Quantum Cohomology via Vicious and Osculating Walkers
Quantum Cohomology via Vicious and Osculating Walkers
复制标题
通过恶性步行者和密切步行者的量子上同调
DOI:
10.1007/s11005-014-0685-2
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发表时间:
2014
影响因子:
1.2
通讯作者:
Korff C
中科院分区:
文献类型:
--
作者:
Korff C
We relate the counting of rational curves intersecting Schubert varieties of the Grassmannian to the counting of certain non-intersecting lattice paths on the cylinder, so-called vicious and osculating walkers. These lattice paths form exactly solvable statistical mechanics models and are obtained from solutions to the Yang–Baxter equation. The eigenvectors of the transfer matrices of these models yield the idempotents of the Verlinde algebra of the gauged-WZNW model. The latter is known to be closely related to the small quantum cohomology ring of the Grassmannian. We establish further that the partition functions of the vicious and osculating walker model are given in terms of Postnikov’s toric Schur functions and can be interpreted as generating functions for Gromov–Witten invariants. We reveal an underlying quantum group structure in terms of Yang–Baxter algebras and use it to give a generating formula for toric Schur functions in terms of divided difference operators which appear in known representations of the nil-Hecke algebra.
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影响因子:
0.9
作者:
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通讯作者:
A. Bertram;I. Ciocan-Fontanine;W. Fulton
DOI:
--
发表时间:
1999
期刊:
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DOI:
--
发表时间:
2011
期刊:
影响因子:
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C. Korff
影响因子:
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作者:
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DOI:
--
发表时间:
2000
期刊:
影响因子:
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作者:
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通讯作者:
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