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math-ph2003★ 30 cited
Mass renormalization in nonrelativistic QED
Fumio Hiroshima, Herbert Spohn
In nonrelativistic QED the charge of an electron equals its bare value, whereas the self-energy and the mass have to be renormalized. In our contribution we study perturbative mass…
math-ph2003★ 1 cited
Local exponents and infinitesimal generators of canonical transformations on Boson Fock spaces
F. Hiroshima, K. R. Ito
A one-parameter symplectic group $\{e^{t\dA}\}_{t\in\RR}$ derives proper canonical transformations on a Boson Fock space. It has been known that the unitary operator implemen…