Treversal
Member
- Messages
- 408
WIKI:
The Tipler cylinder was discovered as a solution to the equations of general relativity by Willem Jacob van Stockum[1] in 1936 and Kornel Lanczos[2] in 1924, but not recognized as allowing closed timelike curves[3] until an analysis by Frank Tipler[4] in 1974. Tipler showed in his 1974 paper, "Rotating Cylinders and the Possibility of Global Causality Violation" that in a spacetime containing a massive, infinitely long cylinder which was spinning along its longitudinal axis, the cylinder should create a frame-dragging effect. This frame-dragging effect warps spacetime in such a way that the light cones of objects in the cylinder's proximity become tilted, so that part of the light cone then points backwards along the time axis on a space-time diagram. Therefore, a spacecraft accelerating sufficiently in the appropriate direction can travel backwards through time along a closed timelike curve.
The Tipler cylinder was discovered as a solution to the equations of general relativity by Willem Jacob van Stockum[1] in 1936 and Kornel Lanczos[2] in 1924, but not recognized as allowing closed timelike curves[3] until an analysis by Frank Tipler[4] in 1974. Tipler showed in his 1974 paper, "Rotating Cylinders and the Possibility of Global Causality Violation" that in a spacetime containing a massive, infinitely long cylinder which was spinning along its longitudinal axis, the cylinder should create a frame-dragging effect. This frame-dragging effect warps spacetime in such a way that the light cones of objects in the cylinder's proximity become tilted, so that part of the light cone then points backwards along the time axis on a space-time diagram. Therefore, a spacecraft accelerating sufficiently in the appropriate direction can travel backwards through time along a closed timelike curve.