1995/11/30 by D. Blaschke, Yu. L. Kalinovsky, G. Röpke +4 · 1 citation
Mathematics · Physics and Astronomy · #Ansatz #Hadron #High-Energy Particle Collisions Research #Lattice (music) #Mathematical analysis #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Propagator #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Separable space #nucl-th
paper · pdf · doi:10.1103/physrevc.53.2394
published as Phys.Rev.C53:2394-2400,1996 · 19 pages, REVTeX, 5 figures
arxiv created 1996/01/21 · openalex publication_date 1996/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Previously the quark and meson properties in a many quark system at finite temperature have been studied within effective QCD approaches in the Hartree approximation. In the present paper we consider the influence of the mesonic correlations on the quark self-energy and on the quark propagator within a systematic 1/Nc expansion. Using a general separable ansatz for the nonlocal interaction, we derive a self-consistent equation for the 1/Nc correction to the quark propagator. For a separable model with cutoff form factor, we obtain a decrease of the condensate of the order of 20% at zero temperature. A lowering of the critical temperature for the onset of the chiral restoration transition due to the inclusion of mesonic correlations is obtained with results that seem to be closer to those from lattice calculations. \textcopyright 1996 The American Physical Society.