Deconfining transition in two-flavor QCD

TL;DR

This paper investigates the nature of the finite-temperature phase transition in two-flavor QCD, analyzing critical behavior and dual superconductivity to understand deconfinement mechanisms.

Contribution

It provides new insights into the order of the phase transition and the role of dual superconductivity in two-flavor QCD using lattice simulations.

Findings

Critical exponent analysis suggests a second-order transition.

Evidence supports dual superconductivity as a confinement mechanism.

Finite-size scaling confirms the nature of the phase transition.

Abstract

The order and the nature of the finite-temperature phase transition of QCD with two flavors of dynamical quarks is investigated. An analysis of the critical exponent of the specific heat is performed through finite-size and finite-mass scaling of various susceptibilities. Dual superconductivity of QCD vacuum is investigated using a disorder parameter, namely the v.e.v. of a monopole creation operator. Hybrid R simulations were run at lattice spatial sizes of $12^3$, $16^3$, $20^3$ and $32^3$ and temporal size $N_t=4$, with quark masses in the range $am_q = 0.3 - 0.01$.