Correlated perturbations from thermal dissipative inflation

Wo-Lung Lee, Li Zhi Fang

Research output: Contribution to journalArticle

Abstract

We study the primordial scalar perturbations in the thermal dissipative inflation where the thermal radiation persists and the density fluctuations are thermally originated. The perturbation generated in this model is hybrid, i.e., it consists of both adiabatic and isocurvature components. We find that the adiabatic and the isocurvature perturbations are correlated, even though the fluctuations of the radiation component is considered uncorrelated with that of the inftaton. Furthermore, the correlation depends mainly on the ratio between the dissipation coefficient γ and the Hubble parameter H during inflation and the predicted relation is consistent with the WMAP observation.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume45
Issue numberSUPPL.
Publication statusPublished - 2004 Oct 1

Fingerprint

perturbation
thermal radiation
dissipation
scalars
radiation
coefficients

Keywords

  • Primordial scalar perturbation
  • Thermal dissipative inflation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Correlated perturbations from thermal dissipative inflation. / Lee, Wo-Lung; Fang, Li Zhi.

In: Journal of the Korean Physical Society, Vol. 45, No. SUPPL., 01.10.2004.

Research output: Contribution to journalArticle

@article{ee4209db6c6c4bc5872edae50cf372ea,
title = "Correlated perturbations from thermal dissipative inflation",
abstract = "We study the primordial scalar perturbations in the thermal dissipative inflation where the thermal radiation persists and the density fluctuations are thermally originated. The perturbation generated in this model is hybrid, i.e., it consists of both adiabatic and isocurvature components. We find that the adiabatic and the isocurvature perturbations are correlated, even though the fluctuations of the radiation component is considered uncorrelated with that of the inftaton. Furthermore, the correlation depends mainly on the ratio between the dissipation coefficient γ and the Hubble parameter H during inflation and the predicted relation is consistent with the WMAP observation.",
keywords = "Primordial scalar perturbation, Thermal dissipative inflation",
author = "Wo-Lung Lee and Fang, {Li Zhi}",
year = "2004",
month = "10",
day = "1",
language = "English",
volume = "45",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
publisher = "Korean Physical Society",
number = "SUPPL.",

}

TY - JOUR

T1 - Correlated perturbations from thermal dissipative inflation

AU - Lee, Wo-Lung

AU - Fang, Li Zhi

PY - 2004/10/1

Y1 - 2004/10/1

N2 - We study the primordial scalar perturbations in the thermal dissipative inflation where the thermal radiation persists and the density fluctuations are thermally originated. The perturbation generated in this model is hybrid, i.e., it consists of both adiabatic and isocurvature components. We find that the adiabatic and the isocurvature perturbations are correlated, even though the fluctuations of the radiation component is considered uncorrelated with that of the inftaton. Furthermore, the correlation depends mainly on the ratio between the dissipation coefficient γ and the Hubble parameter H during inflation and the predicted relation is consistent with the WMAP observation.

AB - We study the primordial scalar perturbations in the thermal dissipative inflation where the thermal radiation persists and the density fluctuations are thermally originated. The perturbation generated in this model is hybrid, i.e., it consists of both adiabatic and isocurvature components. We find that the adiabatic and the isocurvature perturbations are correlated, even though the fluctuations of the radiation component is considered uncorrelated with that of the inftaton. Furthermore, the correlation depends mainly on the ratio between the dissipation coefficient γ and the Hubble parameter H during inflation and the predicted relation is consistent with the WMAP observation.

KW - Primordial scalar perturbation

KW - Thermal dissipative inflation

UR - http://www.scopus.com/inward/record.url?scp=10444222505&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10444222505&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:10444222505

VL - 45

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - SUPPL.

ER -