Speaker
Prof.
Tamas G. Kovacs
(Institute for Nuclear Physics)
Description
At high temperature part of the spectrum of the quark Dirac operator is known
to consist of localized states. This comes about because around the cross-over
temperature to the quark-gluon plasma, localized states start to appear at the
low end of the spectrum and as the system is further heated, states higher up
in the spectrum also get localized. Since localization and the crossover to
the chirally restored phase happen around the same temperature, the question
of how the two phenomena are connected naturally arises. Here we speculate on
the nature of possible gauge configurations that could support localized quark
eigenmodes. In particular, by analyzing eigenmodes of the staggerd and overlap
Dirac operator we check whether a dilute gas of calorons or other forms of
topological charge can play a major role in localization.
Primary author
Prof.
Tamas G. Kovacs
(Institute for Nuclear Physics)
Co-author
Ms
Réka Ágnes Vig
(University of Debrecen)