Two interacting quasiparticles above the Fermi sea
arXiv:cond-mat/9612006 · doi:10.1103/PhysRevLett.78.4986
Abstract
We study numerically the interaction and disorder effects for two quasiparticles in two and three dimensions. The dependence of the interaction-induced Breit-Wigner width on the excitation energy above the Fermi level, the disorder strength and the system size is determined. A regime is found where the width is practically independent of the excitation energy. The results allow to estimate the two quasiparticle mobility edge.
revtex, 4 pages, 4 figures
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