Damping of zero sound in liquid 3He

Thakur, J. S. ; Pathak, K. N. (1982) Damping of zero sound in liquid 3He Solid State Communications, 41 (11). pp. 863-865. ISSN 0038-1098

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0038-1098(82)91266-2


An expression for the density response function has been derived using Green's function method. It incorporates the mechanism of the decay of a density mode into two particle-two hole excitations. The width of the zero sound is found to vary as q2 for small q with its numerical coefficient in agreement with that estimated by Landau.

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