Modelling macroscopic and baby universes by fundamental strings

Details Modelling macroscopic and baby universes by fundamental strings Modelling macroscopic and baby universes by fundamental strings

1995-05-25

arxiv.org/abs/hep-th/9505159v2

Nucl.Phys. B453 (1995) 395-412

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, LaTeX, no figures

Scientific paper

10.1016/0550-3213(95)00413-M

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.

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