Summary
We verify explicitly the positive-definiteness property of the two-point correlations of the bidimensional Ising model in the scaling limit atT≠T c. In the scaling limit atT=T c we give a representation of the aligned correlations in terms of Gaussian expectation values of exponentials of free fields.
Riassunto
Si verificano esplicitamente le positività delle funzioni di correlazione a due punti del modello di Ising bidimensionale nel limite di scala aT≠T c. Si dà inoltre una rappresentazione in termini di campi liberi del limite di scala aT=T c delle correlazioni di spin allineati.
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Research partially supported by a NATO fellowship and National Science Foundation under Grant PHY-77-18762.
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Nappi, C.R. On the scaling limit of the Ising model. Nuov Cim A 44, 392–400 (1978). https://doi.org/10.1007/BF02812980
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DOI: https://doi.org/10.1007/BF02812980