The probability density function tail of the Kardar-Parisi-Zhang equation in the strongly non-linear regime
(2016) In Journal of Physics A: Mathematical and Theoretical 49(50).- Abstract
An analytical derivation of the probability density function (PDF) tail describing the strongly correlated interface growth governed by the nonlinear Kardar-Parisi-Zhang equation is provided. The PDF tail exactly coincides with a Tracy-Widom distribution i.e. a PDF tail proportional to exp (cw2 3/2), Where w 2 is the the width of the interface. The PDF tail is computed by the instanton method in the strongly non-linear regime within the Martin-Siggia-Rose framework using a careful treatment of the non-linear interactions. In addition, the effect of spatial dimensions on the PDF tail scaling is discussed. This gives a novel approach to understand the rightmost PDF tail of the interface width distribution... (More)
An analytical derivation of the probability density function (PDF) tail describing the strongly correlated interface growth governed by the nonlinear Kardar-Parisi-Zhang equation is provided. The PDF tail exactly coincides with a Tracy-Widom distribution i.e. a PDF tail proportional to exp (cw2 3/2), Where w 2 is the the width of the interface. The PDF tail is computed by the instanton method in the strongly non-linear regime within the Martin-Siggia-Rose framework using a careful treatment of the non-linear interactions. In addition, the effect of spatial dimensions on the PDF tail scaling is discussed. This gives a novel approach to understand the rightmost PDF tail of the interface width distribution and the analysis suggests that there is no upper critical dimension.
(Less)
- author
- Anderson, Johan
and Johansson, Jonas
LU
- organization
- publishing date
- 2016-11-23
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- instanton, KPZ, non-linear system, PDF
- in
- Journal of Physics A: Mathematical and Theoretical
- volume
- 49
- issue
- 50
- article number
- 505001
- publisher
- IOP Publishing
- external identifiers
-
- scopus:84999723713
- wos:000389175800001
- ISSN
- 1751-8113
- DOI
- 10.1088/1751-8113/49/50/505001
- language
- English
- LU publication?
- yes
- id
- 1a67f570-61b4-49fb-aa76-f15a62111fa9
- date added to LUP
- 2016-12-19 09:47:13
- date last changed
- 2024-06-28 21:50:52
@article{1a67f570-61b4-49fb-aa76-f15a62111fa9, abstract = {{<p>An analytical derivation of the probability density function (PDF) tail describing the strongly correlated interface growth governed by the nonlinear Kardar-Parisi-Zhang equation is provided. The PDF tail exactly coincides with a Tracy-Widom distribution i.e. a PDF tail proportional to exp (cw<sub>2</sub> <sup>3/2</sup>), Where w <sub>2</sub> is the the width of the interface. The PDF tail is computed by the instanton method in the strongly non-linear regime within the Martin-Siggia-Rose framework using a careful treatment of the non-linear interactions. In addition, the effect of spatial dimensions on the PDF tail scaling is discussed. This gives a novel approach to understand the rightmost PDF tail of the interface width distribution and the analysis suggests that there is no upper critical dimension.</p>}}, author = {{Anderson, Johan and Johansson, Jonas}}, issn = {{1751-8113}}, keywords = {{instanton; KPZ; non-linear system; PDF}}, language = {{eng}}, month = {{11}}, number = {{50}}, publisher = {{IOP Publishing}}, series = {{Journal of Physics A: Mathematical and Theoretical}}, title = {{The probability density function tail of the Kardar-Parisi-Zhang equation in the strongly non-linear regime}}, url = {{http://dx.doi.org/10.1088/1751-8113/49/50/505001}}, doi = {{10.1088/1751-8113/49/50/505001}}, volume = {{49}}, year = {{2016}}, }