Note on "Diffusive quantum criticality in three-dimensional disordered   Dirac semimetals"
  We correct erroneous conclusions from Ref.[1] regarding the values of various critical exponents, calculated to the two-loop order, and argue that $\epsilon$-expansion near two spatial dimension, with $\epsilon=d-2$ may not be reliable to address the critical properties of disorder driven Dirac semimetal-metal quantum phase transition in $d=3$. 
Bitan Roy, S. Das Sarma
cond-mat.dis-nn