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About Time Travel and The Time Travel Paradox
If you try to construct a galaxy model or universe model where time
travel is possible without any paradoxes you have to satisfy following two axioms C1 and C2 and the definition: C1 (Locality). The laws of motion inside any region U do not depend on anything outside of U. C2. In any causal spacetime the laws of motion must be compatible with any initial data. Definition. The paradox is the inconsistency of some laws of motion satisfying conditions (C1,C2) with initial data fixed in a causal region. Reference: Krasnikov, S. 2002. The time travel paradox. arXiv:gr-qc/0109029v2 27 Mar 2002. (C1 on p. 6, C2 on p. 7 and Def. on p.10.) pages 1-17. My model of a galaxy mentioned in my Master of Thesis (Poropudas, Hannu, 2006. Geodesic Algebras. Oulu University) satisfies all of these. Best Regards, Hannu Poropudas |
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