Comment on "PIC simulations of circularly polarised Alfv\'en wave phase   mixing: A new mechanism for electron acceleration in collisionless plasmas"   by Tsiklauri et al
  Tsiklauri et al. recently published a theoretical model of electron acceleration by Alfv\'en waves in a nonuniform collisionless plasmas. We compare their work with a series of results published earlier by an another team, of which Tsiklauri et al. were probably unaware. We show that these two series of works, apparently conducted independently, lead to the same conclusions. This reinforces the theoretical consistency of the model. 
Fabrice Mottez (LUTH), Vincent G\'enot (CESR), Philippe Louarn (CESR)