Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1995-11-30
Nucl.Phys. B471 (1996) 334-360
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, Latex, figures: figures have been introduced to represent our results on the resolvents. A better formula for the re
Scientific paper
10.1016/0550-3213(96)00164-2
We investigate the structure of the macroscopic $n$-loop amplitude obtained from the two-matrix model at the unitary minimal critical point $(m+1,m)$. We derive a general formula for the $n$-resolvent correlator at the continuum planar limit whose inverse Laplace transform provides the amplitude in terms of the boundary lengths $\ell_{i}$ and the renormalized cosmological constant $t$. The amplitude is found to contain a term consisting of $\left( \frac{\partial} {\partial t} \right)^{n-3}$ multiplied by the product of modified Bessel functions summed over their degrees which conform to the fusion rules and the crossing symmetry. This is found to be supplemented by an increasing number of other terms with $n$ which represent residual interactions of loops. We reveal the nature of these interactions by explicitly determining them as the convolution of modified Bessel functions and their derivatives for the case $n=4$ and the case $n=5$. We derive a set of recursion relations which relate the terms in the $n$-resolvents to those in the $(n-1)$-resolvents.
Anazawa Masahiro
Itoyama Hiroshi
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