Nonsymmetric dynamical thin-shell wormhole in Robinson-Trautman class

0497282 - ASÚ 2019 RIV DE eng J - Článek v odborném periodiku
Svítek, O. - Tahamtan, Tayebeh
Nonsymmetric dynamical thin-shell wormhole in Robinson-Trautman class.
European Physical Journal C. Roč. 78, č. 2 (2018), č. článku 167. ISSN 1434-6044. E-ISSN 1434-6052
Grant ostatní: GA ČR(CZ) GA17-13525S
Institucionální podpora: RVO:67985815
Klíčová slova: spherical gravitational waves * einstein-maxwell theory * general-relativity
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 4.843, rok: 2018

The thin-shell wormhole created using the Darmois-Israel formalism applied to Robinson-Trautman family of spacetimes is presented. The stress energy tensor created on the throat is interpreted in terms of two dust streams and it is shown that asymptotically this wormhole settles to the Schwarzschild wormhole with a throat located at the position of the horizon. This behavior shows a nonlinear stability (within the Robinson-Trautman class) of this spherically symmetric wormhole. The gravitational radiation emitted by the Robinson-Trautman wormhole during the transition to spherical symmetry is indistinguishable from that of the corresponding black hole Robinson-Trautman space-time. Subsequently, we show that the higher-dimensional generalization of Robinson-Trautman geometry offers a possibility of constructing wormholes without the need to violate the energy conditions for matter induced on the throat.
Trvalý link: http://hdl.handle.net/11104/0289840