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Quantum Boomerang Effect
The quantum boomerang effect is a quantum mechanics, quantum mechanical phenomenon whereby Wave packet, wavepackets launched through Randomness, disordered media return, on average, to their starting points, as a consequence of Anderson localization and the inherent symmetries of the system. At early times, the initial Parity (physics), parity asymmetry of the nonzero momentum leads to asymmetric behavior: nonzero Displacement (geometry), displacement of the wavepackets from their origin. At long times, inherent T-symmetry, time-reversal symmetry and the confining effects of Anderson localization lead to correspondingly symmetric behavior: both zero final velocity and zero final displacement. History In 1958, Philip W. Anderson introduced the Anderson localization, eponymous model of disordered Bravais lattice, lattices which exhibits localization, the confinement of the electrons' probability distributions within some small volume. In other words, if a wavepacket were dropped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Mechanics
Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science. Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary (macroscopic) scale, but is not sufficient for describing them at small (atomic and subatomic) scales. Most theories in classical physics can be derived from quantum mechanics as an approximation valid at large (macroscopic) scale. Quantum mechanics differs from classical physics in that energy, momentum, angular momentum, and other quantities of a bound system are restricted to discrete values ( quantization); objects have characteristics of both particles and waves (wave–particle duality); and there are limits to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
