Cosmological Imprints of SUSY Breaking in Models of Sgoldstinoless Non-Oscillatory Inflation

Abstract

In supergravity, the dynamics of the sgoldstino -- superpartner of the goldstino superfield associated with the breaking of supersymmetry at low energy -- can substantially modify the dynamics of inflation in the primordial Universe. So-called sgoldstinoless models assume the existence of a nilpotency constraint $S^2=0$ that effectively removes the sgoldstino from the theory. Such models were proposed to realise non-oscillatory inflation scenarios with a single scalar field, which feature a long period of kination at the end of inflation, and therefore a non-standard post-inflationary cosmology. Using effective operators, we propose models in which the sgoldstino is stabilized close to the origin to reproduce the nilpotent constraint. We show that small sgoldstino fluctuations may lead to a sizeable back-reaction on the cosmological history. We study the effect of this back-reaction on the inflation observables measured in the cosmic microwave background and confront the model to a series of constraints including limits on $\Delta N_{\mathrm{eff}}$. We show that the peculiar form of the potential in the large supersymmetry breaking scale limit can generate peaks in the scalar power spectrum produced from inflation. We study how certain perturbation modes may re-enter the horizon during or after kination and show that a large supersymmetry breaking scale may lead to the formation of primordial black holes with various masses in the early Universe.

arXiv comment26 pages, 7 figures

References in corpus (68)

• Quintessence, Cosmic Coincidence, and the Cosmological Constant
• Cosmological Tracking Solutions
• New cosmological constraints on primordial black holes
• Constraints on Primordial Black Holes
• Primordial Black Holes as a dark matter candidate
• Quintessential inflation
• Threshold of primordial black hole formation
• Primordial black hole dark matter from single field inflation
• Instant Preheating
• From Linear SUSY to Constrained Superfields
• Brane Supersymmetry Breaking
• Cosmology with Nilpotent Superfields
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• Calculating the mass spectrum of primordial black holes
• Anomaly Cancellations in the Type I D9-anti-D9 System and the USp(32) String Theory
• Primordial Black Holes from $\alpha$-attractors
• A new calculation of the mass fraction of primordial black holes
• Primordial Black Holes from a tiny bump/dip in the Inflaton potential
• Cosmological Attractors and Initial Conditions for Inflation
• Ultra slow-roll inflation demystified
• Dark energy, $\alpha$-attractors, and large-scale structure surveys
• Modeling Quintessential Inflation
• Quintessential Inflation with $\alpha$-attractors
• Single-field $\alpha$-attractors
• $\overline{D3}$ and dS
• Anatomy of single-field inflationary models for primordial black holes
• Consistent gravitino couplings in non-supersymmetric strings
• Emergence of Spontaneously Broken Supersymmetry on an Anti-D3-Brane in KKLT dS Vacua
• Curvaton Reheating in Non-oscillatory Inflationary Models
• On sgoldstino-less supergravity models of inflation
• Inflation and Uplifting with Nilpotent Superfields
• Unification of inflation and dark energy {\it à la} quintessential inflation
• Ricci Reheating
• On the origin of constrained superfields
• On the Construction of Quintessential Inflation Models
• Challenges for Large-Field Inflation and Moduli Stabilization
• Global String Embeddings for the Nilpotent Goldstino
• Brane induced supersymmetry breaking and de Sitter supergravity
• Constraints on Cosmic Quintessence and Quintessential Inflation
• A Simple Model for Quintessential Inflation
• Large-Field Inflation and Supersymmetry Breaking
• Inflation, de Sitter Landscape and Super-Higgs effect
• String Theory Realizations of the Nilpotent Goldstino
• Gravitational reheating in quintessential inflation
• Curvaton reheating allows TeV Hubble scale in NO inflation
• A review of Quintessential Inflation
• Primordial black holes and gravitational waves in nonstandard cosmologies
• Moduli Stabilisation with Nilpotent Goldstino: Vacuum Structure and SUSY Breaking
• Towards a model of Quintessential Inflation
• Palatini $R^2$ Quintessential Inflation
• Preheating in Quintessential Inflation
• Induced gravitational waves from slow-roll inflation after an enhancing phase
• Primordial Black Holes and Gravitational Waves in Hybrid Inflation with Chaotic Potentials
• Soft branes in supersymmetry-breaking backgrounds
• The Inflaton Portal to a Highly decoupled EeV Dark Matter Particle
• Quintessential $\alpha$-attractor inflation: forecasts for Stage IV galaxy surveys
• Signatures of Non-thermal Dark Matter with Kination and Early Matter Domination: Gravitational Waves versus Laboratory Searches
• Hybrid Quintessential Inflation
• $\alpha$ attractors in Quintessential Inflation motivated by Supergravity
• Reconstructing a model of quintessential inflation
• UV Corrections in Sgoldstino-less Inflation
• NO Curvatons or Hybrid Quintessential Inflation
• The Inflaton Portal to Dark Matter
• Sgoldstino-less inflation and low energy SUSY breaking
• Non-Oscillatory No-Scale Inflation
• Modified hybrid inflation, reheating and stabilization of the electroweak vacuum
• Quintessential Inflation and curvaton reheating
• Models of Quintessential Inflation

Cited by in corpus (4)

• Evaporation of Primordial Black Holes in the Early Universe: Mass and Spin Distributions
• Primordial Black Hole Archaeology with Gravitational Waves from Cosmic Strings
• Primordial black holes from Volkov-Akulov-Starobinsky supergravity
• Complementarity between Cosmic String Gravitational Waves and long-lived particle searches in a laboratory