3 papers
math.DG2026
On tt*-structures from -type Stokes data
Tadashi Udagawa
Cecotti and Vafa introduced the topological anti-topological fusion (tt*)-equation, whose solutions describe massive deformations of supersymmetric conformal field theories. We pro…
hep-th2025
The tt*-structure for the quantum cohomology of complex Grassmannian
Tadashi Udagawa
The tt*-equation (topological-anti-topological fusion equation) was introduced by S. Cecotti and C. Vafa for describing massive deformation of supersymmetric conformal field theori…
math.DG2025
Classification of Toda-type tt*-structures and -fixed points
Tadashi Udagawa
We classify Toda-type tt*-structures in terms of the anti-symmetry condition. A Toda-type tt*-structure is a flat bundle whose flatness condition is the tt*-Toda equation (Guest-It…