@article{ISI:000447934500001,
 abstract = {We study various properties of the vibrational normal modes for
Coulomb-interacting particles in two-dimensional irregular confinement
using numerical simulations. By analyzing the participation ratio and
spectral statistics, we characterize the vibrational modes for Coulomb
clusters as localized, quasilocalized, and delocalized. We also study a
correlation function to understand the spatial structure of these
different kinds of modes and subsequently extract the associated
characteristic length scales. We further demonstrate that, at any given
temperature, particles exhibiting larger displacement over a time
interval comparable to the structural relaxation time are strongly
correlated with the low-frequency quasilocalized modes of the inherent
structure corresponding to the initial configuration. Establishing this
correlation for Coulomb clusters paves the path to identify the
particular feature of the initial configuration that determines the
previously observed heterogeneous dynamics of the particles at low
temperatures in these systems.},
 article-number = {042134},
 author = {Ash, Biswarup and Dasgupta, Chandan and Ghosal, Amit},
 doi = {10.1103/PhysRevE.98.042134},
 eissn = {2470-0053},
 issn = {2470-0045},
 journal = {PHYSICAL REVIEW E},
 month = {OCT 22},
 number = {4},
 researcherid-numbers = {Dasgupta, Chandan/R-4852-2019},
 times-cited = {3},
 title = {Analysis of vibrational normal modes for Coulomb clusters},
 unique-id = {ISI:000447934500001},
 volume = {98},
 year = {2018}
}