Universal correction to the inflationary vacuum

Brian R. Greene, Maulik Parikh, Jan Pieter Van Der Schaar

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The Bunch-Davies state appears precisely thermal to a free-falling observer in de Sitter space. However, precise thermality is unphysical because it violates energy conservation. Instead, the true spectrum must take a certain different form, with the Boltzmann factor exp (-βω k) replaced by exp (ΔS), where S is the entropy of the de Sitter horizon. The deviation from precise thermality can be regarded as an explicitly calculable correction to the Bunch-Davies state. This correction is mandatory in that it relies only on energy conservation. The modified Bunch-Davies state leads, in turn, to an (H/M p) 2 modification of the primordial power spectrum of inflationary perturbations, which we determine.

Original languageEnglish (US)
Article number057
JournalJournal of High Energy Physics
Volume2006
Issue number4
DOIs
StatePublished - Apr 1 2006
Externally publishedYes

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energy conservation
vacuum
falling
horizon
power spectra
entropy
deviation
perturbation

Keywords

  • Classical Theories of Gravity
  • Cosmology of Theories beyond the SM

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Universal correction to the inflationary vacuum. / Greene, Brian R.; Parikh, Maulik; Van Der Schaar, Jan Pieter.

In: Journal of High Energy Physics, Vol. 2006, No. 4, 057, 01.04.2006.

Research output: Contribution to journalArticle

Greene, Brian R. ; Parikh, Maulik ; Van Der Schaar, Jan Pieter. / Universal correction to the inflationary vacuum. In: Journal of High Energy Physics. 2006 ; Vol. 2006, No. 4.
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