PERTURBATIVE RENORMALIZATION OF MASSLESS PHI-4(4) WITH FLOW EQUATIONS

Authors
KELLER G KOPPER C
Citation
G. Keller et C. Kopper, PERTURBATIVE RENORMALIZATION OF MASSLESS PHI-4(4) WITH FLOW EQUATIONS, Communications in Mathematical Physics, 161(3), 1994, pp. 515-532
Citations number
19
Categorie Soggetti
Mathematical Method, Physical Science","Physycs, Mathematical
Journal title
Communications in Mathematical Physics → ACNP
ISSN journal
00103616
Volume
161
Issue
3
Year of publication
1994
Pages
515 - 532
Database
ISI
SICI code
0010-3616(1994)161:3<515:PROMPW>2.0.ZU;2-Z
Abstract
Perturbative renormalizability proofs in the Wilson-Polchinski renorma lization group framework, based on flow equations, were so far restric ted to massive theories. Here we extend them to Euclidean massless phi 4(4). As a by-product of the proof we obtain bounds on the singularity of the Green functions at exceptional momenta in terms of the excepti onality of the latter. These bounds seem to be new and are quite sharp .