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High harmonic generation by short laser pulses: time
High harmonic generation by short laser pulses: time

Applications of Resolutions of the Coulomb Operator in Quantum
Applications of Resolutions of the Coulomb Operator in Quantum

... levels, it later became known as “quantum mechanics”. The term was first used by Born in early 1920s [21]. The two most important theoretical developments to the field were the formulation of the Schrödinger equation in 1926 [13, 14] and its relativistic extension, the Dirac equation in 1928 [22]. ...
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Regularity and Approximability of Electronic Wave Functions

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... model addresses the values of the field only at a finite number of discrete sensor points inside the physical waveguide. Planar waveguides are as thin as possible but still three dimensional; all their sensor points [Eq. (1.2)] are on the x axis. We regard the Newton equations (1.6) as the fundament ...
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... 4. [10 pts] Using L± = Lx ± iLy we can use the relation L+ |ℓ, ℓi = 0 and the expressions from problem 11.1 to write a differential equation for hθφ|ℓℓi. Plug in your solution from 11.3 for the φ-dependence, and show that the solution is hθφ|ℓℓi = cℓ eiℓφ sinℓ (θ). Determine the value of the normal ...
Irreducible Tensor Operators and the Wigner
Irreducible Tensor Operators and the Wigner

... to the spherical basis; in this course, however, we will only need the expansion indicated by Eq. (30). 8. An Application of the Spherical Basis To show some of the utility of the spherical basis, we consider the problem of dipole radiative transitions in a single-electron atom such as hydrogen or a ...
Chapter 5 ANGULAR MOMENTUM AND ROTATIONS
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... ~ of an isolated system about any In classical mechanics the total angular momentum L ~ associated with such a …xed point is conserved. The existence of a conserved vector L system is itself a consequence of the fact that the associated Hamiltonian (or Lagrangian) is invariant under rotations, i.e., ...
QUANTUM MECHANICS B PHY-413 Note Set No. 7
QUANTUM MECHANICS B PHY-413 Note Set No. 7

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Quantum Mechanical Addition of Angular Momenta and Spin

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Some identities of Laguerre polynomials arising from differential

... fluid mechanics, plasma physics, dynamical processes and finance, etc. Most FDEs do not have exact solutions and hence numerical approximation techniques must be used. Spectral methods are widely used to numerically solve various types of integral and differential equations due to their high accuracy a ...
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... and Solution of the  equation is rather simple. However, solution of the  equation most definitely is NOT. Therefore, we will just present the results for the quantum numbers, energies and wavefunctions that result when the two equations are solved and boundary conditions are applied. ...
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Single-Site Green-Function of the Dirac Equation for Full

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PyProp - A Python Framework for Propagating the Time

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... So far everything is fine, except for the fact that we did not discuss what the nuclear potential is and where does it come from. This is an important point since the nuclear case is different than the atomic one. We are going to address this point at the start of the next lecture. For now let us as ...
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Lecture notes - Valeev Group

... uniform grids, with high density of points around the nuclei. An alternative approach, more intuitively obvious for chemists familiar with the concept of atomic orbitals (physicists familiar with Bloch functions), is to expand the solution in terms of functions that behave like the solution, atomic ...
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... On the other hand, computation necessities forced us to initiate this program by computing on Taylor series. This led us to the evidence that the group of substitution with prefunctions is the projective limit of a sequence of algebraic unipotent groups of “approximate substitutions” [12]. As a cons ...
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Generation Of Coherent, Femtosecond, X-ray Pulses In The

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hidden symmetry and explicit spheroidal eigenfunctions of the

... The Schrödinger equation for a hydrogenic atom is separable in prolate spheroidal coordinates, as a consequence of the “hidden symmetry” stemming from the fixed spatial orientation of the classical Kepler orbits. One focus is at the nucleus and the other a distance R away along the major axis of the ...
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... Figures 1~a! and 1~b! ~solid line! present typical spectra obtained for E 0 510 and 5, respectively. They display the characteristic behavior of high-order harmonic spectra: a steady decrease for the first orders, followed by a long plateau up to a sharp cutoff. This behavior can be explained by con ...
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... Well, maybe not quite everything. But everything that I care about is a design. The most comprehensive definition of a design is that it is a finite set which is balanced, in the sense that it satisfies some symmetries. Designs have existed in the mathematical world for hundreds of years. Many mathe ...
L z
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... Angular Momentum Operator • L is important to us because electrons are constantly changing direction (turning) when they are confined to atoms and molecules • L is a vector operator in quantum mechanics • Lx : operator for projection of L on a x-axis • Ly : operator for projection of L on a y-axis ...
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... where the system becomes effectively one-dimensional [10, 13]. Out of the critical point, the rotational properties of the model become qualitatively dependent on the sign of κ: for κ > 0 the system could have an infinite number of states with a given value of the angular momentum, while for κ < 0 t ...
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Spherical harmonics

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