Comment on ''Traversable Wormholes in General Relativity''

TL;DR

This paper critiques a previous work on traversable wormholes, clarifying that a specific physical condition imposed on the wormhole throat is unnecessary, thereby challenging prior assumptions in the field.

Contribution

The authors demonstrate that the condition used to eliminate gravitational force at the wormhole throat is not required, providing a clarification in the theoretical understanding of wormhole solutions.

Findings

The physical condition on the throat is unnecessary.

Challenging previous assumptions about wormhole stability.

Clarification of theoretical requirements for wormhole solutions.

Abstract

In the letter titled ''Traversable Wormholes in General Relativity'' [Phys. Rev. Lett. 128, 091104 (2022)], R. A. Konoplya and A. Zhidenko have constructed an asymmetric wormhole solution, which is not symmetric about the throat and is compounded from smooth gravitational and charged Dirac fields. However, the authors have claimed that a physically relevant condition on the throat is imposed to lead to no gravitational force experienced by a stationary observer at the throat. In this comment, we point out that the above condition is unnecessary.