Levelstatistics and stochasticity in a driven quantum system |
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Authors: | H Frahm H J Mikeska |
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Institution: | (1) Institut für Theoretische Physik, Universität Hannover, Appelstrasse 2, D-3000 Hannover 1, Germany |
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Abstract: | We investigate quantum properties of one anisotropic spin driven by an external time-dependent magnetic field which shows a transition from regular to irregular dynamics with increasing field strength in the classical limit. In particular we study the statistical properties of the quasi-spectrum. Our results support the conjecture that Poisson- and GOE-statistics are to be associated with integrable and nonintegrable systems resp. in the semiclassical limit. Approaching the quantum case we observe significant deviations from GOE statistics. |
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