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Scaling Functions for Baby Universes in Two-Dimensional Quantum Gravity

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 نشر من قبل Steve Gubser
 تاريخ النشر 1993
  مجال البحث فيزياء
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We apply the recently proposed transfer matrix formalism to 2-dimensional quantum gravity coupled to $(2, 2k-1)$ minimal models. We find that the propagation of a parent universe in geodesic (Euclidean) time is accompanied by continual emission of baby universes and derive a distribution function describing their sizes. The $kto infty~ (cto -infty)$ limit is generally thought to correspond to classical geometry, and we indeed find a classical peak in the universe distribution function. However, we also observe dramatic quantum effects associated with baby universes at finite length scales.



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