Constructs charged multi-sheet wormhole solutions in 4D Einstein-Maxwell-massless phantom scalar gravity via Harrison transformation, demonstrating regular solutions exist beyond the Q_e² + Q_m² < M² bound with throat radius fixed by regularity.
New axisymmetric stationary solutions of five-dimensional vacuum Einstein equations with asymptotic flatness
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abstract
New axisymmetric stationary solutions of the vacuum Einstein equations in five-dimensional asymptotically flat spacetimes are obtained by using solitonic solution-generating techniques. The new solutions are shown to be equivalent to the four-dimensional multi-solitonic solutions derived from particular class of four-dimensional Weyl solutions and to include different black rings from those obtained by Emparan and Reall.
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The authors derive explicit monodromy matrices for Bena-Warner BPS solutions and almost-BPS configurations including two-center black rings, factorize them via nilpotent elements of so(4,4), and construct an SO(4,4) duality relating branches of the Rasheed-Larsen solution.
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Charged multi-sheet wormhole solutions
Constructs charged multi-sheet wormhole solutions in 4D Einstein-Maxwell-massless phantom scalar gravity via Harrison transformation, demonstrating regular solutions exist beyond the Q_e² + Q_m² < M² bound with throat radius fixed by regularity.
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Monodromy-Matrix Description of Extremal Multi-centered Black Holes
The authors derive explicit monodromy matrices for Bena-Warner BPS solutions and almost-BPS configurations including two-center black rings, factorize them via nilpotent elements of so(4,4), and construct an SO(4,4) duality relating branches of the Rasheed-Larsen solution.