Wormholes without conserved charges

Details Wormholes without conserved charges Wormholes without conserved charges

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..43.1869b&link_type=abstract

Physical Review D (Particles and Fields), Volume 43, Issue 6, 15 March 1991, pp.1869-1875

Astronomy and Astrophysics

Astrophysics

5

Scientific paper

We construct an explicit finite-action wormhole solution for gravity coupled to a single real, massive scalar field. The resulting wormhole is interpreted to give the partial nucleation rate for baby universes in which the scalar field is prepared in a specific state. Since the partial rate for producing these specific baby universes provides a lower bound to the total nucleation rate, this total rate cannot be zero. This contradicts the conventional wisdom that a conserved global charge is a prerequisite for baby-universe nucleation, and undermines some proposed mechanisms for evading the large-wormhole catastrophe.

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