query: Why can we not observe Faddeev-Popov ghost fields?
positive_passages.docid: 145259
positive_passages.text: Why Faddeev-Popov ghost cannot exist in external line?
negative_passages.docid: 88637
negative_passages.text: Why can a particle decay into two photons but not one?
negative_passages.docid: 142999
negative_passages.text: Why does observation collapse the wave function?
negative_passages.docid: 55412
negative_passages.text: Macroscopic quantum phenomena and tunneling
negative_passages.docid: 82894
negative_passages.text: Why cannot fermions have non-zero vacuum expectation value?
negative_passages.docid: 133542
negative_passages.text: Why can't an electric field line suddenly break?
negative_passages.docid: 35694
negative_passages.text: Can virtual particles be thought of as off-shell Fourier components of a field?
negative_passages.docid: 157091
negative_passages.text: Photons in coulomb field
negative_passages.docid: 105194
negative_passages.text: Quantum properties of objects with zero velocity
negative_passages.docid: 41889
negative_passages.text: Why is the $S_{z} =0$ state forbidden for photons?
negative_passages.docid: 25641
negative_passages.text: Is there a direct physical interpretation for the complex wavefunction?
negative_passages.docid: 156879
negative_passages.text: "Reality" of EM waves vs. wavefunction of individual photons - why not treat the wave function as equally "Real"?
negative_passages.docid: 71626
negative_passages.text: Superposition of distinct vevs in spontaneous symmetry breaking
negative_passages.docid: 21718
negative_passages.text: Are only Force Sensitives able to see Force Ghosts?
negative_passages.docid: 73049
negative_passages.text: Quantum Zeno effect and unstable particles
negative_passages.docid: 661
negative_passages.text: Basic quantum mechanics- violation of the time-energy uncertainty principle by pure eigenstates of the infinite potential well?
negative_passages.docid: 56776
negative_passages.text: How close does a particle-antiparticle pair need to be for annihilation to happen?