On the Existence of "Time Machines" in General Relativity

John Byron Manchak
2009 Philosophy of Science  
Within the context of general relativity, we consider one definition of a 'time machine' proposed by Earman, Smeenk, and Wüthrich (2009). They conjecture that, under under their definition, the class of time machine spacetimes is not empty. Here, we prove this conjecture.
doi:10.1086/605806 fatcat:gd7vpux4tva3bha4fisxb4sa7y