Dimension and dimensional reduction in quantum gravity
- Author(s): Carlip, S
- et al.
Published Web Locationhttps://doi.org/10.1088/1361-6382/aa8535
© 2017 IOP Publishing Ltd. A number of very different approaches to quantum gravity contain a common thread, a hint that spacetime at very short distances becomes effectively two dimensional. I review this evidence, starting with a discussion of the physical meaning of 'dimension' and concluding with some speculative ideas of what dimensional reduction might mean for physics.
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