Abstract
Integrability of equations of topological-antitopological fusion (being proposed by Cecotti and Vafa) describing the ground state metric on a given 2D topological field theory (TFT) model, is proved. For massive TFT models these equations are reduced to a universal form (being independent on the given TFT model) by gauge transformations. For massive perturbations of topological conformal field theory models the separatrix solutions of the equations bounded at infinity are found by the isomonodromy deformations method. Also it is shown that the ground state metric together with some part of the underlined TFT structure can be parametrized by pluriharmonic maps of the coupling space to the symmetric space of real positive definite quadratic forms.
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Communicated by N.Yu. Reshetikhin
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Dubrovin, B. Geometry and integrability of topological-antitopological fusion. Commun.Math. Phys. 152, 539–564 (1993). https://doi.org/10.1007/BF02096618
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DOI: https://doi.org/10.1007/BF02096618