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721
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722
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723
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724
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725
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726“…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. …”
Enlace del recurso
Enlace del recurso
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727
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728por Veneziano, G.“…String theory counterparts to Einstein's gravity, cosmology and inflation are described. A very tight upper bound on the Cosmic Gravitational Radiation Background (CGRB) of standard inflation is shown to be evaded in string cosmology, while an interesting signal in the phenomenologically interesting frequency range is all but excluded. …”
Publicado 1996
Enlace del recurso
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729por Davies, Paul Charles WilliamMaterias: “…General Relativity and Cosmology…”
Publicado 1982
Enlace del recurso
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730
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731
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732
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733“…We compute spectra of particles produced during a dilaton-driven kinetic inflation phase within string cosmology models. The resulting spectra depend on the parameters of the model and on the type of particle and are quite varied, some increasing and some decreasing with frequency. …”
Enlace del recurso
Enlace del recurso
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734
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735por Kusenko, Alexander“…Both stable and unstable Q-balls can play an important role in cosmology. In particular, Affleck-Dine baryogenesis can result in a copious production of stable baryonic Q-balls, which can presently exist as a form of dark matter.…”
Publicado 1998
Enlace del recurso
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736por Davidson, Sacha“…This is a review of the cosmological bounds on $B-L$ violating interactions, and the loopholes in the argument that gives these constraints. …”
Publicado 1999
Enlace del recurso
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737
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738
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739
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740