Problems with modelling closed timelike curves as post-selected   teleportation
  In this comment on S.Lloyd, et al, Phys.Rev.Lett. 106, 040403 (2011), we show that modelling closed timelike curves (CTCs) as post-selected teleportation allows signalling to past times before the creation of the CTC and allows information paradoxes to form. 
T.C.Ralph
quant-ph