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hep-th2003★ 1 cited
A problem with the Schwinger term in Dirac field theory
Dan Solomon
In order for Dirac theory to be gauge invariant it can be shown that the Schwinger term must be zero. However, it can also be shown that for the vacuum state to be the lowest energ…
quant-ph2003
The Heisenberg versus the Schrodinger picture in quantum field theory
Dan Solomon
The Heisenberg picture and Schrodinger picture are supposed to be equivalent representations of quantum mechanics. However this idea has been challenged by P.A.M. Dirac. Also, it h…
quant-ph2003
The problem of gauge invariance in Dirac field theory
Dan Solomon
Quantum field theory is assumed to be gauge invariant. However it is well known that when certain quantities are calculated using perturbation theory the results are not gauge inva…