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 …

[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 …

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 …

Emergent dynamics of a generalized Lohe model on some class of Lie groups

SY Ha, D Ko, SW Ryoo - Journal of Statistical Physics, 2017 - Springer
We introduce a Lohe group which is a new class of matrix Lie groups and present a
continuous dynamical system for the synchronization of group elements in a Lohe group …

On equilibria and consensus of the Lohe model with identical oscillators

J Zhang, J Zhu, C Qian - SIAM Journal on Applied Dynamical Systems, 2018 - SIAM
Equilibria and consensus dynamics of the Lohe model with identical oscillators are
investigated under more general interconnection topologies. In the existing literatures on the …

Remarks on the complete synchronization of Kuramoto oscillators

SY Ha, HK Kim, J Park - Nonlinearity, 2015 - iopscience.iop.org
We present an improved exponential frequency synchronization estimate for globally
coupled Kuramoto oscillators. For a sufficiently large coupling, it is numerically observed that …

Emergent behaviors of Lohe tensor flocks

SY Ha, H Park - Journal of Statistical Physics, 2020 - Springer
We present a new aggregation model on the space of rank-m tensors with the same size,
and study emergent dynamics of the proposed model. Our proposed new aggregation …