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(Dynamical) quantum typicality: What is it and what are its
(Dynamical) quantum typicality: What is it and what are its

Supersymmetric quantum mechanics and new potentials
Supersymmetric quantum mechanics and new potentials

... We know that the number of Schrõdinger equations that have analytic solutions is quite small. In recent years some works have tried to increase this number, starting from potentials whose solutions are known (e.q. Abraham and Mosesl and Pursey2). Supersymmetric quantum mechanics (SQM) has also been ...
Adiabatic decoupling (2008) ocr
Adiabatic decoupling (2008) ocr

THE QUArtTIC-QUADRATIC OSCILLATOR
THE QUArtTIC-QUADRATIC OSCILLATOR

... vectors give the anharmonic energy levels and the coefficients ci respectively. It is possible, by making v use of the form of 2.102, to determine the vibrational energy levels by, first, solving the dimensionless~· Hamiltonian H ...
Complete Analytical Solutions of the Mie
Complete Analytical Solutions of the Mie

... expectation values, one can promote the fixed parameters which appears in the Hamiltonian to be a continuous variable (for the mathematical purpose of taking the derivative). Thus, suppose the Hamiltonian H for a particular quantum system is a function of some parameters q, and let En (q) and Ψn (q) ...
Imaging and Tuning Molecular Levels at the Surface of a Gated
Imaging and Tuning Molecular Levels at the Surface of a Gated

... and annihilation operators. We will neglect the dependence on electron wavevector k , as well as phonon wavevector q . This is based on the observation that the electron and phonon bandwidths are both relatively small. We have also checked that the electron-phonon matrix elements do not change appre ...
The Spectrum of the Hydrogen Atom
The Spectrum of the Hydrogen Atom

Nonlinear response of a driven vibrating nanobeam in the quantum...
Nonlinear response of a driven vibrating nanobeam in the quantum...

Complete Lecture Notes
Complete Lecture Notes

Acoustic Analog to Quantum Mechanical Level Splitting
Acoustic Analog to Quantum Mechanical Level Splitting

... A common system of interest in quantum mechanics is the infinite square well. A typical exercise in introductory quantum mechanics courses is finding the energy eigenvalues and eigenfunctions for such a system.1–3 In more advanced courses, the infinite square well is used as a starting point for per ...
How to solve Fokker-Planck equation treating mixed eigenvalue
How to solve Fokker-Planck equation treating mixed eigenvalue

On the conundrum of deriving exact solutions from approximate
On the conundrum of deriving exact solutions from approximate

Fermion Doubling in Loop Quantum Gravity - UWSpace
Fermion Doubling in Loop Quantum Gravity - UWSpace

PT symmetry as a necessary and sufficient condition for unitary time
PT symmetry as a necessary and sufficient condition for unitary time

Stability conditions of diatomic molecules in
Stability conditions of diatomic molecules in

Simulating the Haldane phase in trapped
Simulating the Haldane phase in trapped

Antiresonance and interaction-induced localization in spin and qubit chains with defects
Antiresonance and interaction-induced localization in spin and qubit chains with defects

Electron Deep Orbits of the Hydrogen Atom1
Electron Deep Orbits of the Hydrogen Atom1

Lecture Notes in Statistical Mechanics and Mesoscopics
Lecture Notes in Statistical Mechanics and Mesoscopics

Schrodinger equation in three dimensions
Schrodinger equation in three dimensions

... Finally, we recall that dimensionless energy is ...
Quantum annealing with antiferromagnetic fluctuations
Quantum annealing with antiferromagnetic fluctuations

Chirality quantum phase transition in the Dirac oscillator - E
Chirality quantum phase transition in the Dirac oscillator - E

Spin-Orbit Interactions in Topological Insulators
Spin-Orbit Interactions in Topological Insulators

Adiabatic=Quantum.Ah.. - Duke Computer Science
Adiabatic=Quantum.Ah.. - Duke Computer Science

... Not enough interaction between clock and computer to have terms like: H k  I  | k k |  I  | k  1k  1 | ...
Highlights - UMD Physics
Highlights - UMD Physics

... To improve the guess wavefunction, one can add many adjustable parameters to it, call them λ1 , λ 2 , λ3 , K These are often physically motivated quantities, such as the width of the wavefunction in real-space, or the effective charge of the nucleus as seen by an electron in an atom, or perhaps the ...
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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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