FERMION CONDENSATES OF MASSLESS 2-DIMENSIONAL QED AT FINITE-DENSITY IN NONTRIVIAL TOPOLOGICAL SECTORS

Authors
CHRISTIANSEN HR SCHAPOSNIK FA
Citation
Hr. Christiansen et Fa. Schaposnik, FERMION CONDENSATES OF MASSLESS 2-DIMENSIONAL QED AT FINITE-DENSITY IN NONTRIVIAL TOPOLOGICAL SECTORS, Physical review. D. Particles and fields, 53(6), 1996, pp. 3260-3265
Citations number
22
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
53
Issue
6
Year of publication
1996
Pages
3260 - 3265
Database
ISI
SICI code
0556-2821(1996)53:6<3260:FCOM2Q>2.0.ZU;2-C
Abstract
Vacuum expectation values of products of local bilinears <(psi)over ba r psi are computed in massless two-dimensional QED at finite density. It is shown that chiral condensates exhibit an oscillatory inhomogeneo us behavior depending on the chemical potential. The use of a path int egral approach clarifies the connection of this phenomenon with the to pological structure of the theory.