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Open AccessJournal ArticleDOI

Inflation in supergravity with a single chiral superfield

TLDR
In this article, the authors proposed new supergravity models describing chaotic Linde- and Starobinsky-like inflation in terms of a single chiral superfield, where the key ideas to obtain a positive vacuum energy during large field inflation are (i) stabilization of the real or imaginary partner of the inflaton by modifying a Kahler potential, and (ii) use of the crossing terms in the scalar potential originating from a polynomial superpotential.
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This article is published in Physics Letters B.The article was published on 2014-09-07 and is currently open access. It has received 83 citations till now. The article focuses on the topics: Superpotential & Inflaton.

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Citations
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Cosmology with Nilpotent Superfields

TL;DR: In this article, supergravity inationary models based on two chiral multiplets, the inaton and inaton, were discussed and discussed in the context of supergravity models.
Journal ArticleDOI

Hyperbolic geometry of cosmological attractors

TL;DR: In this article, a new K\"ahler potential frame is proposed to preserve the shift symmetry of the inflaton field. But the potential frame does not explicitly preserve this symmetry, and it cannot handle higher-order curvature deformations.
Journal ArticleDOI

Cosmology with Nilpotent Superfields

TL;DR: In this article, supergravity inflationary models based on two chiral multiplets, the inflaton and the goldstino superfield, were discussed and a universal relation of these new models to kappa-symmetric super-Dp-brane actions was explained.
Posted Content

The Volkov-Akulov-Starobinsky Supergravity

TL;DR: In this article, the authors constructed a supergravity model whose scalar degrees of freedom arise from a chiral superfield and are solely a scalaron and an axion that is very heavy during the inflationary phase.
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Cosmological Attractors from $α$-Scale Supergravity

Diederik Roest, +1 more
- 28 Aug 2015 - 
TL;DR: In this article, the authors provided an appealing explanation for the phenomenological observation that the inflationary predictions of these supergravity models are fully determined by the curvature of the K\"ahler manifold and provided a novel formulation of $\ensuremath{\alpha}$-attractors which only involves a single chiral superfield.
References
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Journal ArticleDOI

A new type of isotropic cosmological models without singularity

TL;DR: In this paper, the Einstein equations with quantum one-loop contributions of conformally covariant matter fields are shown to admit a class of nonsingular isotropic homogeneous solutions that correspond to a picture of the universe being initially in the most symmetric (de Sitter) state.
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Planck 2015 results. XX. Constraints on inflation

TL;DR: In this article, the authors report on the implications for cosmic inflation of the 2018 Release of the Planck CMB anisotropy measurements, which are fully consistent with the two previous Planck cosmological releases, but have smaller uncertainties thanks to improvements in the characterization of polarization at low and high multipoles.
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Detection of $B$-Mode Polarization at Degree Angular Scales by BICEP2

TL;DR: An excess of B-mode power over the base lensed-ΛCDM expectation is found in the range 30 < ℓ < 150, inconsistent with the null hypothesis at a significance of >5σ, and it is shown that systematic contamination is much smaller than the observed excess.
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Planck 2013 results. XXII. Constraints on inflation

Peter A. R. Ade, +324 more
TL;DR: In this article, the authors present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey.
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