Mass density perturbations from inflation with thermal dissipation

Wo-Lung Lee, Li Zhi Fang

研究成果: 雜誌貢獻文章

摘要

We study the power spectrum of the mass density perturbations in an inflation scenario that includes thermal dissipation. We show that the condition on which the thermal fluctuations dominate the primordial density perturbations can easily be realized even for weak dissipation, i.e., the rate of dissipation is less than the Hubble expansion. We find that our spectrum of primordial density perturbations follows a power law behavior, and exhibits a "thermodynamical" feature - the amplitude and power index of the spectrum depend mainly on the thermodynamical variable M, the inflation energy scale. Comparing this result with the observed temperature fluctuations of the cosmic microwave background, we find that both amplitude and index of the power spectrum can be fairly well fitted if M ∼ 1015-1016 GeV.

原文英語
頁(從 - 到)1-10
頁數10
期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
59
發行號8
出版狀態已發佈 - 1999 四月 15

指紋

dissipation
perturbation
power spectra
microwaves
expansion
temperature
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

引用此文

Mass density perturbations from inflation with thermal dissipation. / Lee, Wo-Lung; Fang, Li Zhi.

於: Physical Review D - Particles, Fields, Gravitation and Cosmology, 卷 59, 編號 8, 15.04.1999, p. 1-10.

研究成果: 雜誌貢獻文章

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