Speaker
Description
For $SU(N_c)$ gauge theories there is a first-order phase transition for $N_c \ge 3$, which signals the deconfinement of the color degrees of freedom at temperature $T_d$. However, its mechanism is not yet understood but is believed to be of topological origin. In this work we measure the topological constituents of $SU(3)$ gauge theory configurations generated using lattice techniques for different volumes and lattice spacings, using the overlap Dirac operator zero modes since it has exact chiral symmetry and an index theorem on the lattice. We focus on a temperature range from 0.9 to 1.5 $T_d$, where the Polyakov loop has non-trivial holonomy to understand the specific nature of these constituents, particularly instanton-dyons. We measure the average distance between the instanton-dyons and their correlations with the Polyakov loop. Furthermore, we measure the topological susceptibility and its higher moments using the Wilson flow technique which may allow us to isolate the contribution of the instanton-dyons towards driving (de)confinement.
