86 citations · 275 across the 24 of their papers we have counts for
3 papers · 1 filter
Infinitesimal Automorphisms of VB-groupoids and algebroids
Chiara Esposito, Alfonso Giuseppe Tortorella, Luca Vitagliano
VB-groupoids and algebroids are vector bundle objects in the categories of Lie groupoids and Lie algebroids respectively, and they are related via the Lie functor. VB-groupoids and…
A Universal Construction of Universal Deformation Formulas, Drinfel'd Twists and their Positivity
Chiara Esposito, Jonas Schnitzer, Stefan Waldmann
In this paper we provide an explicit construction of star products on U(g)-module algebras by using the Fedosov approach. This construction allows us to give a constructive proof t…
Obstructions for Twist Star Products
Pierre Bieliavsky, Chiara Esposito, Stefan Waldmann +1
In this short note we point out that not every star product is induced by a Drinfel'd twist by showing that not every Poisson structure is induced by a classical -matrix. Exampl…