The Library
Vortex stretching as a mechanism for quantum kinetic energy decay
Tools
Kerr, Robert M. (Robert McDougall) (2011) Vortex stretching as a mechanism for quantum kinetic energy decay. Physical Review Letters, Vol.106 (No.22). Article: 224501. doi:10.1103/PhysRevLett.106.224501 ISSN 0031-9007.
|
PDF
WRAP_Kerr_0270006-ma-090911-gpantprl_09.pdf - Accepted Version - Requires a PDF viewer. Download (807Kb) |
Official URL: http://dx.doi.org/10.1103/PhysRevLett.106.224501
Abstract
A pair of perturbed anti-parallel quantum vortices, simulated using the three-dimensional Gross-Pitaevskii equations, is shown to be unstable to vortex stretching. This results in kinetic energy K∇ψ being converted into interaction energy EI and eventually local kinetic energy depletion that is similar to energy decay in a classical uid, even though the governing equations are Hamiltonian and energy conserving. The intermediate stages include: the generation of vortex waves, their deepening, multiple reconnections, the emission of vortex rings and phonons and the creation of an approximately -5/3 kinetic energy spectrum at high wavenumbers. All the wave generation and reconnection steps follow from interactions between the two original vortices, unlike the self- interactions in vortex wave models. A four vortex example is given to demonstrate that some of these steps might be general.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Mathematics |
||||
Library of Congress Subject Headings (LCSH): | Quantum theory, Topological defects (Physics), Superfluidity | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 1 June 2011 | ||||
Dates: |
|
||||
Volume: | Vol.106 | ||||
Number: | No.22 | ||||
Number of Pages: | 4 | ||||
Page Range: | Article: 224501 | ||||
DOI: | 10.1103/PhysRevLett.106.224501 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 17 December 2015 | ||||
Date of first compliant Open Access: | 17 December 2015 | ||||
Funder: | Leverhulme Trust (LT), European Union (EU) | ||||
Grant number: | F/00215/AC (LT) |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year