Muirhead, S. and Pymar, Richard and Sidorova, N. (2017) Delocalising the Parabolic Anderson Model through partial duplication of the potential. Probability Theory and Related Fields 171 (3-4), pp. 917-979. ISSN 0178-8051.
![[img]](https://eprints.bbk.ac.uk/style/images/fileicons/text.png) |
Text
Delocalising the PAM.pdf - Author's Accepted Manuscript Restricted to Repository staff only Download (511kB) | Request a copy |
|
|
Text
19506.pdf - Published Version of Record Available under License Creative Commons Attribution. Download (944kB) | Preview |
Abstract
The parabolic Anderson model on Z^d with i.i.d. potential is known to completely localise if the distribution of the potential is sufficiently heavy-tailed at infinity. In this paper we investigate a modification of the model in which the potential is partially duplicated in a symmetric way across a plane through the origin. In the case of potential distribution with polynomial tail decay, we exhibit a surprising phase transition in the model as the decay exponent varies. For large values of the exponent the model completely localises as in the i.i.d. case. By contrast, for small values of the exponent we show that the model may delocalise. More precisely, we show that there is an event of non-negligible probability on which the solution has non-negligible mass on two sites.
Metadata
| Item Type: | Article |
|---|---|
| Additional Information: | The final publication is available at Springer via the link above. |
| School: | Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences |
| Depositing User: | Richard Pymar |
| Date Deposited: | 04 Sep 2017 13:07 |
| Last Modified: | 09 Aug 2023 12:42 |
| URI: | https://eprints.bbk.ac.uk/id/eprint/19506 |
Statistics
Additional statistics are available via IRStats2.
Archive Staff Only (login required)
