8 June 2021

Current trends in gravitation Seminar

Location: University Oldenburg - Online
When: 8.6.2021, 16:15 h

Speaker: Panagiota Kanti (University of Ioannina, Greece)

Title: From Black Holes to Wormholes in GR and Beyond 

Abstract: We will start from Einstein's theory of General Relativity and review the families of black-hole solutions that this theory admits. We will pay particular attention to what these solutions hide in the region inside their event horizon thus making our first acquaintance with the Einstein-Rosen bridge. We will then study the Morris-Thorne wormhole solution which appeared almost 35 years ago but still serves as a prototype solution for modern research in our quest for traversable wormholes. We will demonstrate the need to go beyond General Relativity in order to accomplish this objective, and we will finally focus on a particular generalised theory of gravity, the Einstein-scalar-Gauss-Bonnet theory. We will show that this theory leads to a plethora of wormhole solutions some of which possess attractive characteristics such as traversability, macroscopic size, small tidal forces and stability under perturbations.