Extended time-travelling objects in Misner space
Feb, 2011Citations per year
Abstract: (arXiv)
Misner space is a two-dimensional (2D) locally-flat spacetime which elegantly demonstrates the emergence of closed timelike curves from causally well-behaved initial conditions. Here we explore the motion of rigid extended objects in this time-machine spacetime. This kind of 2D time-travel is found to be risky due to inevitable self-collisions (i.e. collisions of the object with itself). However, in a straightforward four-dimensional generalization of Misner space (a physically more relevant spacetime obviously), we find a wide range of 'safe' time-travel orbits free of any self-collisions.Note:
- accepted for publication in Physical Review D
- 04.20.Gz
- causality: violation
- dimension: 4
- dimension: 2
- space-time: Misner
- time machine
- dimension: 3
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