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Quantum Quandaries---Baez' new paper
quant-ph/0404040
just out
gets down on the key QG issues
sample:
"...propose another possibility, namely that quantum theory will make more sense when regarded as part of a theory of spacetime. Furthermore, I claim that we can only see this from a category-theoretic perspective — in particular, one that de-emphasizes the primary role of the category of sets and functions.
Part of the difficulty of combining general relativity and quantum theory is that they use different..."
quant-ph/0404040
just out
gets down on the key QG issues
sample:
"...propose another possibility, namely that quantum theory will make more sense when regarded as part of a theory of spacetime. Furthermore, I claim that we can only see this from a category-theoretic perspective — in particular, one that de-emphasizes the primary role of the category of sets and functions.
Part of the difficulty of combining general relativity and quantum theory is that they use different..."