2006/03/28 by Dominik Nickel, Jochen Wambach, J. Wambach +1 · 3 citations
Physics and Astronomy · #Color superconductivity #Condensed matter physics #Coupling (piping) #Gauge (firearms) #Gauge theory #High-Energy Particle Collisions Research #Mathematical physics #Pairing #Particle physics #Physics #Physics of Superconductivity and Magnetism #Propagator #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Quasiparticle #Strange matter #Superconductivity #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.73.114028
published as Phys.Rev. D73 (2006) 114028 · 14 pages, 9 figures; v2: one reference added
arxiv created 2006/03/28 · openalex publication_date 2006/06/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The chirally unbroken and the color-superconducting 2SC and CFL phases are investigated in the chiral limit within a Dyson-Schwinger approach for the quark propagator in QCD. The hierarchy of Green's functions is truncated such that at vanishing density known results for the vacuum and at asymptotically high densities the corresponding weak-coupling expressions are recovered. The anomalous dimensions of the gap functions are analytically calculated. Based on the quark propagator the phase structure is studied, and results for the gap functions, occupation numbers, coherence lengths, and pressure differences are given and compared with the corresponding expressions in the weak-coupling regime. At moderate chemical potentials the quasiparticle pairing gaps are several times larger than the extrapolated weak-coupling results.