Title: Poisson Structures and Potentials,
Abstract: We introduce a notion of weakly log-canonical Poisson structures on positive
varieties with potentials. Such a Poisson structure is log-canonical up to
terms dominated by the potential. To a compatible real form of a weakly
log-canonical Poisson variety we assign an integrable system on the product of
a certain real convex polyhedral cone (the tropicalization of the variety) and
a compact torus.
We apply this theory to the dual Poisson-Lie group $G^*$ of a
simply-connected semisimple complex Lie group $G$. We define a positive
structure and potential on $G^*$ and show that the natural Poisson-Lie
structure on $G^*$ is weakly log-canonical with respect to this positive
structure and potential.
For $K \subset G$ the compact real form, we show that the real form $K^*
\subset G^*$ is compatible and prove that the corresponding integrable system
is defined on the product of the decorated string cone and the compact torus of
dimension $\frac{1}{2}({\rm dim} \, G - {\rm rank} \, G)$.