On first-order phase transition in microcanonical and canonical non-extensive systems

Physics – Condensed Matter – Statistical Mechanics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

10 pages, 8 figures

Scientific paper

10.1016/S0378-4371(01)00159-5

Two examples of Microcanonical Potts models, 2-dimensional nearest neighbor and mean field, are considered via exact enumeration of states and analytical asymptotic methods. In the interval of energies corresponding to a first order phase transition, both of these models exhibit a convex dip in the entropy vs energy plot and a region with negative specific heat within the dip. It is observed that in the nearest neighbor model the dip flattens and disappears as the lattice size grows, while in the mean field model the dip persists even in the limit of an infinite system. If formal transitions from microcanonical to canonical ensembles and back are performed for an infinite but non-extensive system, the convex dip in the microcanonical entropy plot disappears.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

On first-order phase transition in microcanonical and canonical non-extensive systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On first-order phase transition in microcanonical and canonical non-extensive systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On first-order phase transition in microcanonical and canonical non-extensive systems will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-72418

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.