1997/01/27 by Alessandra Buonanno, A. Buonanno, M. Gasperini +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dilaton #Isotropy #Mathematical physics #Minisuperspace #Particle physics theoretical and experimental studies #Physics #Quantization (signal processing) #Quantum #Quantum cosmology #Quantum gravity #Quantum mechanics #Relationship between string theory and quantum field theory #String (physics) #String cosmology #String theory #Theoretical physics #gr-qc #hep-th
paper · pdf · doi:10.1088/0264-9381/14/5/005
published as Class.Quant.Grav.14:L97-L103,1997 · 11 pages, LATEX, to apper in Class. Quantum Grav. An updated collection of papers on the pre-big bang scenario in string cosmology is a available at http://www.to.infn.it/teorici/gasperini
arxiv created 1997/01/27 · openalex publication_date 1997/05/01 · arxiv updated 2019/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
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.