Quantum Electrodynamics vacuum polarization solver

The concept of vacuum in quantum electrodynamics

A re-evaluation of the concept of vacuum in quantum electrodynamics is presented, focusing on the vacuum of the quantized electromagnetic field. In contrast to the ‘nothingness’ associated to the idea of classical vacuum, subtle aspects are found in relation to the vacuum of the quantized electromagnetic field both at theoretical and experimental levels. These are not the usually called vacuum ...

Polarization degenerate solid-state cavity quantum electrodynamics

Morten P. Bakker,1 Ajit V. Barve,2 Thomas Ruytenberg,1 Wolfgang Löffler,1 Larry A. Coldren,2 Dirk Bouwmeester,1,3 and Martin P. van Exter1 1Huygens-Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, Netherlands 2Departments of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USA 3Department of Physics, University of Cali...

Quantum Electrodynamics of Casimir Momentum: Momentum of the Quantum Vacuum?

Vacuum photon splitting in Lorentz-violating quantum electrodynamics.

Radiative corrections arising from Lorentz violation in the fermion sector induce a nonzero amplitude for vacuum photon splitting. At one loop, the on-shell amplitude acquires both CPT-even and CPT-odd contributions forbidden in conventional electrodynamics.

Quantum electrodynamics in the squeezed vacuum state: Electron mass shift

Due to the nonvanishing average photon population of the squeezed vacuum state, finite corrections to the scattering matrix are obtained. The lowest order contribution to the electron mass shift for a one mode squeezed vacuum state is given by δm(Ω, s)/m = α(2/π)(Ω/m) sinh(s), where Ω and s stand for the mode frequency and the squeeze parameter and α for the fine structure constant, respectivel...