Modelling macroscopic and baby universes by fundamental strings

Abstract

We develop a model of $(1+1)$-dimensional parent and baby universes as macroscopic and microscopic fundamental closed strings. We argue, on the basis of understanding of strings from the point of view of target $D$-dimensional space-time, that processes involving baby universes/wormholes not only induce $c$-number "$\alpha$-parameters" in $(1+1)d$ action, but also lead to loss of quantum coherence for a $(1+1)d$ observer in the parent universe.

21 pages, LaTeX, no figures

References in corpus (1)

• A Possible Resolution of the Black Hole Information Puzzle

Cited by in corpus (5)

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• Baby universes and energy (non-)conservation in (1+1)-dimensional dilaton gravity