Mass density perturbations from inflation with thermal dissipation

Wolung Lee, Li Zhi Fang

研究成果: 雜誌貢獻期刊論文同行評審

46 引文 斯高帕斯(Scopus)

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 (Formula presented).

原文英語
期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
59
發行號8
DOIs
出版狀態已發佈 - 1999 三月 11
對外發佈

ASJC Scopus subject areas

  • 核能與高能物理
  • 物理與天文學(雜項)

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