Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Aleksei V. Chechkin"'
Autor:
Wei Wang, Michał Balcerek, Krzysztof Burnecki, Aleksei V. Chechkin, Skirmantas Janušonis, Jakub Ślęzak, Thomas Vojta, Agnieszka Wyłomańska, Ralf Metzler
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p L032025 (2023)
We propose a generalization of the widely used fractional Brownian motion (FBM), memory-multi-FBM (MMFBM), to describe viscoelastic or persistent anomalous diffusion with time-dependent memory exponent α(t) in a changing environment. In MMFBM the bu
Externí odkaz:
https://doaj.org/article/e3f1d5499b9942f09b5b9567dec1cba1
Publikováno v:
Fractal and Fractional, Vol 6, Iss 5, p 260 (2022)
We study the first-arrival (first-hitting) dynamics and efficiency of a one-dimensional random search model performing asymmetric Lévy flights by leveraging the Fokker–Planck equation with a δ-sink and an asymmetric space-fractional derivative op
Externí odkaz:
https://doaj.org/article/8e50d7a7efce42df8d185e8e96ef70c9
Publikováno v:
Physical Review X, Vol 11, Iss 3, p 031002 (2021)
According to the classical theory of Brownian motion, the mean-squared displacement of diffusing particles evolves linearly with time, whereas the distribution of their displacements is Gaussian. However, recent experiments on mesoscopic particle sys
Externí odkaz:
https://doaj.org/article/39e94b29a290409788c79ef30545653c
Publikováno v:
Physical Review X, Vol 7, Iss 2, p 021002 (2017)
A growing number of biological, soft, and active matter systems are observed to exhibit normal diffusive dynamics with a linear growth of the mean-squared displacement, yet with a non-Gaussian distribution of increments. Based on the Chubinsky-Slater
Externí odkaz:
https://doaj.org/article/68c63a7434ea473fba0493574ffd51f7
Publikováno v:
Statistical Methods & Applications. 31:387-424
The class of $$\alpha$$ α -stable distributions is ubiquitous in many areas including signal processing, finance, biology, physics, and condition monitoring. In particular, it allows efficient noise modeling and incorporates distributional propertie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb372bfe1788e99f7f715cd98fd26c60
https://doi.org/10.1007/s10260-021-00571-9
https://doi.org/10.1007/s10260-021-00571-9
We study the effect of randomly distributed diffusivities and speeds in two models for active particle dynamics with active and passive fluctuations. We demonstrate how non-Gaussian displacement distributions emerge in these models in the long time l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34ff4466100a30ca51c4d2dfe9e0d469
http://arxiv.org/abs/2208.02780
http://arxiv.org/abs/2208.02780
Autor:
Amin Padash, Erez Aghion, Alexander Schulz, Eli Barkai, Aleksei V Chechkin, Ralf Metzler, Holger Kantz
Publikováno v:
New Journal of Physics
We perform numerical studies of a thermally driven, overdamped particle in a random quenched force field, known as the Sinai model. We compare the unbounded motion on an infinite 1-dimensional domain to the motion in bounded domains with reflecting b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b084bc395802dcd65970a6c56b6fa2d7
http://arxiv.org/abs/2207.02936
http://arxiv.org/abs/2207.02936
Publikováno v:
Physical Review E. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dba280c006cedf25df382a8376dab692
https://doi.org/10.1103/physreve.105.029901
https://doi.org/10.1103/physreve.105.029901
We present a framework for systems in which diffusion-advection transport of a tracer substance in a mobile zone is interrupted by trapping in an immobile zone. Our model unifies different model approaches based on distributed-order diffusion equatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d2e8454df0e5cbc3e8457e06a8117b8
Autor:
Nicholas Watkins, Ian J. Ford, Sandra C. Chapman, Rainer Klages, Aleksei V. Chechkin, David A. Stainforth
Publikováno v:
Unifying Themes in Complex Systems X ISBN: 9783030673178
Climate science employs a hierarchy of models, trading the tractability of simplified energy balance models (EBMs) against the detail of Global Circulation Models. Since the pioneering work of Hasselmann, stochastic EBMs have allowed treatment of cli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c230a3d18bd15bd181325555eef0936
http://eprints.lse.ac.uk/111914/
http://eprints.lse.ac.uk/111914/