Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Aleksei V Chechkin"'
Autor:
Costantino Di Bello, Aleksei V Chechkin, Alexander K Hartmann, Zbigniew Palmowski, Ralf Metzler
Publikováno v:
New Journal of Physics, Vol 25, Iss 8, p 082002 (2023)
Stochastic resetting is a rapidly developing topic in the field of stochastic processes and their applications. It denotes the occasional reset of a diffusing particle to its starting point and effects, inter alia, optimal first-passage times to a ta
Externí odkaz:
https://doaj.org/article/b8e8383fc9564c77aaafd70aff3f33c6
Publikováno v:
New Journal of Physics, Vol 25, Iss 6, p 063009 (2023)
We analyse the transport of diffusive particles that switch between mobile and immobile states with finite rates. We focus on the effect of advection on the density functions and mean squared displacements (MSDs). At relevant intermediate time scales
Externí odkaz:
https://doaj.org/article/f475fbd855174476b11fe3889dd2774d
Publikováno v:
New Journal of Physics, Vol 25, Iss 1, p 013010 (2023)
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://doaj.org/article/694b4956f4e149c38b9c33a426a3283f
Autor:
Amin Padash, Erez Aghion, Alexander Schulz, Eli Barkai, Aleksei V Chechkin, Ralf Metzler, Holger Kantz
Publikováno v:
New Journal of Physics, Vol 24, Iss 7, p 073026 (2022)
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://doaj.org/article/c7bce49531dd4ae39f11abdbd809db0b
Leveraging large-deviation statistics to decipher the stochastic properties of measured trajectories
Autor:
Samudrajit Thapa, Agnieszka Wyłomańska, Grzegorz Sikora, Caroline E Wagner, Diego Krapf, Holger Kantz, Aleksei V Chechkin, Ralf Metzler
Publikováno v:
New Journal of Physics, Vol 23, Iss 1, p 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:
https://doaj.org/article/c2d14998cd89476ea54f7153b16915ab
Publikováno v:
New Journal of Physics, Vol 22, Iss 8, p 083041 (2020)
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 ne
Externí odkaz:
https://doaj.org/article/76a788afb63a4c1897f8c6d15ee7a770
Autor:
Vladimir V Palyulin, George Blackburn, Michael A Lomholt, Nicholas W Watkins, Ralf Metzler, Rainer Klages, Aleksei V Chechkin
Publikováno v:
New Journal of Physics, Vol 21, Iss 10, p 103028 (2019)
For both Lévy flight and Lévy walk search processes we analyse the full distribution of first-passage and first-hitting (or first-arrival) times. These are, respectively, the times when the particle moves across a point at some given distance from
Externí odkaz:
https://doaj.org/article/5b0331c8bc524a25b20bd3e9da9fb8a4
Publikováno v:
New Journal of Physics, Vol 20, Iss 4, p 043044 (2018)
A considerable number of systems have recently been reported in which Brownian yet non-Gaussian dynamics was observed. These are processes characterised by a linear growth in time of the mean squared displacement, yet the probability density function
Externí odkaz:
https://doaj.org/article/c819029ca1d44a9f9db7b0333e9f6ae3
Publikováno v:
New Journal of Physics, Vol 19, Iss 6, p 063045 (2017)
We introduce three strategies for the analysis of financial time series based on time averaged observables. These comprise the time averaged mean squared displacement (MSD) as well as the ageing and delay time methods for varying fractions of the fin
Externí odkaz:
https://doaj.org/article/fa0c364505b14663b198f851ae3613ed
Publikováno v:
PLoS ONE, Vol 8, Iss 3, p e59036 (2013)
The movement of organisms is subject to a multitude of influences of widely varying character: from the bio-mechanics of the individual, over the interaction with the complex environment many animals live in, to evolutionary pressure and energy const
Externí odkaz:
https://doaj.org/article/c4b2c5f96ee949edaabb36f86432b212