An illustration of the light-front coupled-cluster method in quantum electrodynamics

Chabysheva, S. S.
October 2012
AIP Conference Proceedings;Oct2012, Vol. 1492 Issue 1, p194
Academic Journal
A field-theoretic formulation of the exponential-operator technique is applied to a nonperturbative Hamiltonian eigenvalue problem in electrodynamics, quantized in light-front coordinates. Specifically, we consider the dressed-electron state, without positron contributions but with an unlimited number of photons, and compute its anomalous magnetic moment. A simple perturbative solution immediately yields the Schwinger result of α/2π. The nonperturbative solution, which requires numerical techniques, sums a subset of corrections to all orders in α and incorporates additional physics.


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