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Title

Spontaneous ordering against an external field in nonequilibrium systems

AuthorsGonzález-Avella, Juan Carlos CSIC; Cosenza, Mario G.; Eguíluz, Víctor M. CSIC ORCID ; Eguíluz, Víctor M. CSIC ORCID ; San Miguel, Maxi CSIC ORCID
Keywords[PACS] Structures and organization in complex systems
[PACS] Dynamics of social systems
[PACS] Lattice theory and statistics (Ising, Potts, etc.)
Issue DateJan-2010
PublisherInstitute of Physics Publishing
CitationNew Journal of Physics 12: 013010 (2010)
AbstractWe study the collective behavior of nonequilibrium systems subject to an external field with a dynamics characterized by the existence of non-interacting states. Aiming at exploring the generality of the results, we consider two types of models according to the nature of their state variables: (i) a vector model, where interactions are proportional to the overlap between the states, and (ii) a scalar model, where interaction depends on the distance between states. In both cases the system displays three phases: two ordered phases, one parallel to the field, and another orthogonal to the field; and a disordered phase. The phase space is numerically characterized for each model in a fully connected network. By placing the particles on a small-world network, we show that, while a regular lattice favors the alignment with the field, the presence of long-range interactions promotes the formation of the ordered.
Description5 pages, 5 figures.
Publisher version (URL)http://dx.doi.org/10.1088/1367-2630/12/1/013010
URIhttp://hdl.handle.net/10261/12862
DOI10.1088/1367-2630/12/1/013010
ISSN1367-2630
E-ISSN1367-2630
Appears in Collections:(IFISC) Artículos




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