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

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:
 [1] ;  [2] ;  [3] ;  [2]
  1. Centre de Physique Théorique, École Polytechnique, CNRS,91128 Palaiseau (France)
  2. Center for Fundamental Physics, Zewail City of Science and Technology,6 October City, Cairo (Egypt)
  3. (Egypt)
Publication Date:
OSTI Identifier:
22458395
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 10; Other Information: PUBLISHER-ID: JCAP10(2015)045; OAI: oai:repo.scoap3.org:12346; 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)
Sponsoring Org:
SCOAP3, CERN, Geneva (Switzerland)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASTROPHYSICS; CHAOS THEORY; COSMOLOGICAL INFLATION; GAUGE INVARIANCE; GEV RANGE; POTENTIALS; RELICT RADIATION; SCALAR FIELDS; STANDARD MODEL; SUPERGRAVITY; SUPERSYMMETRY; SYMMETRY BREAKING