Color Confinement and Dual Superconductivity in Full QCD

Carmona, J. M.; D’Elia, Massimo; Debbio, Luigi Del; Giacomo, A. Di; Lucini, Biagio; Paffuti, Giampiero; Pica, Claudio

doi:10.1142/9789812704269_0030

Cited by 10 publications

(15 citation statements)

References 8 publications

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“…[8][9][10] it has been shown that µ is different from zero in the confined phase of SU (2) and SU(3) pure gauge theories, that it goes to zero at the deconfining phase transition, and that this is independent of the abelian projection chosen to define the magnetic charge. The same has also been verified in the case of full QCD [11].…”

Section: Introductionsupporting

confidence: 68%

The deconfining phase transition in full QCD with two dynamical flavors

Cea

Cosmai

D’Elia

2004

J. High Energy Phys.

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We investigate the deconfining phase transition in SU(3) pure gauge theory and in full QCD with two flavors of staggered fermions. The phase transition is detected by measuring the free energy in presence of an abelian monopole background field. In the pure gauge case our finite size scaling analysis is in agreement with the well known presence of a weak first order phase transition. In the case of 2 flavors full QCD we find, using the standard pure gauge and staggered fermion actions, that the phase transition is consistent with weak first order, contrary to the expectation of a crossover for not too large quark masses and in agreement with results obtained by the Pisa group.

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Section: Introductionsupporting

confidence: 68%

The deconfining phase transition in full QCD with two dynamical flavors

Cea

Cosmai

D’Elia

2004

J. High Energy Phys.

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“…µ is indeed a disorder parameter for the deconfining phase transition. This analysis has been extended to full QCD with similar results [10,11] and an extension to SU(N ) is on the way [12]. In the full QCD case the Polyakov line is not an order parameter and the transition is indicated by a drop of the chiral condensate, which is not either an order parameter at non-zero quark mass, so that µ is the only available (dis)order parameter and could provide a genuine criterion for confinement.…”

Section: Introductionmentioning

confidence: 97%

Magnetic charge superselection in the deconfined phase of Yang-Mills theory

2004

Self Cite

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The vacuum expectation value of an operator carrying magnetic charge is studied numerically for temperatures above the deconfinement temperature in SU(2) and SU(3) gauge theory. By analyzing its finite size behaviour, this is found to be exactly zero in the thermodynamical limit for any T > Tc whenever the magnetic charge of the operator is different from zero. These results show that magnetic charge is superselected in the hot phase of quenched QCD.

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“…Our conclusion is that dual superconductivity is the mechanism of confinement. The disorder parameter µ detects it, both in pure gauge and in full QCD 20 , as expected in the philosophy of N C → ∞: indeed quark loops are non leading in that expansion, and the mechanism of confinement is expected to be the same with and without quarks. A carefull analysis of the relation between µ and the chiral order parameter is on the way.…”

Section: Discussionmentioning

confidence: 56%