# Higgs inflation, reheating and gravitino production in no-scale Supersymmetric GUTs

## Abstract

We extend our previous study of supersymmetric Higgs inflation in the context of no-scale supergravity and grand unification, to include models based on the flipped SU(5) and the Pati-Salam group. Like the previous SU(5) GUT model, these yield a class of inflation models whose inflation predictions interpolate between those of the quadratic chaotic inflation and Starobinsky-like inflation, while avoiding tension with proton decay limits. We further analyse the reheating process in these models, and derive the number of e-folds, which is independent of the reheating temperature. We derive the corresponding predictions for the scalar tilt and the tensor-to-scalar ratio in cosmic microwave background perturbations, as well as discussing the gravitino production following inflation.

- Authors:

- Theoretical Particle Physics and Cosmology Group,Department of Physics, King’s College London,London WC2R 2LS (United Kingdom)
- (Switzerland)
- Institute of Modern Physics and Center for High Energy Physics, Tsinghua University,Beijing 100084 (China)
- (China)
- Center of Mathematical Sciences and Applications andDepartment of Physics, Harvard University,Massachusetts 02138 (United States)

- Publication Date:

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

- OSTI Identifier:
- 22572141

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 08; Other Information: PUBLISHER-ID: JCAP08(2016)068; OAI: oai:repo.scoap3.org:16967; 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; CHAOS THEORY; COSMOLOGICAL INFLATION; HIGGS BOSONS; HIGGS MODEL; INFLATIONARY UNIVERSE; PARTICLE DECAY; PARTICLE PRODUCTION; PERTURBATION THEORY; PROTONS; RELICT RADIATION; SU-5 GROUPS; SUPERGRAVITY; SUPERSYMMETRY

### Citation Formats

```
Ellis, John, Theoretical Physics Department, CERN,CH-1211 Geneva 23, He, Hong-Jian, Center for High Energy Physics, Peking University,Beijing 100871, and Xianyu, Zhong-Zhi.
```*Higgs inflation, reheating and gravitino production in no-scale Supersymmetric GUTs*. United States: N. p., 2016.
Web. doi:10.1088/1475-7516/2016/08/068.

```
Ellis, John, Theoretical Physics Department, CERN,CH-1211 Geneva 23, He, Hong-Jian, Center for High Energy Physics, Peking University,Beijing 100871, & Xianyu, Zhong-Zhi.
```*Higgs inflation, reheating and gravitino production in no-scale Supersymmetric GUTs*. United States. doi:10.1088/1475-7516/2016/08/068.

```
Ellis, John, Theoretical Physics Department, CERN,CH-1211 Geneva 23, He, Hong-Jian, Center for High Energy Physics, Peking University,Beijing 100871, and Xianyu, Zhong-Zhi. Tue .
"Higgs inflation, reheating and gravitino production in no-scale Supersymmetric GUTs". United States.
doi:10.1088/1475-7516/2016/08/068.
```

```
@article{osti_22572141,
```

title = {Higgs inflation, reheating and gravitino production in no-scale Supersymmetric GUTs},

author = {Ellis, John and Theoretical Physics Department, CERN,CH-1211 Geneva 23 and He, Hong-Jian and Center for High Energy Physics, Peking University,Beijing 100871 and Xianyu, Zhong-Zhi},

abstractNote = {We extend our previous study of supersymmetric Higgs inflation in the context of no-scale supergravity and grand unification, to include models based on the flipped SU(5) and the Pati-Salam group. Like the previous SU(5) GUT model, these yield a class of inflation models whose inflation predictions interpolate between those of the quadratic chaotic inflation and Starobinsky-like inflation, while avoiding tension with proton decay limits. We further analyse the reheating process in these models, and derive the number of e-folds, which is independent of the reheating temperature. We derive the corresponding predictions for the scalar tilt and the tensor-to-scalar ratio in cosmic microwave background perturbations, as well as discussing the gravitino production following inflation.},

doi = {10.1088/1475-7516/2016/08/068},

journal = {Journal of Cosmology and Astroparticle Physics},

number = 08,

volume = 2016,

place = {United States},

year = {Tue Aug 30 00:00:00 EDT 2016},

month = {Tue Aug 30 00:00:00 EDT 2016}

}