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Nuclear friction and quantum mechanical diffusion

Radionov, Sergey LU and Åberg, Sven LU (2005) In Physical Review C (Nuclear Physics) 71(6).
Abstract
We study dissipative properties of the motion of a slow nuclear collective variable weakly coupled to a complex quantum environment formed by the fast nucleonic degrees of freedom. The fast quantum mechanical subsystem is treated within the random matrix approach, where the complexity of the nucleonic degrees of freedom's motion can be changed by a parameter from regular to fully chaotic. Classical dynamics is assumed for the slow variable, and the equation of motion is determined from conservation of the total energy of the nuclear many-body system. We show that the macroscopic equation of motion for the collective variable is subject to a memory-dependent friction force, with a retardation defined by the chaoticity of the fast nucleonic... (More)
We study dissipative properties of the motion of a slow nuclear collective variable weakly coupled to a complex quantum environment formed by the fast nucleonic degrees of freedom. The fast quantum mechanical subsystem is treated within the random matrix approach, where the complexity of the nucleonic degrees of freedom's motion can be changed by a parameter from regular to fully chaotic. Classical dynamics is assumed for the slow variable, and the equation of motion is determined from conservation of the total energy of the nuclear many-body system. We show that the macroscopic equation of motion for the collective variable is subject to a memory-dependent friction force, with a retardation defined by the chaoticity of the fast nucleonic environment. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
71
issue
6
publisher
American Physical Society
external identifiers
  • wos:000230275800013
  • scopus:27144448148
ISSN
0556-2813
DOI
10.1103/PhysRevC.71.064304
language
English
LU publication?
yes
id
415c121d-f078-46e2-8127-3de07bfae3ae (old id 233313)
date added to LUP
2007-08-20 13:50:21
date last changed
2017-01-01 07:11:43
@article{415c121d-f078-46e2-8127-3de07bfae3ae,
  abstract     = {We study dissipative properties of the motion of a slow nuclear collective variable weakly coupled to a complex quantum environment formed by the fast nucleonic degrees of freedom. The fast quantum mechanical subsystem is treated within the random matrix approach, where the complexity of the nucleonic degrees of freedom's motion can be changed by a parameter from regular to fully chaotic. Classical dynamics is assumed for the slow variable, and the equation of motion is determined from conservation of the total energy of the nuclear many-body system. We show that the macroscopic equation of motion for the collective variable is subject to a memory-dependent friction force, with a retardation defined by the chaoticity of the fast nucleonic environment.},
  articleno    = {817},
  author       = {Radionov, Sergey and Åberg, Sven},
  issn         = {0556-2813},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Nuclear friction and quantum mechanical diffusion},
  url          = {http://dx.doi.org/10.1103/PhysRevC.71.064304},
  volume       = {71},
  year         = {2005},
}