STRING PROPAGATION IN BACKGROUNDS WITH CURVED SPACE-TIME

被引：142

作者：

BARS, I ^{[1
]}

NEMESCHANSKY, D ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT PHYS,LOS ANGELES,CA 90089

来源：

NUCLEAR PHYSICS B | 1991年 / 348卷 / 01期

关键词：

D O I：

10.1016/0550-3213(91)90223-K

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：

We study propagation of bosonic strings and superstrings in background metrics with curved space-time using non-compact current algebras. We discuss 2 + 1 dimensional (super)strings on the SO(2,1) group manifold. Using a coset model we construct a (d - 1)+1 dimensional de Sitter (super)strings for d=2,3,4...10 or 26. We also discuss the posibility of a discrepancy in counting the number of time (i.e. non-compact) coordinates for the classical string versus the quantum string. We illustrate this with several examples. We show evidence that a string or superstring propagating in a background with curved time cannot be excited to arbitrarily high states and that it is unitary only in low lying states. We offer a possible interpretation of this phenomenon. © 1991.

引用

页码：89 / 107

页数：19