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math-ph2016
Star Products that can not be induced by Drinfel'd Twists
Thomas Weber
This is the final version of my master thesis. I prove that there are no twist star products on the 2-sphere and on the higher genus pretzel surfaces deforming a symplectic structu…
math.QA2016★ 6 cited
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…