Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Chechkin, Aleksei V."'
Autor:
Wang, Wei, Balcerek, Michal, Burnecki, Krzysztof, Chechkin, Aleksei V., Janusonis, Skirmantas, Slezak, Jakub, Vojta, Thomas, Wylomanska, Agnieszka, Metzler, Ralf
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 $\alpha(t)$ in a changing environment. In MMFBM
Externí odkaz:
http://arxiv.org/abs/2303.01551
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:
http://arxiv.org/abs/2208.02780
Autor:
Padash, Amin, Aghion, Erez, Schulz, Alexander, Barkai, Eli, Chechkin, Aleksei V, Metzler, Ralf, Kantz, Holger
Publikováno v:
New J. Phys. 24 (2022) 073026
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:
http://arxiv.org/abs/2207.02936
We study the diffusive motion of a particle in a subharmonic potential of the form $U(x)=|x|^c$ ($0
Externí odkaz:
http://arxiv.org/abs/2203.01566
Autor:
Kurilovich, Aleksandr A., Mantsevich, Vladimir N., Stevenson, Keith J., Chechkin, Aleksei V., Palyulin, Vladimir V.
Publikováno v:
Phys. Chem. Chem. Phys., 2020, 22, 24686-24696
We present a diffusion-based simulation and theoretical models for explanation of photoluminescence (PL) emission intensity in semiconductor nanoplatelets. It is shown that the shape of PL intensity curves can be reproduced by the interplay of recomb
Externí odkaz:
http://arxiv.org/abs/2101.06623
Autor:
Capala, Karol, Padash, Amin, Chechkin, Aleksei V., Shokri, Babak, Metzler, Ralf, Dybiec, Bartlomiej
The escape from a potential well is an archetypal problem in the study of stochastic dynamical systems, representing real-world situations from chemical reactions to leaving an established home range in movement ecology. Concurrently, L{\'e}vy noise
Externí odkaz:
http://arxiv.org/abs/2007.05754
Leveraging large-deviation statistics to decipher the stochastic properties of measured trajectories
Autor:
Thapa, Samudrajit, Wyłomańska, Agnieszka, Sikora, Grzegorz, Wagner, Caroline E., Krapf, Diego, Kantz, Holger, Chechkin, Aleksei V., Metzler, Ralf
Publikováno v:
New J. Phys. 23 013008 (2021)
Extensive time-series encoding the position of particles such as viruses, vesicles, or individual proteins are routinely garnered in single-particle tracking experiments or supercomputing studies. They contain vital clues on how viruses spread or dru
Externí odkaz:
http://arxiv.org/abs/2005.02099
Autor:
Padash, Amin, Chechkin, Aleksei V., Dybiec, Bartłomiej, Magdziarz, Marcin, Shokri, Babak, Metzler, Ralf
Publikováno v:
J. Phys. A: Math. Theor. 53, 275002 (2020)
We investigate the first-passage dynamics of symmetric and asymmetric L\'evy flights in a semi-infinite and bounded intervals. By solving the space-fractional diffusion equation, we analyse the fractional-order moments of the first-passage time proba
Externí odkaz:
http://arxiv.org/abs/2005.02095
The passive and active motion of micron-sized tracer particles in crowded liquids and inside living biological cells is ubiquitously characterised by "viscoelastic" anomalous diffusion, in which the increments of the motion feature long-ranged negati
Externí odkaz:
http://arxiv.org/abs/2005.00562
Publikováno v:
Phys. Rev. E 100, 012120 (2019)
We investigate an intermittent stochastic process in which the diffusive motion with time-dependent diffusion coefficient $D(t) \sim t^{\alpha -1}$ with $\alpha > 0$ (scaled Brownian motion) is stochastically reset to its initial position, and starts
Externí odkaz:
http://arxiv.org/abs/1812.05667