Abstract
We study anisotropic inflationary solutions in massive Gauge-flation. We work with the theory in both the Stueckelberg and dynamical symmetry-breaking limits and demonstrate that extended periods of accelerated anisotropic expansion are possible. In the case of dynamical symmetry breaking, we show that spacetime can transition from isotropic quasi-de Sitter space to an accelerating Bianchi spacetime due to a rolling Higgs field - the spacetime can develop hair. Similarly, symmetry restoring transitions are possible from accelerating Bianchi spacetime to quasi-de Sitter space - the spacetime can lose its hair. These transitions can be arranged to occur quickly, within an e-folding or so, or over tens of e-folds.
| Original language | English (US) |
|---|---|
| Article number | 052 |
| Journal | Journal of Cosmology and Astroparticle Physics |
| Volume | 2018 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 24 2018 |
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Keywords
- Inflation
- initial conditions and eternal universe
ASJC Scopus subject areas
- Astronomy and Astrophysics
Cite this
Anisotropic massive gauge-flation. / Adshead, Peter; Liu, Aike.
In: Journal of Cosmology and Astroparticle Physics, Vol. 2018, No. 7, 052, 24.07.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anisotropic massive gauge-flation
AU - Adshead, Peter
AU - Liu, Aike
PY - 2018/7/24
Y1 - 2018/7/24
N2 - We study anisotropic inflationary solutions in massive Gauge-flation. We work with the theory in both the Stueckelberg and dynamical symmetry-breaking limits and demonstrate that extended periods of accelerated anisotropic expansion are possible. In the case of dynamical symmetry breaking, we show that spacetime can transition from isotropic quasi-de Sitter space to an accelerating Bianchi spacetime due to a rolling Higgs field - the spacetime can develop hair. Similarly, symmetry restoring transitions are possible from accelerating Bianchi spacetime to quasi-de Sitter space - the spacetime can lose its hair. These transitions can be arranged to occur quickly, within an e-folding or so, or over tens of e-folds.
AB - We study anisotropic inflationary solutions in massive Gauge-flation. We work with the theory in both the Stueckelberg and dynamical symmetry-breaking limits and demonstrate that extended periods of accelerated anisotropic expansion are possible. In the case of dynamical symmetry breaking, we show that spacetime can transition from isotropic quasi-de Sitter space to an accelerating Bianchi spacetime due to a rolling Higgs field - the spacetime can develop hair. Similarly, symmetry restoring transitions are possible from accelerating Bianchi spacetime to quasi-de Sitter space - the spacetime can lose its hair. These transitions can be arranged to occur quickly, within an e-folding or so, or over tens of e-folds.
KW - Inflation
KW - initial conditions and eternal universe
UR - http://www.scopus.com/inward/record.url?scp=85051481616&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85051481616&partnerID=8YFLogxK
U2 - 10.1088/1475-7516/2018/07/052
DO - 10.1088/1475-7516/2018/07/052
M3 - Article
AN - SCOPUS:85051481616
VL - 2018
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
SN - 1475-7516
IS - 7
M1 - 052
ER -