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Título:
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O(N)-symmetric (lambda)(phi)4 theory: the gaussin effective potential approach
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Autor/a:
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Stevenson, P. M.; Allés, B.; Tarrach, R., 1948-
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Otros autores:
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Universitat de Barcelona |
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Abstract:
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The O(N)-symmetric generalization of λ
φ
4
theory is studied in the Gaussian-effective-potential (GEP) approach. It is shown that the GEP encompasses and transcends the leading-order 1/N expansion results. We find two distinct, nontrivial versions of the (3+1)-dimensional theory: (i) ‘‘precarious
φ
4
theory,’’ with negative, infinitesimal
λ
B
, which coincides with the 1/N result; and (ii) ‘‘autonomous
φ
4
theory,’’ with positive, infinitesimal
λ
B
and an infinite wave-function renormalization, which is inaccessible to perturbative or 1/N methods, and could well have eluded lattice-based approaches. ‘‘Autonomous
φ
4
theory’’ can exhibit spontaneous symmetry breaking, and we speculate on its relevance for the Higgs mechanism. |
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Materia(s):
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-Teoria de camps (Física)
-Partícules (Física nuclear)
-Simetria (Física)
-Field theory (Physics)
-Particles (Nuclear physics)
-Symmetry (Physics) |
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Derechos:
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(c) The American Physical Society, 1987
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Tipo de documento:
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Artículo
Artículo - Versión publicada |
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Editor:
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The American Physical Society
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Compartir:
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