Power spectrum of the current in systems with a conserved density

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dc.contributorVirginia Techen
dc.contributor.authorLeung, K. T.en
dc.contributor.departmentPhysicsen
dc.date.accessed2014-04-23en
dc.date.accessioned2014-05-07T15:37:03Zen
dc.date.available2014-05-07T15:37:03Zen
dc.date.issued1991-09en
dc.description.abstractMotivated by recent studies of model sandpiles, the power spectrum S of the current in dissipative dynamical systems with a conserved density is investigated. In contrast to self-organized criticality exhibited in certain lattice gases and noisy Langevin equations, where power laws are described by universal, simple indices, the index of S(f) for small frequency f is determined at a second-order phase transition by nontrivial critical exponents. For systems with no external drive (i.e., model B), the exact result for the dynamic exponent z is rederived. With drive (driven diffusive systems), the index is given by the exponent of anisotropies. Simulation in two dimensions yields good agreements with theoretical predictions.en
dc.description.sponsorshipNSF DMR-881765en
dc.identifier.citationLeung, K. T., "Power spectrum of the current in systems with a conserved density," Phys. Rev. B 44, 5340(R) DOI: http://dx.doi.org/10.1103/PhysRevB.44.5340en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.44.5340en
dc.identifier.issn0163-1829en
dc.identifier.urihttp://hdl.handle.net/10919/47874en
dc.identifier.urlhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.44.5340en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectdriven diffusive systemsen
dc.subjectself-organized criticalityen
dc.subjectstochastic latticeen
dc.subjectsystemsen
dc.subjectphase-transitionsen
dc.subject1/f noiseen
dc.subjectfield-theoryen
dc.subjectcritical-behavioren
dc.subjectgas modelsen
dc.subjectequilibriumen
dc.subjectdynamicsen
dc.subjectphysics, condensed matteren
dc.titlePower spectrum of the current in systems with a conserved densityen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden

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