2021
DOI: 10.48550/arxiv.2112.03954
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Black Holes in Klein Space

Erin Crawley,
Alfredo Guevara,
Noah Miller
et al.

Abstract: The analytic continuation of the general signature (1, 3) Lorentzian Kerr-Taub-NUT black holes to signature (2, 2) Kleinian black holes is studied. Their global structure is characterized by a toric Penrose diagram resembling their Lorentzian counterparts. Kleinian black holes are found to be self-dual when their mass and NUT charge are equal for any value of the Kerr rotation parameter a. Remarkably, it is shown that the rotation a can be eliminated by a large diffeomorphism; this result also holds in Euclide… Show more

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Cited by 19 publications
(63 citation statements)
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“…As seen in [19], extra boundary components introduce an enhancement in the soft phase space. The observations in [24,43,67] point towards some natural starting points in terms of limits of scattering amplitudes or changing the modular parameter for CCFT on the celestial torus.…”
Section: Discussionmentioning
confidence: 93%
“…As seen in [19], extra boundary components introduce an enhancement in the soft phase space. The observations in [24,43,67] point towards some natural starting points in terms of limits of scattering amplitudes or changing the modular parameter for CCFT on the celestial torus.…”
Section: Discussionmentioning
confidence: 93%
“…Even though the field appears free, singularities of the integral (4) in x µ encode compact sources when interpreted in (3, 1) signature. We anticipate that φ f will be identified with gravitational perturbations as in [65].…”
Section: Twistor Theorymentioning
confidence: 98%
“…(we use the conventions of App. E of [65]; both x A Ḃ and Z α will be real in (2, 2) signature). Then, the condition…”
Section: Twistor Theorymentioning
confidence: 99%
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