2-DIMENSIONAL QUANTUM COSMOLOGY

被引：49

作者：

COOPER, A ^{[1
]}

SUSSKIND, L ^{[1
]}

THORLACIUS, L ^{[1
]}

机构：

[1] STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305

来源：

NUCLEAR PHYSICS B | 1991年 / 363卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(91)90238-S

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：

Two-dimensional quantum gravity coupled to conformally invariant matter with central charge c > 25 has been proposed as a toy model for quantum gravity in higher dimensions. The associated "Wheeler-DeWitt equation" is non-linear and unstable to forming a condensate of baby universes. This will occur even in the classical c --> infinity limit. Small fluctuations about this background describe the propagation of single universes and satisfy a more conventional linear Wheeler-DeWitt equation. The resulting two-dimensional cosmology depends on details of the non-linear dynamics. In particular the existence of a large-scale cosmological constant is determined by the behavior of a string theoretic tachyon potential near its minimum.

引用

页码：132 / 162

页数：31

共 54 条

[1]

ANDERSON A, 1989, PHYS LETT B, V212, P334

[2]

ANDERSON A, 1989, NUCL PHYS B, V321, P48

[3] COSMOLOGICAL STRING THEORIES AND DISCRETE INFLATION [J].