FLAVOR CONDENSATE AND VACUUM (IN-)STABILITY IN QED(2+1)

Authors
DITTRICH W GIES H
Citation
W. Dittrich et H. Gies, FLAVOR CONDENSATE AND VACUUM (IN-)STABILITY IN QED(2+1), Physics letters. Section B, 392(1-2), 1997, pp. 182-188
Citations number
11
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
392
Issue
1-2
Year of publication
1997
Pages
182 - 188
Database
ISI
SICI code
0370-2693(1997)392:1-2<182:FCAV(I>2.0.ZU;2-Q
Abstract
In this letter we study (2+1)-dimensional QED. The first part contains the computation of the flavor symmetry-breaking condensate and its re lation to the trace of the energy-momentum tensor, while the second pa rt is concerned with the computation of the effective action allowing for non-constant static external magnetic fields. We do not find that space derivatives in the magnetic field lower the energy of the ground state as compared to a constant field configuration.