Active Ornstein-Uhlenbeck model for bacterial heat engines

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10491346" target="_blank" >RIV/00216208:11320/24:10491346 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NGY.fJ-Lks" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NGY.fJ-Lks</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.110.064609" target="_blank" >10.1103/PhysRevE.110.064609</a>

Result language

angličtina

Original language name

Active Ornstein-Uhlenbeck model for bacterial heat engines

Original language description

We use Brownian dynamics simulations to study a model of a cyclic bacterial heat engine based on a harmonically confined colloidal probe particle in a bath formed by active Brownian particles. For intermediate activities, active noise experienced by large enough probes becomes Gaussian with exponential autocorrelation function. We show that, in this experimentally pertinent regime, the probability densities for stochastic work, heat, and efficiency are well represented by those of a single active Ornstein-Uhlenbeck particle (AOUP), effectively representing the whole many-body setup. Due to the probe&apos;s fast relaxation in the potential, in typical experimental implementations, good agreement can prevail even when the autocorrelation function of the active noise develops nonexponential tails. Our results show that the AOUP provides a convenient and accurate, analytically tractable effective model to mimic and analyze experimental bacterial heat engines, especially when operating with comparatively large probes and stiff traps.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review E

ISSN

2470-0045

e-ISSN

2470-0053

Volume of the periodical

110

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

064609

UT code for WoS article

001390626100006

EID of the result in the Scopus database

2-s2.0-85213305393