On the non-relativistic limit of a model in quantum electrodynamics

Details On the non-relativistic limit of a model in quantum electrodynamics On the non-relativistic limit of a model in quantum electrodynamics

2009-05-07

arxiv.org/abs/0905.1006v1

Physics

Mathematical Physics

13 pages

Scientific paper

We consider a (semi-)relativistic spin-1/2 particle interacting with quantized radiation. The Hamiltonian has the form $\hat{H}_c^V:=\{c^2[(\mathbf{p}+{\bf A})^2+{\bf \sigma}\cdot{\bf B}]+(mc^2)^2\}^{1/2}-mc^2+V+H_f$. Assuming that the potential $|V|$ is bounded with respect to the momentum $|\mathbf{p}|$, we show that $\hat{H}_c^V$ converges in norm-resolvent sense to the usual Pauli-Fierz operator when $c$, the speed of light, tends to $\infty$.

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