All Questions
Tagged with quantum-interpretationswavefunction-collapse
82 questions
5votes
5answers
1kviews
Is the "wavefunction collapse" interpretation consistent with relativity?
This can be viewed as a follow up to this/this questions about an apparent inconsistency between the notion of wavefunction collapse and relativity. The setup is simple: two entangled systems are ...
- 2,255
-2votes
1answer
103views
How would you derive the Copenhagen interpretation rules from the many-worlds theory?
I have a real problem with understanding this one. Suppose you are taught in some school, without access to experiments, just theory, the many-worlds interpretation of physics. So that's all you have, ...
4votes
4answers
443views
Solution to the measurement problem - explanation
Has the measurement problem been resolved? Could someone explain the current state-of-the-art understanding of why deterministic evolution results in a random measurement outcome? Is there a model ...
- 71
14votes
3answers
3kviews
Why are there no clear experiments describing the exact boundary between classical and quantum sizes?
Why are there no clear experiments describing the exact boundary between classical and quantum sizes? Assuming we believe in interpretations of quantum mechanics (QM) that state during measurement (...
- 1,126
2votes
3answers
160views
What mathematical results support the idea that the wavefunction does not evolve unitarily before the experimenter interacts with the system?
Some interpretations of quantum mechanics support the conclusion that, from the perspective of an experimenter, the state of the universe evolves unitarily until the experimenter observes the outcome. ...
- 6,847
1vote
2answers
97views
Are the wave-functions in surrounding objects collapsed?
Can we say that the wave functions in a cup of tea, a blanket, a stool, and other surrounding objects, are collapsed due to the constant interaction of these objects with photons and other radiation?
-1votes
2answers
142views
What does the Copenhagen Interpretation say about after a collapse?
Very simple question, and I think it doesn't have an answer since CI is inherently incomplete. But when a particle is collapsed after being measured, what happens then? Does it remain a particle ...
- 119
-2votes
1answer
90views
Quantum collapse: our invention? [closed]
I'm wondering if a similar scenario has already been proposed, or if this one is somehow valid. I'm a complete layman so be patient.My reasoning goes like this: is the collapse of the wave function a ...
2votes
1answer
119views
Relationship of the do-operator in do calculus and the notion of the collapse of wave a function
I stumbled over the "do calculus" in causal modeling https://arxiv.org/abs/1210.4852 and the do-operator which is defined in this post https://stats.stackexchange.com/a/643333/298651 The do-...
-4votes
2answers
128views
Does a quantum measurement change the state in the past? [closed]
Consider the following very basic quantum mechanics experiment. At time $t_0$, a system $S$ is in superposition of two orthogonal states $|A\rangle$ and $|B\rangle$, which we could describe by $\frac{...
- 1,609
0votes
4answers
630views
Copenhagen Interpretation vs Quantum Decoherence? [closed]
I'm learning about Quantum Mechanics, and have a question about the Copenhagen Interpretation. It states that the act of observation collapses the wave function. It seems many people take this to ...
1vote
1answer
112views
The many-worlds interpretation and a free particle
How does the many-worlds interpretation understand the time evolution and spread of a free particle wave function? That is, does every continuously small change constitute a cosmic action that causes ...
- 733
2votes
3answers
308views
Is the measurement problem an interpretation or practical problem?
According to Wikipedia: In quantum mechanics, the measurement problem is the problem of how, or whether, wave function collapse occurs. Is the measurement problem an interpretation problem or a ...
- 1,609
3votes
3answers
935views
Can gravity cause a wave function to collapse?
Assume the Copenhagen interpretation. Suppose that a particle, for example an electron, has a wavefunction. If a heavy object, like the Earth, is close by, then that object interacts with the electron ...
- 1,609
1vote
1answer
172views
Who caused first collapse of wave function?
With my wife we discuss a quantum theory and wonder whether a wave function could collapse without an observer - meaning a human/or any other living beings. If so we could make a conclusion that there ...
