On Monday, September 23, 2019 at 4:44:49 PM UTC-5, Brent wrote: > > > > On 9/23/2019 11:59 AM, Philip Thrift wrote: > > *But other quantum experts use decoherence to explain quantum phenomena > without invoking multiple universes.* > > > "Without invoking" doesn't mean "denying". If you're only interested in > saving the phenomenon you can explain the *apparent* collapse by > decoherence and not say anything about the other results that were > predicted. Chris Fuchs explains quantum phenomenon without either collapse > or multiple universes. > > Brent >
This is better? https://www.wired.com/2015/06/private-view-quantum-reality/ Quantum Bayesianism, or QBism as Fuchs now calls it, solves many of quantum theory’s deepest mysteries. Take, for instance, the infamous “collapse of the wave function,” wherein the quantum system inexplicably transitions from multiple simultaneous states to a single actuality. According to QBism, *the wave function’s “collapse” is simply the observer updating his or her beliefs after making a measurement. *Spooky action at a distance, wherein one observer’s measurement of a particle right here collapses the wave function of a particle way over there, turns out not to be so spooky—the measurement here simply provides information that the observer can use to bet on the state of the distant particle, should she come into contact with it. But how, we might ask, does her measurement here affect the outcome of a measurement a second observer will make over there? In fact, it doesn’t. *Since the wavefunction doesn’t belong to the system itself, each observer has her own. *My wavefunction doesn’t have to align with yours. @philipthrift -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/ccfc2289-39d8-4ceb-86d6-492253f4c7f8%40googlegroups.com.
