Kostant, Steinberg, and the Stokes matrices of the tt*-Toda equations
Kostant, Steinberg, and the Stokes matrices of the tt*-Toda equations
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tt*-Toda 方程的 Kostant、Steinberg 和 Stokes 矩阵
DOI:
10.1007/s00029-019-0494-7
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Nan-Kuo Ho
中科院分区:
文献类型:
--
作者:
Martin Guest;Nan-Kuo Ho
We propose a Lie-theoretic definition of the tt*-Toda equations for any complex simple Lie algebra, based on the concept of topological–antitopological fusion which was introduced by Cecotti and Vafa. Our main results concern the Stokes data of a certain meromorphic connection, whose isomonodromic deformations are controlled by these equations. First, by exploiting a framework introduced by Boalch, we show that this data has a remarkable structure. It can be described using Kostant’s theory of Cartan subalgebras in apposition and Steinberg’s theory of conjugacy classes of regular elements, and it can be visualized on the Coxeter Plane. Second, we compute canonical Stokes data for a certain family of solutions of the tt*-Toda equations in terms of their asymptotics. To do this, we compute the Stokes data of an auxiliary meromorphic connection, related to the original meromorphic connection by a loop group Iwasawa factorization.
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DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
R. Richardson
通讯作者:
R. Richardson
影响因子:
1.5
作者:
E. Aldrovandi;G. Falqui
通讯作者:
G. Falqui
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
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通讯作者:
B. Dubrovin
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
P. Dorey
通讯作者:
P. Dorey
影响因子:
0.7
作者:
C. Simpson
通讯作者:
C. Simpson