Fluctuation of strongly interacting matter in Polyakov Nambu   Jona-Lasinio model in finite volume
  We have estimated the susceptibilities of conserved charges for 2-flavor strongly interacting matter with varying system sizes, using the Polyakov loop enhanced Nambu Jona-Lasinio model. The susceptibilities for vanishing baryon densities are found to show a scaling with the system volume in the hadronic as well as partonic phase. This scaling breaks down for a temperature range of about 30-50 MeV around the cross-over region. Simultaneous measurements of the various susceptibilities may thus indicate how close to the cross-over region the freeze-out occurs for the fireball created in heavy-ion collision experiments. 
Abhijit Bhattacharyya, Rajarshi Ray and Subrata Sur
hep-ph nucl-th