Inflation, de Sitter Landscape and Super-Higgs effect

Abstract

We continue developing cosmological models involving nilpotent chiral superfields, which provide a simple unified description of inflation and the current acceleration of the universe in the supergravity context. We describe here a general class of models with a positive cosmological constant at the minimum of the potential, such that supersymmetry is spontaneously broken in the direction of the nilpotent superfield $S$. In the unitary gauge, these models have a simple action where all highly non-linear fermionic terms of the classical Volkov-Akulov action disappear. We present masses for bosons and fermions in these theories. By a proper choice of parameters in this class of models, one can fit any possible set of the inflationary parameters $n_s$ and $r$, a broad range of values of the vacuum energy $V_0$, which plays the role of the dark energy, and achieve a controllable level of supersymmetry breaking. This can be done without introducing light moduli, such as Polonyi fields, which often lead to cosmological problems in phenomenological supergravity.

19 pages, comments on supersymmetry breaking are added

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Cited by in corpus (42)

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• Single-field $\alpha$-attractors
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• Cosmological Attractors from $\alpha$-Scale Supergravity
• On the origin of constrained superfields
• Component action of nilpotent multiplet coupled to matter in 4 dimensional $\mathcal{N}=1$ supergravity
• $\overline{D3}$ Induced Geometric Inflation
• Cosmology with orthogonal nilpotent superfields
• Cosmological Attractors and Asymptotic Freedom of the Inflaton Field
• Constrained superfields in Supergravity
• The Goldstino Brane, the Constrained Superfields and Matter in N=1 Supergravity
• Inflation from Nilpotent Kähler Corrections
• String Theory Realizations of the Nilpotent Goldstino
• Inflatino-less Cosmology
• Anti-D3 branes and moduli in non-linear supergravity
• Catastrophic Production of Slow Gravitinos
• The goldstone and goldstino of supersymmetric inflation
• Cosmological $\alpha$-Attractors and de Sitter Landscape
• Matter-coupled de Sitter Supergravity
• de Sitter Vacua with a Nilpotent Superfield
• The general de Sitter supergravity component action
• Early Dark Energy in Type IIB String Theory
• Observational constraints on the generalized $\alpha$ attractor model
• Minimal Supergravity Inflation without Slow Gravitino
• de Sitter vacuum from $R^2$ supergravity
• Sgoldstino-less inflation and low energy SUSY breaking
• Cosmological Imprints of SUSY Breaking in Models of Sgoldstinoless Non-Oscillatory Inflation
• Probing the BSM physics with CMB precision cosmology: an application to supersymmetry
• Reference level of the vacuum energy density of the Universe and astrophysical data
• de Sitter decay through goldstino evaporation
• Doubly Self-Dual Actions in Various Dimensions
• (Super)Universal Attractors and the de Sitter Vacua in String Landscape
• Matter coupled Dirac-Born-Infeld action in 4-dimensional N=1 conformal supergravity
• Volkov-Akulov-Starobinsky supergravity revisited
• Moduli Backreaction on Inflationary Attractors
• Bulk/boundary Modular Quintessence and DESI
• Nilpotent superfields for broken abelian symmetries
• Constrained Superfields in Dynamical Background
• Supertrace formulae for nonlinearly realized supersymmetry
• Aspects of cubic nilpotent superfields