Deconfining phase transition on a double-layered torus

TL;DR

This paper explores a double-layered torus geometry to better simulate small deconfined regions in heavy ion collisions, showing it can more realistically approach the QCD continuum limit and indicating an increased pseudo transition temperature.

Contribution

It introduces a double-layered torus geometry for lattice QCD simulations, enabling more realistic modeling of small deconfined regions with different temperatures.

Findings

Support for increased pseudo transition temperature in SU(3) gauge theory

More realistic approach to small deconfined volumes in QCD simulations

Potential improvement over periodic boundary conditions

Abstract

Deconfined regions in relativistic heavy ion collisions are limited to small volumes surrounded by a confined exterior. Here the geometry of a double layered torus is discussed, which allows for different temperatures in its two layers. This geometry enables one to approach the QCD continuum limit for small deconfined volumes with confined exteriors in a more realistic fashion than by using periodic boundary conditions. Preliminary data from a study for pure SU(3) lattice gauge theory support a substantial increase in a pseudo transition temperature.