Non-Equilibrium Quantum Electrodynamics
نویسنده
چکیده
We employ the influence functional technique to trace out the photonic contribution from full quantum electrodynamics. The reduced density matrix propagator then is constructed for the electron field. We discuss the role of time-dependent renormalization in the propagator and focus our attention to the possibility of obtaining a dynamically induced superselection rule. As a final application of our formalism we derive the master equation for the case of the field being in an one-particle state in the non-relativistic regime and verify that electromagnetic vacuum fluctuations are not sufficient to produce decoherence in a position basis.
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