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Início
Agenda |
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- 07 de outubro de 2015
16h30
F-210 -
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José Abel Hoyos
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IFSC/USP
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Infinite-noise
criticality: Nonequilibrium phase transitions in fluctuating
environments
The
contact process model of nonequilibrium phase transitions into
absorbing states are widely used to study turbulent liquid
crystals, driven suspensions, superconducting vortex dynamics,
bacteria colony biofilms among other systems. We study this
transition in the presence of a time-varying environmental noise
and show that such temporal disorder gives rise to a distinct
class of exotic “infinite-noise” critical points at which
the effective noise amplitude diverges on long time scales. This
leads to enormous density fluctuations characterized by an
infinitely broad probability distribution at criticality. -
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