Chiral Symmetry Breaking by Instantons

dc.creatorDiakonov, Dmitri
dc.date1996-02-23
dc.date.accessioned2026-07-07T03:58:54Z
dc.date.available2026-07-07T03:58:54Z
dc.descriptionThis is a review of the QCD instanton vacuum. After introducing instantons and their physical meaning, I show that the number of instantons in the vacuum fluctuates in accordance with the QCD trace anomaly. The main properties of the instanton ensemble are given. Chiral symmetry breaking by instantons is explained in three different though mathematically equivalent ways. In particular, a derivation of the Nambu--Jona-Lasinio-type model from instantons is presented, and the effective chiral lagrangian to which QCD is reduced at low momenta, is given. I end up by discussing possible confinement mechanisms.
dc.descriptionLectures at the Enrico Fermi School in Physics, Varenna, June 27 -- July 7, 1995, to be published in the Proceedings. LaTex, 42 p
dc.identifierhttps://arxiv.org/abs/hep-ph/9602375
dc.identifierhttp://arxiv.org/abs/hep-ph/9602375
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/46006
dc.subjectHigh Energy Physics - Phenomenology
dc.titleChiral Symmetry Breaking by Instantons
dc.typetext

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