Rapidly moving cosmic strings and chronology protection

Details Rapidly moving cosmic strings and chronology protection Rapidly moving cosmic strings and chronology protection

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..44.2214o&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 44, Issue 8, 15 October 1991, pp.R2214-R2215

Physics

24

Exact Solutions, Relativity And Gravitation, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

Recently, Gott has provided a family of solutions of the Einstein equations describing pairs of parallel cosmic strings in motion. He has shown that if the strings' relative velocity is sufficiently high, there exist closed timelike curves (CTC's) in the spacetime. Here we show that if there are CTC's in such a solution, then every t=const hypersurface in the spacetime intersects CTC's. Therefore, these solutions do not contradict the chronology protection conjecture of Hawking.

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