أعرض تسجيلة المادة بشكل مبسط

dc.creator Muñoz Miguel A.
dc.creator Santos Francisco de los
dc.creator Achahbar Abdelfattah
dc.date 2003
dc.date.accessioned 2013-06-01T10:27:34Z
dc.date.available 2013-06-01T10:27:34Z
dc.date.issued 2013-06-01
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332003000300005
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2003&volume=33&issue=3&spage=443
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/8183
dc.description A host of spatially extended systems, both in physics and in other disciplines, are well described at a coarse-grained scale by a Langevin equation with multiplicative-noise. Such systems may exhibit nonequilibrium phase transitions, which can be classified into universality classes. Here we study in detail one such class that can be mapped into a Kardar-Parisi-Zhang (KPZ) interface equation with a positive (negative) non-linearity in the presence of a bounding lower (upper) wall. The wall limits the possible values taken by the height variable, introducing a lower (upper) cut-off, and induces a phase transition between a pinned (active) and a depinned (absorbing) phase. This transition is studied here using mean field and field theoretical arguments, as well as from a numerical point of view. Its main properties and critical features, as well as some challenging theoretical difficulties, are reported. The differences with other multiplicative noise and bounded-KPZ universality classes are stressed, and the effects caused by the introduction of "attractive" walls, relevant in some physical contexts, are also analyzed.
dc.publisher Sociedade Brasileira de Física
dc.source Brazilian Journal of Physics
dc.title Critical behavior of a bounded Kardar-Parisi-Zhang equation


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أعرض تسجيلة المادة بشكل مبسط