referring
... as used in the Kramers–Heisenberg theory of dispersion.41,42 It took Born only a few days to show that Heisenberg’s quantum condition, Eq. 共16兲, was the diagonal matrix element of Eq. 共11兲, and to guess43 that the off-diagonal elements of x̂p̂⫺p̂x̂ were zero, a result that was shown to be compatible ...
... as used in the Kramers–Heisenberg theory of dispersion.41,42 It took Born only a few days to show that Heisenberg’s quantum condition, Eq. 共16兲, was the diagonal matrix element of Eq. 共11兲, and to guess43 that the off-diagonal elements of x̂p̂⫺p̂x̂ were zero, a result that was shown to be compatible ...
Time-dependent density equation and perturbation th
... matrix is N -representable. Among others, the simplest equation is the second-order density equation (Eq. 19) with n 2. Here, the density equation is de®ned using W explicitly, but our purpose is to solve the density equation not in the W-space but for the set of the density matrices. For this pur ...
... matrix is N -representable. Among others, the simplest equation is the second-order density equation (Eq. 19) with n 2. Here, the density equation is de®ned using W explicitly, but our purpose is to solve the density equation not in the W-space but for the set of the density matrices. For this pur ...
GaAs quantum structures: Comparison between direct
... The band-edge energies at the zone center of the twodimensional Brillouin zone, calculated with the SBTC approximation and with the direct pseudopotential approach, are compared in Fig. 3~a! as a function of the film thickness L ~note that in the ^ 110& directions 1 GaAs ML . 2.0 Å!. In the ‘‘exact’ ...
... The band-edge energies at the zone center of the twodimensional Brillouin zone, calculated with the SBTC approximation and with the direct pseudopotential approach, are compared in Fig. 3~a! as a function of the film thickness L ~note that in the ^ 110& directions 1 GaAs ML . 2.0 Å!. In the ‘‘exact’ ...
PHYS571: Lecture Notes Modern Atomic Physics
... insignificant for the reservoir, but with cumulative phase memory over the modes and in this way the atom produces a finite back reaction on itself that has a damping effect on its diagonal (population) and offdiagonal (coherence) atomic dynamics. For example, spontaneous emission of an excited atom ...
... insignificant for the reservoir, but with cumulative phase memory over the modes and in this way the atom produces a finite back reaction on itself that has a damping effect on its diagonal (population) and offdiagonal (coherence) atomic dynamics. For example, spontaneous emission of an excited atom ...
An Introduction to Density Functional Theory
... available which are more or less appropriate for any particular study. Ultimately such judgments must be made in terms of results (i.e.: the direct comparison with more accurate theory or experimental data, which will be discussed below) but knowledge of the derivation and structure of functionals i ...
... available which are more or less appropriate for any particular study. Ultimately such judgments must be made in terms of results (i.e.: the direct comparison with more accurate theory or experimental data, which will be discussed below) but knowledge of the derivation and structure of functionals i ...
Single Band Effective Mass Equation and Envolvent
... Abstract The single-band effective mass Schrödinger equation to calculate the envelope functions is described and its grounds are shown. These envelope functions are used to multiply periodic part of the Bloch functions to obtain approximate eigenfunctions of the Hamiltonian of a nanostructured semi ...
... Abstract The single-band effective mass Schrödinger equation to calculate the envelope functions is described and its grounds are shown. These envelope functions are used to multiply periodic part of the Bloch functions to obtain approximate eigenfunctions of the Hamiltonian of a nanostructured semi ...
Kondo-model for quantum-dots with spin
... to the outside world by coupling to two metal leads labeled by index α = L, R for left and right. The leads have voltages VL and VR and are assumed to be described by non-interacting electrons. By applying a bias-voltage across the device, it is possible to controle the amount of current running thr ...
... to the outside world by coupling to two metal leads labeled by index α = L, R for left and right. The leads have voltages VL and VR and are assumed to be described by non-interacting electrons. By applying a bias-voltage across the device, it is possible to controle the amount of current running thr ...
The path integral representation kernel of evolution operator in
... generalization of this model is the Merton-Garman model, where there was suggested [6, 7, 9] a suitable dynamics equation of the option price. Just like the Schrodinger equation, the MertonGarman equation is of evolution type. Hence, the path integral method is well fit for presenting the correspond ...
... generalization of this model is the Merton-Garman model, where there was suggested [6, 7, 9] a suitable dynamics equation of the option price. Just like the Schrodinger equation, the MertonGarman equation is of evolution type. Hence, the path integral method is well fit for presenting the correspond ...
Stability of quantum-dot excited-state laser - diss.fu
... varied from 1230 nm to 1290 nm, while keeping the averaged power constant at 3 mW. In all cases, we observe a drop in the ES laser output intensity after the depletion pulse, with the steepest slope and maximal relative reduction for a wavelength of 1260 nm. A similar spectral dependence of the resp ...
... varied from 1230 nm to 1290 nm, while keeping the averaged power constant at 3 mW. In all cases, we observe a drop in the ES laser output intensity after the depletion pulse, with the steepest slope and maximal relative reduction for a wavelength of 1260 nm. A similar spectral dependence of the resp ...
Formal Theory of Green Functions
... which describes one-particle (or one-hole) propagations in a medium. To describe two or more particle propagations, we would necessitate the twoor many-particle Green function which will be defined in the next section. In interacting systems the Green functions obey the very complicated equations, i ...
... which describes one-particle (or one-hole) propagations in a medium. To describe two or more particle propagations, we would necessitate the twoor many-particle Green function which will be defined in the next section. In interacting systems the Green functions obey the very complicated equations, i ...