@article{b3251e8416ae4864a81d534afd96d515,
title = "A mechanism for quark confinement",
abstract = "Euclidean field configurations carrying half integral topological charge, merons, can, unlike ordinary instantons, confine quarks at moderate coupling g. Logarithmic interactions between merons prevent isolated ones from existing for small g. However, in four dimensional QCD a crude calculation indicates a phase transition to a quark confining plasma at an effective coupling g2 4π2 ≈ 1 4.",
author = "Allan, {Curtis G.} and Roger Dashen and Gross, {David J.}",
note = "Funding Information: Until now attention has focused on the {"}instanton{"} solution of Euclidean Yang-Mills theory discovered by Belavin et al. \[2\],w hich minimizes the action in the sector with Pontryagin index one. This solution was understood to be an indication of vacuum tunneling \[3-5\] between an inffmite number of classically degenerate stable vacua. Thus instanton configurations are of fundamental nnportance no matter how small the coupling is. One must take them into account in order to construct the correct vacuum, which is a coherent superposition of the classical vacua, labeled by a continuous parameter 101 ~< 7r \[4-6\].T he main physical implications of this vacuum degeneracy has been the effect on fermionic symmetries. It was realized that in a 0 vacuum, axial baryon number symme- * Partially supported by ERDA Grant No. E(11-1)2200 and the National Science Foundation under Grant No. MPS75-22514. 1 On leave from Princeton University. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",
year = "1977",
month = feb,
day = "14",
doi = "10.1016/0370-2693(77)90019-3",
language = "English (US)",
volume = "66",
pages = "375--381",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier",
number = "4",
}