Výsledky vyhledávání - "Sanjib Sabhapandit"

Universal framework for the long-time position distribution of free active particles

Autor: Ion Santra, Urna Basu, Sanjib Sabhapandit

Active particles self-propel themselves with a stochastically evolving velocity, generating a persistent motion leading to a non-diffusive behavior of the position distribution. Nevertheless, an effective diffusive behavior emerges at times much larg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::964b55dc7744f7f81c0d9943b6c1bb7d
http://arxiv.org/abs/2202.12117

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Record statistics for random walks and L\'evy flights with resetting

Autor: Satya N Majumdar, Philippe Mounaix, Sanjib Sabhapandit, Grégory Schehr

We compute exactly the mean number of records $\langle R_N \rangle$ for a time-series of size $N$ whose entries represent the positions of a discrete time random walker on the line. At each time step, the walker jumps by a length $\eta$ drawn indepen

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http://arxiv.org/abs/2110.01539

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Effect of stochastic resetting on Brownian motion with stochastic diffusion coefficient

Autor: Ion Santra, Urna Basu, Sanjib Sabhapandit

Publikováno v: Journal of Physics A: Mathematical and Theoretical. 55:414002

We study the dynamics of a Brownian motion with a diffusion coefficient which evolves stochastically. We first study this process in arbitrary dimensions and find the scaling form and the corresponding scaling function of the position distribution. W

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69b039d0fa6a3234f0b845b67a6fa4d8
https://doi.org/10.1088/1751-8121/ac8dcc

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Active Brownian Motion with Directional Reversals

Autor: Ion Santra, Urna Basu, Sanjib Sabhapandit

Active Brownian motion with intermittent direction reversals is common in bacteria like Myxococcus xanthus and Pseudomonas putida. We show that, for such a motion in two dimensions, the presence of the two timescales set by the rotational diffusion c

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Freezing Transition in the Barrier Crossing Rate of a Diffusing Particle

Autor: Sanjib Sabhapandit, Satya N. Majumdar

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2020, 125 (20), ⟨10.1103/PhysRevLett.125.200601⟩

We study the decay rate $\theta(a)$ that characterizes the late time exponential decay of the first-passage probability density $F_a(t|0) \sim e^{-\theta(a)\, t}$ of a diffusing particle in a one dimensional confining potential $U(x)$, starting from

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30332997cbcfcc0cce5fa119f0e6c5df
https://pubmed.ncbi.nlm.nih.gov/33258622

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Run-and-Tumble particle in inhomogeneous media in one dimension

Autor: Prashant Kumar Singh, Anupam Kundu, Sanjib Sabhapandit

We investigate the run and tumble particle (RTP), also known as persistent Brownian motion, in one dimension. A telegraphic noise $\sigma(t)$ drives the particle which changes between $\pm 1$ values with some rates. Denoting the rate of flip from $1$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23fe04d4a89a9c2d7c786354f3966fb7
http://arxiv.org/abs/2004.11041

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Run-and-tumble particles in two-dimensions : Marginal position distributions

Autor: Urna Basu, Ion Santra, Sanjib Sabhapandit

We study a set of Run-and-tumble particle (RTP) dynamics in two spatial dimensions. In the first case of the orientation {\theta} of the particle can assume a set of n possible discrete values while in the second case {\theta} is a continuous variabl

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Exact stationary state of a run-and-tumble particle with three internal states in a harmonic trap

Autor: Sanjib Sabhapandit, Urna Basu, Satya N. Majumdar, Grégory Schehr, Alberto Rosso

Publikováno v: Journal of Physics A: Mathematical and General
Journal of Physics A: Mathematical and General, IOP Publishing, 2020, ⟨10.10083⟩
Journal of Physics A: Mathematical and Theoretical
Journal of Physics A: Mathematical and Theoretical, IOP Publishing, 2020, 53 (9), ⟨10.1088/1751-8121/ab6af0⟩

We study the motion of a one-dimensional run-and-tumble particle with three discrete internal states in the presence of a harmonic trap of stiffness $\mu.$ The three internal states, corresponding to positive, negative and zero velocities respectivel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abb0da68afc315755bcadd1eb477bc96
https://hal.archives-ouvertes.fr/hal-02512239

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Correction: Direction reversing active Brownian particle in a harmonic potential

Autor: Ion Santra, Urna Basu, Sanjib Sabhapandit

Publikováno v: Soft Matter. 18:7452-7452

Correction for ‘Direction reversing active Brownian particle in a harmonic potential’ by Ion Santra et al., Soft Matter, 2021, 17, 10108–10119, https://doi.org/10.1039/D1SM01118A.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4403281b221122b4ab457dfeeabdf8f
https://doi.org/10.1039/d2sm90116a

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