Energy-density fluctuations in de Sitter space

Details Energy-density fluctuations in de Sitter space Energy-density fluctuations in de Sitter space

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phlb..179...30b&link_type=abstract

Physics Letters B, Volume 179, Issue 1-2, p. 30-36.

Physics

13

Scientific paper

Quantum fluctuations in de Sitter space or in the de Sitter phase of an inflationary universe give rise to a spectrum of classical energy-density perturbations which is scale invariant. The analysis presented in this letter is based on a consistent expansion in powers of h, and on the functional Schrödinger approach to quantum field theory in de Sitter space. The result holds for a large class of initial states of the quantum field, including the Bunch-Davies vacuum.

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