Abstract
We show that recent results on the interaction of causality-respecting particles with particles on closed timelike curves derived in [Phys. Rev. A 82, 062330 (2010)] depend on ambiguous assumptions about the form of the state which is inputted into the proposed equivalent circuit. Choosing a different form of this state leads to an opposite conclusion on the power of closed timelike curves.
- Received 13 March 2011
DOI:https://doi.org/10.1103/PhysRevA.84.056301
©2011 American Physical Society