Topological-antitopological Fusion Equations, Pluriharmonic Maps and Special Kähler Manifolds
Topological-antitopological Fusion Equations, Pluriharmonic Maps and Special Kähler Manifolds
SummaryWe introduce the notion of a tt*-bundle. It provides a simple definition, purely in terms of real differential geometry, for geometric structures which are solutions of a general version of the equations of topological-anti a topological fusion considered by Cecotti–Vafa, Dubrovin and Hertling. Then we give a simple characterization of …