Fermionic Contributions to the Free Energy of Noncommutative Quantum Electrodynamics at High Temperature

TL;DR

This paper investigates how fermionic components influence the free energy and stability of noncommutative QED at high temperatures, revealing that fermions lower the critical temperature for thermodynamic instability.

Contribution

It extends previous work by including fermionic contributions to the free energy of noncommutative QED at finite temperature.

Findings

Fermionic contributions decrease the critical temperature for instability.

At large  T^2, fermions significantly affect thermodynamic properties.

The study provides insights into the stability of noncommutative QED with fermions.

Abstract

We consider the fermionic contributions to the free energy of noncommutative QED at finite temperature $T$. This analysis extends the main results of our previous investigation where we have considered the pure bosonic sector of the theory. For large values of $\theta T^2$ ($\theta$ is the magnitude of the noncommutative parameters) the fermionic contributions decrease the value of the critical temperature, above which there occurs a thermodynamic instability.