Minimal Inflation

Abstract

Using the universal X superfield that measures in the UV the violation of conformal invariance we build up a model of multifield inflation. The underlying dynamics is the one controlling the natural flow of this field in the IR to the Goldstino superfield once SUSY is broken. We show that flat directions satisfying the slow roll conditions exist only if R-symmetry is broken. Naturalness of our model leads to scales of SUSY breaking of the order of 10^{11-13} Gev, a nearly scale-invariant spectrum of the initial perturbations and negligible gravitational waves. We obtain that the inflaton field is lighter than the gravitino by an amount determined by the slow roll parameter eta. The existence of slow-roll conditions is directly linked to the values of supersymmetry and R-symmetry breaking scales. We make cosmological predictions of our model and compare them to current data.

References in corpus (4)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• From Linear SUSY to Constrained Superfields
• Notes on SUSY and R-Symmetry Breaking in Wess-Zumino Models
• The Shape of the Primordial Power Spectrum: A Last Stand Before Planck

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• The goldstone and goldstino of supersymmetric inflation
• Gravitino Problem in Minimal Supergravity Inflation
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• Minimal scalar-less matter-coupled supergravity
• Minimal $R+R^2$ Supergravity Models of Inflation Coupled to Matter
• Scale invariant Volkov-Akulov Supergravity
• The MSSM Higgs Sector with a Dynamical Goldstino Supermultiplet
• The general de Sitter supergravity component action
• On non-universal Goldstino couplings to matter
• Decoupling Limits of sGoldstino Modes in Global and Local Supersymmetry
• Inflation via Gravitino Condensation in Dynamically Broken Supergravity
• SUSY in the sky or a keV signature of sub-GeV gravitino dark matter
• Inflation from Supersymmetry Breaking
• Supersymmetry Breaking by Higher Dimension Operators
• Inflation from Supergravity with Gauged R-symmetry in de Sitter Vacuum
• Goldstino and sgoldstino in microscopic models and the constrained superfields formalism
• Gravity waves and the LHC: Towards high-scale inflation with low-energy SUSY
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• Minimal Supergravity Inflation without Slow Gravitino
• UV Corrections in Sgoldstino-less Inflation
• A geometric bound on F-term inflation
• General sGoldstino Inflation
• A microscopic model for inflation from supersymmetry breaking
• An effective theory of accelerated expansion
• Non-linear Realizations and Higher Curvature Supergravity
• Inflation in $R^2$ supergravity with non-minimal superpotentials
• On the Role of Space-Time Foam in Breaking Supersymmetry via the Barbero-Immirzi Parameter
• Phenomenology of the minimal inflation scenario: inflationary trajectories and particle production
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• Unitarity constraint on the Kähler curvature
• Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
• Decoupling limits in multi-sector supergravities
• On Gravitino properties in a Conformal Supergravity Model
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• $F$-term Multi-Field Inflation in Supergravity without Stabiliser Superfields
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