Tuesday, November 27, 2012

1211.6063 (Yan V. Fyodorov et al.)

Freezing Transitions and Extreme Values: Random Matrix Theory,
$ζ(1/2+it)$, and Disordered Landscapes

Yan V. Fyodorov, Jonathan P. Keating
We argue that the freezing transition scenario, previously conjectured to occur in the statistical mechanics of 1/f-noise random energy models, governs, after reinterpretation, the value distribution of the maximum of the modulus of the characteristic polynomials p_N(\theta) of large N\times N random unitary (CUE) matrices; i.e. the extreme value statistics of p_N(\theta) when N \rightarrow\infty. In addition, we argue that it leads to multifractal-like behaviour in the total length \mu_N(x) of the intervals in which |p_N(\theta)|>N^x, x>0, in the same limit. We speculate that our results extend to the large values taken by the Riemann zeta-function \zeta(s) over stretches of the critical line s=1/2+it of given constant length, and present the results of numerical computations of the large values of \zeta(1/2+it). Our main purpose is to draw attention to possible connections between extreme value problems in the statistical mechanics of 1/f-noise random energy models, random matrix theory, and the theory of the Riemann zeta function, and to the potential consequences of freezing in the latter two cases.
View original: http://arxiv.org/abs/1211.6063

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