query: Why can a free particle not exists in a stationary state?
positive_passages.docid: 145626
positive_passages.text: Normalisation of free particle wavefunction
negative_passages.docid: 156863
negative_passages.text: Uncertainty Principle for a Totally Localized Particle
negative_passages.docid: 94615
negative_passages.text: Is the change in kinetic energy of a particle frame independent?
negative_passages.docid: 103460
negative_passages.text: Normal but not hermitian nor unitary
negative_passages.docid: 30745
negative_passages.text: Why can't photons have a mass?
negative_passages.docid: 133439
negative_passages.text: Can the weak force create a bound state?
negative_passages.docid: 2814
negative_passages.text: Energy conservation of Virtual Particles - Quantum Fluctuation?
negative_passages.docid: 28062
negative_passages.text: Something special about energy eigenstates when it comes to time evolution?
negative_passages.docid: 76637
negative_passages.text: Why aren't particles constantly "measured" by the whole universe?
negative_passages.docid: 139993
negative_passages.text: Quantum systems without a classical analogue?
negative_passages.docid: 104244
negative_passages.text: Is the Momentum Operator a Postulate?
negative_passages.docid: 153690
negative_passages.text: is there any uncertainty on the free particle with a definite momentum $\vec p$?
negative_passages.docid: 104140
negative_passages.text: Value of momentum of a particle in 1D box prepared in a particular state?
negative_passages.docid: 78786
negative_passages.text: Why does an open interval NOT have measure zero?
negative_passages.docid: 87423
negative_passages.text: Why can we treat quantum scattering problems as time-independent?
negative_passages.docid: 147874
negative_passages.text: Why does the existence of independent statements not prove consistency?
negative_passages.docid: 136184
negative_passages.text: Why we dont have "direct" velocity operator just as $p$? ( as use $p$ space not $v$? ) in quantum mechanics?