期刊
LETTERS IN MATHEMATICAL PHYSICS
卷 110, 期 2, 页码 327-364出版社
SPRINGER
DOI: 10.1007/s11005-019-01207-6
关键词
W-algebras; Conformal field theory; Isomonodromic deformations
We construct the general solution of a class of Fuchsian systems of rank N as well as the associated isomonodromic tau functions in terms of semi-degenerate conformal blocks of WNalgebra with central charge c=N-1 The simplest example is given by the tau function of the Fuji-Suzuki-Tsuda system, expressed as a Fourier transform of the 4-point conformal block with respect to intermediate weight. Along the way, we generalize the result of Bowcock and Watts on the minimal set of matrix elements of vertex operators of the WN\-algebra for generic central charge and prove several properties of semi-degenerate vertex operators and conformal blocks for c=N-1
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