1 citations · 2 across the 6 of their papers we have counts for
7 papers
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…
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…
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…
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…