Quantum chaos in the Yang-Mills-Higgs system at finite temperature
Physics Department University of Alberta, T6G 2J1, Edmonton, Alberta, Canada
2 TRIUMF, 4004 Wersbrook Mall, V6T2A3, Vancouver, British Columbia, Canada
3 Heat Physics Department of the Uzbek Academy of Sciences, 28 Katartal St., 700135, Tashkent, Uzbekistan
4 Universidade be Brasilia, Instituto de Fisica, DF 70910-900, Brasilia, Brazil
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Quantum chaos in the finite-temperature Yang-Mills-Higgs system is studied. The energy spectrum of a spatially homogeneous SU(2) Yang-Mills-Higgs system is calculated within thermofield dynamics. Level statistics of the spectra is studied by plotting nearest-level spacing distribution histograms. It is found that finite-temperature effects lead to a strengthening of chaotic effects, i.e. a spectrum which has the Poissonian distribution at zero temperature has the Gaussian distribution at finite temperature.
© Springer-Verlag, 2005