“…The Painlevé equation looks like a sophisticated non-linear equation of a rather strange form. However, it just a particular example of a set of Toda τ -functions satisfying the usual bilinear Hirota relation [42]…”
Section: Painlevé VI Equation For Fourier Transformed Conformal Blocksmentioning
Conformal blocks and their AGT relations to LMNS integrals and Nekrasov
functions are best described by "conformal" (or Dotsenko-Fateev) matrix models,
but in non-Gaussian Dijkgraaf-Vafa phases, where different eigenvalues are
integrated along different contours. In such matrix models, the determinant
representations and integrability are restored only after a peculiar Fourier
transform in the numbers of integrations. From the point of view of conformal
blocks, this is Fourier transform w.r.t. the intermediate dimensions and this
explains why such quantities are expressed through tau-functions in Miwa
parametrization, with external dimensions playing the role of multiplicities.
In particular, these determinant representations provide solutions to the
Painlev\'e VI equation. We also explain how this pattern looks in the pure
gauge limit, which is described by the Brezin-Gross-Witten matrix model.Comment: 15 page
“…The Painlevé equation looks like a sophisticated non-linear equation of a rather strange form. However, it just a particular example of a set of Toda τ -functions satisfying the usual bilinear Hirota relation [42]…”
Section: Painlevé VI Equation For Fourier Transformed Conformal Blocksmentioning
Conformal blocks and their AGT relations to LMNS integrals and Nekrasov
functions are best described by "conformal" (or Dotsenko-Fateev) matrix models,
but in non-Gaussian Dijkgraaf-Vafa phases, where different eigenvalues are
integrated along different contours. In such matrix models, the determinant
representations and integrability are restored only after a peculiar Fourier
transform in the numbers of integrations. From the point of view of conformal
blocks, this is Fourier transform w.r.t. the intermediate dimensions and this
explains why such quantities are expressed through tau-functions in Miwa
parametrization, with external dimensions playing the role of multiplicities.
In particular, these determinant representations provide solutions to the
Painlev\'e VI equation. We also explain how this pattern looks in the pure
gauge limit, which is described by the Brezin-Gross-Witten matrix model.Comment: 15 page
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.