Data and code: Motility-induced coexistence of a hot liquid and a cold gas

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dc.contributor.author Hecht, Lukas
dc.contributor.author Dong, Iris
dc.contributor.author Liebchen, Benno
dc.date.accessioned 2024-03-18T16:58:32Z
dc.date.available 2024-03-18T16:58:32Z
dc.date.created 2024-03-18
dc.date.issued 2024-03-18
dc.description If two phases exist at the same time, such as a gas and a liquid, they have the same temperature. This fundamental law of equilibrium physics is known to apply even to many non-equilibrium systems. However, recently, there has been much attention in the finding that inertial self-propelled particles like Janus colloids in a plasma or microflyers could self-organize into a hot gas-like phase that coexists with a colder liquid-like phase. With the data and code provided here, we show that a kinetic temperature difference across coexisting phases can occur even in equilibrium systems when adding generic (overdamped) self-propelled particles. In particular, we consider mixtures of overdamped active and inertial passive Brownian particles and show that when they phase separate into a dense and a dilute phase, both phases have different kinetic temperatures. Surprisingly, we find that the dense phase (liquid) cannot only be colder but also hotter than the dilute phase (gas). This effect hinges on correlated motions where active particles collectively push and heat up passive ones primarily within the dense phase. Our results answer the fundamental question if a non-equilibrium gas can be colder than a coexisting liquid and create a route to equip matter with self-organized domains of different kinetic temperatures. de_DE
dc.identifier.uri https://tudatalib.ulb.tu-darmstadt.de/handle/tudatalib/4184
dc.identifier.uri https://doi.org/10.48328/tudatalib-1389
dc.language.iso en de_DE
dc.rights.licenseGPL (https://www.gnu.org/licenses/gpl-3.0.en.html)
dc.subject Active Matter de_DE
dc.subject Computer Simulations de_DE
dc.subject Motility-Induced Phase Separation de_DE
dc.subject Active Brownian Particles de_DE
dc.subject LAMMPS de_DE
dc.subject Python de_DE
dc.subject.classification 3.22-01
dc.subject.ddc 530
dc.title Data and code: Motility-induced coexistence of a hot liquid and a cold gas de_DE
dc.type Dataset de_DE
dc.type Software de_DE
dcterms.accessRights openAccess
person.identifier.orcid 0000-0002-9619-4991
person.identifier.orcid #PLACEHOLDER_PARENT_METADATA_VALUE#
person.identifier.orcid 0000-0002-7647-6430
tuda.history.classification Version=2020-2024;310-01 Statistische Physik, Weiche Materie, Biologische Physik, Nichtlineare Dynamik
tuda.unit TUDa

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Motility-induced coexistence of a hot liquid and a cold gas