Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1998-12-03
Phys.Rev.Lett. 82, 4894 (1999)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.82.4894
The decay of a quasiparticle in a confined geometry, resulting from electron-electron interactions, has been mapped onto the single-electron problem of diffusion on a Cayley tree by Altshuler et al. [Phys.Rev.Lett. 78, 2803 (1997)]. We study an alternative model, that captures the strong correlations between the self-energies of different excitations with the same number of quasiparticles. The model has a recursion relation for the single-particle density of states that is markedly different from the Cayley tree. It remains tractable enough that sufficiently large systems can be studied to observe the localization transition in Fock space predicted by Altshuler et al.
Beenakker C. W. J.
Leyronas Xavier
Tworzydlo Jakub
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