1 March 2021 to 9 April 2021
Institut Henri Poincaré
Europe/Paris timezone

Revisiting a family of wormholes: geometry, matter, scalar quasi-normal modes and echoes

Not scheduled
20m
Amphitheater Darboux (Institut Henri Poincaré)

Amphitheater Darboux

Institut Henri Poincaré

11, Rue Pierre et Marie Curie 75005 Paris
Poster

Description

In our work ‘Revisiting a family of wormholes: geometry, matter, scalar quasi-normal modes and echoes (P.D.Roy, S. Aneesh, S. Kar, Eur. Phys. J. C (2020) 80: 850)’ we study the behavior of a family of ultrastatic, Lorentzian wormholes having two parameters, namely ‘n’ that controls the geometry of each member wormhole and throat radius ‘b_0’, under scalar perturbations. For n=2 we get the well-known Ellis-Bronnikov wormhole. Our wormholes for n>2 are characterised by double barrier effective potential which makes them distinctly different from the special case of Ellis-Bronnikov wormhole. We observe that the associated scalar quasi-normal modes can be used as a tool for distinguishing the smaller ‘n’ geometry wormholes. On the other hand, large 'n’ wormholes are hard to distinguish through their QNMs because of their nearly identical geometries. Hence, for such wormhole members the echo structure plays pivotal role in telling the wormhole members apart from one-another.

Primary authors

Ms Poulami Dutta Roy (IIT Kharagpur) Mr Aneesh S. (University of Florida) Prof. Sayan Kar (IIT Kharagpur)

Presentation Materials

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