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Artículo

Observational constraints on inflationary potentials within the quantum collapse framework

Leon Garcia, GabrielIcon ; Pujol, Alejandro JavierIcon ; Landau, Susana JudithIcon ; Piccirilli, María PíaIcon
Fecha de publicación: 03/2019
Editorial: Elsevier Science
Revista: Physics of the Dark Universe
ISSN: 2212-6864
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Astronomía

Resumen

The physical mechanism responsible for the emergence of primordial cosmic seeds from a perfect isotropic and homogeneous Universe has not been fully addressed in standard cosmic inflation. To handle this shortcoming, D. Sudarsky et al have developed a proposal: the self-induced collapse hypothesis. In this scheme, the objective collapse of the inflaton's wave function generates the inhomogeneity and anisotropy at all scales. In this paper we analyze the viability of a set of inflationary potentials in both the context of the collapse proposal and within the standard inflationary framework. For this, we perform a statistical analysis using recent CMB and BAO data to obtain the prediction for the scalar spectral index n s in the context of a particular collapse model: the Wigner scheme. The predicted n s and the tensor-to-scalar ratio r in terms of the slow roll parameters is different between the collapse scheme and the standard inflationary model. For each potential considered we compare the prediction of n s and r with the limits established by observational data in both pictures. The result of our analysis shows in most cases a difference in the inflationary potentials allowed by the observational limits in both frameworks. In particular, in the standard approach the more concave a potential is, the more is favored by the data. On the other hand, in the Wigner scheme, the data favors equally all type of concave potentials, including those at the border between convex and concave families.
Palabras clave: inflation , cmb , collapse models
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/117399
DOI: https://doi.org/10.1016/j.dark.2019.100285
URL: https://www.sciencedirect.com/science/article/abs/pii/S2212686418301055?via%3Dih
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Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
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Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Leon Garcia, Gabriel; Pujol, Alejandro Javier; Landau, Susana Judith; Piccirilli, María Pía; Observational constraints on inflationary potentials within the quantum collapse framework; Elsevier Science; Physics of the Dark Universe; 24; 3-2019; 1-15
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