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 [10.1103/PhysRevD.72.065003].

The renormalized and Renormalization - Group invariant Hartree - Fock approximation

DESTRI, CLAUDIO;
2005-09-06

Abstract

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.
Articolo in rivista - Articolo scientifico
Quantum field theory
English
PACS: 11.10.Ef, 11.10.Gh, 11.15.Pg
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 [10.1103/PhysRevD.72.065003].
Destri, C; Sartirana, A
File in questo prodotto:
File Dimensione Formato  
PRD72-065003.pdf

accesso aperto

Tipologia di allegato: Other attachments
Dimensione 357.19 kB
Formato Adobe PDF
357.19 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/4501
Citazioni
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
Social impact