In this paper, we prove a characterization of (K,∞)\documentclass[12pt]{minimal}
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\begin{document}$$(K, \infty )$$\end{document}-super Perelman Ricci flows by functional inequalities and gradient estimate for the heat semigroup generated by the Witten Laplacian on manifolds equipped with time-dependent metrics and potentials. As a byproduct, we derive the Hamilton type dimension-free Harnack inequality on manifolds with (K,∞)\documentclass[12pt]{minimal}
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\begin{document}$$(K, \infty )$$\end{document}-super Perelman Ricci flows. Based on a new entropy differential inequality for the heat equation of the Witten Laplacian, we introduce a new W-entropy quantity and prove its monotonicity for the heat equation of the Witten Laplacian on complete Riemannian manifolds with the CD(K,∞)\documentclass[12pt]{minimal}
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\begin{document}$$CD(K, \infty )$$\end{document}-condition and on compact manifolds with (K,∞)\documentclass[12pt]{minimal}
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\begin{document}$$(K, \infty )$$\end{document}-super Perelman Ricci flows. Our results characterize the (K,∞)\documentclass[12pt]{minimal}
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\begin{document}$$(K, \infty )$$\end{document}-Ricci solitons and the (K,∞)\documentclass[12pt]{minimal}
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\begin{document}$$(K, \infty )$$\end{document}-Perelman Ricci flows. We also prove an entropy differential inequality on (K, m)-super Perelman Ricci flows, which can be used to characterize the (K, m)-Ricci solitons and the (K, m)-Perelman Ricci flows. Finally, we show that the Gaussian-type solitons on Rm\documentclass[12pt]{minimal}
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\begin{document}$$\mathbb {R}^m$$\end{document} provide asymptotical rigidity models for the Wm,K\documentclass[12pt]{minimal}
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\begin{document}$$W_{m, K}$$\end{document}-entropy on manifolds with the CD(-K,m)\documentclass[12pt]{minimal}
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\begin{document}$$CD(-K, m)$$\end{document}-condition.
