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Rotating wormholes in five dimensions with equal angular momenta: Large asymmetry regime
Phys. Rev. D 113, 124054 – Published 15 June, 2026
DOI: https://doi.org/10.1103/w1f7-r1x6
Abstract
We clarify the relationship between rotation and the energy condition for stationary rotating wormhole solutions of the Einstein equations coupled to a phantom field in five-dimensional spacetime with equal angular momenta, particularly with large asymmetry between the two sides. Setting equal angular momenta about two independent axes leads to a spatial section that is a homogeneous squashed 3-sphere at a constant radial coordinate. It was shown by Dzhunushaliev et al. that the violation of the null energy condition can become arbitrarily small due to rotation. We find that the degree of violation of the null energy condition is essentially determined by the angular momentum and shows little dependence on asymmetry, that is, the mass difference between the two asymptotic regions. We also discuss the relation between the wormhole spacetime and the Myers-Perry black hole. We find that the geometry asymptotes to the extremal Myers-Perry spacetime in the limit of large angular momentum, while the nonextremal black hole geometry cannot be reproduced in any limit.
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