Speaker
Ms
Réka Ágnes Vig
(University of Debrecen)
Description
It is known that at high temperature the lowest eigenmodes of the QCD Dirac
operator become localized. Since these localized modes appear around the cross-over
temperature it is natural to ask how they are related to deconfinement and
chiral symmetry restoration. The simplest question one can ask in this connection is
whether deconfinement and the appearance of localization happen at the same temperature.
However, in QCD there is no sharply defined critical temperature since the transition is only a crossover. In contrast, having a well defined phase transition temperature, the
quenched theory naturally lends itself to studying whether localization
and deconfinement really happen at the same temperature. We analyze the statistics
of staggered and overlap Dirac spectra on quenched SU(3) ensembles at several temperatures
just above T_c. We precisely determine the temperature where localized
modes appear in the Dirac spectrum and compare this temperature with that of the
deconfinement transition.
Primary author
Ms
Réka Ágnes Vig
(University of Debrecen)
Co-author
Prof.
Tamas G. Kovacs
(Institute for Nuclear Physics)