Ringing of the regular black-hole/wormhole transition

@article{49404,
   author = {Churilova, Maria and Stuchlík, Zdeněk},
   article_number = {7},
   doi = {http://dx.doi.org/10.1088/1361-6382/ab7717},
   keywords = {black hole; quasinormal mode; wormhole; echo},
   language = {eng},
   issn = {0264-9381},
   journal = {Classical and Quantum Gravity},
   title = {Ringing of the regular black-hole/wormhole transition},
   url = {https://iopscience.iop.org/article/10.1088/1361-6382/ab7717},
   volume = {37},
   year = {2020}
}

TY  - JOUR
ID  - 49404
AU  - Churilova, Maria - Stuchlík, Zdeněk
PY  - 2020
TI  - Ringing of the regular black-hole/wormhole transition
JF  - Classical and Quantum Gravity
VL  - 37
IS  - 7
SP  - "075014-1"-"075014-12"
EP  - "075014-1"-"075014-12"
SN  - 02649381
KW  - black hole
KW  - quasinormal mode
KW  - wormhole
KW  - echo
UR  - https://iopscience.iop.org/article/10.1088/1361-6382/ab7717
N2  - A simple one-parameter generalization of the Schwarzschild spacetime was recently suggested by A Simpson and M Visser [2019 J. Cosmol. Astropart. Phys. JCAP02(2019)042] as a toy model describing the regular black hole and traversable wormhole states separated by the border (one-way wormhole) state. We study quasinormal modes of all the three states and show that the black-hole/wormhole transition is characterized by echoes, while the remnant of the black hole state is kept in the time-domain profile of the wormhole perturbation at the initial stage of the exponential fall off. Calculations of quasinormal modes using the WKB method with Pade expansion and the time-domain integration are in good agreement. An analytical formula governing quasinormal modes in the eikonal regime is given.
ER  - 

CHURILOVA, Maria and Zdeněk STUCHLÍK. Ringing of the regular black-hole/wormhole transition. \textit{Classical and Quantum Gravity}. 2020, vol.~37, No~7, p.~''075014-1''-''075014-12'', 12 pp. ISSN~0264-9381. Available from: https://dx.doi.org/10.1088/1361-6382/ab7717.