Dimension and dimensional reduction in quantum gravity
Abstract
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.
- Publication:
-
Classical and Quantum Gravity
- Pub Date:
- October 2017
- DOI:
- 10.1088/1361-6382/aa8535
- arXiv:
- arXiv:1705.05417
- Bibcode:
- 2017CQGra..34s3001C
- Keywords:
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- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 33 page draft of solicited review article -- comments and added references welcome