Chu A Kwang-Hua 2001 J. Phys. B: At. Mol. Opt. Phys. 34 L711 doi:10.1088/0953-4075/34/22/102
Chu A Kwang-Hua
Show affiliationsThe Ühling-Uhlenbeck equations and the discrete velocity model are used to study the propagation of plane waves in a dilute system of Bose particles with hard-sphere interactions. The Ühling-Uhlenbeck collision sum, as it is highly nonlinear, is first linearized and then decomposed by using the plane wave assumption. We address the dispersion relations thus obtained by the relevant parameter θ or B which describes the Bose particles for the quantum analogue of the discrete Boltzmann system when B is positive (and θ = 1). The attenuation of plane waves propagating in dilute Bose gases in the low density or temperature regime shows a rather sharp change which is completely different from that in dilute Boltzmann gases.
41.20.Jb Electromagnetic wave propagation; radiowave propagation
Soft matter, liquids and polymers
Quantum gases, liquids and solids
Issue 22 (28 November 2001)
Received 15 August 2001, in final form 12 October 2001
Published 9 November 2001
Chu A Kwang-Hua 2001 J. Phys. B: At. Mol. Opt. Phys. 34 L711
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