User alanf

68 votes

Does quantum mechanics play a role in the brain?

answered Jan 10, 2016 at 16:17

16 votes

Can light be somehow confined to create a kugelblitz?

answered Aug 12 at 8:43

15 votes

What is the Reduced Density Matrix?

answered Mar 21, 2014 at 10:38

14 votes

Accepted

Why do particles tend to collapse to energy-eigenstates (rather than some other basis)?

answered May 15 at 11:05

12 votes

Is many-worlds interpretation only a philosophical matter?

answered Feb 13, 2019 at 10:23

10 votes

How do we know that gravity is spacetime and not a field on spacetime?

answered Feb 21, 2017 at 9:18

10 votes

What does it mean "not to have a definite trajectory"?

answered Feb 17, 2016 at 12:04

10 votes

What would one use a theory of quantum gravity for?

answered May 13 at 14:26

10 votes

What happens to branching in the Many-Worlds Interpretation of quantum mechanics in the limit when Planck's constant goes to 0?

answered Mar 18 at 9:46

9 votes

Accepted

Testability of consciousness-causes-collapse interpretation

answered Dec 17, 2022 at 8:16

8 votes

Explain to a non-physicist what goes wrong when trying to quantize gravity

answered Jun 4 at 21:38

8 votes

Why are there no clear experiments describing the exact boundary between classical and quantum sizes?

answered Oct 24 at 8:28

7 votes

Can the collapse of the wave function be modelled as a quantum system on its own?

answered Sep 26, 2023 at 22:11

7 votes

Accepted

Why is Heisenberg picture used if Schrödinger picture is simpler?

answered May 7, 2014 at 15:44

7 votes

Neil deGrasse Tyson says that electrons "teleport" between energy levels?

answered Sep 9, 2014 at 9:41

6 votes

Accepted

Why is the electromagnetic four-potential $A_{\mu}$ not an observable?

answered Jun 17, 2015 at 10:18

6 votes

What is an open quantum system?

answered Dec 17, 2016 at 12:52

6 votes

Is energy only conserved statistically in quantum mechanics?

answered Jan 29 at 9:55

6 votes

Vacuum flucutuations = local entanglement between quantum fields?

answered Jul 4 at 15:25

5 votes

Self Understanding the technical concepts of Quantum Mechanics

answered Feb 20 at 11:59

5 votes

Accepted

How does Bell's theorem disprove realism?

answered Jan 19, 2023 at 9:44

5 votes

How can the universe evolve unitarily if there's no clock outside it?

answered Aug 20, 2022 at 9:59

5 votes

"FTL" Communication with Quantum Entanglement?

answered Sep 2, 2015 at 14:09

5 votes

Self Teaching QFT

answered Jan 3, 2016 at 16:25

4 votes

Is quantum entanglement functionally equivalent to a measurement?

answered Jun 24, 2015 at 11:34

4 votes

Can existing quantum computers be considered evidence for parallel universes?

answered Feb 11, 2015 at 11:27

4 votes

Accepted

Many worlds and "extreme" worlds

answered Feb 17, 2016 at 10:54

4 votes

Accepted

Wave Function Collapse Versus Decoherence

answered Dec 2, 2014 at 16:10

4 votes

About the nonlocality of QM and faster-than-light/backward-in-time machines

answered Dec 18, 2014 at 14:27

4 votes

Why is the speed of light arbitrarily the limit?

answered Jun 20, 2014 at 9:37

Stack Exchange Network

514 Answers

Does quantum mechanics play a role in the brain?

Can light be somehow confined to create a kugelblitz?

What is the Reduced Density Matrix?

Why do particles tend to collapse to energy-eigenstates (rather than some other basis)?

Is many-worlds interpretation only a philosophical matter?

How do we know that gravity is spacetime and not a field on spacetime?

What does it mean "not to have a definite trajectory"?

What would one use a theory of quantum gravity for?

What happens to branching in the Many-Worlds Interpretation of quantum mechanics in the limit when Planck's constant goes to 0?

Testability of consciousness-causes-collapse interpretation

Explain to a non-physicist what goes wrong when trying to quantize gravity

Why are there no clear experiments describing the exact boundary between classical and quantum sizes?

Can the collapse of the wave function be modelled as a quantum system on its own?

Why is Heisenberg picture used if Schrödinger picture is simpler?

Neil deGrasse Tyson says that electrons "teleport" between energy levels?

Why is the electromagnetic four-potential $A_{\mu}$ not an observable?

What is an open quantum system?

Is energy only conserved statistically in quantum mechanics?

Vacuum flucutuations = local entanglement between quantum fields?

Self Understanding the technical concepts of Quantum Mechanics

How does Bell's theorem disprove realism?

How can the universe evolve unitarily if there's no clock outside it?

"FTL" Communication with Quantum Entanglement?

Self Teaching QFT

Is quantum entanglement functionally equivalent to a measurement?

Can existing quantum computers be considered evidence for parallel universes?

Many worlds and "extreme" worlds

Wave Function Collapse Versus Decoherence

About the nonlocality of QM and faster-than-light/backward-in-time machines

Why is the speed of light arbitrarily the limit?