5 citations · 8 across the 7 of their papers we have counts for
7 papers
Electromagnetism from two matter spaces: mutual helicity and the nondegenerate completion
Hyeong-Chan Kim
We show that generic Maxwell fields can be represented within the matter-space framework by introducing two independent matter-space flows. In the one-flow formulation the electrom…
Relic Magnetic Fields from Non-Adiabatic Photon Freeze-Out at Recombination
Hyeong-Chan Kim
We propose a new mechanism for generating a primordial electromagnetic relic during the recombination--decoupling transition, based on the rate-dependent thermodynamics of the cosm…
Stationary axisymmetric systems that allow for a separability structure
Hyeong-Chan Kim, Wonwoo Lee
We develop a systematic framework for formulating and solving the conditions that lead to separability in stationary, axisymmetric spacetimes in the presence of matter fields. Guid…
Local Origin of Hidden Symmetry in Rotating Spacetimes
Hyeong-Chan Kim
We show that, within a broad stationary-axisymmetric class, Kerr-type separability and hidden symmetry arise as a local consequence of the Einstein equations. Without assuming sepa…
Charged wormholes in (anti-)de Sitter spacetime
Hyeong-Chan Kim, Wonwoo Lee
We present a family of charged, traversable wormhole solutions in the presence of a cosmological constant. In de Sitter spacetime, two types of wormhole throats can exist--referred…
Dressing rotating black holes with anisotropic matter
Hyeong-Chan Kim, Wonwoo Lee
We present a new rotating black hole solution to the Einstein equations as an extension of the Kerr spacetime. Interestingly, the solution we find may not be uniquely characterized…
Charged traversable wormholes: charge without charge
Hyeong-Chan Kim, Sung-Won Kim, Bum-Hoon Lee +1
We present and investigate charged wormhole solutions of the Einstein-Maxwell equations supported by anisotropic matter fields, with the purpose of establishing their physical plau…