Higher dimensional realizations of activated dynamic scaling at random   quantum transitions
  We show that many of the unusual properties of the one-dimensional random quantum Ising model are shared also by dilute quantum Ising systems in the vicinity of a certain quantum transition in {\em any} dimension $d > 1$. Thus, while these properties are not an artifact of $d=1$, they do require special circumstances in higher dimensions. 
T. Senthil and Subir Sachdev (Yale University)