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Title: Effects of thermal fluctuations on thermal inflation

Abstract

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]
  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. Research Center for the Early Universe (RESCEU), Graduate School of Science, The University of Tokyo, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
22524860
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 03; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMPLITUDES; BUBBLES; COMPUTERIZED SIMULATION; COSMOLOGY; FLUCTUATIONS; GRAVITATIONAL WAVES; INFLATIONARY UNIVERSE; LATTICE FIELD THEORY; NUMERICAL ANALYSIS; PHASE TRANSFORMATIONS; POTENTIALS; UNIVERSE

Citation Formats

Hiramatsu, Takashi, Miyamoto, Yuhei, and Yokoyama, Jun'ichi, E-mail: hiramatz@yukawa.kyoto-u.ac.jp, E-mail: miyamoto@resceu.s.u-tokyo.ac.jp, E-mail: yokoyama@resceu.s.u-tokyo.ac.jp. Effects of thermal fluctuations on thermal inflation. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/03/024.
Hiramatsu, Takashi, Miyamoto, Yuhei, & Yokoyama, Jun'ichi, E-mail: hiramatz@yukawa.kyoto-u.ac.jp, E-mail: miyamoto@resceu.s.u-tokyo.ac.jp, E-mail: yokoyama@resceu.s.u-tokyo.ac.jp. Effects of thermal fluctuations on thermal inflation. United States. doi:10.1088/1475-7516/2015/03/024.
Hiramatsu, Takashi, Miyamoto, Yuhei, and Yokoyama, Jun'ichi, E-mail: hiramatz@yukawa.kyoto-u.ac.jp, E-mail: miyamoto@resceu.s.u-tokyo.ac.jp, E-mail: yokoyama@resceu.s.u-tokyo.ac.jp. Sun . "Effects of thermal fluctuations on thermal inflation". United States. doi:10.1088/1475-7516/2015/03/024.
@article{osti_22524860,
title = {Effects of thermal fluctuations on thermal inflation},
author = {Hiramatsu, Takashi and Miyamoto, Yuhei and Yokoyama, Jun'ichi, E-mail: hiramatz@yukawa.kyoto-u.ac.jp, E-mail: miyamoto@resceu.s.u-tokyo.ac.jp, E-mail: yokoyama@resceu.s.u-tokyo.ac.jp},
abstractNote = {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.},
doi = {10.1088/1475-7516/2015/03/024},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 03,
volume = 2015,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}