Trends in condensed matter physics: is research going faster and faster?
  In this paper we study research trends in condensed matter physics. Trends are analyzed by means of the the number of publications in the different sub-fields as function of the years. We found that many research topics have a similar behavior with an initial fast growth and a next slower exponential decay. We derived a simple model to describe this behavior and built up some predictions for future trends. 
C. Attaccalite and S. Barland
physics.soc-ph cond-mat.other cs.DL