Speaker
Vitaly Bornyakov
(IHEP)
Description
We study $N_f=2$ lattice QCD with improved Wilson fermions at imaginary chemical potential $\mu_I.$ Simulations are made in the deconfinement phase at few values of $\mu_I/T$ to study Roberge-Weiss phase transitions at $\mu_I/T = \pm \pi/3$ and $\pi$. We measure spectrum of overlap Dirac operator in background of equilibrium configurations with variable $\mu_I/T$. Numerical evidence is presented to show that Roberge-Weiss transitions are related to changes in the spectrum gap. We suggest explanation of our numerical results in terms of dyons.
Primary author
Vitaly Bornyakov
(IHEP)
