Gauged Nambu-Jona-Lasinio inflation

Inagaki, Tomohiro; Odintsov, Sergei D.; Sakamoto, Hiroki

doi:10.1007/s10509-015-2584-0

Cited by 19 publications

(30 citation statements)

References 59 publications

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“…So, supersymmetric finite GUTs in curved spacetime are recognized as interesting candidates in connection with the inflationary universe scenarios and possible applications to the cosmological constant problem. The renormalization group corrections have been analyzed in different single-field inflationary scenarios motivated by different nonsupersymmetric models [26,27,28,70,71,72]. For a slow-roll it is essential to have nearly flat effective potential in the region of the field amplitudes of the order of M Pl .…”

Section: Discussionmentioning

confidence: 99%

MSSM inflation and cosmological attractors

Dubinin

Петрова

Pozdeeva

et al. 2018

Int. J. Geom. Methods Mod. Phys.

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Inflationary scenarios motivated by the Minimal Supersymmetric Standard Model (MSSM)where five scalar fields are non-minimally coupled to gravity are considered. The potential of the model and the function of non-minimal coupling are polynomials of two Higgs doublet convolutions. We show that the use of the strong coupling approximation allows to obtain inflationary parameters in the case when a combination of the four scalar fields plays a role of inflaton. Numerical calculations show that the cosmological evolution leads to inflationary scenarios fully compatible with observational data for different values of the MSSM mixing angle β.

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Section: Discussionmentioning

confidence: 99%

MSSM inflation and cosmological attractors

Dubinin

Петрова

Pozdeeva

et al. 2018

Int. J. Geom. Methods Mod. Phys.

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“…RG evolution gives at least a factor of two for the value of ξ in the framework of SM Higgs-driven inflation, but moderate changes of the order of ten percent in the inflationary region. Models which are described by the RG-improved effective action [102][103][104] should provide an improved precision for observables. Careful MSSM evaluations which are beyond our analysis are appropriate in order to ensure stability of results.…”

Section: Jhep12(2017)036mentioning

confidence: 99%

MSSM-inspired multifield inflation

Dubinin

Петрова

Pozdeeva

et al. 2017

J. High Energ. Phys.

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Despite the fact that experimentally with a high degree of statistical significance only a single Standard Model-like Higgs boson is discovered at the LHC, extended Higgs sectors with multiple scalar fields not excluded by combined fits of the data are more preferable theoretically for internally consistent realistic models of particle physics. We analyze the inflationary scenarios which could be induced by the two-Higgs-doublet potential of the Minimal Supersymmetric Standard Model (MSSM) where five scalar fields have non-minimal couplings to gravity. Observables following from such MSSM-inspired multifield inflation are calculated and a number of consistent inflationary scenarios are constructed. Cosmological evolution with different initial conditions for the multifield system leads to consequences fully compatible with observational data on the spectral index and the tensor-to-scalar ratio. It is demonstrated that the strong coupling approximation is precise enough to describe such inflationary scenarios.

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“…None of them uses strong dynamics in a non-Abelian gauge theory to break scale invariance. Nonperturbative chiral symmetry breaking to produce a robust energy scale in a classically scale-invariant hidden sector[48][49][50] has been applied to an inflation model[51], but scale invariance is explicitly broken in their starting classical theory.…”

mentioning

confidence: 99%

Planck mass and inflation as consequences of dynamically broken scale invariance

et al. 2019

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Classical scale invariance represents a promising framework for model building beyond the Standard Model. However, once coupled to gravity, any scale-invariant microscopic model requires an explanation for the origin of the Planck mass. In this paper, we provide a minimal example for such a mechanism and show how the Planck mass can be dynamically generated in a strongly coupled gauge sector. We consider the case of hidden SU (Nc) gauge interactions that link the Planck mass to the condensation of a scalar bilinear operator that is nonminimally coupled to curvature. The effective theory at energies below the Planck mass contains two scalar fields: the pseudo-Nambu-Goldstone boson of spontaneously broken scale invariance (the dilaton) and a gravitational scalar degree of freedom that originates from the R 2 term in the effective action (the scalaron). We compute the effective potential for the coupled dilaton-scalaron system at one-loop order and demonstrate that it can be used to successfully realize a stage of slow-roll inflation in the early Universe. Remarkably enough, our predictions for the primordial scalar and tensor power spectra interpolate between those of standard R 2 inflation and linear chaotic inflation. For comparatively small gravitational couplings, we thus obtain a spectral index ns 0.97 and a tensor-to-scalar ratio as large as r 0.08. Contents

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Gauged Nambu-Jona-Lasinio inflation

Cited by 19 publications

References 59 publications

MSSM inflation and cosmological attractors

MSSM inflation and cosmological attractors

MSSM-inspired multifield inflation

Planck mass and inflation as consequences of dynamically broken scale invariance

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