MULTILOOP CORRELATORS FOR CLOSED STRINGS WITH DISCRETE TARGET SPACE

被引：21

作者：

KOSTOV, IK ^{[1
]}

机构：

[1] CEA,SCI MAT LAB,SERV PHYS THEOR SACLAY,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICS LETTERS B | 1991年 / 266卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90741-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the multi-loop correlation functions in a theory of strings embedded in a one-dimensional discrete manifold. Such a theory provides a microscopic definition of 2D quantum gravity coupled to unitary matter. (The conformal anomaly of the matter field depends on the choice of the embedding manifold.) The tree-level loop amplitudes are evaluated by means of a set of Feynman rules with clear geometrical meaning: the propagator is the two-loop correlator of the closed string and the vertices are the multi-loop amplitudes in pure gravity.

引用

页码：42 / 50

页数：9

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