Comment on "Quantitative Condition is Necessary in Guaranteeing the   Validity of the Adiabatic Approximation" [arXiv:1004.3100]
  Recently, the authors of Ref.1[arXiv:1004.3100] claimed that they have proven the traditional adiabatic condition is a necessary condition. Here, it is claimed that there are some mistakes and an artificial over-strong constraint in [1], making its result inconvincible. 
Meisheng Zhao and Jianda Wu
quant-ph