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arxiv: 1104.3204 · v2 · pith:3XEI46MBnew · submitted 2011-04-16 · 🧮 math.DG

Asymptotic estimates on the time derivative of Φ-entropy on Riemannian manifolds

classification 🧮 math.DG
keywords derivativeentropytimeasymptoticboundgroupheisenbergbakry-emery
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In this note, we obtain the asymptotic estimate for the time derivative of the $\Phi$-entropy in terms of the lower bound on the Bakry-Emery $\Gamma_2$ curvature. In the cases of Hyperbolic space and Heisenberg group, we show that the time derivative of the $\Phi$-entropy is non-increasing, and we also get sharp asymptotic bound for the time derivative of the entropy in the Heisenberg group.

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