18 citations · 51 across the 14 of their papers we have counts for
7 papers · 1 filter
A Shy Voter Model: Entropy Flux in Opinion Formation
Cook Hyun Kim, Sangjoon Park, B. Kahng
Some voters conceal their opinions, causing a mismatch between visible and private opinions in polls. Conventional voter models do not account for such concealment. Here, we introd…
Migration Flows: Population Scaling and Heavy Tails
Cook Hyun Kim, Sangjoon Park, Seoyoung Jin +1
We show how migration between counties in different cities can explain both the population scaling of mean intercity flows and heavy-tailed intercity net-flow distributions. Densit…
Exact diffusion coefficients for quantum--classical hybrid walks
Cook Hyun Kim, Jaesub Park, Namshik Han
One-dimensional quantum--classical hybrid walks are introduced by combining quantum and classical steps under periodic and random protocols. Exact diffusion coefficients are derive…
Synchronization Pathways and Resilience in Power Grids
Cook Hyun Kim, Jihye Kim, Sangjoon Park +1
Ensuring a sustainable energy supply requires maintaining power-grid stability. Rotor dynamics are governed by the swing equation, which takes the form of a second-order Kuramoto m…
Heterogeneous Network Topology Induces the Widom Line
Cook Hyun Kim, B. Kahng
The Widom line, initially identified as a crossover line between liquid-like and gas-like behavior in water and supercritical fluids, separates these two types of behavior. Here, w…
Paths to synchronization in the Kuramoto model with inertia
Cook Hyun Kim, Yeomoon Kim, Stefano Boccaletti +1
Synchronization is ubiquitous across natural and synthetic systems, yet most prior studies focus on the inertia-free Kuramoto model and do so at the macroscopic level. In this stud…
Phase lag enhances synchronization in coupled oscillators with inertia
Sudo Yi, Cook Hyun Kim, Heetae Kim +1
The second-order Kuramoto model with inertia exhibits different dynamical behaviors than the first-order KM without inertia. A central difference is its lower synchronization due t…