The curvaton scenario in the MSSM and predictions for non-Gaussianity

Anupam Mazumdar; Seshadri Nadathur

doi:10.1103/PhysRevLett.108.111302

The curvaton scenario in the MSSM and predictions for non-Gaussianity

Anupam Mazumdar, Seshadri Nadathur

Institute of Cosmology & Gravitation

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Abstract

We provide a model in which both the inflaton and the curvaton are obtained from within the minimal supersymmetric standard model, with known gauge and Yukawa interactions. Since now both the inflaton and curvaton fields are successfully embedded within the same sector, their decay products thermalize very quickly before the electroweak scale. This results in two important features of the model: first, there will be no residual isocurvature perturbations, and second, observable non-Gaussianities can be generated with the non-Gaussianity parameter
fNL ∼ O(5−1000) being determined solely by the combination of weak-scale physics and the standard model Yukawa interactions.

Original language	English
Article number	111302
Number of pages	4
Journal	Physical Review Letters
Volume	108
Issue number	11
Early online date	13 Mar 2012
DOIs	https://doi.org/10.1103/PhysRevLett.108.111302
Publication status	Published - 16 Mar 2012

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10.1103/PhysRevLett.108.111302

PhysRevLett.108.111302
Anupam Mazumdar and Seshadri Nadathur, 'Curvaton Scenario within the Minimal Supersymmetric Standard Model and Predictions for Non-Gaussianity.' Phys. Rev. Lett. 108, 111302. DOI: https://doi.org/10.1103/PhysRevLett.108.111302. © 2012 American Physical Society. All rights reserved.
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abstract = "We provide a model in which both the inflaton and the curvaton are obtained from within the minimal supersymmetric standard model, with known gauge and Yukawa interactions. Since now both the inflaton and curvaton fields are successfully embedded within the same sector, their decay products thermalize very quickly before the electroweak scale. This results in two important features of the model: first, there will be no residual isocurvature perturbations, and second, observable non-Gaussianities can be generated with the non-Gaussianity parameter fNL ∼ O(5−1000) being determined solely by the combination of weak-scale physics and the standard model Yukawa interactions.",

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AB - We provide a model in which both the inflaton and the curvaton are obtained from within the minimal supersymmetric standard model, with known gauge and Yukawa interactions. Since now both the inflaton and curvaton fields are successfully embedded within the same sector, their decay products thermalize very quickly before the electroweak scale. This results in two important features of the model: first, there will be no residual isocurvature perturbations, and second, observable non-Gaussianities can be generated with the non-Gaussianity parameter fNL ∼ O(5−1000) being determined solely by the combination of weak-scale physics and the standard model Yukawa interactions.

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The curvaton scenario in the MSSM and predictions for non-Gaussianity

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