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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7843
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dc.contributor.authorSantra, Ion-
dc.contributor.authorBasu, Urna-
dc.contributor.authorSabhapandit, Sanjib-
dc.date.accessioned2021-11-29T05:49:33Z-
dc.date.available2021-11-29T05:49:33Z-
dc.date.issued2021-10-
dc.identifier.citationSoft Matter, 2021, Vol. 17, p10108-10119en_US
dc.identifier.issn1744-683X-
dc.identifier.issn1744-6848 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7843-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en_US
dc.description.abstractWe study the two-dimensional motion of an active Brownian particle of speed v(0), with intermittent directional reversals in the presence of a harmonic trap of strength mu. The presence of the trap ensures that the position of the particle eventually reaches a steady state where it is bounded within a circular region of radius v(0)/mu, centered at the minimum of the trap. Due to the interplay between the rotational diffusion constant D-R, reversal rate gamma, and the trap strength mu, the steady state distribution shows four different types of shapes, which we refer to as active-I & II, and passive-I & II phases. In the active-I phase, the weight of the distribution is concentrated along an annular region close to the circular boundary, whereas in active-II, an additional central diverging peak appears giving rise to a Mexican hat-like shape of the distribution. The passive-I is marked by a single Boltzmann-like centrally peaked distribution in the large D-R limit. On the other hand, while the passive-II phase also shows a single central peak, it is distinguished from passive-I by a non-Boltzmann like divergence near the origin. We characterize these phases by calculating the exact analytical forms of the distributions in various limiting cases. In particular, we show that for D-R MUCH LESS-THAN gamma, the shape transition of the two-dimensional position distribution from active-II to passive-II occurs at mu = gamma. We compliment these analytical results with numerical simulations beyond the limiting cases and obtain a qualitative phase diagram in the (D-R, gamma, mu(-1)) space.en_US
dc.language.isoenen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.urihttps://arxiv.org/abs/2107.12640en_US
dc.relation.urihttps://doi.org/10.1039/D1SM01118Aen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2021arXiv210712640S/abstracten_US
dc.rights2021 Royal Society of Chemistryen_US
dc.titleDirection reversing active Brownian particle in a harmonic potentialen_US
dc.typeArticleen_US
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