WARD IDENTITIES AND A PERTURBATIVE ANALYSIS OF A U(1) GOLDSTONE BOSONIN A MANY FERMION SYSTEM

Authors
FELDMAN J MAGNEN J RIVASSEAU V TRUBOWITZ E
Citation
J. Feldman et al., WARD IDENTITIES AND A PERTURBATIVE ANALYSIS OF A U(1) GOLDSTONE BOSONIN A MANY FERMION SYSTEM, Helvetica Physica Acta, 66(5), 1993, pp. 498-550
Citations number
8
Categorie Soggetti
Physics
Journal title
Helvetica Physica Acta → ACNP
ISSN journal
00180238
Volume
66
Issue
5
Year of publication
1993
Pages
498 - 550
Database
ISI
SICI code
0018-0238(1993)66:5<498:WIAAPA>2.0.ZU;2-M
Abstract
We derive Ward identities, to all orders of perturbation theory, in ma ny Fermion systems with short range interactions and broken U(1) numbe r symmetry. They imply that the system is superrenormalizable in the G oldstone boson regime.