Observational constraints on inflationary potentials within the quantum collapse framework

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....

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Publicado: 2019
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_22126864_v24_n_p_Leon
http://hdl.handle.net/20.500.12110/paper_22126864_v24_n_p_Leon
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_22126864_v24_n_p_Leon2023-06-08T16:35:15Z Observational constraints on inflationary potentials within the quantum collapse framework 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. © 2019 Elsevier B.V. 2019 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_22126864_v24_n_p_Leon http://hdl.handle.net/20.500.12110/paper_22126864_v24_n_p_Leon
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description 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. © 2019 Elsevier B.V.
title Observational constraints on inflationary potentials within the quantum collapse framework
spellingShingle Observational constraints on inflationary potentials within the quantum collapse framework
title_short Observational constraints on inflationary potentials within the quantum collapse framework
title_full Observational constraints on inflationary potentials within the quantum collapse framework
title_fullStr Observational constraints on inflationary potentials within the quantum collapse framework
title_full_unstemmed Observational constraints on inflationary potentials within the quantum collapse framework
title_sort observational constraints on inflationary potentials within the quantum collapse framework
publishDate 2019
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_22126864_v24_n_p_Leon
http://hdl.handle.net/20.500.12110/paper_22126864_v24_n_p_Leon
_version_ 1768546324883439616

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