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Title: Effects of thermal fluctuations on thermal inflation

The mechanism of thermal inflation, a relatively short period of accelerated expansion after primordial inflation, is a desirable ingredient for a certain class of particle physics models if they are not to be in contention with the cosmology of the early Universe. Though thermal inflation is most simply described in terms of a thermal effective potential, a thermal environment also gives rise to thermal fluctuations that must be taken into account. We numerically study the effects of these thermal fluctuations using lattice simulations. We conclude that though they do not ruin the thermal inflation scenario, the phase transition at the end of thermal inflation proceeds through phase mixing and is therefore not accompanied by the formations of bubbles nor appreciable amplitude of gravitational waves.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
  2. Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo 113-0033 (Japan)
  3. (RESCEU), Graduate School of Science, The University of Tokyo, Tokyo 113-0033 (Japan)
  4. Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo, Tokyo 113-0033 (Japan)
  5. (Kavli IPMU), WPI, TODIAS, The University of Tokyo, Kashiwa, Chiba, 277-8568 (Japan)
Publication Date:
OSTI Identifier:
22454523
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 03; Other Information: PUBLISHER-ID: JCAP03(2015)024; OAI: oai:repo.scoap3.org:9549; 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; AMPLITUDES; COSMOLOGICAL INFLATION; COSMOLOGY; FLUCTUATIONS; GRAVITATIONAL WAVES; LATTICE FIELD THEORY; NUMERICAL ANALYSIS; PHASE TRANSFORMATIONS; POTENTIALS; UNIVERSE