Thermodynamics of superdiffusion generated by Lévy–Wiener fluctuating forces

2018
journal article
article
cris.lastimport.wos2024-04-09T19:08:07Z
dc.abstract.enScale free Lévy motion is a generalized analogue of the Wiener process. Its time derivative extends the notion of "white noise" to non-Gaussian noise sources, and as such, it has been widely used to model natural signal variations described by an overdamped Langevin stochastic differential equation. Here, we consider the dynamics of an archetypal model: a Brownian-like particle is driven by external forces, and noise is represented by uncorrelated Lévy fluctuations. An unperturbed system of that form eventually attains a steady state which is uniquely determined by the set of parameter values. We show that the analyzed Markov process with the stability index $\alpha$ < 2 violates the detailed balance, i.e., its stationary state is quantified by a stationary probability density and nonvanishing current. We discuss consequences of the non-Gibbsian character of the stationary state of the system and its impact on the general form of the fluctuation–dissipation theorem derived for weak external forcing.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorKuśmierz, Łukaszpl
dc.contributor.authorDybiec, Bartłomiej - 102110 pl
dc.contributor.authorGudowska-Nowak, Ewa - 128235 pl
dc.date.accessioned2018-10-24T08:42:03Z
dc.date.available2018-10-24T08:42:03Z
dc.date.issued2018pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number9pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume20pl
dc.identifier.articleid658pl
dc.identifier.doi10.3390/e20090658pl
dc.identifier.eissn1099-4300pl
dc.identifier.projectROD UJ / OPpl
dc.identifier.urihttps://ruj.uj.edu.pl/xmlui/handle/item/58593
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subject.ennonequilibrium and irreversible thermodynamicspl
dc.subject.enfluctuation phenomenapl
dc.subject.enrandom walks and Lévy flightspl
dc.subtypeArticlepl
dc.titleThermodynamics of superdiffusion generated by Lévy–Wiener fluctuating forcespl
dc.title.journalEntropypl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-09T19:08:07Z
dc.abstract.enpl
Scale free Lévy motion is a generalized analogue of the Wiener process. Its time derivative extends the notion of "white noise" to non-Gaussian noise sources, and as such, it has been widely used to model natural signal variations described by an overdamped Langevin stochastic differential equation. Here, we consider the dynamics of an archetypal model: a Brownian-like particle is driven by external forces, and noise is represented by uncorrelated Lévy fluctuations. An unperturbed system of that form eventually attains a steady state which is uniquely determined by the set of parameter values. We show that the analyzed Markov process with the stability index $\alpha$ < 2 violates the detailed balance, i.e., its stationary state is quantified by a stationary probability density and nonvanishing current. We discuss consequences of the non-Gibbsian character of the stationary state of the system and its impact on the general form of the fluctuation–dissipation theorem derived for weak external forcing.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Kuśmierz, Łukasz
dc.contributor.authorpl
Dybiec, Bartłomiej - 102110
dc.contributor.authorpl
Gudowska-Nowak, Ewa - 128235
dc.date.accessioned
2018-10-24T08:42:03Z
dc.date.available
2018-10-24T08:42:03Z
dc.date.issuedpl
2018
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.numberpl
9
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
20
dc.identifier.articleidpl
658
dc.identifier.doipl
10.3390/e20090658
dc.identifier.eissnpl
1099-4300
dc.identifier.projectpl
ROD UJ / OP
dc.identifier.uri
https://ruj.uj.edu.pl/xmlui/handle/item/58593
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri*
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subject.enpl
nonequilibrium and irreversible thermodynamics
dc.subject.enpl
fluctuation phenomena
dc.subject.enpl
random walks and Lévy flights
dc.subtypepl
Article
dc.titlepl
Thermodynamics of superdiffusion generated by Lévy–Wiener fluctuating forces
dc.title.journalpl
Entropy
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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