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

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.Comment: 6 pages, 3 figures. To be published in Physics Letters