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Kappa Distributions and Isotropic Turbulence [PDF]

open access: yesEntropy, 2019
In this work, the two-point probability density function (PDF) for the velocity field of isotropic turbulence is modeled using the kappa distribution and the concept of superstatistics.
Elias Gravanis   +3 more
doaj   +5 more sources

Olbert’s Kappa Fermi and Bose Distributions [PDF]

open access: yesFrontiers in Physics, 2021
The quantum version of Olbert’s kappa distribution applicable to fermions is obtained. Its construction is straightforward but requires recognition of the differences in the nature of states separated by Fermi momenta. Its complement, the bosonic version
R. A. Treumann   +2 more
doaj   +3 more sources

Langevin based turbulence model and its relationship with Kappa distributions [PDF]

open access: yesScientific Reports, 2022
Kappa distributions (or $$\kappa $$ κ -like distributions) represent a robust framework to characterize and understand complex phenomena with high degrees of freedom, as turbulent systems, using non-extensive statistical mechanics.
Iván Gallo-Méndez, Pablo S. Moya
doaj   +2 more sources

Statistical Uncertainties of Space Plasma Properties Described by Kappa Distributions [PDF]

open access: yesEntropy, 2020
The velocities of space plasma particles often follow kappa distribution functions, which have characteristic high energy tails. The tails of these distributions are associated with low particle flux and, therefore, it is challenging to precisely resolve
Georgios Nicolaou, George Livadiotis
doaj   +2 more sources

Correlations and Kappa Distributions: Numerical Experiment and Physical Understanding [PDF]

open access: yesEntropy
Kappa distributions, their statistical framework, and their thermodynamic origin describe systems with correlations among their particle energies, residing in stationary states out of classical thermal equilibrium/space plasmas, from solar wind to the ...
David J. McComas   +2 more
doaj   +2 more sources

Generalised partition functions: inferences on phase space distributions [PDF]

open access: yesAnnales Geophysicae, 2016
It is demonstrated that the statistical mechanical partition function can be used to construct various different forms of phase space distributions. This indicates that its structure is not restricted to the Gibbs–Boltzmann factor prescription which ...
R. A. Treumann   +2 more
doaj   +5 more sources

On the Stochastic Dynamics for the Regularized Kappa-Distributed Plasmas [PDF]

open access: yesEntropy
The generalized fluctuation–dissipation relations that produce the regularized Kappa distributions are studied. The two-variable Fokker–Planck equation, as well as its reductions in the absence of potential and in the overdamped limit, are considered ...
Ran Guo
doaj   +2 more sources

Exploring Numerical Correlations: Models and Thermodynamic Kappa [PDF]

open access: yesEntropy
McComas et al. (2025) introduced a numerical experiment, where ordinary uncorrelated collisions between collision pairs are followed by other, controlled (correlated) collisions, shedding light on the emergence of kappa distributions through particle ...
Nicholas V. Sarlis   +2 more
doaj   +2 more sources

Development of an algorithm for ethnicity recording in cohorts from the UK Clinical Practice Research Datalink primary care and linked Hospital Episode Statistics databases [PDF]

open access: yesBMJ Open
Objective To evaluate various prioritisation strategies within an algorithm designed to ascertain the most likely ethnicity and create a standardised methodology to benefit future research.Design Retrospective cohort study.Setting The Clinical Practice ...
Rachael Williams   +2 more
doaj   +2 more sources

On Extended d-D Kappa Distribution

open access: yesAxioms
The thermal Doppler broadening of spectral profiles for particle populations in the absence or presence of potential fields can be described by kappa distributions.
Arak M. Mathai, Hans J. Haubold
doaj   +3 more sources

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