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Title: Modular Inflation and the Curvaton

Abstract

Supersymmetric Peccei-Quinn models which provide a suitable candidate for the curvaton field are studied. These models also solve the {mu} problem, while generating the Peccei-Quinn scale dynamically. The curvaton is a pseudo Nambu-Goldstone boson corresponding to an angular degree of freedom orthogonal to the axion. Its order parameter increases substantially following a phase transition during inflation.s results in a drastic amplification of the curvaton perturbations. Consequently, these models are able to accommodate low-scale inflation with Hubble parameter at the TeV scale such as modular inflation. We find that modular inflation with the orthogonal axion as curvaton can indeed account for the observations for natural values of the parameters. In particular, the spectral index can easily be made adequately lower than unity in accord with the recent data.

Authors:
 [1]
  1. Physics Division, School of Technology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki (Greece)
Publication Date:
OSTI Identifier:
20900802
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 881; Journal Issue: 1; Conference: CICHEP II: Cairo international conference on high energy physics, Cairo (Egypt), 14-17 Jan 2006; Other Information: DOI: 10.1063/1.2435289; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLIFICATION; AXIONS; COSMOLOGY; DEGREES OF FREEDOM; INFLATIONARY UNIVERSE; ORDER PARAMETERS; PERTURBATION THEORY; PHASE TRANSFORMATIONS; QUANTUM FIELD THEORY; SUPERSYMMETRY; TEV RANGE 01-10

Citation Formats

Lazarides, George. Modular Inflation and the Curvaton. United States: N. p., 2007. Web. doi:10.1063/1.2435289.
Lazarides, George. Modular Inflation and the Curvaton. United States. doi:10.1063/1.2435289.
Lazarides, George. Fri . "Modular Inflation and the Curvaton". United States. doi:10.1063/1.2435289.
@article{osti_20900802,
title = {Modular Inflation and the Curvaton},
author = {Lazarides, George},
abstractNote = {Supersymmetric Peccei-Quinn models which provide a suitable candidate for the curvaton field are studied. These models also solve the {mu} problem, while generating the Peccei-Quinn scale dynamically. The curvaton is a pseudo Nambu-Goldstone boson corresponding to an angular degree of freedom orthogonal to the axion. Its order parameter increases substantially following a phase transition during inflation.s results in a drastic amplification of the curvaton perturbations. Consequently, these models are able to accommodate low-scale inflation with Hubble parameter at the TeV scale such as modular inflation. We find that modular inflation with the orthogonal axion as curvaton can indeed account for the observations for natural values of the parameters. In particular, the spectral index can easily be made adequately lower than unity in accord with the recent data.},
doi = {10.1063/1.2435289},
journal = {AIP Conference Proceedings},
number = 1,
volume = 881,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2007},
month = {Fri Jan 12 00:00:00 EST 2007}
}