A Note on Symmetries of WDVV Equations
نویسندگان
چکیده
We investigate symmetries of Witten-Dijkgraaf-E.Verlinde-H.Verlinde (WDVV) equations proposed by Dubrovin from bi-hamiltonian point of view. These symmetries can be viewed as canonical Miura transformations between genus-zero bi-hamiltonian systems of hydrodynamic type. In particular, we show that the moduli space of two-primary models under symmetries of WDVV can be characterized by the polytropic exponent h. Furthermore, we also discuss the transformation properties of free energy at genus-one level.
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