Recent developments in quantum string cosmology

Details Recent developments in quantum string cosmology Recent developments in quantum string cosmology

1999-12-13

arxiv.org/abs/gr-qc/9912049v1

Nucl.Phys.Proc.Suppl. 88 (2000) 355-358

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, one eps figures, uses espcrc2.sty. Talk given at the Third Conference on Constrained Dynamics and Quantum Gravity

Scientific paper

10.1016/S0920-5632(00)00801-X

In this talk we discuss the quantisation of a class of string cosmology models characterised by scale factor duality invariance. The amplitudes for the full set of classically allowed and forbidden transitions are computed by applying the reduced phase space and path integral methods. In particular, the path integral calculation clarifies the meaning of the instanton-like behaviour of the transition amplitudes that has been first pointed out in previous investigations.

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