General parametrization of wormhole spacetimes and its application to shadows and quasinormal modes

@article{58624,
   author = {Bronnikov, Kirill A. and Konoplya, Roman and Pappas, Thomas},
   article_location = {College Park (USA)},
   article_number = {2},
   doi = {http://dx.doi.org/10.1103/PhysRevD.103.124062},
   keywords = {black hole; shadow;quasinormal modes;wormhole background},
   language = {eng},
   issn = {2470-0010},
   journal = {Physical Review D},
   title = {General parametrization of wormhole spacetimes and its application to shadows and quasinormal modes},
   url = {https://journals.aps.org/prd/abstract/10.1103/PhysRevD.103.124062},
   volume = {103},
   year = {2021}
}

TY  - JOUR
ID  - 58624
AU  - Bronnikov, Kirill A. - Konoplya, Roman - Pappas, Thomas
PY  - 2021
TI  - General parametrization of wormhole spacetimes and its application to shadows and quasinormal modes
JF  - Physical Review D
VL  - 103
IS  - 2
SP  - "124062-1"-"124062-20"
EP  - "124062-1"-"124062-20"
PB  - American Physical Society
SN  - 24700010
KW  - black hole
KW  - shadow;quasinormal modes;wormhole background
UR  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.103.124062
N2  - The general parametrization for spacetimes of spherically symmetric Lorentzian, traversable wormholes in an arbitrary metric theory of gravity is presented. The parametrization is similar in spirit to the post-Newtonian parametrized formalism, but with validity that extends beyond the weak field region and covers the whole space. Our method is based on a continued-fraction expansion in terms of a compactified radial coordinate. Calculations of shadows and quasinormal modes for various examples of parametrization of known wormhole metrics that we have performed show that, for most cases, the parametrization provides excellent accuracy already at the first order. Therefore, only a few parameters are dominant and important for finding potentially observable quantities in a wormhole background. We have also extended the analysis to the regime of slow rotation.
ER  - 

BRONNIKOV, Kirill A., Roman KONOPLYA a Thomas PAPPAS. General parametrization of wormhole spacetimes and its application to shadows and quasinormal modes. \textit{Physical Review D}. College Park (USA): American Physical Society, 2021, roč.~103, č.~2, s.~''124062-1''-''124062-20'', 20 s. ISSN~2470-0010. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.103.124062.