Examples of multiple entanglements

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Discussion Overview

The discussion revolves around the concept of multiple entanglements in quantum mechanics, specifically focusing on the entanglement of particles' spin states and the implications of observers interacting with these states. Participants explore hypothetical experimental setups and the nature of entanglement as it relates to multiple observers and outcomes.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant proposes that observing a particle's spin creates entanglements with terms like "spin up and you" and "spin down and you," suggesting a complex web of awareness and entanglement.
  • Another participant questions whether a third observer, Gerry, can entangle with both terms of the initial entanglement or only one, seeking clarification on the experimental conditions required for such entanglements.
  • Responses indicate a disagreement on whether Gerry can observe both outcomes simultaneously or only one, with some asserting that only one outcome exists in reality.
  • There is a contention regarding the implications of observing entangled states and whether observers can access outcomes from different branches of the wave function.

Areas of Agreement / Disagreement

Participants express differing views on the nature of entanglement and the outcomes available to observers, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

Participants reference previous discussions on the topic, suggesting that there are unresolved aspects regarding the interpretation of quantum mechanics and the implications of multiple observers on entangled states.

mieral
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I need actual examples of entanglements where they go on and on...

Let's start with you observing the spin up and spin down of a particle.. so you become entangled with the state of the particle..

so "spin up and you" and "spin down and you" become terms of the entanglement where only the whole system has wave functions..

Now I'd like to understand what experimental setup where you can form another entanglement with the say "spin down and you" and so on.. I'd like to understand how the terms can break away and each MWI branch forms more entanglement.. so your single initial awareness becomes billions of awareness in the never ending entanglements..
 
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Let's give more detail...

I observe spin up and spin down

"spin up and I" and "spin down and I" become the two terms of the entanglement
Let's say Gerry observes me..
would it form "spin up and I and Gerry" and "spin down and I and Gerry" in the entanglement or can Gerry only form entanglement with either one of the "spin up and I" and "spin down and I" and not both of them? What experiment situation where Gerry can form entanglement with both or either one of the terms only?
 
mieral said:
Let's say Gerry observes me..
would it form "spin up and I and Gerry" and "spin down and I and Gerry" in the entanglement

Yes.

mieral said:
or can Gerry only form entanglement with either one of the "spin up and I" and "spin down and I" and not both of them?

No.
 
PeterDonis said:
Yes.
No.

But there is only one outcome in this world.. for example, only "spin up and I" comes out.. so if Gerry observes me.. he should see me "spin up and I" only.. why should he be able to see and entangle with the "spin down and I" which is in another branch?
 
mieral said:
But there is only one outcome in this world...

We've already gone round and round about this before. I'd just be repeating the same things I've said to you in previous threads. There's no point to doing that.

Thread closed.
 

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