Depinning of a polymer in a multi-interface medium
Dublin Core | PKP Metadata Items | Metadata for this Document | |
1. | Title | Title of document | Depinning of a polymer in a multi-interface medium |
2. | Creator | Author's name, affiliation, country | Francesco Caravenna; University of Padova |
2. | Creator | Author's name, affiliation, country | Nicolas Pétrélis; University of Nantes |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Polymer Model; Pinning Model; Random Walk; Renewal Theory; Localization/delocalization transition |
3. | Subject | Subject classification | 60K35; 60F05; 82B41. |
4. | Description | Abstract | In this paper we consider a model which describes a polymer chain interacting with an infinity of equi-spaced linear interfaces. The distance between two consecutive interfaces is denoted by $T = T_N$ and is allowed to grow with the size $N$ of the polymer. When the polymer receives a positive reward for touching the interfaces, its asymptotic behavior has been derived in Caravenna and Petrelis (2009), showing that a transition occurs when $T_N \approx \log N$. In the present paper, we deal with the so-called depinning case, i.e., the polymer is repelled rather than attracted by the interfaces. Using techniques from renewal theory, we determine the scaling behavior of the model for large $N$ as a function of $\{T_N\}_{N}$, showing that two transitions occur, when $T_N \approx N^{1/3}$ and when $T_N \approx \sqrt{N}$ respectively. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | Swiss Scientic Foundation, University of Padova |
7. | Date | (YYYY-MM-DD) | 2009-09-28 |
8. | Type | Status & genre | Peer-reviewed Article |
8. | Type | Type | |
9. | Format | File format | |
10. | Identifier | Uniform Resource Identifier | http://ejp.ejpecp.org/article/view/698 |
10. | Identifier | Digital Object Identifier | 10.1214/EJP.v14-698 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Journal of Probability; Vol 14 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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