2011/07/31 by C. B. Lang, Mario Schröck · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Chiral anomaly #Chiral perturbation theory #Chiral symmetry breaking #Dirac operator #Eigenvalues and eigenvectors #Explicit symmetry breaking #Mathematical physics #Nambu–Jona-Lasinio model #Particle physics #Particle physics theoretical and experimental studies #Physics #Propagator #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Spontaneous symmetry breaking #Symmetry (geometry) #Symmetry breaking #Theoretical physics #Valence (chemistry) #hep-lat #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.84.087704
published as Phys. Rev. D 84 (2011) 087704 · 5 pages, 5 figures (figure added, references updated)
arxiv created 2011/09/30 · openalex publication_date 2011/10/18 · arxiv updated 2015/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In quantum chromodynamics (QCD) the eigenmodes of the Dirac operator with small absolute eigenvalues have a close relationship to the dynamical breaking of the chiral symmetry. In a simulation with two dynamical quarks, we study the behavior of meson propagators when removing increasingly more of those modes in the valence sector, thus partially removing effects of chiral symmetry breaking. We find that some of the symmetry aspects are restored (e.g., the masses of \ensuremathρ and a1 approach each other) while confining properties persist.