Questions tagged [wavefunction-collapse]

Question 1

The equations of classical physics are time reversible -- unchanged when $t$ is replaced by $-t$. The Schrodinger equation in quantum mechanics is time reversible -- unchanged when $t$ is replaced by ...

Question 2

When we measure the position of a particle,it collapses to a new wavefunction which is a dirac delta function.It's probability density spikes at a particular position value.So when we measure its ...

Question 3

Is it really the act of conscious observation that collapses the wave function, or could it be the presence of additional measurement apparatus eliminates the interference pattern independent of a ...

Question 4

In a beam splitter experiment with a single photon, if I place a detector on one path and after some time it never clicks, why does the wavefunction still collapse to the other path even though I ...

Question 5

One of the postulates of quantum mechanics, introduced by Dirac, says that immediately after a measurement of an observable $\hat A$ the wavefunction abruptly becomes an eigenfunction of $\hat A$. In ...

Question 6

I did my PhD research on device physics of optoelectronic devices. We take the square of $\langle f| H_{int} |i\rangle $ as the photon absorption probability or the theoretical efficiency of a ...

Question 7

I believe Landau is trying to motivate the collapse of a wavefunction. However, there are some parts which are confusing. He claims that the apparatus is in an initial state $\Phi_0(\xi)$ while the ...

Question 8

The collapse of the wavefunction by comparing it with the Schrodinger equations has some differences: it is higly non-linear while the Schrodinger equation is linear, it is non-local as proven by Bell'...

Question 9

As far as I understand as a layman (and forgive me if I say anything wrong, I am merely stating my current understanding), quantum mechanics predicts outcomes based on a wave function, which is a ...

Question 10

I was introduced to the objective wavefunction collapse by dr.Sean Caroll. He explains that objective wavefunction collapse theories say that after some finite time the wavefunction of a electron ...

Question 11

In quantum mechanics it is said that a measurement collapses the wave function while perturbation changes the hamiltonian but how a system knows if my interaction with it is just a perturbation or a ...

Question 12

When we measure the position of an object its wavefunction collapses to infinity at a particular point. So if we continuously measure the position of the object it will give same value continuously. ...

Question 13

I have a pretty solid understanding of ordinary quantum mechanics, but I’m hitting a conceptual block about quantum field theory. My understanding is that we are creating a wavefunction of possible ...

Question 14

In this review article on objective collapse theories, which is also linked from this Phys.SE post, at least in the part I've read so far, a deal of fuss seems to be made about the fact that we don't ...

Question 15

Lets say there are two entangled Qubits A, B, very far away from each other and described by the state $|\Psi\rangle = |++\rangle + |--\rangle$ In a reference system S, A measures + and one hour ...

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Questions tagged [wavefunction-collapse]

Irreversibility of wave function collapse [closed]

Collapse of wave function of large objects [duplicate]

Question on Wave Function Collapse in Quantum Experiments [duplicate]

Why does the wavefunction collapse after no detection?

What happen with wavefunction immediately after a measurement?

When does a transition collapse to the final state?

Wave Function and Measurement (Landau-Lifschitz Volume 3)

Is the collapse of the wavefunction really part of the quantum theory?

Doesn't the Many Worlds Interpretation simply move the collapse of the wave-function to the brain/consciousness? [closed]

Objective collapse of wavefunction energy equivalence

Quantum measurement and perturbation [duplicate]

Violation of Heisenberg uncertainty principle [duplicate]

Wavefunction collapse in QFT? [duplicate]

To what degree should macroscopic objects be in superposition of position states according to standard quantum theory?

Two measurements on entangled system: does it make sense to say that one observer collapses the state? [duplicate]

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