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Quantumwhisp

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earned this badge 7 times.

Is the vacuum state a coherent state?

Awarded May 10, 2022 at 21:01

Can we always express the EM-Field Hamiltonian as (possibly time dependent) pair of annihilation and creation operators?

Awarded Aug 29, 2021 at 13:17

Must observables be Hermitian only because we want real eigenvalues, or is more to that?

Awarded Apr 24, 2021 at 17:21

Justification of the Least Action Principle using conservation of information

Awarded Dec 6, 2019 at 8:30

Does an Operator that neither commutes with $\hat{X}$ or $\hat{P}$, nor can be expressed as a "function" of $\hat{X}$ and $\hat{P}$ make sense?

Awarded Oct 8, 2019 at 9:00

Is the usage of the Fock space a postulate in QFT?

Awarded Mar 12, 2019 at 16:55

Is a canonical transformation equivalent to a transformation that preserves volume and orientation?

Awarded Feb 20, 2019 at 10:50

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