We establish heat kernel upper bounds for a continuous-time random walk under unbounded conductances satisfying an integrability assumption, where we correct and extend recent results in  to a general class of speed measures. The resulting heat kernel estimates are governed by the intrinsic metric induced by the speed measure. We also provide a comparison result of this metric with the usual graph distance, which is optimal in the context of the random conductance model with ergodic conductances.
"Heat kernel estimates and intrinsic metric for random walks with general speed measure under degenerate conductances." Electron. Commun. Probab. 24 1 - 17, 2019. https://doi.org/10.1214/18-ECP207