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Phenomenological model for symmetry breaking in a chaotic system
Faculty
Science
Year:
2004
Type of Publication:
Article
Pages:
Authors:
SIMBEL, MH, Abul-Magd, AY
DOI:
10.1103/PhysRevE.70.046218
Journal:
PHYSICAL REVIEW E AMER PHYSICAL SOC
Volume:
70
Research Area:
Physics
ISSN
ISI:000225689600061
Keywords :
Phenomenological model , symmetry breaking , , chaotic system
Abstract:
We assume that the energy spectrum of a chaotic system undergoing symmetry-breaking transitions can be represented as a superposition of independent level sequences, one increasing at the expense of the others. The relation between the fractional level densities of the sequences and the symmetry-breaking interaction is deduced by comparing the asymptotic expression of the level-number variance with the corresponding expression obtained using the perturbation theory. This relation is supported by a comparison with previous numerical calculations. The predictions of the model for the nearest-neighbor-spacing distribution and the spectral rigidity are in agreement with the results of an acoustic resonance experiment.
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