The two-dimensional hydrogen atom revisited
... A semiconductor quantum well under illumination is a quasi-two-dimensional system, in which photoexcited electrons and holes are essentially confined to a plane. The mutual Coulomb interaction leads to electron–hole bound states known as excitons, which are extremely important for the optical proper ...
... A semiconductor quantum well under illumination is a quasi-two-dimensional system, in which photoexcited electrons and holes are essentially confined to a plane. The mutual Coulomb interaction leads to electron–hole bound states known as excitons, which are extremely important for the optical proper ...
Finite Element Approach of Electronic Structures THÈSE
... methods and tools increased dramatically, and representative electronic calculations can now be achieved [Ced10]. ...
... methods and tools increased dramatically, and representative electronic calculations can now be achieved [Ced10]. ...
Gravity Duals for Nonrelativistic Conformal Field
... In this Letter, we set out to find a bulk dual of nonrelativistic CFTs, analogous to the AdS gravity description of relativistic CFTs, at strong coupling. We approach this question by considering the algebra of generators of the nonrelativistic conformal group, which appears in Ref. [5] (related wor ...
... In this Letter, we set out to find a bulk dual of nonrelativistic CFTs, analogous to the AdS gravity description of relativistic CFTs, at strong coupling. We approach this question by considering the algebra of generators of the nonrelativistic conformal group, which appears in Ref. [5] (related wor ...
A parametric study of the numerical simulations of triggered VLF
... where γ (|R|)R represents the nonlinear unducting loss which increases sharply above the saturation level Rmax . We may now define two useful quantities, JR (z,t) the component of resonant particle current parallel with the local wave electric field, and JI (z,t) the component parallel with the loca ...
... where γ (|R|)R represents the nonlinear unducting loss which increases sharply above the saturation level Rmax . We may now define two useful quantities, JR (z,t) the component of resonant particle current parallel with the local wave electric field, and JI (z,t) the component parallel with the loca ...
Conceptual Physics
... 21. If an object is in free fall, its _____________________ is constant. 22. What is the value for the acceleration due to gravity? 23. If a ball is thrown up at 10 m/s, what will be the speed of the ball when it’s caught back at the original point of the throw? 24. If you throw a ball straight up, ...
... 21. If an object is in free fall, its _____________________ is constant. 22. What is the value for the acceleration due to gravity? 23. If a ball is thrown up at 10 m/s, what will be the speed of the ball when it’s caught back at the original point of the throw? 24. If you throw a ball straight up, ...
energetic particle diffusion in critically balanced
... than values of the correlation function, Cxx . The correlation contours for the GS95 model are ellipses (appearing rectangular in the log–log presentation of Figure 3), with the aspect ratio increasing at smaller scales. A similar trend cannot be seen in the composite model. To quantify the scale de ...
... than values of the correlation function, Cxx . The correlation contours for the GS95 model are ellipses (appearing rectangular in the log–log presentation of Figure 3), with the aspect ratio increasing at smaller scales. A similar trend cannot be seen in the composite model. To quantify the scale de ...
KINETIC EQUATION FOR SOLITONS illjl = -4 (.!._)` ljJ -~( u
... (21) and do not have the property of conserving the total distribution function. The discrepancy is due to the fact that an incorrect approximation was used in [ 1 1.1 2 ] for the solution of the KDV equation. In the cited papers, the solution was approximated by a linear superposition of solitons [ ...
... (21) and do not have the property of conserving the total distribution function. The discrepancy is due to the fact that an incorrect approximation was used in [ 1 1.1 2 ] for the solution of the KDV equation. In the cited papers, the solution was approximated by a linear superposition of solitons [ ...
Wave packet
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In physics, a wave packet (or wave train) is a short ""burst"" or ""envelope"" of localized wave action that travels as a unit. A wave packet can be analyzed into, or can be synthesized from, an infinite set of component sinusoidal waves of different wavenumbers, with phases and amplitudes such that they interfere constructively only over a small region of space, and destructively elsewhere. Each component wave function, and hence the wave packet, are solutions of a wave equation. Depending on the wave equation, the wave packet's profile may remain constant (no dispersion, see figure) or it may change (dispersion) while propagating.Quantum mechanics ascribes a special significance to the wave packet; it is interpreted as a probability amplitude, its norm squared describing the probability density that a particle or particles in a particular state will be measured to have a given position or momentum. The wave equation is in this case the Schrödinger equation. It is possible to deduce the time evolution of a quantum mechanical system, similar to the process of the Hamiltonian formalism in classical mechanics. The dispersive character of solutions of the Schrödinger equation has played an important role in rejecting Schrödinger's original interpretation, and accepting the Born rule.In the coordinate representation of the wave (such as the Cartesian coordinate system), the position of the physical object's localized probability is specified by the position of the packet solution. Moreover, the narrower the spatial wave packet, and therefore the better localized the position of the wave packet, the larger the spread in the momentum of the wave. This trade-off between spread in position and spread in momentum is a characteristic feature of the Heisenberg uncertainty principle,and will be illustrated below.