Stein (born August 19, 1953), American physicist, is Professor of Physics and Mathematics at New York University.
From 2006-2012 he served
as the NYU Dean of Science.
He has contributed to a wide range of scientific fields.
His early
research covered diverse topics, including theoretical work on protein
biophysics, biological evolution, amorphous semiconductors, quantum
liquids, topology of order parameter spaces, liquid crystals, neutron stars, and the interface between particle physics and cosmology.
His
primary focus, however, has been on quenched randomness in condensed matter
and on stochastic processes in both irreversible and extended systems.
His
research on these topics was cited by the American Association for the Advancement of Science as "pioneering work on the statistical mechanics of
disordered and noisy systems".
He is best known for work on hierarchical dynamics (in collaboration with
Elihu Abrahams, Philip Warren Anderson, and Richard Palmer); for observing that
protein fluctuational conformations can be modeled using spin glass
techniques; for constructing a theory of fluctuation-driven transitions in
the absence of detailed balance (in collaboration with Robert Maier); for applying stochastic methods to determine lifetimes, stability, and decay of
nanowires and nanomagnets (with a variety of collaborators); and for a
series of rigorous and analytical results (largely with Charles M.
Newman) on
short-range spin glasses, including the introduction of the Newman-Stein
metastate as a general mathematical tool for analyzing the thermodynamic
properties of disordered systems.