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Some Remarks About the Two-Matrix Penner Model and the Kazakov-Migdal Model | Yu. Makeenko
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8 Jun 1993 | Journal: | Phys. Lett. B314 (1993) 197-205 | Abstract: | I consider the Hermitean two-matrix model with a logarithmic potential which is associated in the one-matrix case with the Penner model. Using loop equations I find an explicit solution of the model at large N (or in the spherical approximation) and demonstrate that it solves the corresponding Riemann-Hilbert problem. I construct the potential of the Kazakov-Migdal model on a D-dimensional lattice, which turns out to be a sum of two logarithms as well, whose large-N solution is given by the same formulas. In the "naive" continuum limit this potential recovers in D<4 dimensions the standard scalar theory with quartic self-interaction. I exploit the solution to calculate explicitly the pair correlator of gauge fields in the Kazakov-Migdal model with the logarithmic potential. | Source: | arXiv, hep-th/9306043 | Services: | Forum | Review | PDF | Favorites |
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