# Minimal but non-minimal inflation and electroweak symmetry breaking

## Abstract

We consider the most minimal scale invariant extension of the standard model that allows for successful radiative electroweak symmetry breaking and inflation. The framework involves an extra scalar singlet, that plays the rôle of the inflaton, and is compatibile with current experimental bounds owing to the non-minimal coupling of the latter to gravity. This inflationary scenario predicts a very low tensor-to-scalar ratio r≈10{sup −3}, typical of Higgs-inflation models, but in contrast yields a scalar spectral index n{sub s}≃0.97 which departs from the Starobinsky limit. We briefly discuss the collider phenomenology of the framework.

- Authors:

- National Institute of Chemical Physics and Biophysics,Rävala 10, 10143 Tallinn (Estonia)
- (Estonia)

- Publication Date:

- Sponsoring Org.:
- SCOAP3, CERN, Geneva (Switzerland)

- OSTI Identifier:
- 22572161

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 10; Other Information: PUBLISHER-ID: JCAP10(2016)010; OAI: oai:repo.scoap3.org:17554; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMOLOGICAL INFLATION; HIGGS BOSONS; HIGGS MODEL; INFLATIONARY UNIVERSE; INFLATONS; SCALARS; SCALE INVARIANCE; STANDARD MODEL; SYMMETRY BREAKING; TENSORS

### Citation Formats

```
Marzola, Luca, Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu, and Racioppi, Antonio.
```*Minimal but non-minimal inflation and electroweak symmetry breaking*. United States: N. p., 2016.
Web. doi:10.1088/1475-7516/2016/10/010.

```
Marzola, Luca, Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu, & Racioppi, Antonio.
```*Minimal but non-minimal inflation and electroweak symmetry breaking*. United States. doi:10.1088/1475-7516/2016/10/010.

```
Marzola, Luca, Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu, and Racioppi, Antonio. Fri .
"Minimal but non-minimal inflation and electroweak symmetry breaking". United States.
doi:10.1088/1475-7516/2016/10/010.
```

```
@article{osti_22572161,
```

title = {Minimal but non-minimal inflation and electroweak symmetry breaking},

author = {Marzola, Luca and Institute of Physics, University of Tartu,Ravila 14c, 50411 Tartu and Racioppi, Antonio},

abstractNote = {We consider the most minimal scale invariant extension of the standard model that allows for successful radiative electroweak symmetry breaking and inflation. The framework involves an extra scalar singlet, that plays the rôle of the inflaton, and is compatibile with current experimental bounds owing to the non-minimal coupling of the latter to gravity. This inflationary scenario predicts a very low tensor-to-scalar ratio r≈10{sup −3}, typical of Higgs-inflation models, but in contrast yields a scalar spectral index n{sub s}≃0.97 which departs from the Starobinsky limit. We briefly discuss the collider phenomenology of the framework.},

doi = {10.1088/1475-7516/2016/10/010},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 10,

volume = 2016,

place = {United States},

year = {Fri Oct 07 00:00:00 EDT 2016},

month = {Fri Oct 07 00:00:00 EDT 2016}

}

Other availability

Save to My Library

You must Sign In or Create an Account in order to save documents to your library.