Renormalization and dressing in quantum field theory
| dc.creator | Stefanovich, Eugene V. | |
| dc.date | 2005-03-08 | |
| dc.date | 2005-04-11 | |
| dc.date.accessioned | 2026-07-07T04:18:09Z | |
| dc.date.available | 2026-07-07T04:18:09Z | |
| dc.description | We illustrate the mass and charge renormalization procedures in quantum field theory using, as an example, a simple model of interacting electrons and photons. It is shown how addition of infinite renormalization counterterms to the Hamiltonian helps to obtain finite and accurate results for the S-matrix. In order to remove the ultraviolet divergences from the Hamiltonian, we apply the Greenberg-Schweber ``dressing transformation'' and the Glazek-Wilson ``similarity renormalization''. The resulting ``dressed particle'' Hamiltonian is finite in all orders of the perturbation theory and yields accurate S-matrix and bound state energies. The bare and virtual particles are removed from the theory, and physical dressed particles interact via direct action-at-a-distance. | |
| dc.description | 30 pages, 5 figures; improved discussions, fixed typos, added acknowledgements, updated references | |
| dc.identifier | https://arxiv.org/abs/hep-th/0503076 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0503076 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/53061 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Renormalization and dressing in quantum field theory | |
| dc.type | text |