Power Spectrum of Long Eigenlevel Sequences in Quantum Chaotic Systems

Abstract

We present a non-perturbative analysis of the power-spectrum of energy level fluctuations in fully chaotic quantum structures. Focussing on systems with broken time-reversal symmetry, we employ a finite-$N$ random matrix theory to derive an exact multidimensional integral representation of the power-spectrum. The $N\to \infty$ limit of the exact solution furnishes the main result of this study -- a universal, parameter-free prediction for the power-spectrum expressed in terms of a fifth Painlevé transcendent. Extensive numerics lends further support to our theory which, as discussed at length, invalidates a traditional assumption that the power-spectrum is merely determined by the spectral form factor of a quantum system.

5 pages, 1 fugure; PRL Editors' Suggestion

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• Semiclassical Foundation of Universality in Quantum Chaos
• Periodic-Orbit Theory of Level Correlations
• Periodic-orbit theory of universal level correlations in quantum chaos
• Power spectrum analysis and missing level statistics of microwave graphs with violated time reversal invariance
• Spectral statistics of molecular resonances in erbium isotopes: How chaotic are they?
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