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- W2561789491 abstract "We answer to 72 frequently asked questions about theories of multifractional spacetimes. Apart from reviewing and reorganizing what we already know about such theories, we discuss the physical meaning and consequences of the very recent flow-equation theorem on dimensional flow in quantum gravity, in particular its enormous impact on the multifractional paradigm. We will also get new theoretical results about the construction of multifractional derivatives and the symmetries in the yet-unexplored theory T γ , the resolution of ambiguities in the calculation of the spectral dimension, the relation between the theory T q with q-derivatives and the theory T γ with fractional derivatives, the interpretation of complex dimensions in quantum gravity, the frame choice at the quantum level, the physical interpretation of the propagator in T γ as an infinite superposition of quasiparticle modes, the relation between multifractional theories and quantum gravity, and the issue of renormalization, arguing that power-counting arguments do not capture the exotic properties of extreme UV regimes of multifractional geometry, where T γ may indeed be renormalizable. A careful discussion of experimental bounds and new constraints are also presented." @default.
- W2561789491 created "2017-01-06" @default.
- W2561789491 creator A5043105038 @default.
- W2561789491 date "2017-03-01" @default.
- W2561789491 modified "2023-10-05" @default.
- W2561789491 title "Multifractional theories: an unconventional review" @default.
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