Casimir Wormholes in Modified Symmetric Teleparallel Gravity

TL;DR

This paper explores how the Casimir effect can support stable wormholes within modified symmetric teleparallel gravity, analyzing different configurations and their energy conditions and stability.

Contribution

It introduces new wormhole solutions in $f(Q)$ gravity driven by the Casimir effect, considering various geometries and analyzing their stability and energy conditions.

Findings

Some solutions violate classical energy conditions at the throat.

The equation of state varies for different configurations.

Certain wormholes remain stable under the generalized TOV equation.

Abstract

In recent years there has been a growing interest in the field of Casimir wormhole. In classical general relativity (GR), it is known that the null energy condition (NEC) has to be violated to have a wormhole to be stable. The Casimir effect is an experimentally verified effect that is caused due to the vacuum field fluctuations in quantum field theory. Since the Casimir effect provides the negative energy density, thus this act as an ideal candidate for the exotic matter needed for the stability of the wormhole. In this paper, we study the Casimir effect on the wormhole geometry in modified symmetric teleparallel gravity or $f(Q)$ gravity, where the non-metricity scalar $Q$ drives the gravitation interaction. We consider three systems of the Casimir effect such as (i) two parallel plates, (ii) two parallel cylindrical plates, and (iii) two-sphere separated by a large distance to make it more experimentally feasible. Further, we studied the obtained wormhole solutions for each case with energy conditions at the wormhole throat with radius $r_0$ and found that some arbitrary quantity violates the classical energy conditions at the wormhole throat. Furthermore, the behavior of the equation of state (EoS) is also analyzed for each case. Finally, we investigate the stability of the obtained Casimir effect wormhole solutions with the generalized Tolman-Oppenheimer-Volkoff (TOV) equation.