Comments on "New Brans-Dicke Wormholes"
Arunava Bhadra, Ion Simaciu, Kamal Kanti Nandi, Yuan-Zhong Zhang
TL;DR
This paper clarifies that two recently claimed new Brans-Dicke wormhole solutions are actually known solutions presented in a different conformal gauge, emphasizing the importance of gauge choice in solution classification.
Contribution
The paper demonstrates that the purported new solutions are not novel but are existing solutions expressed in a different conformal gauge.
Findings
The solutions are equivalent to known Brans-Dicke solutions.
The solutions belong to Class I and II in the literature.
Gauge choice affects the apparent novelty of solutions.
Abstract
It is shown that the recently claimed two new Brans-Dicke wormhole solutions [F. He and S-W. Kim, Phys. Rev. D{\bf 65}, 084022 (2002)] are not really new solutions. They are just the well known Brans-Dicke solutions of Class I and II in a different conformal gauge.
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