Probabilities from Entanglement, Born's Rule from Envariance

  title={Probabilities from Entanglement, Born's Rule from Envariance},
  author={Wojciech Zurek},
I show how probabilities arise in quantum physics by exploring implications of environment assisted invariance or envariance, a recently discovered symmetry exhibited by entangled quantum systems. Envariance of perfectly entangled “Bell-like” states can be used to rigorously justify complete ignorance of the observer about the outcome of any measurement on either of the members of the entangled pair. For more general states, envariance leads to Born’s rule, pk ∝ |ψk| 2 for the outcomes… 

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