# Scale genesis and gravitational wave in a classically scale invariant extension of the standard model

## Abstract

We assume that the origin of the electroweak (EW) scale is a gauge-invariant scalar-bilinear condensation in a strongly interacting non-abelian gauge sector, which is connected to the standard model via a Higgs portal coupling. The dynamical scale genesis appears as a phase transition at finite temperature, and it can produce a gravitational wave (GW) background in the early Universe. We find that the critical temperature of the scale phase transition lies above that of the EW phase transition and below few O(100) GeV and it is strongly first-order. We calculate the spectrum of the GW background and find the scale phase transition is strong enough that the GW background can be observed by DECIGO.

- Authors:

- Institute for Theoretical Physics, Kanazawa University,Kanazawa 920-1192 (Japan)
- Department of Physics, Kyoto University,Kyoto 606-8502 (Japan)
- (Germany)

- Publication Date:

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

- OSTI Identifier:
- 22572196

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 12; Other Information: PUBLISHER-ID: JCAP12(2016)001; OAI: oai:repo.scoap3.org:18148; 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:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMOLOGICAL MODELS; COSMOLOGY; CRITICAL TEMPERATURE; GAUGE INVARIANCE; GEV RANGE 10-100; GRAVITATIONAL WAVES; NONLUMINOUS MATTER; ORIGIN; PHASE TRANSFORMATIONS; RELICT RADIATION; SCALE INVARIANCE; STANDARD MODEL; UNIVERSE; WEINBERG-SALAM GAUGE MODEL

### Citation Formats

```
Kubo, Jisuke, Yamada, Masatoshi, and Institut für Theoretische Physik, Universität Heidelberg,Philosophenweg 16, 69120 Heidelberg.
```*Scale genesis and gravitational wave in a classically scale invariant extension of the standard model*. United States: N. p., 2016.
Web. doi:10.1088/1475-7516/2016/12/001.

```
Kubo, Jisuke, Yamada, Masatoshi, & Institut für Theoretische Physik, Universität Heidelberg,Philosophenweg 16, 69120 Heidelberg.
```*Scale genesis and gravitational wave in a classically scale invariant extension of the standard model*. United States. doi:10.1088/1475-7516/2016/12/001.

```
Kubo, Jisuke, Yamada, Masatoshi, and Institut für Theoretische Physik, Universität Heidelberg,Philosophenweg 16, 69120 Heidelberg. Thu .
"Scale genesis and gravitational wave in a classically scale invariant extension of the standard model". United States.
doi:10.1088/1475-7516/2016/12/001.
```

```
@article{osti_22572196,
```

title = {Scale genesis and gravitational wave in a classically scale invariant extension of the standard model},

author = {Kubo, Jisuke and Yamada, Masatoshi and Institut für Theoretische Physik, Universität Heidelberg,Philosophenweg 16, 69120 Heidelberg},

abstractNote = {We assume that the origin of the electroweak (EW) scale is a gauge-invariant scalar-bilinear condensation in a strongly interacting non-abelian gauge sector, which is connected to the standard model via a Higgs portal coupling. The dynamical scale genesis appears as a phase transition at finite temperature, and it can produce a gravitational wave (GW) background in the early Universe. We find that the critical temperature of the scale phase transition lies above that of the EW phase transition and below few O(100) GeV and it is strongly first-order. We calculate the spectrum of the GW background and find the scale phase transition is strong enough that the GW background can be observed by DECIGO.},

doi = {10.1088/1475-7516/2016/12/001},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 12,

volume = 2016,

place = {United States},

year = {Thu Dec 01 00:00:00 EST 2016},

month = {Thu Dec 01 00:00:00 EST 2016}

}

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