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A note on the extended dispersionless Toda hierarchy
Niann-Chern Leea, Ming-Hsien Tub a General Education Center, National Chin-Yi
University of Technology, Taichung, Taiwan
b National Chung Cheng University
Abstract:
We derive dispersionless Hirota equations for the extended dispersionless Toda hierarchy. We show that the dispersionless Hirota equations are just a direct consequence of the genus-zero topological recurrence relation for the topological $\mathbb CP^1$ model. Using the dispersionless Hirota equations, we compute the two-point functions and express the result in terms of Catalan numbers.
Keywords:
extended dispersionless Toda hierarchy, dispersionless Hirota equation, Catalan number, topological field theory.
Received: 22.10.2012
Citation:
Niann-Chern Lee, Ming-Hsien Tu, “A note on the extended dispersionless Toda hierarchy”, TMF, 175:1 (2013), 35–49; Theoret. and Math. Phys., 175:1 (2013), 475–488
Linking options:
https://www.mathnet.ru/eng/tmf8430https://doi.org/10.4213/tmf8430 https://www.mathnet.ru/eng/tmf/v175/i1/p35
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Abstract page: | 481 | Full-text PDF : | 138 | References: | 45 | First page: | 12 |
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