Diquarks: condensation without bound states

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dc.creatorBloch, J. C. R.
dc.creatorRoberts, C. D.
dc.creatorSchmidt, S. M.
dc.date1999-07-21
dc.date.accessioned2026-07-07T12:29:17Z
dc.date.available2026-07-07T12:29:17Z
dc.descriptionWe employ a bispinor gap equation to study superfluidity at nonzero chemical potential: mu .neq. 0, in two- and three-colour QCD. The two-colour theory, QC2D, is an excellent exemplar: the order of truncation of the quark-quark scattering kernel: K, has no qualitative impact, which allows a straightforward elucidation of the effects of mu when the coupling is strong. In rainbow-ladder truncation, diquark bound states appear in the spectrum of the three-colour theory, a defect that is eliminated by an improvement of K. The corrected gap equation describes a superfluid phase that is semi-quantitatively similar to that obtained using the rainbow truncation. A model study suggests that the width of the superfluid gap and the transition point in QC2D provide reliable quantitative estimates of those quantities in QCD.
dc.description7 pages, 3 figures, REVTEX, epsfig
dc.identifierhttps://arxiv.org/abs/nucl-th/9907086
dc.identifierhttp://arxiv.org/abs/nucl-th/9907086
dc.identifierPhys.Rev.C60:065208,1999
dc.identifierdoi:10.1103/PhysRevC.60.065208
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215823
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDiquarks: condensation without bound states
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