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High Energy Physics - Phenomenology

arXiv:hep-ph/0502146 (hep-ph)
[Submitted on 16 Feb 2005 (v1), last revised 11 May 2005 (this version, v2)]

Title:Gapless Hartree-Fock Resummation Scheme for the O(N) Model

Authors:Yu. B. Ivanov (1 and 2), F. Riek (2), J. Knoll (2) ((1) Kurchatov Institute, (2) Darmstadt, GSI)
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Abstract: A modified selfconsistent Hartree-Fock approximation to the lambda*phi^4 theory with spontaneously broken O(N) symmetry is proposed. It preserves all the desirable features, like conservation laws and thermodynamic consistency, of the selfconsistent Dyson scheme generated from a 2PI functional, also known as the Phi-derivable scheme, while simultaneously respecting the Nambu-Goldstone theorem in the chiral-symmetry broken phase. Various approximate resummation schemes are discussed.
Comments: 13 pages, 10 figures / Version accepted by Phys. Rev. D: the introduction has been expanded by a few remarks in order to further clarify the goal of the paper
Subjects: High Energy Physics - Phenomenology (hep-ph); Other Condensed Matter (cond-mat.other); Nuclear Theory (nucl-th)
Cite as: arXiv:hep-ph/0502146
  (or arXiv:hep-ph/0502146v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0502146
Journal reference: Phys.Rev. D71 (2005) 105016
Related DOI: https://doi.org/10.1103/PhysRevD.71.105016

Submission history

From: Felix Riek [view email]
[v1] Wed, 16 Feb 2005 10:16:05 UTC (41 KB)
[v2] Wed, 11 May 2005 11:50:25 UTC (42 KB)
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