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Large Deviations for the Bose--Einstein Condensate of the Ideal Gas in the Canonical Ensemble

Andreas Deuchert, Xuanyu Li

Source record

Source: arXiv

Published: Aug 26, 2026

arXiv: 2608.26378

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Source abstract

We consider a non-interacting Bose gas governed by a general one-particle Hamiltonian in the canonical ensemble. Our main results are large-deviation estimates for the number of particles in the Bose--Einstein condensate. We show that the left- and right-tail probabilities decay at different exponential rates as the number of particles tends to infinity.

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