The stability of vacua in two-dimensional gauge theory

Authors
Citation
V. Kac et J. Troost, The stability of vacua in two-dimensional gauge theory, PHYS LETT B, 501(3-4), 2001, pp. 313-318
Citations number
22
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
501
Issue
3-4
Year of publication
2001
Pages
313 - 318
Database
ISI
SICI code
0370-2693(20010308)501:3-4<313:TSOVIT>2.0.ZU;2-3
Abstract
We discuss the stability of vacua in two-dimensional gauge theory for any s imple, simply connected gauge group. Making use of the representation of a vacuum in terms of a Wilson line at infinity, we determine which vacua are stable against pair production of heavy matter in the adjoint of the gauge group. By calculating correlators of Wilson loops, we reduce the problem to a problem in representation theory of Lie groups, that we solve in full ge nerality. (C) 2001 Published by Elsevier Science B.V.