Unique quasi-topological theories with first-order equations are found for Taub-NUT, NHEK, swirling and related 4D symmetric metrics, enabling closed-form solutions and regular black holes from high-order curvature corrections.
Wick-connected theories and Lorentz violation
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abstract
We consider double Wick rotation in field theories, which analytically continues the time coordinate, and then reinterprets one of the spatial directions as the new Lorentzian time. We show that if Lorentz-invariance is absent, Wick-connected theories are no longer necessarily equivalent. Focusing on flat spacetime, we study the propagating modes, unitarity and renormalizability of such Wick-connected theories, and provide criteria for when such notions fail to translate.
fields
gr-qc 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Quasi-topological gravity for 4-dimensional Taub-NUT, near-horizon extreme Kerr, and swirling symmetries
Unique quasi-topological theories with first-order equations are found for Taub-NUT, NHEK, swirling and related 4D symmetric metrics, enabling closed-form solutions and regular black holes from high-order curvature corrections.