The leading low-T correction to the two-loop Heisenberg-Euler Lagrangian is extracted from derivatives of the one-loop zero-T version via real-time formalism, then dressed with tadpoles and resummed to all loops.
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Leading low-temperature correction to the Heisenberg-Euler Lagrangian
The leading low-T correction to the two-loop Heisenberg-Euler Lagrangian is extracted from derivatives of the one-loop zero-T version via real-time formalism, then dressed with tadpoles and resummed to all loops.