23 citations · 79 across the 12 of their papers we have counts for
12 papers
Dynamic heterogeneity in sodium silicate melts via machine-learning potential
Kumpei Shiraishi, Rikuta Nozawa, Emi Minamitani
We present a comprehensive characterisation of dynamic heterogeneity in sodium silicate melts using molecular dynamics simulation with machine-learning potentials. By studying sodi…
Topological descriptor for interpretable thermal transport prediction in amorphous graphene
Kosuke Yamazaki, Takuma Shiga, Kumpei Shiraishi +1
Understanding and predicting thermal transport in disordered materials remains a significant challenge due to the absence of periodicity and the complex nature of medium-range stru…
Critical fluctuations of elastic moduli in jammed solids
Kumpei Shiraishi, Hideyuki Mizuno
We investigate sample-to-sample fluctuations of the shear modulus in ensembles of particle packings near the jamming transition. Unlike the average modulus, which exhibits distinct…
Benchmarking thermostat algorithms in molecular dynamics simulations of a binary Lennard-Jones glass-former model
Kumpei Shiraishi, Emi Minamitani, Kang Kim
A systematic comparison was carried out to assess the influence of representative thermostat methods in constant-temperature molecular dynamics simulations. The thermostat schemes…
Characterising the slow dynamics of the swap Monte Carlo algorithm
Kumpei Shiraishi, Ludovic Berthier
The swap Monte Carlo algorithm introduces non-physical dynamic rules to accelerate the exploration of the configuration space of supercooled liquids. Its success raises deep questi…
Particle pinning as a method to manipulate marginal stability
Kumpei Shiraishi, Yusuke Hara
We study the critical behavior of low-frequency vibrations of packings with pinned particles near the jamming point. Soft modes form a plateau in the density of states and its freq…
Non-phononic density of states of two-dimensional glasses revealed by random pinning
Kumpei Shiraishi, Hideyuki Mizuno, Atsushi Ikeda
The vibrational density of states of glasses is considerably different from that of crystals. In particular, there exist spatially localized vibrational modes in glasses. The densi…
Johari-Goldstein relaxation in glassy dynamics originates from two-scale energy landscape
Kumpei Shiraishi, Hideyuki Mizuno, Atsushi Ikeda
Supercooled liquids undergo complicated structural relaxation processes, which have been a long-standing problem in both experimental and theoretical aspects of condensed matter ph…
Low-Frequency Vibrational States in Ideal Glasses with Random Pinning
Kumpei Shiraishi, Yusuke Hara, Hideyuki Mizuno
Glasses exhibit spatially localized vibrations in the low-frequency regime. These localized modes emerge below the boson peak frequency , and their vibrational densiti…
Instantaneous normal modes of glass-forming liquids during the athermal relaxation process of the steepest descent algorithm
Masanari Shimada, Kumpei Shiraishi, Hideyuki Mizuno +1
Understanding glass formation by quenching remains a challenge in soft condensed matter physics. Recent numerical studies on steepest descent dynamics, which is one of the simplest…
Mechanical and Vibrational Properties of Three-Dimensional Dimer Packings Near the Jamming Transition
Kumpei Shiraishi, Hideyuki Mizuno, Atsushi Ikeda
We comprehensively study mechanical and vibrational properties of dimer packings in three-dimensional space with particular attention on critical scaling behaviors near the jamming…
Vibrational properties of two-dimensional dimer packings near the jamming transition
Kumpei Shiraishi, Hideyuki Mizuno, Atsushi Ikeda
Jammed particulate systems composed of various shapes of particles undergo the jamming transition as they are compressed or decompressed. To date, sphere packings have been extensi…