Higgs scalaron mixed inflation
We discuss the inflationary dynamics of a system with a non-minimal coupling between the Higgs and the Ricci scalar as well as a Ricci scalar squared term. There are two scalar modes in this system, i.e. the Higgs and the spin-zero mode of the graviton, or the scalaron. We study the two-field dynami...
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| Language: | English |
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Elsevier
2017-07-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317303349 |
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doaj-7094f0df637847a1a615e456d172cd4e2020-11-25T00:37:50ZengElsevierPhysics Letters B0370-26931873-24452017-07-01770C40341110.1016/j.physletb.2017.04.060Higgs scalaron mixed inflationYohei EmaWe discuss the inflationary dynamics of a system with a non-minimal coupling between the Higgs and the Ricci scalar as well as a Ricci scalar squared term. There are two scalar modes in this system, i.e. the Higgs and the spin-zero mode of the graviton, or the scalaron. We study the two-field dynamics of the Higgs and the scalaron during inflation, and clarify the condition where inflation is dominated by the Higgs/scalaron. We also find that the cut-off scale at around the vacuum is as large as the Planck scale, and hence there is no unitarity issue, although there is a constraint on the couplings from the perturbativity of the theory at around the vacuum.http://www.sciencedirect.com/science/article/pii/S0370269317303349 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yohei Ema |
| spellingShingle |
Yohei Ema Higgs scalaron mixed inflation Physics Letters B |
| author_facet |
Yohei Ema |
| author_sort |
Yohei Ema |
| title |
Higgs scalaron mixed inflation |
| title_short |
Higgs scalaron mixed inflation |
| title_full |
Higgs scalaron mixed inflation |
| title_fullStr |
Higgs scalaron mixed inflation |
| title_full_unstemmed |
Higgs scalaron mixed inflation |
| title_sort |
higgs scalaron mixed inflation |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 1873-2445 |
| publishDate |
2017-07-01 |
| description |
We discuss the inflationary dynamics of a system with a non-minimal coupling between the Higgs and the Ricci scalar as well as a Ricci scalar squared term. There are two scalar modes in this system, i.e. the Higgs and the spin-zero mode of the graviton, or the scalaron. We study the two-field dynamics of the Higgs and the scalaron during inflation, and clarify the condition where inflation is dominated by the Higgs/scalaron. We also find that the cut-off scale at around the vacuum is as large as the Planck scale, and hence there is no unitarity issue, although there is a constraint on the couplings from the perturbativity of the theory at around the vacuum. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269317303349 |
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AT yoheiema higgsscalaronmixedinflation |
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