Journal
PHYSICAL REVIEW E
Volume 100, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.100.012141
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Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [303891/2013-0]
- Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro [E-26/102.760/2012, E-26/110.734/2012, E-26/102.348/2013]
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We present a numerical study of a two-lane version of the stochastic nonequilibrium model known as the totally asymmetric simple exclusion process. For such a system with open boundaries, and suitably chosen values of externally imposed particle injection (alpha) and ejection (beta) rates, spontaneous symmetry breaking can occur. We investigate the statistics and internal structure of the stochastically induced transitions or flips, which occur between opposite broken-symmetry states as the system evolves in time. From the distribution of time intervals separating successive flips, we show that the evolution of the associated characteristic times against externally imposed rates yields information regarding the proximity to a critical point in parameter space. On short timescales, we probe for the possible existence of precursor events to a flip between opposite broken-symmetry states. We study an adaptation of domain-wall theory to mimic the density reversal process associated with a flip.
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