arXiv subjects

S. Olejnik

Publications and source records attributed to S. Olejnik.

56 records · Page 4Linked to original sources

arXiv1994

Flux tubes and topological charges in finite-temperature lattice QCD

Topological properties of the vacuum were investigated in finite-temperature lattice QCD without and with dynamical quarks using a local operator of topological charge density and a variant of cooling. Below the deconfinement temperature evidence for flux tube formation was observed in the distribution of topological charge density around a static $Q\bar Q$ pair. With dynamical quarks, the flux tube breaks when the distance between the static quark and antiquark increases.

hep-lat↗

arXiv1993

On the existence of a first order phase transition at small vacuum angle $θ$ in the $CP^3$ model

We examine the phase structure of the $CP^3$ model as a function of $θ$ in the weak coupling regime. It is shown that the model has a first order phase transition at small $θ$. We pay special attention to the extrapolation of the data to the infinite volume. It is found that the critical value of $θ$ decreases towards zero as $β$ is taken to infinity.

hep-lat↗