TOPOLOGICAL CONFORMAL ALGEBRA AND BRST ALGEBRA IN NONCRITICAL STRING THEORIES

被引：9

作者：

FUJIKAWA, K ^{[1
]}

SUZUKI, H ^{[1
]}

机构：

[1] HIROSHIMA UNIV,DEPT PHYS,HIROSHIMA 730,JAPAN

来源：

NUCLEAR PHYSICS B | 1991年 / 361卷 / 02期

关键词：

D O I：

10.1016/0550-3213(91)90272-Y

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The operator algebra in non-critical string theories is studied by treating the cosmological term as a perturbation. The algebra of covariantly regularized BRST and related currents contains a twisted N = 2 superconformal algebra only at d = - 2 in bosonic strings, and a twisted N = 3 superconformal algebra only at d = +/- infinity in spinning strings. The bosonic string at d = -2 is examined by replacing the string coordinate by a fermionic matter with c = -2. The resulting bc-beta-gamma-system accommodates various forms of BRST cohomology, and the ghost number assignment and BRST cohomology are different in the c = -2 string theory and two-dimensional topological gravity.

引用

页码：539 / 554

页数：16

共 30 条

[21] TOPOLOGICAL GRAVITY AND MODULI SPACE [J].