D=2 STRING THEORY IN TARGET-SPACE WORLDSHEET LIGHT-CONE GAUGE

Authors
ZUBAREV AP
Citation
Ap. Zubarev, D=2 STRING THEORY IN TARGET-SPACE WORLDSHEET LIGHT-CONE GAUGE, Modern physics letters A, 9(33), 1994, pp. 3041-3051
Citations number
24
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields","Physycs, Mathematical
Journal title
Modern physics letters A → ACNP
ISSN journal
02177323
Volume
9
Issue
33
Year of publication
1994
Pages
3041 - 3051
Database
ISI
SICI code
0217-7323(1994)9:33<3041:DSTITW>2.0.ZU;2-5
Abstract
The D = 2 free string in the linear dilaton background is considered i n the so-called target space/worldsheet light-cone gauge X(+) = 0, g(+) = 0, g(+-) = 1. After gauge-fixing, the theory has the residual Vir asoro and U(1) current symmetries. The physical spectrum related to th e SL(2)-invariant vacuum is found to be trivial. We find that the theo ry has a non-trivial spectrum if the states in different nonequivalent representations (''pictures'') of CFT algebra of matter fields are co nsidered.