Higgsed Gauge-flation

Adshead, Peter; Sfakianakis, Evangelos I.

doi:10.1007/JHEP08(2017)130

Title: Higgsed Gauge-flation

Abstract

We study a variant of Gauge-flation where the gauge symmetry is spontaneously broken by a Higgs sector. Here, we work in the Stueckelberg limit and demonstrate that the dynamics remain (catastrophically) unstable for cases where the gauge field masses satisfy γ< 2, where γ= g² 2=ψH², g is the gauge coupling, ψ is the gauge field vacuum expectation value, and H is the Hubble rate. We compute the spectrum of density uctuations and gravitational waves, and show that the model can produce observationally viable spectra. The background gauge field texture violates parity, resulting in a chiral gravitational wave spectrum. This arises due to an exponential enhancement of one polarization of the spin-2 fluctuation of the gauge field. Higgsed Gauge-flation can produce observable gravitational waves at in inflationary energy scales well below the GUT scale.

Authors:

Adshead, Peter ^[1]; Sfakianakis, Evangelos I. ^[1]

Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Physics

Publication Date:: 2017-08-29

Research Org.:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Org.:: USDOE; University of Illinois

OSTI Identifier:: 1425950

Grant/Contract Number:: SC0015655

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 8; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; Cosmology of Theories beyond the SM; Spontaneous Symmetry Breaking

Citation Formats


                    Adshead, Peter, and Sfakianakis, Evangelos I. Higgsed Gauge-flation.  United States: N. p., 2017. 
Web.  https://doi.org/10.1007/JHEP08(2017)130.

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                    Adshead, Peter, & Sfakianakis, Evangelos I. Higgsed Gauge-flation.  United States.  https://doi.org/10.1007/JHEP08(2017)130

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                    Adshead, Peter, and Sfakianakis, Evangelos I. Tue .  
"Higgsed Gauge-flation".  United States.  https://doi.org/10.1007/JHEP08(2017)130.  https://www.osti.gov/servlets/purl/1425950.

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@article{osti_1425950,

  title        = {Higgsed Gauge-flation},

  author       = {Adshead, Peter and Sfakianakis, Evangelos I.},

  abstractNote = {We study a variant of Gauge-flation where the gauge symmetry is spontaneously broken by a Higgs sector. Here, we work in the Stueckelberg limit and demonstrate that the dynamics remain (catastrophically) unstable for cases where the gauge field masses satisfy γ< 2, where γ= g2 2=ψH2, g is the gauge coupling, ψ is the gauge field vacuum expectation value, and H is the Hubble rate. We compute the spectrum of density uctuations and gravitational waves, and show that the model can produce observationally viable spectra. The background gauge field texture violates parity, resulting in a chiral gravitational wave spectrum. This arises due to an exponential enhancement of one polarization of the spin-2 fluctuation of the gauge field. Higgsed Gauge-flation can produce observable gravitational waves at in inflationary energy scales well below the GUT scale.},

  doi          = {10.1007/JHEP08(2017)130},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 8,

  volume       = 2017,

  place        = {United States},

  year         = {2017},

  month        = {8}

}

Copy to clipboard

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Works referencing / citing this record:

Probing non-Gaussian stochastic gravitational wave backgrounds with LISA
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Bartolo, Nicola; Domcke, Valerie; Figueroa, Daniel G.
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A new mechanism to enhance primordial tensor fluctuations in single field inflation
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Tensor non-gaussianities from non-minimal coupling to the inflaton
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Title: Higgsed Gauge-flation

Abstract

Citation Formats

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Generalization of the Stueckelberg Formalism to the Massive Yang-Mills Field
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