Does the wormhole mechanism for vanishing cosmological constant work in lorentzian gravity?

Details Does the wormhole mechanism for vanishing cosmological constant work in lorentzian gravity? Does the wormhole mechanism for vanishing cosmological constant work in lorentzian gravity?

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phlb..224...53c&link_type=abstract

Physics Letters B, Volume 224, Issue 1-2, p. 53-57.

Physics

14

Scientific paper

A proposal by Farhi that the wave function of the universe be defined as a path integral over Minkowski signature metrics is investigated in minisuperspace. We find that the wave function is not exponentially peaked at small values of the cosmological constant, in contrast to several recent claims. We also note that this definition of the wave function is consistent with Hartle-Hawking boundary conditions, but inconsistent with Vilenkin's tunneling boundary condition.

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