Abstract
We introduce the boson and the fermion point processes from the elementary quantum mechanical point of view. That is, we consider quantum statistical mechanics of the canonical ensemble for a fixed number of particles which obey Bose-Einstein, Fermi-Dirac statistics, respectively, in a finite volume. Focusing on the distribution of positions of the particles, we have point processes of the fixed number of points in a bounded domain. By taking the thermodynamic limit such that the particle density converges to a finite value, the boson/fermion processes are obtained. This argument is a realization of the equivalence of ensembles, since resulting processes are considered to describe a grand canonical ensemble of points. Random point processes corresponding to para-particles of order two are discussed as an application of the formulation. Statistics of a system of composite particles at zero temperature are also considered as a model of determinantal random point processes.
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Communicated by J.L. Lebowitz
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Tamura, H., Ito, K. A Canonical Ensemble Approach to the Fermion/Boson Random Point Processes and Its Applications. Commun. Math. Phys. 263, 353–380 (2006). https://doi.org/10.1007/s00220-005-1507-2
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DOI: https://doi.org/10.1007/s00220-005-1507-2