Phase structure, collective modes, and the axial anomaly in dense QCD

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dc.creatorYamamoto, Naoki
dc.creatorTachibana, Motoi
dc.creatorHatsuda, Tetsuo
dc.creatorBaym, Gordon
dc.date2007-04-20
dc.date2007-10-04
dc.date.accessioned2026-07-07T10:59:41Z
dc.date.available2026-07-07T10:59:41Z
dc.descriptionUsing a general Ginzburg-Landau effective Lagrangian, we study the topological structure and low-lying collective modes of dense QCD having both chiral and diquark condensates, for two and three massless flavors. As we found earlier, the QCD axial anomaly acts as an external field applied to the chiral condensate in a color superconductor and, as a new critical point emerges, leads to a crossover between the broken chiral symmetry and color superconducting phases. At intermediate densities where both chiral and diquark condensates are present, we derive a generalized Gell-Mann- Oakes-Renner relation between the masses of pseudoscalar bosons and the magnitude of the chiral and diquark-condensates. We show explicitly the continuity of the ordinary pion at low densities to a generalized pion at high densities.
dc.description24 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0704.2654
dc.identifierhttp://arxiv.org/abs/0704.2654
dc.identifierPhys.Rev.D76:074001,2007
dc.identifierdoi:10.1103/PhysRevD.76.074001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187485
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePhase structure, collective modes, and the axial anomaly in dense QCD
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