Expanding and contracting universes in third quantized string cosmology

被引：25

作者：

Buonanno, A

Gasperini, M

Maggiore, M

Ungarelli, C

机构：

[1] IST NAZL FIS NUCL, PISA, ITALY

[2] CERN, DIV THEORY, CH-1211 GENEVA 23, SWITZERLAND

[3] UNIV TURIN, DIPARTIMENTO FIS TEOR, I-10125 TURIN, ITALY

来源：

CLASSICAL AND QUANTUM GRAVITY | 1997年 / 14卷 / 05期

关键词：

D O I：

10.1088/0264-9381/14/5/005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the possibility of quantum transitions from the string perturbative vacuum to cosmological configurations characterized by isotropic contraction and decreasing dilaton. When the dilaton potential preserves the sign of the Hubble factor throughout the evolution, such transitions can be represented as an anti-tunnelling of the Wheeler-DeWitt wavefunction in minisuperspace or, in third-quantization language, as the production of pairs of universes out of the vacuum.

引用

页码：L97 / L103

页数：7

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