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sheaf
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I’ve been starting to look at how LQG works, and if I’ve understood it correctly, just thinking about the kinematics, the quantum state of spacetime is encoded in a spin network. If I want to determine the volume of a region of spacetime, the result will be an eigenvalue of some volume operator. For a classical picture of spacetime to emerge, where a region of spacetime has a well defined volume, isn’t it the case that spacetime must no longer be in a superposition, i.e. “measurements must have happened” ? Is there any agreed way that people heuristically think about the measurement process ?