Can the type-IIB axion prevent Pre-Big Bang inflation?
| Autor: | Alexander Feinstein, M.A. Vazquez-Mozo |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
High Energy Physics - Theory
Big Bang Inflation (cosmology) Physics Physics::General Physics Nuclear and High Energy Physics Field (physics) FOS: Physical sciences Superstring theory Context (language use) General Relativity and Quantum Cosmology (gr-qc) General Relativity and Quantum Cosmology High Energy Physics::Theory Theoretical physics Extension (metaphysics) High Energy Physics - Theory (hep-th) Gravitational collapse Axion |
| Zdroj: | Physics Letters B. 441:40-45 |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/s0370-2693(98)01183-6 |
| Popis: | We look at the possibility of superinflationary behavior in a class of anisotropic Type-IIB superstring cosmologies in the context of Pre-big Bang scenario and find that there exists a rather narrow range of parameters for which these models inflate. We then show that, although in general this behavior is left untouched by the introduction of a Ramond-Ramond axion field through a SL(2,R) rotation, there exists a particular class of axions for which inflation disappears completely. Asymptotic past initial conditions are briefly discussed, and some speculations on the possible extension of Pre-big Bang ideas to gravitational collapse are presented. harvmac, epsf. 3 figures included |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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