skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Large field inflation models from higher-dimensional gauge theories

Abstract

Motivated by the recent detection of B-mode polarization of CMB by BICEP2 which is possibly of primordial origin, we study large field inflation models which can be obtained from higher-dimensional gauge theories. The constraints from CMB observations on the gauge theory parameters are given, and their naturalness are discussed. Among the models analyzed, Dante’s Inferno model turns out to be the most preferred model in this framework.

Authors:
 [1];  [2]
  1. Manipal Centre for Natural Sciences, Manipal University, Manipal, Karnataka 576104 (India)
  2. Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan R.O.C. (China)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22454511
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 02; Other Information: PUBLISHER-ID: JCAP02(2015)031; OAI: oai:repo.scoap3.org:9316; 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; COSMOLOGICAL INFLATION; GAUGE INVARIANCE; POLARIZATION; RELICT RADIATION; STRING MODELS; STRING THEORY

Citation Formats

Furuuchi, Kazuyuki, and Koyama, Yoji. Large field inflation models from higher-dimensional gauge theories. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/02/031.
Furuuchi, Kazuyuki, & Koyama, Yoji. Large field inflation models from higher-dimensional gauge theories. United States. doi:10.1088/1475-7516/2015/02/031.
Furuuchi, Kazuyuki, and Koyama, Yoji. 2015. "Large field inflation models from higher-dimensional gauge theories". United States. doi:10.1088/1475-7516/2015/02/031.
@article{osti_22454511,
title = {Large field inflation models from higher-dimensional gauge theories},
author = {Furuuchi, Kazuyuki and Koyama, Yoji},
abstractNote = {Motivated by the recent detection of B-mode polarization of CMB by BICEP2 which is possibly of primordial origin, we study large field inflation models which can be obtained from higher-dimensional gauge theories. The constraints from CMB observations on the gauge theory parameters are given, and their naturalness are discussed. Among the models analyzed, Dante’s Inferno model turns out to be the most preferred model in this framework.},
doi = {10.1088/1475-7516/2015/02/031},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 02,
volume = 2015,
place = {United States},
year = 2015,
month = 2
}
  • We consider the possibility that higher-dimensional theories may, upon reduction to four dimensions, allow extended inflation to occur. We analyze two separate models. One is a very simple toy model consisting of higher-dimensional gravity coupled to a scalar field whose potential allows for a first-order phase transition. The other is a more sophisticated model incorporating the effects of nontrivial field configurations (monopole, Casimir, and fermion bilinear condensate effects) that yield a nontrivial potential for the radius of the internal space. We find that extended inflation {ital does} {ital not} occur in these models. We also find that the bubble nucleationmore » rate in these theories is {ital time} {ital dependent} unlike the case in the original version of extended inflation.« less
  • We give a comprehensive geometric treatment of Kaluza--Klein type unifications of non-Abelian gauge theories with gravitation. The appearance of a cosmological term is noted.
  • We examine dynamical gauge-symmetry breaking and left-right asymmetry in higher-dimensional theories by taking non-Abelian gauge theory on a manifold M/sup 2/ x S/sup 2/, where M/sup 2/ and S/sup 2/ are a two-dimensional Minkowski space and a two-sphere, respectively. It is shown that a shift in fermion zero-point energies due to the compactness of the extra-dimensional space S/sup 2/ induces dynamical gauge-symmetry breaking, provided that there exist many heavy fermions. With additional Weyl fermions incorporated in M/sup 2/ x S/sup 2/ we obtain left-right--asymmetric massless fermions in M/sup 2/. The effective Lagrangian in M/sup 2/ is given. A relationship betweenmore » four-dimensional and two-dimensional anomalies is also established.« less
  • We investigate spontaneous breaking of gauge symmetries, isometry groups of extra spaces, in (4+N)-dimensional general relativities. The symmetry breaking SO(N+1)..-->..SO(N) is discussed, as a simple example. The problem reduces to a study of the effective potential's stability against deformation of the extra space, S/sup N/..-->..M/sub el//sup N/, M/sub el//sup N/ being an N-dimensional ''elliptic'' manifold. Taking into account quantum effects of scalar fields on the effective potential, we show that such gauge symmetry breaking is possible, but only for N = 5.