2015/05/13 by M. Denissenya, Mikhail Denissenya, L. Ya. Glozman +4
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.1505.03285
6 figures
arxiv created 2015/05/13 · openalex publication_date 2015/05/13 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recently, a new symmetry of mesons has been found upon truncation of the quasi-zero modes of the Overlap Dirac operator in lattice simulations. Namely, the ρ,ρ',ω,ω',a1, b1,h1 and possibly f1 J=1 mesons get degenerate after removal of the quasi-zero modes. This emergent symmetry has been established to be SU(4)⊃ SU(2)L × SU(2)R × U(1)A. It is higher than the symmetry of the QCD Lagrangian and provides not only a mixing of quarks of given chirality in the isospin space, but also the mixing of left-handed and right-handed components. Here we study, with the Overlap Dirac operator, the isovector J=2 mesons upon the quasi-zero mode reduction and observe a similar degeneracy. This result further supports the SU(4) symmetry in mesons of given spin J ≥ 1.