Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/12423
O(N)-symmetric (lambda)(phi)4 theory: the gaussin effective potential approach
Títol de la revista
Director/Tutor
Contribució addicional
ISSN de la revista
Títol del volum
Resum
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.
Recurs relacionat
Matèries (anglès)
Citació
Citació
STEVENSON, P. M., ALLÉS, B. and TARRACH, R. O(N)-symmetric (lambda)(phi)4 theory: the gaussin effective potential approach. Physical Review D. 1987. Vol. 35, num. 8, pags. 2407-2414. ISSN 0556-2821. [consulted: 29 of October of 2026]. Available at: https://hdl.handle.net/2445/12423