Dr. Felix Ritort is Professor of condensed matter physics at the University of Barcelona, Spain. His Ph.D., received in 1991, was on spin glasses. He has made several contributions to the field of statistical physics of disordered systems, nonequilibrium systems and, more recently, to biophysics. Currently he runs a single-molecule lab in Barcelona where he investigates questions related to the nonequilibrium physics of small systems.
Small nonequilibrium systems behave quite unexpectedly when in contact with a thermal reservoir. However, all of them—from molecular machines to molecular magnets—are described by a single fluctuation theorem.