Non-universal critical aging scaling in three-dimensional Heisenberg antiferromagnets

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dc.contributor.authorNandi, Riyaen
dc.contributor.authorTäuber, Uwe C.en
dc.contributor.departmentCenter for Soft Matter and Biological Physicsen
dc.contributor.departmentPhysicsen
dc.date.accessioned2018-12-27T18:53:36Zen
dc.date.available2018-12-27T18:53:36Zen
dc.date.issued2018-09-20en
dc.date.updated2018-12-27T18:53:35Zen
dc.description.abstractWe numerically investigate the stationary and non-equilibrium critical dynamics in three-dimensional isotropic Heisenberg antiferromagnets. Since the non-conserved staggered magnetization couples dynamically to the conserved magnetization density, we employ a hybrid simulation algorithm that combines reversible spin precession with relaxational Kawasaki spin exchange processes. We measure the dynamic critical exponent and identify a suitable intermediate time window to obtain the aging scaling exponents. Our results support an earlier renormalization group prediction: While the critical aging collapse exponent assumes a universal value, the associated temporal decay exponent in the two-time spin autocorrelation function depends on the initial distribution of the conserved fields; here, specifically on the width of the initial spin orientation distribution.en
dc.description.notes5 pages, 4 figuresen
dc.identifier.orcidTauber, Uwe [0000-0001-7854-2254]en
dc.identifier.urihttp://hdl.handle.net/10919/86527en
dc.relation.urihttp://arxiv.org/abs/1809.07799v1en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcond-mat.stat-mechen
dc.titleNon-universal critical aging scaling in three-dimensional Heisenberg antiferromagnetsen
dc.typeArticleen
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/Physicsen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen

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