An alternate derivation of radiation in an inflationary universe

Details An alternate derivation of radiation in an inflationary universe An alternate derivation of radiation in an inflationary universe

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phlb..129..397b&link_type=abstract

Physics Letters B, Volume 129, Issue 6, p. 397-400.

Physics

14

Scientific paper

We derive the nontrivial nature of the quantum field vacuum state in the de Sitter phase of an inflationary universe by explicity calculating the vacuum expectation value of the energy-momentum tensor of a free massless scalar field. This yields an independent verification of the occurrence of Hawking radiation.
For advice and encouragement I thank Doug Eardley, Luis Alvarez-Gaumé, Bill Press and Ron Kahn.

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