SCALING FUNCTIONS FOR BABY UNIVERSES IN 2-DIMENSIONAL QUANTUM-GRAVITY

Citation
Ss. Gubser et Ir. Klebanov, SCALING FUNCTIONS FOR BABY UNIVERSES IN 2-DIMENSIONAL QUANTUM-GRAVITY, Nuclear physics. B, 416(3), 1994, pp. 827-849
Citations number
17
Categorie Soggetti
Physics, Nuclear
Journal title
ISSN journal
05503213
Volume
416
Issue
3
Year of publication
1994
Pages
827 - 849
Database
ISI
SICI code
0550-3213(1994)416:3<827:SFFBUI>2.0.ZU;2-2
Abstract
We apply the recently proposed transfer matrix formalism to two-dimens ional quantum gravity coupled to (2,2k - 1) minimal models. We find th at the propagation of a parent universe in geodesic (euclidean) time i s accompanied by continual emission of baby universes and derive a dis tribution function describing their sizes. The k --> infinity (c --> - infinity) limit is generally thought to correspond to classical geomet ry, and we indeed find a classical peak in the universe distribution f unction. However, we also observe dramatic quantum effects associated with baby universes at finite length scales.