Abstract
We study slow relaxation processes in a point vortex model for two-dimensional pure electron plasma in the strongly magnetized limit. By numerical simulations, we show that the system settles down to a final state via a slow relaxation after it relaxes into a quasi-stationary state via an initial fast relaxation. By analyzing simulation data, we demonstrate that (i) the system relaxes into the maximum one-body entropy state after the slow relaxation, (ii) the time scale of the slow relaxation in the unit of bulk rotation time increases linearly with the number of electrons, and (iii) each electron undergoes a superdiffusive motion during the slow relaxation process. However, the time scale in which each electron diffuses over the system size turns out to be much shorter than that of the slow relaxation; this suggests that the correlation among the superdiffusive trajectories is important in the slow relaxation process.
| Original language | English |
|---|---|
| Article number | 074001 |
| Journal | journal of the physical society of japan |
| Volume | 76 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 1 2007 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Cite this
Slow relaxation in two-dimensional electron plasma under strong magnetic field. / Kawahara, Ryo; Nakanishi, Hiizu.
In: journal of the physical society of japan, Vol. 76, No. 7, 074001, 01.07.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Slow relaxation in two-dimensional electron plasma under strong magnetic field
AU - Kawahara, Ryo
AU - Nakanishi, Hiizu
PY - 2007/7/1
Y1 - 2007/7/1
N2 - We study slow relaxation processes in a point vortex model for two-dimensional pure electron plasma in the strongly magnetized limit. By numerical simulations, we show that the system settles down to a final state via a slow relaxation after it relaxes into a quasi-stationary state via an initial fast relaxation. By analyzing simulation data, we demonstrate that (i) the system relaxes into the maximum one-body entropy state after the slow relaxation, (ii) the time scale of the slow relaxation in the unit of bulk rotation time increases linearly with the number of electrons, and (iii) each electron undergoes a superdiffusive motion during the slow relaxation process. However, the time scale in which each electron diffuses over the system size turns out to be much shorter than that of the slow relaxation; this suggests that the correlation among the superdiffusive trajectories is important in the slow relaxation process.
AB - We study slow relaxation processes in a point vortex model for two-dimensional pure electron plasma in the strongly magnetized limit. By numerical simulations, we show that the system settles down to a final state via a slow relaxation after it relaxes into a quasi-stationary state via an initial fast relaxation. By analyzing simulation data, we demonstrate that (i) the system relaxes into the maximum one-body entropy state after the slow relaxation, (ii) the time scale of the slow relaxation in the unit of bulk rotation time increases linearly with the number of electrons, and (iii) each electron undergoes a superdiffusive motion during the slow relaxation process. However, the time scale in which each electron diffuses over the system size turns out to be much shorter than that of the slow relaxation; this suggests that the correlation among the superdiffusive trajectories is important in the slow relaxation process.
UR - http://www.scopus.com/inward/record.url?scp=34547470104&partnerID=8YFLogxK
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U2 - 10.1143/JPSJ.76.074001
DO - 10.1143/JPSJ.76.074001
M3 - Article
AN - SCOPUS:34547470104
VL - 76
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 7
M1 - 074001
ER -