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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8040
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dc.contributor.authorSarkar, Ritwick-
dc.contributor.authorSantra, Ion-
dc.contributor.authorBasu, Urna-
dc.date.accessioned2023-02-10T06:04:15Z-
dc.date.available2023-02-10T06:04:15Z-
dc.date.issued2023-01-17-
dc.identifier.citationPhysical Review E, 2023, Vol.107, p014123en_US
dc.identifier.issn2470-0053 (Online)-
dc.identifier.issn2470-0045-
dc.identifier.urihttp://hdl.handle.net/2289/8040-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en_US
dc.description.abstractWe study the stationary state of a chain of harmonic oscillators driven by two active reservoirs at the two ends. These reservoirs exert correlated stochastic forces on the boundary oscillators which eventually leads to a nonequilibrium stationary state of the system. We consider three most well-known dynamics for the active force, namely, the active Ornstein-Uhlenbeck process, run-and-tumble process, and active Brownian process, all of which have exponentially decaying two-point temporal correlations but very different higher-order fluctuations. We show that, irrespective of the specific dynamics of the drive, the stationary velocity fluctuations are Gaussian in nature with a kinetic temperature which remains uniform in the bulk. Moreover, we find the emergence of an “equipartition of energy” in the bulk of the system—the bulk kinetic temperature equals the bulk potential temperature in the thermodynamic limit. We also calculate the stationary distribution of the instantaneous energy current in the bulk which always shows a logarithmic divergence near the origin and asymmetric exponential tails. The signatures of specific active driving become visible in the behavior of the oscillators near the boundary. This is most prominent for the RTP- and ABP-driven chains where the boundary velocity distributions become non-Gaussian and the current distribution has a finite cutoff.en_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttps://arxiv.org/abs/2210.09035en_US
dc.relation.urihttps://doi.org/10.1103/PhysRevE.107.014123en_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2023PhRvE.107a4123S/abstracten_US
dc.rights2023 American Physical Societyen_US
dc.subjectfluctuation and noiseen_US
dc.subjectnonequilibrium statistical mechanicsen_US
dc.subjectharmonic oscillatoren_US
dc.subjectgreen's function methodsen_US
dc.titleStationary states of activity-driven harmonic chainsen_US
dc.typeArticleen_US
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