4 papers
Ashkin-Teller model with antiferromagnetic four-spin interactions: Interference effect between two conflicting issues
Cook Hyun Kim, Hoyun Choi, Joonsung Jung +1
Spin systems have emerged as powerful tools for understanding collective phenomena in complex systems. In this work, we investigate the Ashkin--Teller (AT) model on random scale-fr…
Cluster-Mediated Synchronization Dynamics in Globally Coupled Oscillators with Inertia
Cook Hyun Kim, Jinha Park, Young Jin Kim +3
Globally coupled oscillator systems with inertia exhibit complex synchronization patterns, among which the emergence of a couple of secondary synchronized clusters (SCs) in additio…
From Spatial to Spectral: Network Renormalization via Dynamical Correlations
Cook Hyun Kim, B. Kahng
Network renormalization has traditionally relied on spatial adjacency-grouping nearby nodes together, but this approach fails to capture the dynamical correlations that govern syst…
Optimal location of reinforced inertia to stabilize power grids
Sangjoon Park, Cook Hyun Kim, B. Kahng
The increasing adoption of renewable energy sources has significantly reduced the inertia in the modernized power grid, making the system more vulnerable. One way to stabilize the…