Richard Ruquist wrote:
On Mon, Nov 24, 2014 at 5:07 PM, Bruce Kellett <[email protected] <mailto:[email protected]>> wrote:Bruno Marchal wrote: On 24 Nov 2014, at 11:35, Richard Ruquist wrote: With MWI thinking, every detector will detect a photon at the same energy and frequency as the original photon but in a different world. So the total energy in the multiverse will locally have increased by the number of detectors times the photon energy. The only way to conserve energy is to detect only one photon of the same energy and frequency as the original photon. ... or the conservation of energy is something which has to be accounted in branches, not in the multiverse. I don't think so. The multiverse is described by the SWE, and that is just a unitary transformation in Hilbert space. It satisfies energy conservation by construction (time translation invariance and Noether's theorem). You have to renormalize in each branch to get the observed branch-wise energy conservation -- conservation is automatic only for the multiverse.Renormalization increases the energy of the multiverse. No conservation. No renormalization results in chaos.
Renormalizing the (collapsed) wave function for a branch does not affect the wave function of the multiverse. The procedure is ugly, but doesn't lead to difficulties.
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