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  Expanding and contracting universes in third quantized string cosmology

Buonanno, A., Gasperini, M., Maggiore, M., & Ungarelli, C. (1997). Expanding and contracting universes in third quantized string cosmology. Classical and quantum gravity, 14, L97-L103. doi:10.1088/0264-9381/14/5/005.

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Buonanno, A.1, 2, 3, Author           
Gasperini, M., Author
Maggiore, M., Author
Ungarelli, C., Author
Affiliations:
1Dipartimento di Fisica, Università di Pisa , ou_persistent22              
2Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Pisa, Italy, ou_persistent22              
3Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: High Energy Physics - Theory, hep-th,General Relativity and Quantum Cosmology, gr-qc
 Abstract: 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--De Witt wave function in minisuperspace or, in a third-quantization language, as the production of pairs of universes out of the vacuum.

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 Dates: 1997-01-271997
 Publication Status: Issued
 Pages: 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
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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 14 Sequence Number: - Start / End Page: L97 - L103 Identifier: ISSN: 0264-9381
CoNE: https://pure.mpg.de/cone/journals/resource/954925513480_1