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Classical distribution functions derived from Wigner distribution functions [PDF]

open access: yesJournal of Physics A: Mathematical and General, 1995
Summary: A mapping which relates the Wigner phase-space distribution function associated with a given stationary quantum-mechanical wavefunction to a specific solution of the time-independent Liouville transport equation is obtained. Two examples are studied.
openaire   +2 more sources

Comment on ‘Wigner function for a particle in an infinite lattice’

open access: yesNew Journal of Physics, 2013
It is pointed out that in a recent paper (2012 New J. Phys. 14 103009) in which a Wigner function for a particle in an infinite lattice (a system described by an unbounded discrete coordinate and its conjugate angle-like momentum) has been introduced, no
João P S Bizarro
doaj   +1 more source

Angular dependence of the Wigner time delay upon strong-field ionization from an aligned p orbital

open access: yesPhysical Review Research, 2023
We present experimental data on the strong-field ionization of the argon dimer in a co-rotating two-color laser field. We observe a subcycle interference pattern in the photoelectron momentum distribution and infer the Wigner time delay using holographic
D. Trabert   +9 more
doaj   +1 more source

On the Octonion Cross Wigner Distribution of 3-D Signals

open access: yesApplied Sciences, 2022
This paper introduces definitions of the octonion cross Wigner distribution (OWD) and the octonion ambiguity function, forming a pair of octonion Fourier transforms. The main part is devoted to the study of the basic properties of the OWD. Among them are
Łukasz Błaszczyk, Kajetana Snopek
doaj   +1 more source

Wigner Trajectory Characteristics in Phase Space and Field Theory [PDF]

open access: yes, 1998
Exact characteristic trajectories are specified for the time-propagating Wigner phase-space distribution function. They are especially simple---indeed, classical---for the quantized simple harmonic oscillator, which serves as the underpinning of the ...
Antousen F   +22 more
core   +4 more sources

Wigner-Ville distribution and ambiguity function associated with the quaternion offset linear canonical transform

open access: yesDemonstratio Mathematica, 2022
Wigner-Ville transform or Wigner-Ville distribution (WVD) associated with quaternion offset linear canonical transform (QOLCT) was proposed by Bhat and Dar. This work is devoted to the development of the theory proposed by them, which is an emerging tool
Bhat Mohammad Younus   +3 more
doaj   +1 more source

Fractional Fourier Transform and Distributions in the Ray Space: Application for the Analysis of Radio Occultation Data

open access: yesRemote Sensing, 2022
The concept of the phase space plays a key role in the analysis of oscillating signals. For a 1-D signal, the coordinates of the 2-D phase space are the observation time and the instant frequency. For measurements of propagating wave fields, the time and
Michael Gorbunov, Oksana Dolovova
doaj   +1 more source

Spin kinetic theory - quantum kinetic theory in extended phase space

open access: yes, 2010
The concept of phase space distribution functions and their evolution is used in the case of en enlarged phase space. In particular, we include the intrinsic spin of particles and present a quantum kinetic evolution equation for a scalar quasi ...
Bertotti G.   +21 more
core   +1 more source

Wigner distribution functions for complex dynamical systems: a path integral approach

open access: yes, 2012
Starting from Feynman's Lagrangian description of quantum mechanics, we propose a method to construct explicitly the propagator for the Wigner distribution function of a single system.
Brosens   +14 more
core   +1 more source

Transient quantum evolution of 2D electrons under photoexcitation of a deep center

open access: yes, 2007
We have considered the ballistic propagation of the 2D electron Wigner distribution, which is excited by an ultrashort optical pulse from a short-range impurity into the first quantized subband of a selectively-doped heterostructure with high mobility ...
A. Hernandez-Cabrera   +9 more
core   +1 more source

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