Nonperturbative calculation of Green and vertex functions in terms of particle contours
| dc.creator | Stefanis, N. G. | |
| dc.date | 1996-07-08 | |
| dc.date.accessioned | 2026-07-07T04:22:14Z | |
| dc.date.available | 2026-07-07T04:22:14Z | |
| dc.description | The infrared regime of fermionic Green and vertex functions is studied analytically within a geometric approach which simulates soft interactions by an {\it effective} theory of contours. Expanding the particle path integral in terms of dominant contours at large distances, all-order results in the coupling constant are obtained for the renormalized fermion propagator and a universal vertex function with physical characteristics close to those associated with the Isgur-Wise function in the weak decays of heavy mesons. The extension to the ultraviolet regime is scetched. | |
| dc.description | LaTeX, using Worldstyle and comprising three eps files (7 pages in total). Invited talk presented at the International Conference Problems of Quantum Field Theory, May 13 - 18, 1996, Alushta, Crimea, Ukraine. To appear in the Proceedings | |
| dc.identifier | https://arxiv.org/abs/hep-th/9607063 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9607063 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/54639 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Nonperturbative calculation of Green and vertex functions in terms of particle contours | |
| dc.type | text |