Graceful exit in quantum string cosmology

被引：117

作者：

Gasperini, M

Maharana, J

Veneziano, G

机构：

[1] INST PHYS,BHUBANESWAR 751005,ORISSA,INDIA

[2] DIPARTMENTO FIS TEOR,I-10125 TURIN,ITALY

来源：

NUCLEAR PHYSICS B | 1996年 / 472卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(96)00201-5

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：

We write an O(d, d)-covariant Wheeler-De Witt equation in the (d(2) + 1)-dimensional minisuperspace of low-energy cosmological string backgrounds. We discuss explicit examples of transitions between two duality-related cosmological phases, and we find a finite quantum transition probability even when the two phases are classically separated by a curvature singularity. This quantum approach is completely free from operator ordering ambiguities as a consequence of the duality symmetries of the string effective action.

引用

页码：349 / 360

页数：12

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