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Gravitino constraints on supergravity inflation
High Energy Physics - Phenomenology · Submitted 5 Nov 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We point out that a large part of the parameter space within the latest BICEP/Keck 95\% confidence contour may have been excluded by the gravitino constraints, depending on the mass scale of the inflaton.
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The abstract, sentence by sentence
Supergravity embedding of the Standard Model of particle physics provides phenomenologically well-motivated and observationally viable inflationary scenarios. We investigate a class of inflationary models based on the superconformal framework of supergravity and discuss constraints from the reheating temperature, with the particular focus on the gravitino problem inherent in these scenarios. We point out that a large part of the parameter space within the latest BICEP/Keck 95\% confidence contour may have been excluded by the gravitino constraints, depending on the mass scale of the inflaton. Precision measurements of the scalar spectral index by a future mission may rule out some of these scenarios conclusively.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Supergravity embedding of the Standard Model of particle physics provides phenomenologically well-motivated and observationally viable inflationary scenarios. | background 1.00 | 0.07 | 0.04 | asserted 1.00 |
| s1 | We investigate a class of inflationary models based on the superconformal framework of supergravity and discuss constraints from the reheating temperature, with the particular focus on the gravitino problem inherent in these scenarios. | contribution 1.00 | 0.90 | 0.08 | asserted 0.89 |
| s2 | We point out that a large part of the parameter space within the latest BICEP/Keck 95\% confidence contour may have been excluded by the gravitino constraints, depending on the mass scale of the inflaton. | result 0.88 | 0.80 | 0.76 | hedged possibility 0.99 |
| s3 | Precision measurements of the scalar spectral index by a future mission may rule out some of these scenarios conclusively. | future work 0.90 | 0.11 | 0.07 | hedged possibility 1.00 |
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The paper
Original abstract
Supergravity embedding of the Standard Model of particle physics provides phenomenologically well-motivated and observationally viable inflationary scenarios. We investigate a class of inflationary models based on the superconformal framework of supergravity and discuss constraints from the reheating temperature, with the particular focus on the gravitino problem inherent in these scenarios. We point out that a large part of the parameter space within the latest BICEP/Keck 95\% confidence contour may have been excluded by the gravitino constraints, depending on the mass scale of the inflaton. Precision measurements of the scalar spectral index by a future mission may rule out some of these scenarios conclusively.
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How the literature uses it
8 arXiv papers cite this in 9 sentences
Papers citing it · 6 sentences without a confident label
Cites it as background 3 papers
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In the context of the gauge mediated supersymmetry breaking scenario, a different production mechanism is used [ref] [See also [ref] for various works on gravitino production and DM.].
Gravitino Thermal Production, Dark Matter, and Reheating of the Universe · Introduction · 0.85
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The reheating temperature the Universe reached after its thermalization has been extensively studied and various mechanisms and models have been put under theoretical scrutiny, [ref] .
Issues in Palatini ${\cal{R}}^2$ inflation: Bounds on the Reheating Temperature · Universe's Reheating Temperature · 1.00
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Additionally, inflationary models based on supersymmetric extensions of the Standard Model, such as those discussed in [ref] , may also be worthy of exploration.
Reheating consistency condition on the classically conformal $U(1)_{B-L}$ Higgs inflation model · Final remarks · 0.88
What it cites · 28 sentences without a confident label
Compares with 2 papers
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The results are shown in Fig. [ref] as red curves, together with the 1- and 2-$σ$ contours from the Planck +BICEP/Keck 2018 data [ref] .
2110.00483 · Introduction · 0.93
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Note Added.— After completing this work, we noticed a preprint [ref] with partially overlapping results appeared on the arXiv.
Reheating in Models with Non-minimal Coupling in metric and Palatini formalisms · Introduction · 0.80
Cites as background 11 papers
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Supergravity entails the gravitino, which is potentially harmful in cosmological scenarios [ref] depending on its mass $m_3/2=F/√(3)M_P$, see e.g. [ref] .
Cosmologically Viable Low-energy Supersymmetry Breaking · Introduction · 0.88
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See also [ref] for the construction in the Pati-Salam model, [ref] for the type I and type III seesaw models, [ref] for the $B-L$ model, [ref] for the $SO(10)$ grand unified theory, [ref] for the hybrid inflation model and [ref] for the gauge mediated supersymmetry breaking model.
Supersymmetric standard model inflation in the Planck era · Introduction · 0.86
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See also [ref] for the construction in the Pati-Salam model, [ref] for the type I and type III seesaw models, [ref] for the $B-L$ model, [ref] for the $SO(10)$ grand unified theory, [ref] for the hybrid inflation model and [ref] for the gauge mediated supersymmetry breaking model.
Higgs-lepton inflation in the supersymmetric minimal seesaw model · Introduction · 0.86
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