Quantum instabilities and the cosmological constant

Details Quantum instabilities and the cosmological constant Quantum instabilities and the cosmological constant

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phlb..166..285h&link_type=abstract

Physics Letters B, Volume 166, Issue 3, p. 285-288.

Physics

12

Scientific paper

Several recent studies have found that the stress-energy of quantum fields in de Sitter space will take the form of a growing effective cosmological constant (Λ) with sign opposite to that of the background spacetime. This leads, in self-consistent scheme, to the spontaneous decay of the effective value of Λ, and has been proposed as a possible solution to the ``problem of the cosmological constant''. By modeling the back-reaction of the spacetime to the quantum-stress-energy, it is shown that it is unlikely that such quantum instabilities can lower the value of Λ by a large factor and yield a universe even remotely like our own.

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