Model for QCD ground state with magnetic disorder
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(Published version)
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2010
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Szczepaniak, A.
Matevosyan, H.
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Physical Review D: Particles, Fields, Gravitation and Cosmology, 2010; 81(9):094007-1-094007-6
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Adam P. Szczepaniak and Hrayr H. Matevosyan
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Abstract
We explore an ansatz for the QCD vacuum in the Coulomb gauge that describes gauge field fluctuations in the presence of a weakly interacting gas of Abelian monopoles. Such magnetic disorder leads to longrange correlations which are manifested through the area law for the Wilson loop. In particular we focus on the role of the residual monopole-monopole interactions in providing the mechanism for suppression of the gluon propagator at low momenta which also leads to low-momentum enhancement in the ghost propagator.
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©2010 American Physical Society