205 citations · 3.3k across the 120 of their papers we have counts for
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Quantum dynamics in view of Einstein's theory of Brownian motion
Sumiyoshi Abe, A. K. Rajagopal
A quantum-mechanical version of Einstein's 1905 theory of Brownian motion is presented. Starting from the Hamiltonian dynamics of an isolated composite of objective and environment…
Optimality of Natural Time Representation of Complex Time Series
Sumiyoshi Abe, N. V. Sarlis, E. S. Skordas +2
The concept of natural time turned out to be useful in revealing dynamical features behind complex time series including electrocardiograms, ionic current fluctuations of membrane…
Scale-free statistics of time interval between successive earthquakes
Sumiyoshi Abe, Norikazu Suzuki
The statistical property of the calm times, i.e., time intervals between successive earthquakes with arbitrary values of magnitude, is studied by analyzing the seismic time series…
Scale-invariant statistics of the degrees of separation in directed earthquake network
Sumiyoshi Abe, Norikazu Suzuki
Discovery of a new scale-free law of earthquake phenomenon is reported. It is relevant to the structural and dynamical properties of the earthquake network proposed in a recent wor…