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arXiv · hep-th/9505159

Modelling macroscopic and baby universes by fundamental strings

V. A. Rubakov
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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 "$α$-parameters" in $(1+1)d$ action, but also lead to loss of quantum coherence for a $(1+1)d$ observer in the parent universe.

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V. A. Rubakov. 1995-06-29. Modelling macroscopic and baby universes by fundamental strings. https://doi.org/10.1016/0550-3213(95)00413-m

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