Speaker
Prof.
Leonid Glozman Glozman
(University of Graz)
Description
Using the overlap Dirac operator we remove its
lowest-lying eigenmodes from the valence quark
propagators and study evolution of the J=1 meson
masses. At the truncation energy about 50 MeV we
observe a degeneracy of all possible U(2)_L * U(2)_R
multiplets, i.e. the observed quantum levels have
a symmetry larger than U(2)_L * U(2)_R and their
energy does not depend on the spin orientation of quarks
and their parities. We interpret these energy levels
as the quantum levels of a dynamical QCD string that
connects the ultrarelativistic quark and antiquark.
Primary author
Prof.
Leonid Glozman Glozman
(University of Graz)
Co-authors
Prof.
Christian Lang
(University of Graz)
Mr
Mikhail Denissenya
(University of Graz)
