Exchange effects in a cold plasma

Abstract

We have studied the exchange corrections to linear electrostatic wave propagation in a plasma using a quantum kinetic formalism. Specifically we have considered the zero temperature limit. In order to simplify the calculations we have focused on the long wavelength limit, i.e. wavelengths much longer than the de Broglie wavelength. For the case of ion-acoustic waves we have calculated the exchange correction both to the damping rate and the real part of the frequency. For Langmuir waves the frequency shift due to exchange effects is found. Our results are compared with the frequency shifts deduced from commonly used exchange potentials which are computed from density functional theory.

4 pages, submitted to Physics Review E

References in corpus (4)

• Physics of Strongly Magnetized Neutron Stars
• Autoresonant control of the many-electron dynamics in nonparabolic quantum wells
• A linearized kinetic theory of spin-1/2 particles in magnetized plasmas
• Exchange effects in magnetized quantum plasmas

Cited by in corpus (10)

• Spin electron acoustic soliton: Separate spin evolution of electrons with exchange interaction
• Elliptically polarized electromagnetic waves in a magnetized quantum electron-positron plasma with effects of exchange-correlation
• Quantum kinetic theories in degenerate plasmas
• Do hydrodynamic models misestimate exchange effects? Comparison with kinetic theory for electrostatic waves
• Nonlinear Landau damping of wave envelopes in a quantum plasma
• Effects of group velocity and multi-plasmon resonances on the modulation of Langmuir waves in a degenerate plasma
• Nonlinear wave damping due to multi-plasmon resonances
• Quantum kinetic theory of light-matter interactions in degenerate plasmas
• The role of the exchange-Coulomb potential in two-dimensional electron transport
• Short-scale quantum kinetic theory including spin-orbit interactions