40 citations · 328 across the 25 of their papers we have counts for
24 papers
Validity of annealed approximation in a high-dimensional system
Jaegon Um, Hyunsuk Hong, Hyunggyu Park
This study investigates the suitability of the annealed approximation in high-dimensional systems characterized by dense networks with quenched link disorder, employing models of c…
Correlation between concurrence and mutual information
Yong Kwon, Seung Ki Baek, Jaegon Um
We investigate a two-qubit system to understand the relationship between concurrence and mutual information, where the former determines the amount of quantum entanglement, whereas…
Coherence enhanced quantum-dot heat engine
Jaegon Um, Konstantin E. Dorfman, Hyunggyu Park
We show that quantum coherence can enhance the performance of a continuous quantum heat engine in the Lindblad description. We investigate the steady-state solutions of the particl…
Exactly solvable two-terminal heat engine with asymmetric Onsager coefficients: Origin of the power-efficiency bound
Jae Sung Lee, Jong-Min Park, Hyun-Myung Chun +2
An engine producing a finite power at the ideal (Carnot) efficiency is a dream engine, which is not prohibited by the thermodynamic second law. Some years ago, a two-terminal heat…
Effective potential approach to hybrid synchronization transitions
Je Ung Song, Jaegon Um, Jinha Park +1
The Kuramoto model exhibits different types of synchronization transitions depending on the type of natural frequency distribution. To obtain these results, the Kuramoto self-consi…
Nonequilibrium phase transition in an open quantum spin system with long-range interaction
Minjae Jo, Jaegon Um, B. Kahng
We investigate a nonequilibrium phase transition in a dissipative and coherent quantum spin system using the quantum Langevin equation and mean-field theory. Recently, the quantum…