Timescales of Quantum Equilibration, Dissipation and Fluctuation in Nuclear Collisions

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dc.contributor.authorSimenel, Cedric
dc.contributor.authorGodbey, K
dc.contributor.authorUmar, A S
dc.date.accessioned2021-03-18T23:20:07Z
dc.date.available2021-03-18T23:20:07Z
dc.date.issued2020
dc.date.updated2020-11-22T07:18:53Z
dc.description.abstractUnderstanding the dynamics of equilibration processes in quantum systems as well as their interplay with dissipation and fluctuation is a major challenge in quantum many-body theory. The timescales of such processes are investigated in collisions of atomic nuclei using fully microscopic approaches. Results from time-dependent Hartree-Fock and time-dependent random-phase approximation calculations are compared for 13 systems over a broad range of energies. The timescale for full mass equilibration (∼2x× 10−20s) is found to be much larger than timescales for neutron-to-proton equilibration, kinetic energy, and angular momentum dissipations which are on the order of 10−21s. Fluctuations of mass numbers in the fragments and correlations between their neutron and proton numbers build up within only a few 10−21s. This indicates that dissipation is basically not impacted by mass equilibration, but is mostly driven by the exchange of nucleons between the fragments.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0031-9007en_AU
dc.identifier.urihttp://hdl.handle.net/1885/227558
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/13640..."author can archive publisher's version/PDF" from Sherpa/Romeo site as at 19/03/2021en_AU
dc.publisherAmerican Physical Societyen_AU
dc.rights© 2020 American Physical Societyen_AU
dc.rights.licenseCreative Commons Attribution Non Commercial (CC BY-NC 4.0) licenseen_AU
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_AU
dc.sourcePhysical Review Lettersen_AU
dc.source.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.124.212504en_AU
dc.titleTimescales of Quantum Equilibration, Dissipation and Fluctuation in Nuclear Collisionsen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue21en_AU
local.contributor.affiliationSimenel, Cedric, College of Science, ANUen_AU
local.contributor.affiliationGodbey, K, Vanderbilt Universityen_AU
local.contributor.affiliationUmar, A S, Vanderbilt Universityen_AU
local.contributor.authoremailu4787848@anu.edu.auen_AU
local.contributor.authoruidSimenel, Cedric, u4787848en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor020202 - Nuclear Physicsen_AU
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciencesen_AU
local.identifier.ariespublicationa383154xPUB13549en_AU
local.identifier.citationvolume124en_AU
local.identifier.doi10.1103/PhysRevLett.124.212504en_AU
local.identifier.uidSubmittedBya383154en_AU
local.publisher.urlhttps://journals.aps.orgen_AU
local.type.statusPublished Versionen_AU

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