Bronnikov-like Wormholes in Einstein-Scalar Gravity

Abstract

In this paper, we analyse the global structure of the Bronnikov wormhole, which is the most general spherically-symmetric and static solution in Einstein gravity coupled to a free massless phantom scalar. We then introduce a scalar potential and construct a large class of exact solutions that can be viewed as generalizations of the Bronnikov wormhole. We study the global structure and classify the parameters of these new wormholes. For suitable parameters, some are regular black holes with a bouncing de Sitter spacetime inside the event horizon.

$f({\sf R})$ Gravity Wormholes sourced by a Phantom Scalar Field

“…It would be interesting to consider a more general metric ansatz such the one in [72] and try to find a solution to the f (R) field equations that reduces to the known solutions of GR [72][73][74]. In this work, the scalar field is minimally coupled to gravity via the volume element, so one could consider a regular non-minimally coupled scalar field that will violate the energy conditions and try to find wormhole solutions.…”

Echoes from asymmetric wormholes and black bounce

“…The compact horizonless objects involve neutron stars [11], boson stars [12] and wormholes [9,[13][14][15][16][17] and so on. The original concept of wormholes is proposed by Ludwig Flamm in 1916 [18].…”

Echoes from Asymmetric Wormholes and Black Bounce

“…The compact horizonless objects involve neutron stars [10], boson stars [11] and wormholes [9,12,13] and so on. Due to the widespread interests of wormhole physics [14][15][16][17][18][19][20], it has a great motivation to distinguish black holes with wormholes. A useful way to achieve this goal is perturbing the objects and observing their evolution.…”