A Note on Large Deviations for 2D Coulomb Gas with Weakly Confining Potential

Details A Note on Large Deviations for 2D Coulomb Gas with Weakly Confining Potential A Note on Large Deviations for 2D Coulomb Gas with Weakly Confining Potential

2012-02-13

arxiv.org/abs/1202.2809v1

Mathematics

Probability

11 pages

Scientific paper

We investigate a Coulomb gas in a potential satisfying a weaker growth assumption than usual and establish a large deviation principle for its empirical measure. As a consequence the empirical measure is seen to converge towards a non-random limiting measure, characterized by a variational principle from logarithmic potential theory, which may not have compact support. The proof of the large deviation upper bound is based on a compactification procedure which may be of help for further large deviation principles.

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