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Instantons and chiral symmetry breaking in SU(N) gauge theories

โœ Scribed by N. Cundy; M. Teper; U. Wenger

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
266 KB
Volume
119
Category
Article
ISSN
0920-5632

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โœฆ Synopsis

We address the question of whether the low modes of the Dirac operator are caused by topological objects such as instantons in SU(N) gauge theories. We study the pseudo-scalar density of these modes, finding the size distributions of the instantons, and comparing it with the underlying gauge field. We find that, although the near-zero modes of the Dirac operator depend on topology for all N, their small instanton content decreases as N increases.

๐Ÿ“œ SIMILAR VOLUMES

Instanton effects and chiral symmetry br
Instanton effects and chiral symmetry breaking in QCD2
โœ Hugo R. Christiansen ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 452 KB

In this paper we discuss the spontaneous breakdown of chiral symmetry in Quantum Chromodynamics by considering gluonic instanton configurations in the partition function. It is shown that in order to obtain nontrivial fermionic correlators in a two dimensional gauge theory for the strong interaction