosmic repulsion},
   language = {eng},
   issn = {2190-5444},
   journal = {European Physical Journal Plus},
   title = {Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes},
   url = {https://link.springer.com/article/10.1140%2Fepjp%2Fi2017-11596-3},
   volume = {132},
   year = {2017}
}

TY  - JOUR
ID  - 29876
AU  - Toshmatov, Bobir - Stuchlík, Zdeněk
PY  - 2017
TI  - Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes
JF  - European Physical Journal Plus
VL  - 132
IS  - 7
SP  - „324-1“-„324-9“
EP  - „324-1“-„324-9“
SN  - 21905444
KW  - quasinormal modes
KW  - massive scalar fields
KW  - black holes
KW  - cosmic repulsion
UR  - https://link.springer.com/article/10.1140%2Fepjp%2Fi2017-11596-3
L2  - https://link.springer.com/article/10.1140%2Fepjp%2Fi2017-11596-3
N2  - We study in special limiting cases quasinormal modes of massive scalar fields in the Schwarzschild-de Sitter black hole backgrounds. We determine the lower limit on the mass parameter of the scalar field that allows the waves with quasinormal frequencies to propagate to infinity, showing that it depends on the spacetime parameters only. Then we discuss in the large multipole number limit quasinormal modes, whose frequencies can be directly related to the unstable circular photon geodesics. In the large scalar mass approximation, we demonstrate the new interesting phenomenon of slowly decaying resonances, that are strongly related to the maximum of the effective potential of the massive scalar field, which is located at the static radius of the Schwarzschild-de Sitter spacetimes, where the cosmic repulsion is just balanced by the black hole attraction.
ER  - 

TOSHMATOV, Bobir a Zdeněk STUCHLÍK. Slowly decaying resonances of massive scalar fields around Schwarzschild-de Sitter black holes. \textit{European Physical Journal Plus}. roč.~132, č.~7, s.~„324-1“-„324-9“, 9 s. ISSN~2190-5444. doi:10.1140/epjp/i2017-11596-3. 2017.