Absence of the polar Kerr effect in the helical loop-current model   [Phys. Rev. Lett. 111, 047005 (2013)]
  We correct our claim made in Phys. Rev. Lett. 111, 047005 (2013) that the chiral texture of loop currents can explain the experimentally observed polar Kerr effect in cuprates. Although our model does contain a bulk gyrotropic term and produces a non-zero Faraday effect on transmission, the reflection matrix of light is, nevertheless, symmetric and gives zero polar Kerr effect. 
Sergey S. Pershoguba, Kostyantyn Kechedzhi, Victor M. Yakovenko
cond-mat.str-el