Gravitational instantons and quantisation of the cosmological constant

Details Gravitational instantons and quantisation of the cosmological constant Gravitational instantons and quantisation of the cosmological constant

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phlb..283...52m&link_type=abstract

Physics Letters B, Volume 283, Issue 1-2, p. 52-54.

Physics

3

Scientific paper

Complex gravitational instantons, introduced recently into quantum cosmology, may be important in the small scale structure of spacetime. If the cosmological constant is negative, then there is a complex instanton which breaks the electromagnetic gauge symmetry unless the cosmological constant is quantised, Λ=-3e2/N2, where e is the unit of charge and N is a natural number.

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