Search Results - "Chechkin, A V"

Barrier crossing of a Lévy flight by Chechkin, A. V, Gonchar, V. Yu, Klafter, J, Metzler, R

“…We consider the barrier crossing in a bistable potential for a random-walk process that is driven by Lévy noise of stable index α. It is shown that the…”
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Fractional Fokker-Planck equation for ultraslow kinetics by Chechkin, A. V, Klafter, J, Sokolov, I. M

“…Several classes of physical systems exhibit ultraslow diffusion for which the mean-squared displacement at long times grows as a power of the logarithm of time…”
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Retarding subdiffusion and accelerating superdiffusion governed by distributed-order fractional diffusion equations by Chechkin, A V, Gorenflo, R, Sokolov, I M

“…We propose diffusionlike equations with time and space fractional derivatives of the distributed order for the kinetic description of anomalous diffusion and…”
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Understanding anomalous transport in intermittent maps: From continuous-time random walks to fractals by Korabel, N, Chechkin, A. V, Klages, R, Sokolov, I. M, Gonchar, V. Yu

“…We show that the generalized diffusion coefficient of a subdiffusive intermittent map is a fractal function of control parameters. A modified continuous-time…”
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Generalized fractional diffusion equations for accelerating subdiffusion and truncated Lévy flights by Chechkin, A V, Gonchar, V Yu, Gorenflo, R, Korabel, N, Sokolov, I M

“…Fractional diffusion equations are widely used to describe anomalous diffusion processes where the characteristic displacement scales as a power of time. For…”
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First passage behaviour of fractional Brownian motion in two-dimensional wedge domains by Jeon, J.-H, Chechkin, A. V, Metzler, R

“…We study the survival probability and the corresponding first passage time density of fractional Brownian motion (FBM) confined to a two-dimensional open wedge…”
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New measurement of the neutron lifetime with a large gravitational trap by Serebrov, A. P., Kolomenskiy, E. A., Fomin, A. K., Krasnoschekova, I. A., Vassiljev, A. V., Prudnikov, D. M., Shoka, I. V., Chechkin, A. V., Chaikovskii, M. E., Varlamov, V. E., Ivanov, S. N., Pirozhkov, A. N., Geltenbort, P., Zimmer, O., Jenke, T., Van der Grinten, M., Tucker, M.

“…The lifetime of the neutron is one of the key physical quantities used to determine the weak interaction parameters and to test predictions of the theory of…”
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Lévy ratchet in a weak noise limit: Theory and simulation by Pavlyukevich, I., Dybiec, B., Chechkin, A.V., Sokolov, I.M.

“… We study the motion of a particle in a time-independent periodic potential with broken mirror symmetry under action of a Lévy-stable noise (Lévy ratchet). We…”
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Experimental Setup for Neutron Lifetime Measurements with a Large Gravitational Trap at Low Temperatures by Serebrov, A. P., Kolomenskii, E. A., Fomin, A. K., Koptyukhov, A. O., Krasnoshchekova, I. A., Vasil’ev, A. V., Prudnikov, D. M., Shoka, I. V., Chechkin, A. V., Chaikovskii, M. E., Varlamov, V. E., Ivanov, S. N., Pirozhkov, A. N., Geltenbort, P., Zimmer, O., Jenke, T., van der Grinten, M. G. D., Tucker, M. A. H.

“…Currently the most accurate measurements of neutron lifetime are being performed at the Petersburg Nuclear Physics Institute with ultracold neutrons (UCNs)…”
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Lévy anomalous diffusion and fractional Fokker–Planck equation by Yanovsky, V.V., Chechkin, A.V., Schertzer, D., Tur, A.V.

“…We demonstrate that the Fokker–Planck equation can be generalized into a ‘fractional Fokker–Planck’ equation, i.e., an equation which includes fractional space…”
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Rate equations, spatial moments, and concentration profiles for mobile-immobile models with power-law and mixed waiting time distributions by Doerries, T. J, Chechkin, A. V, Schumer, R, Metzler, R

“…Phys. Rev. E 105, 014105 (2022) We present a framework for systems in which diffusion-advection transport of a tracer substance in a mobile zone is interrupted…”
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Stochastic resetting by a random amplitude by Dahlenburg, M, Chechkin, A. V, Schumer, R, Metzler, R

“…Phys. Rev. E 103, 052123 (2021) Stochastic resetting, a diffusive process whose amplitude is "reset" to the origin at random times, is a vividly studied…”
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Length scales in Brownian yet non-Gaussian dynamics by Miotto, J. M, Pigolotti, S, Chechkin, A. V, Roldán-Vargas, S

“…Phys. Rev. X 11, 031002 (2021) According to the classical theory of Brownian motion, the mean squared displacement of diffusing particles evolves linearly with…”
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First passage statistics for diffusing diffusivity by Sposini, V, Chechkin, A. V, Metzler, R

“…A rapidly increasing number of systems is identified in which the stochastic motion of tracer particles follows the Brownian law $\langle\mathbf{r}^2(t)…”
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Probabilistic properties of detrended fluctuation analysis for Gaussian processes by Sikora, G, Hoell, M, Wylomanska, A, Gajda, J, Chechkin, A. V, Kantz, H

“…Phys. Rev. E 101, 032114 (2020) The detrended fluctuation analysis (DFA) is one of the most widely used tools for the detection of long-range correlations in…”
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Search for explanation of the neutron lifetime anomaly by Serebrov, A. P, Chaikovskii, M. E, Klyushnikov, G. N, Zherebtsov, O. M, Chechkin, A. V

“…Phys. Rev. D 103, 074010 (2021) All results of the neutron lifetime measurements performed in the last 20 years with the UCN storage method are in a good…”
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Fluctuation relations for anomalous dynamics generated by time-fractional Fokker-Planck equations by Dieterich, P, Klages, R, Chechkin, A. V

“…New J. Phys. 17, 075004 (2015) (Focus Issue on Stochastic Thermodynamics) Anomalous dynamics characterized by non-Gaussian probability distributions (PDFs)…”
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Edge fluctuation studies in Heliotron J by Mizuuchi, T., Chechkin, V.V., Ohashi, K., Sorokovoy, E.L., Chechkin, A.V., Gonchar, V.Yu, Takahashi, K., Kobayashi, S., Nagasaki, K., Okada, H., Yamamoto, S., Sano, F., Kondo, K., Nishino, N., Kawazome, H., Shidara, H., Kaneko, S., Fukagawa, Y., Morita, Y., Nakazawa, S., Nishio, S., Tsuboi, S., Yamada, M.

“…Low frequency and small-scale fluctuations of density and potential near the last closed flux surface are investigated by using Langmuir probes for the second…”
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Brownian yet non-Gaussian diffusion: from superstatistics to subordination of diffusing diffusivities by Chechkin, A. V, Seno, F, Metzler, R, Sokolov, I. M

“…Phys. Rev. X 7, 021002 (2017) A growing number of biological, soft, and active matter systems are observed to exhibit normal diffusive dynamics with a linear…”
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Linear relaxation processes governed by fractional symmetric kinetic equations by Chechkin, A. V., Gonchar, V. Yu

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