Emergence: Key physical issues for deeper philosophical inquiries
  A sketch of three senses of emergence and a suggestive view on the emergence of time and the direction of time is presented. After trying to identify which issues philosophers interested in emergent phenomena in physics view as important I make several observations pertaining to the concepts, methodology and mechanisms required to understand emergence and describe a platform for its investigation. I then identify some key physical issues which I feel need be better appreciated by the philosophers in this pursuit. I end with some comments on one of these issues, that of coarse-graining and persistent structures. 
Bei-Lok Hu
physics.hist-ph cond-mat.stat-mech gr-qc hep-th quant-ph