query: Where do we observe the effect of quantum-level repulsion and what is its origin?
positive_passages.docid: 21186
positive_passages.text: Why is the second order perturbative correction to the ground state energy always down?
negative_passages.docid: 28360
negative_passages.text: Why is gravity weak at the quantum level?
negative_passages.docid: 40334
negative_passages.text: Apparent violation of the law of conservation of angular momentum in the torques experienced by two interacting electric dipoles
negative_passages.docid: 7032
negative_passages.text: Explain reflection laws at the atomic level
negative_passages.docid: 135348
negative_passages.text: Is Zitterbewegung an artefact of single-particle theory?
negative_passages.docid: 17787
negative_passages.text: Photoelectric Effect, Why can't two quanta interact with an electron at the same time?
negative_passages.docid: 134172
negative_passages.text: Photons acting as carriers of both attractive and repulsive forces
negative_passages.docid: 78028
negative_passages.text: Inexact measurement and wavefunction collapse
negative_passages.docid: 82418
negative_passages.text: Why not drop $\hbar\omega/2$ from the quantum harmonic oscillator energy?
negative_passages.docid: 132263
negative_passages.text: Pauli principle for particles very far apart from each other
negative_passages.docid: 87923
negative_passages.text: Why probability of detection by performing unambiguous quantum measurement is less than random guess in mesoscopic quantum regime?
negative_passages.docid: 17427
negative_passages.text: Is Pauli-repulsion a "force" that is completely separate from the 4 fundamental forces?
negative_passages.docid: 41469
negative_passages.text: How is quantum superposition different from mixed state?
negative_passages.docid: 27346
negative_passages.text: Real QM cause of magnetic dipole moment
negative_passages.docid: 55412
negative_passages.text: Macroscopic quantum phenomena and tunneling
negative_passages.docid: 148864
negative_passages.text: The concept of Fermi level
negative_passages.docid: 73049
negative_passages.text: Quantum Zeno effect and unstable particles