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Effect of an industrial chemical waste on the uptake
Effect of an industrial chemical waste on the uptake

... will be in the range 700–4000 cm–1. The contribution of excited electronic states to the total partition function is neglected. The stretching vibrational wave numbers for molecules such as BC2, being the subject of our next paper, are around 103 cm–1, whereas the bending wave numbers have values of ...
py354-final-121502
py354-final-121502

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Monday, Apr. 14, 2014

Quantum Mechanics: Schrödinger vs Heisenberg
Quantum Mechanics: Schrödinger vs Heisenberg

Direct Pseudopotential Calculation of Exciton Coulomb and
Direct Pseudopotential Calculation of Exciton Coulomb and

... PHYSICAL REVIEW LETTERS ...
Helium atom in metallic electron gases: A comparative study
Helium atom in metallic electron gases: A comparative study

On the energy of homogeneous cosmologies
On the energy of homogeneous cosmologies

Supercurrent through a multilevel quantum dot - FU Berlin
Supercurrent through a multilevel quantum dot - FU Berlin

density functional theory
density functional theory

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Quantum Field Theory

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Contents

Unitary time evolution
Unitary time evolution

Lecture 4 Density instead of the wavefunction CHEM6085: Density
Lecture 4 Density instead of the wavefunction CHEM6085: Density

PDF 1
PDF 1

... A particular application of Schröndinger equation is in solving the problem of tunneling, which has no classical analogue. A one dimensional representation of the system is shown in figure 3. An electron with energy E is incident, from the left, on a potential barrier of height V0 and width a (E < ...
Hamiltonian identification for quantum systems
Hamiltonian identification for quantum systems

... The notion of wavefunction controllability of a quantum system, used in Assumption (A1), has been introduced in [23], and a criterion of controllability involving the Lie algebra spanned by iH and iµ is given therein. Under an adequate assumption, this notion of controllability implies the existence ...
appendix A
appendix A

... energy ΔΕ may depend on time. We assume that the dependence of ΔΕ on t is essential only at small t if the time t=0 is considered as a beginning of the action of ΔΗ(t). But at large t the ψper may become a stationary wave function, so the energy Εper in (4) ceases to be dependent on time leading to ...
Phase-Coherent Transport through a Mesoscopic System: A New Probe V 80, N
Phase-Coherent Transport through a Mesoscopic System: A New Probe V 80, N

The Hydrogen Atom: a Review on the Birth of Modern Quantum
The Hydrogen Atom: a Review on the Birth of Modern Quantum

Multiphoton antiresonance M. I. Dykman and M. V. Fistul
Multiphoton antiresonance M. I. Dykman and M. V. Fistul

Comparison higher order modified effective-range theory for elastic scattering angular differential cross-sections e-Ar
Comparison higher order modified effective-range theory for elastic scattering angular differential cross-sections e-Ar

... symmetric, spin independent, and local. We turn away from successive generalizations in the form of the potential and consider the simplification which results when the energy is sufficiently low. The knowledge of the phase-shifts enables one to obtain the scattering amplitude. In this case we show ...
A New Approach to the ⋆-Genvalue Equation
A New Approach to the ⋆-Genvalue Equation

Spontaneous symmetry breaking in quantum
Spontaneous symmetry breaking in quantum

... eigenstates of the Hamiltonian are spread out with equal amplitude over all of space. It could be argued that because a chair is built of many microscopic particles that all obey the rules of quantum mechanics, the chair as a whole should also respect the symmetry of its Hamiltonian and be spread ou ...
Uncertainty Principle Tutorial part II
Uncertainty Principle Tutorial part II

Lecture notes, Chapter 4. Energy Levels
Lecture notes, Chapter 4. Energy Levels

THE QUANTUM BEATING AND ITS NUMERICAL SIMULATION
THE QUANTUM BEATING AND ITS NUMERICAL SIMULATION

... measuring the strength of the symmetry breaking non-linear term, above which the beating period goes to infinity meaning that the beating phenomenon is suppressed. In this paper we present a different model of a similar physical situation. We consider a hamiltonian with two concentrated non-linear a ...
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Perturbation theory (quantum mechanics)

In quantum mechanics, perturbation theory is a set of approximation schemes directly related to mathematical perturbation for describing a complicated quantum system in terms of a simpler one. The idea is to start with a simple system for which a mathematical solution is known, and add an additional ""perturbing"" Hamiltonian representing a weak disturbance to the system. If the disturbance is not too large, the various physical quantities associated with the perturbed system (e.g. its energy levels and eigenstates) can be expressed as ""corrections"" to those of the simple system. These corrections, being small compared to the size of the quantities themselves, can be calculated using approximate methods such as asymptotic series. The complicated system can therefore be studied based on knowledge of the simpler one.
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