Asymptotic forms for hard and soft edge general $β$ conditional gap probabilities

Details Asymptotic forms for hard and soft edge general $β$ conditional gap probabilities Asymptotic forms for hard and soft edge general $β$ conditional gap probabilities

2011-10-19

arxiv.org/abs/1110.4284v3

Physics

Mathematical Physics

Replaces v2 which contains typographical errors arising from a previous unpublished draft

Scientific paper

An infinite log-gas formalism, due to Dyson, and independently Fogler and Shklovskii, is applied to the computation of conditioned gap probabilities at the hard and soft edges of random matrix $\beta$-ensembles. The conditioning is that there are $n$ eigenvalues in the gap, with $n \ll |t|$, $t$ denoting the end point of the gap. It is found that the entropy term in the formalism must be replaced by a term involving the potential drop to obtain results consistent with known asymptotic expansions in the case $n=0$. With this modification made for general $n$, the derived expansions - which are for the logarithm of the gap probabilities - are conjectured to be correct up to and including terms O$(\log|t|)$. They are shown to satisfy various consistency conditions, including an asymptotic duality formula relating $\beta$ to $4/\beta$.

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