Abstract
Recent progress with regard to the numerical simulation of fluctuations in nuclear dynamics is reported. Cluster formation in unstable nuclear matter is studied within the framework of a Boltzmann-Langevin equation developed to describe large amplitude fluctuations. Through the Fourier analysis of the fluctuating nuclear density in coordinate space, the onset of the clusterization is related to the dispersion relation of harmonic density oscillations. This detailed study on the simple two-dimensional case demonstrates the validity of the general approach. It is also shown, how the inclusion of fluctuations implies a description in terms of ensemble of trajectories and it is discussed why the presence of a stochastic term may cure the intrinsic unpredictability of deterministic theories (such as mean-field approximation) in presence of instabilities and/or chaos. (author) 8 refs., 3 figs.
Burgio, G F;
Chomaz, Ph;
[1]
Randrup, J
[1]
- California Univ., Berkeley, CA (United States). Lawrence Berkeley Lab.
Citation Formats
Burgio, G F, Chomaz, Ph, and Randrup, J.
Fluctuations, dynamical instabilities and clusterization processes.
France: N. p.,
1992.
Web.
Burgio, G F, Chomaz, Ph, & Randrup, J.
Fluctuations, dynamical instabilities and clusterization processes.
France.
Burgio, G F, Chomaz, Ph, and Randrup, J.
1992.
"Fluctuations, dynamical instabilities and clusterization processes."
France.
@misc{etde_10144947,
title = {Fluctuations, dynamical instabilities and clusterization processes}
author = {Burgio, G F, Chomaz, Ph, and Randrup, J}
abstractNote = {Recent progress with regard to the numerical simulation of fluctuations in nuclear dynamics is reported. Cluster formation in unstable nuclear matter is studied within the framework of a Boltzmann-Langevin equation developed to describe large amplitude fluctuations. Through the Fourier analysis of the fluctuating nuclear density in coordinate space, the onset of the clusterization is related to the dispersion relation of harmonic density oscillations. This detailed study on the simple two-dimensional case demonstrates the validity of the general approach. It is also shown, how the inclusion of fluctuations implies a description in terms of ensemble of trajectories and it is discussed why the presence of a stochastic term may cure the intrinsic unpredictability of deterministic theories (such as mean-field approximation) in presence of instabilities and/or chaos. (author) 8 refs., 3 figs.}
place = {France}
year = {1992}
month = {Dec}
}
title = {Fluctuations, dynamical instabilities and clusterization processes}
author = {Burgio, G F, Chomaz, Ph, and Randrup, J}
abstractNote = {Recent progress with regard to the numerical simulation of fluctuations in nuclear dynamics is reported. Cluster formation in unstable nuclear matter is studied within the framework of a Boltzmann-Langevin equation developed to describe large amplitude fluctuations. Through the Fourier analysis of the fluctuating nuclear density in coordinate space, the onset of the clusterization is related to the dispersion relation of harmonic density oscillations. This detailed study on the simple two-dimensional case demonstrates the validity of the general approach. It is also shown, how the inclusion of fluctuations implies a description in terms of ensemble of trajectories and it is discussed why the presence of a stochastic term may cure the intrinsic unpredictability of deterministic theories (such as mean-field approximation) in presence of instabilities and/or chaos. (author) 8 refs., 3 figs.}
place = {France}
year = {1992}
month = {Dec}
}