Information om | Engelska ordet SEMICLASSICAL

Exempel på hur man kan använda SEMICLASSICAL i en mening

• They arise in semiclassical mechanics in the study of metal and semiconductor devices, in which case being derived from the Boltzmann transport equation combined with Wigner quasiprobability distribution.
• Initial attempts to apply semiclassical gravity to the traversable wormhole time machine indicated that at exactly the moment that wormhole would first allow for closed timelike curves, quantum vacuum fluctuations build up and drive the energy density to infinity in the region of the wormholes.
• It is typically used for a semiclassical calculation in quantum mechanics in which the wavefunction is recast as an exponential function, semiclassically expanded, and then either the amplitude or the phase is taken to be changing slowly.
• At a diagrammatic level, semiclassical gravity corresponds to summing all Feynman diagrams that do not have loops of gravitons (but have an arbitrary number of matter loops).
• Crystal momentum also plays a seminal role in the semiclassical model of electron dynamics, where it follows from the acceleration theorem that it obeys the equations of motion (in cgs units):.
• This section presents a relatively simple and quantitative description of the spin–orbit interaction for an electron bound to a hydrogen-like atom, up to first order in perturbation theory, using some semiclassical electrodynamics and non-relativistic quantum mechanics.
• The Landauer–Büttiker formalism holds as long as the carriers are coherent (which means the length of the active channel is less than the phase-breaking mean free path) and the transmission functions can be calculated from Schrödinger's equation or approximated by semiclassical approximations, like the WKB approximation.
• Heller has also made contributions to methodology, suggesting the technique called "frozen Gaussians"—today the most widely used semiclassical initial value representation (IVR) method of wavepacket propagation.
• She was also awarded Fellowship by HRD Ministry of Art and Culture on the topic "MAAND" (a semiclassical style of singing of Rajasthan)-"Kathak Nritya Mein Abhinaya Ka Ek Sashakt Madhyam" that fulfills the much needed requirement of "Thumri" of Jaipur Gharana.
• The accuracy of semiclassical models are compared based on the BTE by investigating how they treat the classical velocity overshoot problem, a key short channel effect (SCE) in transistor structures.
• Specific research areas include the fundamental physics of fracture and frictional motion, elasticity of growing objects, theory of large fluctuations in systems far from equilibrium, theory and applications of autoresonance, nonequilibrium statistical physics of ultrashort laser pulse formation, and semiclassical wave packet theory of cavity/circuit quantum electrodynamics and cold atom physics.
• In 1971, Martin Gutzwiller took into account that this method only works for integrable systems and derived a semiclassical way of quantizing chaotic systems from path integrals.
• Magner, extended Gutzwiller's semiclassical theory of shell structure (Gutzwiller trace formula) to a quasiclassical theory of the nuclear shell structure (1977).
• His research deals with analytic singularities of Feynman integrals, Landau singularities in S-matrix theory, singularities of systems of plane algebraic curves, microlocal analysis, function theory of several complex variables, semiclassical approximations in quantum mechanics, and Sato's hyperfunctions.

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