Generating a thermal spectrum from nothing

Details Generating a thermal spectrum from nothing Generating a thermal spectrum from nothing

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phlb..215..473k&link_type=abstract

Physics Letters B, Volume 215, Issue 3, p. 473-476.

Physics

6

Scientific paper

It is shown that for a real scalar field in a Friedmann Universe, the distribution of particles generated form an initial vacuum is, at sufficiently short wavelengths, dominated by a thermal factor exp(-k/Θ). Allowing for a weak coupling between short and long wavelengths after the epoch of particle creation, one then anticipates an ultimate relaxation towards a thermal distribution at all wavelengths.

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