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Numerical Determination of the Distribution of Energies for the XY-model

Salazar, Rafael; Toral, Raul; Plastino, A.R.
Physica A 305, 144 (2002)

We compute numerically the distribution of energies $Omega(E,N)$ for the XY--model with short--range and long--range interactions. We find that in both cases the distribution can be fitted to the functional form: $Omega(E,N)sim exp(N phi(E,N))$, with $phi(E,N)$ an intensive function of the energy.

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