Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Surface of Section Method: Demonstration of semiclassical
  Berry-Robnik energy level spacing distribution in a generic 2-dim Hamiltonian
  system   The recently developed quantum surface of section method is applied to a
search for extremely high-lying energy levels in a simple but generic
Hamiltonian system between integrability and chaos, namely the semiseparable
2-dim oscillator. Using the stretch of 13,445 consecutive levels with the
sequential number around $1.8\cdot 10^7$ (eighteen million) we have clearly
demonstrated the validity of the semiclassical Berry-Robnik level spacing
distribution while at 1000 times smaller sequential quantum numbers we find the
very persistent quasi universal phenomenon of power-law level repulsion which
is globally very well described by the Brody distribution.

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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: eess