Four-loop free energy for the 2D O(n) non-linear sigma-model with 0-loop and 1-loop Symanzik improved actions'

Authors
Alles, B Pepe, M
Citation
B. Alles et M. Pepe, Four-loop free energy for the 2D O(n) non-linear sigma-model with 0-loop and 1-loop Symanzik improved actions', NUCL PHYS B, 563(1-2), 1999, pp. 213-242
Citations number
36
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B
ISSN journal
05503213 → ACNP
Volume
563
Issue
1-2
Year of publication
1999
Pages
213 - 242
Database
ISI
SICI code
0550-3213(199912)563:1-2<213:FFEFT2>2.0.ZU;2-9
Abstract
We calculate up to four loops the free energy of the two-dimensional (2D) O (n) non-linear a-model regularized on the lattice with the 0-loop and 1-loo p Symanzik improved actions. An effective coupling constant based on this c alculation is defined. (C) 1999 Elsevier Science B.V. All rights reserved.