研究了不规则共形块体与Painlevé III $_3$方程的关系。准经典不规则块的泛函表示与共形场论的BPZ方程和Painlevé III $_3$的Hamilton-Jacobi方法是一致的。它直接导致了4d纯超对称规范理论的对偶Nekrasov配分函数的爆破方程的极限情况,它甚至可以被视为$c=1$和$c\to\infty$共形块的定义方程组。我们将这一分析推广到强耦合区域,其中共形块和Nekrasov函数的原始定义是未知的,并将结果应用于Matheiu方程的谱问题。最后,我们提出了在强耦合区通过量子化Painlevé III $_3$方程构造不规则共形块的方法,并由此得到了一般表达式,作为其特例,再现了$c=1$和准经典$c\to\infty$的结果.对于某些特殊点,我们还找到了$c=1$和$c=-2$不规则块在无穷远处的显式积分表示.
英文摘要:
We study the relation of irregular conformal blocks with the Painlevé III$_3$ equation. The functional representation for the quasiclassical irregular block is shown to be consistent with the BPZ equations of conformal field theory and the Hamilton-Jacobi approach to Painlevé III$_3$. It leads immediately to a limiting case of the blow-up equations for dual Nekrasov partition function of 4d pure supersymmetric gauge theory, which can be even treated as a defining system of equations for both $c=1$ and $c\to\infty$ conformal blocks. We extend this analysis to the domain of strong-coupling regime where original definition of conformal blocks and Nekrasov functions is not known and apply the results to spectral problem of the Matheiu equations. Finally, we propose a construction of irregular conformal blocks in the strong coupling region by quantization of Painlevé III$_3$ equation, and obtain in this way a general expression, reproducing $c=1$ and quasiclassical $c\to\infty$ results as its particular cases. We have also found explicit integral representations for $c=1$ and $c=-2$ irregular blocks at infinity for some special points.
Hamiltonian representation of isomonodromic deformations of twisted rational connections: The Painlevé $1$ hierarchy
Université de Lyon(里昂大学);Université Jean Monnet Saint-Étienne(圣艾蒂安让·莫内大学);CNRS UMR 5208, Institut Camille Jordan(法国国家科学研究中心 5208 联合实验室,卡米尔·若当研究所);Institut Universitaire de France(法兰西学院)
The sixth Painleve' equation as isomonodromy deformation of an irregular system: monodromy data, coalescing eigenvalues, locally holomorphic transcendents and Frobenius manifolds
Refined Painlevé/gauge theory correspondence and quantum tau functions
International School for Advanced Studies (SISSA)(高级研究国际学院);National Institute for Nuclear Physics (INFN), Section of Trieste(意大利国家核物理研究所的里雅斯特分部);Institute for Geometry and Physics (IGAP)(几何与物理研究所)
Bilinear equations on Painleve tau functions from CFT
在2012年,Gamayun,Iorgov,Lisovyy给出了Painlevé VI $τ$ ~函数的一个显式表达式,该表达式是用带有中心荷$c=1$的Liouville共形块表示的。我们证明了所提出的表达式满足Painlevé VI $τ$ ~函数双线性方程(从而证明了猜想).证明减少到共形块上的双线性关系的证明。通过将两个维拉索罗代数的直和嵌入到Majorana费米子与超级维拉索罗代数的和中,研究了这些关系.在AGT对应的框架下,共形块上的双线性方程可以用$\mathbb{C}^2/\mathbb{Z}_2$的最小分辨率上的瞬子计数来解释(类似于Nakajima-Yoshioka blow-up方程)。
Hamiltonian representation of isomonodromic deformations of general rational connections on $\mathfrak{gl}_2(\mathbb{C})$
Université Jean Monnet Saint-Étienne, CNRS, Institut Camille Jordan UMR 5208(圣艾蒂安让·莫内大学,法国国家科学研究中心,卡米尔·乔丹研究所);Institut Universitaire de France(法国高等研究院);Université de Genève, Section de mathématiques(日内瓦大学数学系)
Explicit Hamiltonian representations of meromorphic connections and duality from different perspectives: a case study
Université Jean Monnet(让·莫内大学);CNRS, Institut Camille Jordan UMR 5208(法国国家科学研究中心,坎贝尔·乔丹研究所);Institut Universitaire de France(法兰西学院);Université de Genève(日内瓦大学)