# Single field inflation in supergravity with a U(1) gauge symmetry

## Abstract

A single field inflation based on a supergravity model with a shift symmetry and U(1) extension of the MSSM is analyzed. We show that one of the real components of the two U(1) charged scalar fields plays the role of inflaton with an effective scalar potential similar to the ''new chaotic inflation'' scenario. Both non-anomalous and anomalous (with Fayet-Iliopoulos term) U(1) are studied. We show that the non-anomalous U(1) scenario is consistent with data of the cosmic microwave background and recent astrophysical measurements. A possible kinetic mixing between U(1) and U(1){sub B−L} is considered in order to allow for natural decay channels of the inflaton, leading to a reheating epoch. Upper limits on the reheating temperature thus turn out to favour an intermediate (∼ O(10{sup 13}) GeV) scale B−L symmetry breaking.

- Authors:

- Centre de Physique Théorique, École Polytechnique, CNRS, 91128 Palaiseau (France)
- Center for Fundamental Physics, Zewail City of Science and Technology, 6 October City, Cairo (Egypt)

- Publication Date:

- OSTI Identifier:
- 22525233

- Resource Type:
- Journal Article

- Journal Name:
- Journal of Cosmology and Astroparticle Physics

- Additional Journal Information:
- Journal Volume: 2015; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; CHAOS THEORY; COSMOLOGICAL INFLATION; GAUGE INVARIANCE; GEV RANGE; INFLATIONARY UNIVERSE; POTENTIALS; RELICT RADIATION; SCALAR FIELDS; SCALARS; SUPERGRAVITY; SYMMETRY BREAKING; U-1 GROUPS

### Citation Formats

```
Heurtier, L., Khalil, S., and Moursy, A., E-mail: lucien.heurtier@polytechnique.edu, E-mail: skhalil@zewailcity.edu.eg, E-mail: amoursy@zewailcity.edu.eg.
```*Single field inflation in supergravity with a U(1) gauge symmetry*. United States: N. p., 2015.
Web. doi:10.1088/1475-7516/2015/10/045.

```
Heurtier, L., Khalil, S., & Moursy, A., E-mail: lucien.heurtier@polytechnique.edu, E-mail: skhalil@zewailcity.edu.eg, E-mail: amoursy@zewailcity.edu.eg.
```*Single field inflation in supergravity with a U(1) gauge symmetry*. United States. doi:10.1088/1475-7516/2015/10/045.

```
Heurtier, L., Khalil, S., and Moursy, A., E-mail: lucien.heurtier@polytechnique.edu, E-mail: skhalil@zewailcity.edu.eg, E-mail: amoursy@zewailcity.edu.eg. Thu .
"Single field inflation in supergravity with a U(1) gauge symmetry". United States. doi:10.1088/1475-7516/2015/10/045.
```

```
@article{osti_22525233,
```

title = {Single field inflation in supergravity with a U(1) gauge symmetry},

author = {Heurtier, L. and Khalil, S. and Moursy, A., E-mail: lucien.heurtier@polytechnique.edu, E-mail: skhalil@zewailcity.edu.eg, E-mail: amoursy@zewailcity.edu.eg},

abstractNote = {A single field inflation based on a supergravity model with a shift symmetry and U(1) extension of the MSSM is analyzed. We show that one of the real components of the two U(1) charged scalar fields plays the role of inflaton with an effective scalar potential similar to the ''new chaotic inflation'' scenario. Both non-anomalous and anomalous (with Fayet-Iliopoulos term) U(1) are studied. We show that the non-anomalous U(1) scenario is consistent with data of the cosmic microwave background and recent astrophysical measurements. A possible kinetic mixing between U(1) and U(1){sub B−L} is considered in order to allow for natural decay channels of the inflaton, leading to a reheating epoch. Upper limits on the reheating temperature thus turn out to favour an intermediate (∼ O(10{sup 13}) GeV) scale B−L symmetry breaking.},

doi = {10.1088/1475-7516/2015/10/045},

journal = {Journal of Cosmology and Astroparticle Physics},

issn = {1475-7516},

number = 10,

volume = 2015,

place = {United States},

year = {2015},

month = {10}

}