Localization Transition for Polymers in Poissonian Medium
Localization Transition for Polymers in Poissonian Medium
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DOI:
10.1007/s00220-013-1744-8
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发表时间:
2012-06
影响因子:
2.4
通讯作者:
F. Comets;N. Yoshida
中科院分区:
文献类型:
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作者:
F. Comets;N. Yoshida
We study a model of directed polymers in random environment in dimension 1 +d, given by a Brownian motion in a Poissonian potential. We study the effect of the density and the strength of inhomogeneities, respectively the intensity parameterνof the Poisson field and the temperature inverseβ. Our results are: (i) fine information on the phase diagram, with quantitative estimates on the critical curve; (ii) pathwise localization at low temperature and/or large density; (iii) complete localization in a favourite corridor for largeνβ2and boundedβ.