New light on time machines: Against the chronology protection conjecture
Abstract
I construct a spacetime with closed timelike curves and without closed causal geodesics. There is a noncompactly generated Cauchy horizon separating the region with closed timelike curves from that without closed causal curves. This spacetime might be stable against the vacuum fluctuation of matter fields. Whether such a spacetime is stable against the vacuum fluctuation of a gravitational field is an open question.
- Publication:
-
Physical Review D
- Pub Date:
- November 1994
- DOI:
- 10.1103/PhysRevD.50.R6037
- Bibcode:
- 1994PhRvD..50.6037L
- Keywords:
-
- 04.20.Gz;
- 04.20.Jb;
- 04.62.+v;
- Spacetime topology causal structure spinor structure;
- Exact solutions;
- Quantum field theory in curved spacetime