On the 2-point function of the O(N) model

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dc.creatorBenitez, Federico
dc.creatorGalain, Ramon Mendez
dc.creatorWschebor, Nicolas
dc.date2007-08-01
dc.date.accessioned2026-07-07T11:41:41Z
dc.date.available2026-07-07T11:41:41Z
dc.descriptionThe self-energy of the critical 3-dimensional O(N) model is calculated. The analysis is performed in the context of the Non-Perturbative Renormalization Group, by exploiting an approximation which takes into account contributions of an infinite number of vertices. A very simple calculation yields the 2-point function in the whole range of momenta, from the UV Gaussian regime to the scaling one. Results are in good agreement with best estimates in the literature for any value of N in all momenta regimes. This encourages the use of this simple approximation procedure to calculate correlation functions at finite momenta in other physical situations.
dc.identifierhttps://arxiv.org/abs/0708.0238
dc.identifierhttp://arxiv.org/abs/0708.0238
dc.identifierPhys.Rev.B77:024431,2008
dc.identifierdoi:10.1103/PhysRevB.77.024431
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200619
dc.subjectStatistical Mechanics
dc.subjectHigh Energy Physics - Theory
dc.titleOn the 2-point function of the O(N) model
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