• physics and geometry, there are two closely related vector spaces, usually three-dimensional but in general of any finite dimension. Position space (also...
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  • Thumbnail for Momentum
    mechanics, momentum (pl.: momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and velocity of...
    73 KB (9,797 words) - 22:57, 11 February 2025
  • the application of the quantum wave equation, especially in position and momentum spaces the resonant interaction of three or more waves, which includes...
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  • Thumbnail for Uncertainty principle
    precision with which certain pairs of physical properties, such as position and momentum, can be simultaneously known. In other words, the more accurately...
    139 KB (19,263 words) - 21:15, 14 April 2025
  • phase-space formulation is a formulation of quantum mechanics that places the position and momentum variables on equal footing in phase space. The two...
    27 KB (3,604 words) - 14:56, 2 January 2025
  • Thumbnail for Angular momentum
    Angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical...
    93 KB (13,485 words) - 10:15, 1 May 2025
  • quantum mechanics, the momentum operator is the operator associated with the linear momentum. The momentum operator is, in the position representation, an...
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  • Thumbnail for Wave function
    dimensions and more particles, as well as including other degrees of freedom than position coordinates or momentum components. While Hilbert spaces originally...
    99 KB (13,587 words) - 18:24, 4 April 2025
  • May 2011). "Entropic uncertainty relations in multidimensional position and momentum spaces". Physical Review A. 83 (5): 052124. arXiv:1101.2944. Bibcode:2011PhRvA...
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  • Thumbnail for Relativistic angular momentum
    Angular momentum is an important dynamical quantity derived from position and momentum. It is a measure of an object's rotational motion and resistance...
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  • representation the equations have to be Fourier transformed – see position and momentum space. One approach is to modify the Schrödinger picture to be consistent...
    86 KB (10,172 words) - 23:23, 7 May 2025
  • Thumbnail for Phase space
    point in the phase space. For mechanical systems, the phase space usually consists of all possible values of the position and momentum parameters. It is...
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  • \|} is the Hilbert space norm on L 2 ( R , C ) {\displaystyle L^{2}(\mathbb {R} ,\mathbb {C} )} . Position and momentum space Momentum operator Translation...
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  • Thumbnail for Boltzmann equation
    individual positions and momenta of each particle in the fluid but rather by considering a probability distribution for the position and momentum of a typical...
    36 KB (5,027 words) - 04:28, 7 April 2025
  • analysis and representation, in position or in momentum space, of quantities like wave function, electron charge and spin density, density matrices and all...
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  • Thumbnail for Crystal momentum
    In solid-state physics, crystal momentum or quasimomentum is a momentum-like vector associated with electrons in a crystal lattice. It is defined by the...
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  • QM, the wavefunction varies with space and time, or equivalently momentum and time (see position and momentum space for details), so observables are differential...
    27 KB (3,595 words) - 11:49, 22 April 2025
  • Thumbnail for Morse potential
    ; Springborg, M. (1988). "The Morse oscillator in position space, momentum space, and phase space" (PDF). The Journal of Chemical Physics. 88 (7): 4535...
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  • mechanics, the angular momentum operator is one of several related operators analogous to classical angular momentum. The angular momentum operator plays a...
    42 KB (6,691 words) - 18:42, 16 April 2025
  • of every atom when written in position space. (See position and momentum space.) Finally, using the positionposition correlation function, it can be...
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  • Thumbnail for Space tether
    Space tethers are long cables which can be used for propulsion, momentum exchange, stabilization and attitude control, or maintaining the relative positions...
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  • beam position (center of the beam) and its total linear momentum. A beam of light carries a linear momentum P {\displaystyle \mathbf {P} } , and hence...
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  • Thumbnail for Infrared spectroscopy
    molecules, mapping of phonon modes in position- and momentum-space, vibrational surface and bulk mode mapping on nanocubes, and investigations of polariton modes...
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  • {\displaystyle T_{q}Q} , the tangent space to the manifold Q at point q. The function P X {\displaystyle P_{X}} is called the momentum function corresponding to...
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  • Thumbnail for Loop quantum gravity
    called the loop transform and is analogous to the momentum representation in quantum mechanics (see Position and momentum space). The QM representation...
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  • Thumbnail for Spacetime
    Spacetime (redirect from Space and time)
    is a time component that allows the spacetime momentum vector to transform like the spacetime position vector ⁠ ( x , t ) {\displaystyle (x,t)} ⁠. In...
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  • relevant state space being position and momentum space. In dynamical systems theory the state space is usually taken to be a more general phase space. On the...
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  • Thumbnail for Stress–energy tensor
    stress–energy–momentum tensor or the energy–momentum tensor, is a tensor physical quantity that describes the density and flux of energy and momentum in spacetime...
    25 KB (4,040 words) - 17:23, 6 February 2025
  • Thumbnail for Particle in a box
    particle; the measurable properties of the particle (such as its position, momentum and energy) may all be derived from the wave function. The wave function...
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  • Thumbnail for Equations of motion
    the commutator, the phase space formulation closely follows classical Hamiltonian mechanics, placing position and momentum on equal footing, the Feynman...
    55 KB (7,509 words) - 19:06, 27 February 2025