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Exchange effects in plasmas: The case of low-frequency dynamics

J. Zamanian ; Mattias Marklund (Institutionen för teknisk fysik, Kondenserade materiens teori) ; G. Brodin
Physical Review E (1539-3755). Vol. 88 (2013), 6, p. 6.
[Artikel, refereegranskad vetenskaplig]

Recently, there has been a surge of interest in nonequilibrium collective quantum models, where particle dispersion and spin are examples of effects taken into account. Here, we derive a kinetic plasma model containing fermion exchange effects. Exchange interactions are of great importance in many systems and have no classical analogy. Our model therefore constitutes a possible probe of collective quantum phenomena in other regimes. As an example, we consider the influence of the exchange effect on low-frequency dynamics, in particular ion-acoustic waves. Comparisons to related computational techniques are given and the differences are highlighted. Furthermore, we discuss the applicability of our model, its limitations, and possible extensions.

Nyckelord: ION-ACOUSTIC-WAVES, DIELECTRIC FUNCTION, KINETIC-EQUATION, QUANTUM, PLASMAS, DISPERSION, COLLISIONS, GASES, SPIN



Denna post skapades 2014-01-17. Senast ändrad 2015-01-09.
CPL Pubid: 192768

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)

Ämnesområden

Fysik

Chalmers infrastruktur