Lensing and imaging by a stealth defect of spacetime

@article{Klinkhamer2018LensingAI,
  title={Lensing and imaging by a stealth defect of spacetime},
  author={F. R. Klinkhamer and Z. L. Wang},
  journal={Modern Physics Letters A},
  year={2018}
}
We obtain the geodesics for the simplest possible stealth defect which has a flat spacetime. We, then, discuss the lensing properties of such a defect, and the corresponding image formation. Similar lensing properties can be expected to hold for curved-spacetime stealth defects. 

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