Physics – Mathematical Physics
Scientific paper
2000-03-13
J.Math.Phys. 43 (2002) 351-372
Physics
Mathematical Physics
30 pages, Latex, a more detailed discussion in section 7 as to possible scaling behavior of l-point functions
Scientific paper
10.1063/1.1424474
We develop an alternative approach to this field, which was to a large extent developed by Verbeure et al. It is meant to complement their approach, which is largely based on a non-commutative central limit theorem and coordinate space estimates. In contrast to that we deal directly with the limits of $l$-point truncated correlation functions and show that they typically vanish for $l\geq 3$ provided that the respective scaling exponents of the fluctuation observables are appropriately chosen. This direct approach is greatly simplified by the introduction of a smooth version of spatial averaging, which has a much nicer scaling behavior and the systematic developement of Fourier space and energy-momentum spectral methods. We both analyze the regime of normal fluctuations, the various regimes of poor clustering and the case of spontaneous symmetry breaking or Goldstone phenomenon.
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