On the Connection Between 2d Topological Gravity and the Reduced Hermitian Matrix Model
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چکیده
We discuss how concepts such as geodesic length and the volume of space-time can appear in 2d topological gravity. We then construct a detailed mapping between the reduced Hermitian matrix model and 2d topological gravity at genus zero. This leads to a complete solution of the counting problem for planar graphs with vertices of even coordination number. The connection between multi-critical matrix models and multi-critical topological gravity at genus zero is studied in some detail. PACS: 04.60.-m
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تاریخ انتشار 1997