Improved ring potential of QED at finite temperature and in the presence of weak and strong magnetic field

N. Sadooghi, K. Sohrabi Anaraki

Using the general structure of the vacuum polarization tensor ${\Pi }_{\mu \nu }(k_0,\mathbf{k})$ in the infrared (IR) limit, $k_0\to 0$, the ring contribution to QED effective potential…