NONPERTURBATIVE CALCULATION OF CORRELATORS IN 2D QUANTUM-GRAVITY

被引：25

作者：

AMBJORN, J ^{[1
]}

GREENSITE, J ^{[1
]}

机构：

[1] SAN FRANCISCO STATE UNIV,DEPT PHYS & ASTRON,SAN FRANCISCO,CA 94132

来源：

PHYSICS LETTERS B | 1991年 / 254卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90397-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The "fifth-time" action provides a truly non-perturbative definition of 2D quantum gravity. We show that it can be used for numerical calculation of correlators. We compare with the results obtained by defining 2D gravity by contour rotation in the functional integral. The two non-perturbative definitions give different results for correlators. The method of contour rotation leads to complex correlators, while the results using the fifth-time action are always real.

引用

页码：66 / 70

页数：5

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