Thermality in de Sitter spacetime and holography

Das, Sumit R. (2002) Thermality in de Sitter spacetime and holography Physical Review D, 66 (2). 025018_1-025018_11. ISSN 0556-2821

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Assuming the existence of a dS/conformal field theory correspondence we study the holograms of sources moving along geodesics in the bulk by calculating the one point functions they induce in the boundary theory. In analogy with a similar study of uniformly accelerated sources in AdS spacetime, we argue that comoving geodesic observers correspond to a coordinate system on the boundary in which the one point function is constant. For dS3 we show that the conformal transformations on the boundary that achieve this, when continued suitably to Lorentzian signature, induce nontrivial Bogoliubov transformations between modes, leading to a thermal spectrum. This may be regarded as a holographic signature of thermality detected by bulk geodesic observers.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:8742
Deposited On:28 Oct 2010 10:55
Last Modified:31 May 2011 05:09

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