Unified no-scale model of modulus fixing, inflation, supersymmetry breaking, and dark energy

Ellis, John; Nanopoulos, Dimitri V.; Olive, Keith A.; Verner, Sarunas

doi:10.1103/physrevd.100.025009

Cited by 15 publications

(28 citation statements)

References 66 publications

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“…We demonstrate in this paper the construction of a non-oscillatory, no-scale supergravity model of inflation (NO-NO inflation), whose predictions agree with the most recent cosmic microwave background (CMB) measurements [37,38]. This model has a simple plateau inflationary potential, whose predictions are similar to those of the original Starobinsky model of inflation based on R + R 2 gravity [40] (see [41][42][43][44][45][46][47][48][49][50][51] for other Starobinsky-like mod-els in the context of no-scale supergravity), and the general framework can be extended easily to models of no-scale attractors [52], which we leave for future work. We note that plateau models of inflation with a minimum have also been studied in [53,54], where they were referred to as T-models.…”

Section: Introductionsupporting

confidence: 55%

“…(18). In order to avoid these potential problems, we can follow the treatment presented in [31,44,52] and include an adjustable parameter for supersymmetry breaking and dark energy without invoking any additional fields. A full treatment of supersymmetry breaking and the electroweak transition lies beyond the scope of this paper and will be considered in future work.…”

Section: Non-oscillatory Effective Potentialmentioning

confidence: 99%

“…where the complex field T is associated with the volume modulus, and the complex fields φ and S are matter-like fields. In order to express the Kähler potential (A1) in the symmetric form [42,43,91]…”

Section: A Kähler Transformations and The Choice Of Basismentioning

confidence: 99%

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Non-oscillatory no-scale inflation

Ellis

Nanopoulos

Olive

et al. 2021

J. Cosmol. Astropart. Phys.

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We propose a non-oscillatory no-scale supergravity model of inflation (NO-NO inflation) in which the inflaton does not oscillate at the end of the inflationary era. Instead, the Universe is then dominated by the inflaton kinetic energy density (kination). During the transition from inflation to kination, the Universe preheats instantly through a coupling to Higgs-like fields. These rapidly annihilate and scatter into ultra-relativistic matter particles, which subsequently dominate the energy density, and reheating occurs at a temperature far above that of Big Bang Nucleosynthesis. After the electroweak transition, the inflaton enters a tracking phase as in some models of quintessential inflation. The model predictions for cosmic microwave background observables are consistent with Planck 2018 data, and the density of gravitational waves is below the upper bound from Big Bang Nucleosynthesis. We also find that the density of supersymmetric cold dark matter produced by gravitino decay is consistent with Planck 2018 data over the expected range of supersymmetric particle masses.

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Section: Introductionsupporting

confidence: 55%

Section: Non-oscillatory Effective Potentialmentioning

confidence: 99%

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Non-oscillatory no-scale inflation

Ellis

Nanopoulos

Olive

et al. 2021

J. Cosmol. Astropart. Phys.

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“…For some recent attempts towards this direction see Refs. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Discussionmentioning

confidence: 99%

SUSY-breaking scenarios with a mildly violated $$\varvec{R}$$ symmetry

Pallis

2021

Eur. Phys. J. C

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New realizations of the gravity-mediated SUSY breaking are presented consistently with an R symmetry. We employ monomial superpotential terms for the hidden-sector (goldstino) superfield and Kähler potentials parameterizing compact or non-compact Kähler manifolds. Their scalar curvature may be systematically related to the R charge of the goldstino so that Minkowski solutions without fine tuning are achieved. A mild violation of the R symmetry by a higher order term in the Kähler potentials allows for phenomenologically acceptable masses for the R axion. In all cases, non-vanishing soft SUSY-breaking parameters are obtained and a solution to the $$\mu $$ μ problem of MSSM may be accommodated by conveniently applying the Giudice–Masiero mechanism.

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“…As an alternative to breaking supersymmetry with a Polonyi field, we can use the two fields in the inflationary sector to break supersymmetry, leaving a small residual vacuum energy that could be identified as dark energy. 94,115,129 Such models have been called unified no-scale attractors. We consider a simple case with a single modulus, T , and a single matter field, φ, that we associate with the inflaton, so that ξ = 2T − φ 2 /3.…”

Section: Unified No-scale Attractorsmentioning

confidence: 99%

Building models of inflation in no-scale supergravity

Ellis

García

Nagata

et al. 2020

Int. J. Mod. Phys. D

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After reviewing the motivations for cosmological inflation formulated in the formalism of supersymmetry, we argue that the appropriate framework is that of no-scale supergravity. We then show how to construct within this framework inflationary models whose predictions for the tilt in the spectrum of scalar perturbations, [Formula: see text], and the ratio, [Formula: see text], of tensor and scalar perturbations coincide with those of the [Formula: see text] model of inflation proposed by Starobinsky. A more detailed study of no-scale supergravity reveals a structure that is closely related to that of [Formula: see text] modifications of the minimal Einstein–Hilbert action for general relativity, opening avenues for constructing no-scale de Sitter and anti-de Sitter models by combining pairs of Minkowski models, as well as generalizations of the original no-scale Starobinsky models of inflation. We then discuss the phenomenology of no-scale models of inflation, including inflaton decay and reheating, and then the construction of explicit scenarios based on SU(5), SO(10) and string-motivated flipped SU(5)×U(1) GUT models. The latter provides a possible model of almost everything below the Planck scale, including neutrino masses and oscillations, the cosmological baryon asymmetry and cold dark matter, as well as [Formula: see text] and [Formula: see text].

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Unified no-scale model of modulus fixing, inflation, supersymmetry breaking, and dark energy

Abstract: We present a minimal SU(2,1)/SU(2)×U(1) no-scale model that unifies modulus fixing, Starobinsky-like inflation, an adjustable scale for supersymmetry breaking and the possibility of a small cosmological constant, a.k.a. dark energy.

Cited by 15 publications

References 66 publications

Non-oscillatory no-scale inflation

Non-oscillatory no-scale inflation

SUSY-breaking scenarios with a mildly violated $$\varvec{R}$$ symmetry

Building models of inflation in no-scale supergravity

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