Sabine Hossenfelder
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
Everything they publish, on ppll ↗
Sabine Hossenfelder did not write this page.
We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.
-
Their wordsThe Copenhagen Model-and because of that, the Copenhagen Interpretation-is not locally causal in Bell's sense.
↗Quantum Confusions, Cleared Up (or so I hope)arxiv.org 1st of 4 in this piece
-
Their wordsSince Local Causality is a property of a model, observing violations of Bell's inequality cannot tell us anything about nature itself, but merely about the properties of the model that we use to describe nature.
↗Quantum Confusions, Cleared Up (or so I hope)arxiv.org 2nd of 4 in this piece
-
Their wordswhile decoherence has the potential to solve this aspect of the measurement problem, it hasn't yet been satisfactorily done. Decoherence also certainly does not return us to Local Causality.
↗Quantum Confusions, Cleared Up (or so I hope)arxiv.org 3rd of 4 in this piece
-
Our reading
The collapse postulate cannot simply be discarded without replacement instructions for measurements.
Their wordsAs we just saw, one cannot just discard the Collapse Postulate. For this reason, if one does calculations in any Many Worlds approach, one must effectively replace the Collapse Postulate by other assumptions, notably about what happens to observers and/or measurement devices when worlds branch.
↗Quantum Confusions, Cleared Up (or so I hope)arxiv.org 4th of 4 in this piece