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Codename 47
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5 Questions

Score Activity Newest Views
6 votes
1 answer
338 views

Does the (non-)collision of two fermion wave packets demonstrate that there is no exchange "force"?

  • quantum-mechanics
  • fermions
  • exchange-interaction
asked Jan 28, 2020 at 16:54
1 vote
0 answers
22 views

Quantum eraser: How does photon detection in an interference pattern "dark spot" not affect the state of the remaining photon? [duplicate]

  • quantum-mechanics
  • photons
  • quantum-entanglement
asked Sep 13, 2019 at 13:06
0 votes
2 answers
195 views

When can we replace the Cooper pair operator with its expectation value?

  • quantum-mechanics
  • superconductivity
  • second-quantization
asked Mar 27, 2020 at 11:18
-2 votes
2 answers
90 views

How can we figure out what fraction of pure states in a Hilbert space are entangled? [duplicate]

  • quantum-mechanics
  • hilbert-space
  • quantum-entanglement
asked Sep 18 at 13:17
-3 votes
1 answer
81 views

Applying the position operator several times to a harmonic oscillator state $\hat x^m |n\rangle =$ ______? [duplicate]

  • quantum-mechanics
  • operators
  • hilbert-space
  • harmonic-oscillator
asked May 24 at 9:55
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