Fermionic effective action and the pahse estructure of non compact quantum electrodynamics in 2+1 dimensions

TL;DR

This paper investigates the phase structure of non-compact QED in 2+1 dimensions, revealing a continuous phase transition line that persists even at very low fermion flavor numbers.

Contribution

It applies the microcanonical fermionic average method to analyze the phase diagram of non-compact QED3, providing new insights into its phase transition behavior.

Findings

Evidence for a continuous phase transition line in the $eta, N$ plane

Phase transition persists at arbitrarily small flavor number $N$

Method demonstrates effectiveness in studying non-compact QED3

Abstract

We study the phase diagram of non compact $QED_3$ using the microcanonical fermionic average method described elsewhere. We present evidence for a continuous phase transition line in the $\beta, N$ plane, extending down to arbitrarily small flavour number $N$.