Metastability in a condensing zero-range process in the thermodynamic limit
Metastability in a condensing zero-range process in the thermodynamic limit
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热力学极限内冷凝零范围过程的亚稳定性
DOI:
10.1007/s00440-016-0728-y
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发表时间:
2016
影响因子:
2
通讯作者:
Armendáriz I
中科院分区:
文献类型:
--
作者:
Armendáriz I
Zero-range processes with decreasing jump rates are known to exhibit condensation, where a finite fraction of all particles concentrates on a single lattice site when the total density exceeds a critical value. We study such a process on a one-dimensional lattice with periodic boundary conditions in the thermodynamic limit with fixed, super-critical particle density. We show that the process exhibits metastability with respect to the condensate location, i.e. the suitably accelerated process of the rescaled location converges to a limiting Markov process on the unit torus. This process has stationary, independent increments and the rates are characterized by the scaling limit of capacities of a single random walker on the lattice. Our result extends previous work for fixed lattices and diverging density [In: Beltran and Landim, Probab Theory Relat Fields 152(3–4):781–807, 2012], and we follow the martingale approach developed there and in subsequent publications. Besides additional technical difficulties in estimating error bounds for transition rates, the thermodynamic limit requires new estimates for equilibration towards a suitably defined distribution in metastable wells, corresponding to a typical set of configurations with a particular condensate location. The total exit rates from individual wells turn out to diverge in the limit, which requires an intermediate regularization step using the symmetries of the process and the regularity of the limit generator. Another important novel contribution is a coupling construction to provide a uniform bound on the exit rates from metastable wells, which is of a general nature and can be adapted to other models.
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影响因子:
1.4
作者:
In'es Armend'ariz;S. Grosskinsky;M. Loulakis
通讯作者:
In'es Armend'ariz;S. Grosskinsky;M. Loulakis
影响因子:
2.3
作者:
B. Gois;C. Landim
通讯作者:
C. Landim
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
J. Drouffe;C. Godrèche;F. Camia
通讯作者:
F. Camia
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
R. Fernández;F. Manzo;F. Nardi;E. Scoppola
通讯作者:
E. Scoppola
影响因子:
1.4
作者:
A. Gaudilliere;D. Hollander;F. Nardi;F. Nardi;E. Olivieri;E. Scoppola
通讯作者:
E. Scoppola