We study the renormalization problem for the Hartree-Fock approximation of the O(N) invariant 4 model in the symmetric phase and show how to systematically improve the corresponding diagrammatic resummation to achieve the correct renormalization properties of the effective field equations, including renormalization-group invariance with the one-loop beta function. These new Hartree-Fock dynamics is still of a mean-field type but includes memory effects which are generically nonlocal also in space. © 2005 The American Physical Society.
Destri, C., & Sartirana, A. (2005). The renormalized and Renormalization - Group invariant Hartree - Fock approximation. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(6), 065003.
Citazione: | Destri, C., & Sartirana, A. (2005). The renormalized and Renormalization - Group invariant Hartree - Fock approximation. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 72(6), 065003. |
Tipo: | Articolo in rivista - Articolo scientifico |
Carattere della pubblicazione: | Scientifica |
Titolo: | The renormalized and Renormalization - Group invariant Hartree - Fock approximation |
Autori: | Destri, C; Sartirana, A |
Autori: | |
Data di pubblicazione: | 6-set-2005 |
Lingua: | English |
Rivista: | PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.72.065003 |
Appare nelle tipologie: | 01 - Articolo su rivista |
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