Global phase time and path integral for string cosmological models

Abstract

A global phase time is identified for homogeneous and isotropic cosmological models yielding from the low energy effective action of closed bosonic string theory. When the Hamiltonian constraint allows for the existence of an intrinsic time, the quantum transition amplitude is obtained by means of the usual path integral procedure for gauge systems.

12 pages, added references

References in corpus (2)

• String cosmology versus standard and inflationary cosmology
• Gauge invariance of parametrized systems and path integral quantization

Cited by in corpus (4)

• The Pre-Big Bang Scenario in String Cosmology
• Path integral for minisuperspaces and its relation with non equivalent canonical quantizations
• Deparametrization and quantization of the Taub universe
• Comments on quantum cosmology with extrinsic time