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First displacement time of a tagged particle in a stochastic cluster in a simple exclusion process with random slow bonds. (English) Zbl 1427.60209

Summary: We consider the nearest-neighbour simple exclusion process on the one-dimensional discrete torus \(\mathbb{T}_N=\mathbb{Z}/N\mathbb{Z}\), with random rates \(c_N=\{c_{x,N}: x \in \mathbb{T}_N\}\) defined in terms of a homogeneous Poisson process on \(\mathbb{R}\) with intensity \(\lambda\). Given a realization of the Poisson process, the jump rate along the edge \(\{x,x+1\}\) is 1 if there is not any Poisson mark in \((x,x+1)\); otherwise, it is \(\lambda/N,\, \lambda \in(0,1]\). The density profile of this process with initial measure associated to an initial profile \(\rho_0: \mathbb{R} \rightarrow [0,1]\), evolves as the solution of a bounded diffusion random equation. This result follows from an appropriate quenched hydrodynamic limit. If \(\lambda=1\) then \(\rho\) is discontinuous at each Poisson mark with passage through the slow bonds, otherwise the conductance at the slow bonds decreases meaning no passage through the slow bonds in the continuum. The main results are concerned with upper and lower quenched and annealed bounds of \(T_j\), where \(T_j\) is the first displacement time of a tagged particle in a stochastic cluster of size \(j\) (the cluster is defined via specific macroscopic density profiles). It is possible to observe that when time \(t\) grows, then \(\mathbb{P}\{T_j \geq t\}\) decays quadratically in both the upper and lower bounds, and falls as slow as the presence of more Poisson marks neighbouring the tagged particle, as expected.

MSC:

60K35 Interacting random processes; statistical mechanics type models; percolation theory
60K37 Processes in random environments
82C22 Interacting particle systems in time-dependent statistical mechanics
82C44 Dynamics of disordered systems (random Ising systems, etc.) in time-dependent statistical mechanics
Full Text: DOI

References:

[1] Faggionato, A., Jara, M. and Landim, C. (2007). Hydrodynamic limit of one dimensional subdifusive exclusion processes with random conductance. Preprint. Available at arXiv:0709.0306.
[2] Franco, T., Gonçalves, P. and Neumann, A. (2013). Hydrodynamical behavior of symmetric exclusion with slow bonds. Ann. Inst. H. Poincaré Prob. Statist.49, 402-427. · Zbl 1282.60095
[3] Franco, T., Neumann, A. and Valle, G. (2011). Hydrodynamic limit for a type of exclusion process with slow bonds in dimension##img## \(d\geq 2.\) J. Appl. Prob.48, 333-351. · Zbl 1220.82076
[4] Gonçalves, P. (2008). Central limit theorem for a tagged particle in asymmetric simple exclusion. Stoch. Process. Appl.118, 474-502. · Zbl 1134.60057
[5] Jara, M. (2009). Nonequilibrium scaling limit for a tagged particle in the simple exclusion process with long jumps. Commun. Pure Appl. Math.62, 198-214. · Zbl 1153.82015
[6] Jara, M. (2011). Hydrodynamic limit of particle systems in inhomogeneous media. In Dynamics, Games and Science II (Springer Proceedings in Mathematics 2), Springer, Berlin, Heidelberg. · Zbl 1432.60091
[7] Jara, M. D. and Landim, C. (2006). Nonequilibrium central limit theorem for a tagged particle in symmetric simple exclusion. Ann. Inst. H. Poincaré Prob. Statist.42, 567-577. · Zbl 1101.60080
[8] Jara, M. D. and Landim, C. (2008). Quenched non-equilibrium central limit theorem for a tagged particle in the exclusion process with bond disorder. Ann. Inst. H. Poincaré Prob. Statist.44, 341-361. · Zbl 1195.60124
[9] Kipnis, C. and Landim, C. (1999). Scaling Limits of Interacting Particle Systems. Springer, Berlin. · Zbl 0927.60002
[10] Kipnis, C. and Varadhan, S. R. S. (1986). Central limit theorem for additive functionals of reversible markov processes and applications to simple exclusion. Commun. Math. Phys.104, 1-19. · Zbl 0588.60058
[11] Mandl, P. (1968). Analytical Tratment of One-Dimensional Markov Processes. Springer, Heidelberg. · Zbl 0179.47802
[12] Rezakhanlou, F. (1994). Propagation of chaos for symmetric simple exclusion. Commun. Pure Appl. Math.47, 943-957. · Zbl 0808.60083
[13] Seppäläinen, T. (2001). Hydrodynamic profiles for the totally asymmetric exclusion process with a slow bond. J. Statist. Phys.102, 69-96. · Zbl 1036.82018
[14] Sethuraman, S., Varadhan, S. R. S. and Yau, H.-T. (2000). Diffusive limit of a tagged particle in asymmetric simple exclusion processes. Commun. Pure Appl. Math.53, 972-1006. · Zbl 1029.60084
[15] Stone, C. (1963). Limit theorems for random walks, birth and death processes, and diffusion processes. Illinois J. Math7, 683-660. · Zbl 0118.13202
[16] Varadhan, S. R. S. (1995). Self diffusion of a tagged particle in equilibrium for asymmetric mean zero random walks with simple exclusion. Ann. Inst. H. Poincaré Prob. Statist.31, 273-285. · Zbl 0816.60093
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