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Continuum limit ofZ N spin systems

Непрерывный предел для систем со спиномZ N

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Il Nuovo Cimento A (1965-1970)

Summary

The Euclidean-invariant content of globally symmetricZ N models (N≥4) in the neighbourhood of the critical point is identified with a two-componentϕ 4 field theory. The analysis is based on a loopwise expansion for the generating functional of vertex functions around its mean-field approximation.

Riassunto

Si identifica il contenuto invariante euclideo dei modelli globalmente simmetriciZ N (N≥4) nell’intorno del punto critico con una teoria di campo a due componentiϕ 4. Si basa l’analisi su un’espansione ad anello per il funzionale generatore delle funzioni di vertice intorno alla sua approssimazione di campo medio.

Резюме

Эвклидово инвариантное содержание глобально симметричныхZ N моделей (N≥4) в окрестности критической точки отождествляется с двух-компонентнойϕ 4 полевой теорией. Предложенный анализ основывается на разложении для производящего функционала вершиной функции относительно приближения среднего поля.

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References

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Camacho, A.G., Socolovsky, M. Continuum limit ofZ N spin systems. Nuov Cim A 82, 107–123 (1984). https://doi.org/10.1007/BF02776047

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  • DOI: https://doi.org/10.1007/BF02776047

PACS. 11.10.

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