Using cosmology to constrain the topology of hidden dimensions

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dc.creatorSimon, Joan
dc.creatorJimenez, Raul
dc.creatorVerde, Licia
dc.creatorBerglund, Per
dc.creatorBalasubramanian, Vijay
dc.date2006-05-15
dc.date.accessioned2026-07-07T07:08:27Z
dc.date.available2026-07-07T07:08:27Z
dc.descriptionA four-dimensional universe, arising from a flux compactification of Type IIB string theory, contains scalar fields with a potential determined by topological and geometric parameters of the internal -hidden- dimensions. We show that inflation can be realized via rolling towards the large internal volume minima that are generic in these scenarios, and we give explicit formulae relating the microscopic parameters (e.g., the Euler number of the internal space) to the cosmological observables (e.g., the spectral index). We find that the tensor-to-scalar ratio, the running of the spectral index, and the potential energy density at the minimum are related by consistency relations and are exponentially small in the number of e-foldings. Further, requiring that these models arise as low-energy limits of string theory eliminates most of them, even if they are phenomenologically valid. In this context, this approach provides a strategy for systematically falsifying stringy inflation models.
dc.description4 pages, no figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0605371
dc.identifierhttp://arxiv.org/abs/astro-ph/0605371
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110713
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleUsing cosmology to constrain the topology of hidden dimensions
dc.typetext

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