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  2. Harmonic oscillator - Wikipedia

    en.wikipedia.org/wiki/Harmonic_oscillator

    Step response of a damped harmonic oscillator; curves are plotted for three values of μ = ω 1 = ω 0 √ 1 − ζ 2. Time is in units of the decay time τ = 1/(ζω 0). The value of the damping ratio ζ critically determines the behavior of the system. A damped harmonic oscillator can be:

  3. Rabi problem - Wikipedia

    en.wikipedia.org/wiki/Rabi_problem

    In the classical approach, the Rabi problem can be represented by the solution to the driven damped harmonic oscillator with the electric part of the Lorentz force as the driving term: ¨ + ˙ + = (,),

  4. Fradkin tensor - Wikipedia

    en.wikipedia.org/wiki/Fradkin_tensor

    The Fradkin tensor is orthogonal to the angular momentum =: = contracting the Fradkin tensor with the displacement vector gives the relationship =. The 5 independent components of the Fradkin tensor and the 3 components of angular momentum give the 8 generators of (), the three-dimensional special unitary group in 3 dimensions, with the relationships

  5. Langevin equation - Wikipedia

    en.wikipedia.org/wiki/Langevin_equation

    This plot corresponds to solutions of the complete Langevin equation for a lightly damped harmonic oscillator, obtained using the Euler–Maruyama method. The left panel shows the time evolution of the phase portrait at different temperatures. The right panel captures the corresponding equilibrium probability distributions.

  6. Duhamel's integral - Wikipedia

    en.wikipedia.org/wiki/Duhamel's_integral

    If a system initially rests at its equilibrium position, from where it is acted upon by a unit-impulse at the instance t=0, i.e., p(t) in the equation above is a Dirac delta function δ(t), () = | = =, then by solving the differential equation one can get a fundamental solution (known as a unit-impulse response function)

  7. List of equations in classical mechanics - Wikipedia

    en.wikipedia.org/wiki/List_of_equations_in...

    SHM, DHM, SHO, and DHO refer to simple harmonic motion, damped harmonic motion, simple harmonic oscillator and damped harmonic oscillator respectively. Equations of motion Physical situation

  8. Transient response - Wikipedia

    en.wikipedia.org/wiki/Transient_response

    Damped oscillation is a typical transient response, where the output value oscillates until finally reaching a steady-state value. In electrical engineering and mechanical engineering, a transient response is the response of a system to a change from an equilibrium or a steady state. The transient response is not necessarily tied to abrupt ...

  9. Complex harmonic motion - Wikipedia

    en.wikipedia.org/wiki/Complex_harmonic_motion

    Damped harmonic motion is a real oscillation, in which an object is hanging on a spring. Because of the existence of internal friction and air resistance, the system will over time experience a decrease in amplitude. The decrease of amplitude is due to the fact that the energy goes into thermal energy. [1] Damped harmonic motion happens because ...