Phys. Rev. D 50, R2353–R2355 (1994)Kinks and time machines
We show that it is not possible to smooth out the metric on the Deutsch-Politzer time machine to obtain an everywhere nonsingular asymptotically flat Lorentzian metric. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.50.R2353
DOI:
10.1103/PhysRevD.50.R2353
PACS:
04.20.Gz, 03.65.Bz
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