نتایج جستجو برای: finite size scaling

تعداد نتایج: 853200  

2000
N. Tonchev

We study the first-order phase transition in the model of a simple perceptron with continuous weights and large, but finite value of the inputs. Making the analogy with the usual finite-size physical systems, we calculate the shift and the rounding exponents near the transition point. In the case of a general perceptron with larger variety of outputs, the analysis gives only bounds for the expo...

2008
Sergio Caracciolo Andrea Gambassi Massimiliano Gubinelli Andrea Pelissetto

We address the problem of the definition of the finite-volume correlation length. First, we study the large-N limit of the N -vector model, and we show the existence of several constraints on the definition if regularity of the finite-size scaling functions and correct anomalous behaviour above the upper critical dimension are required. Then, we study in detail a model in which the zero mode in...

Journal: :Brazilian Journal of Physics 2003

Journal: :Zeitschrift für Naturforschung A 2020

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