Results 11 to 20 of about 730 (153)

New formulation of discrete Wigner-Ville distribution

open access: closedElectronics Letters, 1991
A new formulation of the discrete Wigner-Ville distribution is presented which can be implemented directly using standard fast Fourier transform techniques. For a non-negative frequency resolution of N points, only an N point FFT is needed.
Neil Bergmann
openalex   +3 more sources

Probability Representation of Quantum States

open access: yesEntropy, 2021
The review of new formulation of conventional quantum mechanics where the quantum states are identified with probability distributions is presented. The invertible map of density operators and wave functions onto the probability distributions describing ...
Olga V. Man’ko, Vladimir I. Man’ko
doaj   +1 more source

Quantum eigenstates from classical Gibbs distributions

open access: yesSciPost Physics, 2021
We discuss how the language of wave functions (state vectors) and associated non-commuting Hermitian operators naturally emerges from classical mechanics by applying the inverse Wigner-Weyl transform to the phase space probability distribution and ...
Pieter W. Claeys, Anatoli Polkovnikov
doaj   +1 more source

Time-frequency analysis of impact sound by means of the discrete pseudo-Wigner distribution.

open access: bronzeTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1989
Shunsuke Ishimitsu, Hajime Kitagawa
openalex   +3 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

Decoherence models for discrete-time quantum walks and their application to neutral atom experiments

open access: yesNew Journal of Physics, 2014
We discuss decoherence in discrete-time quantum walks in terms of a phenomenological model that distinguishes spin and spatial decoherence. We identify the dominating mechanisms that affect quantum-walk experiments realized with neutral atoms walking in ...
Andrea Alberti   +3 more
doaj   +1 more source

Comparison of DeePMD, MTP, GAP, ACE and MACE Machine‐Learned Potentials for Radiation‐Damage Simulations: A User Perspective

open access: yesAdvanced Intelligent Discovery, EarlyView.
The authors evaluated six machine‐learned interatomic potentials for simulating threshold displacement energies and tritium diffusion in LiAlO2 essential for tritium production. Trained on the same density functional theory data and benchmarked against traditional models for accuracy, stability, displacement energies, and cost, Moment Tensor Potential ...
Ankit Roy   +8 more
wiley   +1 more source

What If Each Voxel Were Measured With a Different Diffusion Protocol?

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 4, Page 2277-2290, April 2026.
ABSTRACT Purpose Expansion of diffusion MRI (dMRI) both into the realm of strong gradients and into accessible imaging with portable low‐field devices brings about the challenge of gradient nonlinearities. Spatial variations of the diffusion gradients make diffusion weightings and directions non‐uniform across the field of view, and deform perfect ...
Santiago Coelho   +7 more
wiley   +1 more source

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