Front velocity and directed polymers in random medium
نویسندگان
چکیده
منابع مشابه
Directed polymers in a random medium: a variational approach
A disorder-dependent Gaussian variational approach is applied to the problem of a d dimensional polymer chain in a random medium (or potential). Two classes of variational solutions are obtained. For d < 2, these two classes may be interpreted as domain and domain wall. The critical exponent ν describing the polymer width is ν = 1 (4−d) (domain solution) or ν = 3 (d+4) (domain wall solution). T...
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ژورنال
عنوان ژورنال: Stochastic Processes and their Applications
سال: 2014
ISSN: 0304-4149
DOI: 10.1016/j.spa.2014.05.012