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After last week’s imaginative speculation, I’d better tell you something concrete. How about the solution to quantum gravity that has been eluding us for some 90 years? Here it is … er … with one minor catch. We’ll have to suppose that spacetime is 3 dimensional, i.e. one time and only two space directions rather […]
Read MoreSo far in these posts we have looked at testable quantum gravity effects, but I have not said much about the ultimate theory of quantum gravity itself. There is a simple reason: I do not think we have a compelling theory yet. Rather, I think that this deepest and most long-standing of all problems in […]
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First off, newly syndicated readers who want to have access to my previous posts can find them archived here as well as listed on my own site here. After last week’s speculations on time I would like to ask an even deeper question: why is there time? My 4 year old daughter would be proud. […]
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If the real world, at its base, is quantum, then should we not think with quantum logic? Shahn Majid discusses how the notion of quantum symmetry coming out of modern ideas on space and time could provide clues to the workings of a truly quantum computer. Have you ever sat through a really boring flow […]
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