Spontaneous Dimensional Reduction? [PDF]
S. CarlipOver the past few years, evidence has begun to accumulate suggesting that spacetime may undergo a "spontaneous dimensional reduction" to two dimensions near the Planck scale. I review some of this evidence, and discuss the (still very speculative) proposal that the underlying mechanism may be related to short-distance focusing of light rays by quantum fluctuations.View original: http://arxiv.org/abs/1207.4503
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