# Traversable Achronal Retrograde Domains In Spacetime

@article{Tippett2013TraversableAR, title={Traversable Achronal Retrograde Domains In Spacetime}, author={Benjamin K. Tippett and David Tsang}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2013} }

There are many spacetime geometries in general relativity which contain closed timelike curves. A layperson might say that retrograde time travel is possible in such spacetimes. To date no one has discovered a spacetime geometry which emulates what a layperson would describe as a time machine.
The purpose of this paper is to propose such a space-time geometry. In our geometry, a bubble of curvature travels along a closed trajectory. The inside of the bubble is Rindler spacetime, and the…

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