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Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms. [1] [2]: 183–184 Spin is quantized, and accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory.
In condensed matter physics, an AKLT model, also known as an Affleck-Kennedy-Lieb-Tasaki model is an extension of the one-dimensional quantum Heisenberg spin model.The proposal and exact solution of this model by Ian Affleck, Elliott H. Lieb, Tom Kennedy and Hal Tasaki [] [1] provided crucial insight into the physics of the spin-1 Heisenberg chain.
One example of Rabi flopping is the spin flipping within a quantum system containing a spin-1/2 particle and an oscillating magnetic field. We split the magnetic field into a constant 'environment' field, and the oscillating part, so that our field looks like = + = + ( + ()) where and are the strengths of the environment and the oscillating fields respectively, and is the frequency at ...
An adiabatic quantum motor is a mechanical device, typically nanometric, driven by a flux of quantum particles and able to perform cyclic motions. The adjective “adiabatic” in this context refers to the limit when the dynamics of the mechanical degrees of freedom is slow compared with the dwell time of the particles passing through the device.
Parts of a spinning reel: 1: Pick up or bail 2: Reel seat 3: Reel foot 4: Handle 5: Support arm 6: Anti-reverse lever 7: Skirted spool 8: Fishing line 9: Drag adjustment knob A fishing reel is a hand- cranked reel used in angling to wind and stow fishing line , [ 1 ] typically mounted onto a fishing rod , but may also be used on compound bows ...
The spin 1/2 Heisenberg model in one dimension may be solved exactly using the Bethe ansatz. [1] In the algebraic formulation, these are related to particular quantum affine algebras and elliptic quantum groups in the XXZ and XYZ cases respectively. [2] Other approaches do so without Bethe ansatz. [3]