Measurement-noise maximum as a signature of a phase transition.
نویسندگان
چکیده
We propose that a maximum in measurement noise can be used as a signature of a phase transition. As an example, we study the energy and magnetization noise spectra associated with first- and second-order phase transitions by using Monte Carlo simulations of the Ising model and 5-state Potts model in two dimensions. For a finite size system, the total noise power and the low frequency white noise S(f0 and the total noise power vanishes. f(-1)(knee) is approximately the equilibration time.
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عنوان ژورنال:
- Physical review letters
دوره 98 5 شماره
صفحات -
تاریخ انتشار 2007