Séminaire de Physique Théorique

How Many is Different? Ideal Bose gas revisited
Jeong-Hyuck Park (Sogang University, Seoul)
Thursday 05 July 2012 14:00 -  Tours -  Salle 1180 (Bât E2)

Résumé :
We revisit the ideal Bose gas confined in a cubic box, which is discussed in most of statistical physics textbooks as the simplest bosonic system. We report that, the isobar of the ideal gas zigzags on the temperature-volume plane provided the number of particles is finitely large enough. This may demonstrate for the first time, how finite systems can feature mathematical singularities, realizing the notion of `Emergence'. Links to papers: http://pra.aps.org/abstract/PRA/v81/i6/e063636 (Canonical Ensemble, Numerical work) http://iopscience.iop.org/1367-2630/13/3/033003/ (Video abstract included) http://pra.aps.org/abstract/PRA/v84/i2/e023636 (Analytic proof)

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