3 papers
gr-qc2026
A master equation for Carter-separable stationary axisymmetric spacetimes and compatible sources
Hyeong-Chan Kim
We show that the remaining diagonal Einstein equations in the Carter-projective sector of stationary axisymmetric spacetimes are equivalent to a single sourced master equation. The…
cond-mat.stat-mech2026
Thermodynamics Beyond State Functions from Quantum Relaxation
Hyeong-Chan Kim, Youngone Lee
In standard thermodynamics, internal energy is a state function, independent of process rates. We show that this structure breaks down in open quantum systems undergoing thermaliza…
cond-mat.stat-mech2024
Temperature upper bound of an ideal gas
Hyeong-Chan Kim
We study thermodynamics of a heat-conducting ideal gas system. The study is based on i) the first law of thermodynamics from action formulation which expects heat-dependence of ene…