Speaker
Description
The ghost-free bi-metric gravity theory is a viable theory of gravity that explores the interaction
between a massless and a massive graviton and can be described in terms of two dynamical metrics.
In this paper, we present an exact static, spherically symmetric vacuum solution within this the-
ory. The solution is spatially Schwarzschild-de Sitter, with the value of the cosmological constant
determined by the graviton mass and the interaction parameters of the theory. Notably, for specific
parameter ranges, the solution represents a traversable Lorentzian wormhole that violates the weak
energy condition near its throat. Furthermore, we have investigated the evolution of scalar and elec-
tromagnetic fields in this wormhole spacetime and observed the presence of arbitrarily long-lived
quasi-resonant modes in the quasinormal spectrum.
| sunilsinghbohra87@gmail.com | |
| Affiliation | Phd Student |
