Vehicular traffic, crowds, and swarms: From kinetic theory and multiscale methods to applications and research perspectives

G Albi, N Bellomo, L Fermo, SY Ha, J Kim… - … Models and Methods …, 2019 - World Scientific
This paper presents a review and critical analysis on the modeling of the dynamics of
vehicular traffic, human crowds and swarms seen as living and, hence, complex systems. It …

Collective synchronization of classical and quantum oscillators

SY Ha, D Ko, J Park, X Zhang - EMS Surveys in Mathematical Sciences, 2016 - ems.press
Synchronization of weakly coupled oscillators is ubiquitous in biological and chemical
complex systems. Recently, research on collective dynamics of many-body systems has …

On the complete phase synchronization for the Kuramoto model in the mean-field limit

D Benedetto, E Caglioti, U Montemagno - arxiv preprint arxiv:1407.6551, 2014 - arxiv.org
We study the Kuramoto model for coupled oscillators. For the case of identical natural
frequencies, we give a new proof of the complete frequency synchronization for all initial …

[PDF][PDF] Emergence of phase-locked states for the Kuramoto model in a large coupling regime

SY Ha, HK Kim, SY Ryoo - Communications in Mathematical …, 2016 - researchgate.net
We study the emergence of phase-locked states to the finite-dimensional Kuramoto model
from generic initial configurations which are not phase-locked states in a large coupling …

On the relaxation dynamics of Lohe oscillators on some Riemannian manifolds

SY Ha, D Ko, SW Ryoo - Journal of Statistical Physics, 2018 - Springer
We study the collective relaxation dynamics appearing in weakly coupled Lohe oscillators in
a large coupling regime. The Lohe models on the unit sphere and unitary group were …

Collective synchronization of Kuramoto-oscillator networks

J Wu, X Li - IEEE Circuits and Systems Magazine, 2020 - ieeexplore.ieee.org
Synchronization as a typical collective phenomenon emerges in many complex systems,
and has attracted world-wide attention from science, engineering, sociology, and so forth …

[HTML][HTML] Formation of phase-locked states in a population of locally interacting Kuramoto oscillators

SY Ha, Z Li, X Xue - Journal of Differential Equations, 2013 - Elsevier
In this paper, we present an asymptotic formation of phase-locked states from the ensemble
of Kuramoto oscillators with a symmetric and connected interaction topology. For a limited …

Synchronization of Kuramoto oscillators with adaptive couplings

SY Ha, SE Noh, J Park - SIAM Journal on Applied Dynamical Systems, 2016 - SIAM
We study the synchronization of Kuramoto oscillators with adaptive coupling in interacting
networks. Network dynamics preserves the sum of all incoming pairwise coupling strengths …

Systems of matrix Riccati equations, linear fractional transformations, partial integrability and synchronization

MA Lohe - Journal of Mathematical Physics, 2019 - pubs.aip.org
We partially integrate a system of rectangular matrix Riccati equations which describe the
synchronization behavior of a nonlinear complex system of N globally connected oscillators …

Asymptotic phase-locking dynamics and critical coupling strength for the Kuramoto model

SY Ha, SY Ryoo - Communications in Mathematical Physics, 2020 - Springer
We study the asymptotic clustering (phase-locking) dynamics for the Kuramoto model. For
the analysis of emergent asymptotic patterns in the Kuramoto flow, we introduce the …