Spectral scrambling in Coulomb-blockade quantum dots
| dc.creator | Alhassid, Y. | |
| dc.creator | Gefen, Yuval | |
| dc.date | 2001-01-31 | |
| dc.date | 2001-08-22 | |
| dc.date.accessioned | 2026-07-07T02:40:14Z | |
| dc.date.available | 2026-07-07T02:40:14Z | |
| dc.description | We study the fluctuations of an energy level as a function of the number of electrons $m$ added to a Coulomb-blockade quantum dot. A microscopic calculation in the limit of Koopmans' theorem predicts that the standard deviation of these fluctuations behaves as $\sqrt{m}$ in the absence of surface charge but is linear in $m$ when the effect of a surface charge in a finite geometry is included. The microscopic results are compared to a parametric random-matrix approach. We estimate the number of electrons it takes to scramble the spectrum completely in terms of the interaction strength, the dimensionless Thouless conductance, and the symmetry class. | |
| dc.description | 13 pages, RevTex, significantly revised and includes new results | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0101461 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0101461 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/17308 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Spectral scrambling in Coulomb-blockade quantum dots | |
| dc.type | text |