2003/12/11 by Dan Solomon, Solomon, Dan
Physics and Astronomy · #Quantum Electrodynamics and Casimir Effect #Cold Atom Physics and Bose-Einstein Condensates #Atomic and Molecular Physics
paper · pdf · doi:10.48550/arxiv.quant-ph/0312106
Dirac's hole theory (HT) and quantum field theory (QFT) are generally considered to be equivalent to each other. However, it has been recently shown that for a time independent perturbation different results are obtained when the change in the vacuum energy is calculated. Here we shall extend this discussion to include a time dependent perturbation. It will be shown that HT and QFT yield different results for the change in the vacuum energy due to a time dependent perturbation.