NRG Study of an Inversion-Symmetric Interacting Model: Universal Aspects of its Quantum Conductance
| dc.creator | Freyn, Axel | |
| dc.creator | Pichard, Jean-Louis | |
| dc.date | 2009-04-06 | |
| dc.date.accessioned | 2026-07-07T13:00:48Z | |
| dc.date.available | 2026-07-07T13:00:48Z | |
| dc.description | We consider scattering of spinless fermions by an inversion-symmetric interacting model characterized by three parameters (interaction U, internal hopping t_d and coupling t_c). Mapping this spinless model onto an Anderson model with Zeeman field, we use thenumerical renormalization group for studying the particle-hole symmetric case. We show that the zero temperature limit is characterized by a line of free-fermion fixed points and a scale τ(U,t_c) of t_d for which there is perfect transmission. The quantum conductance and the low energy excitations of the model are given by universal functions of t_d/τif t_d < Γand of t_d/t_c^2 if t_d > Γ, Γ= t_c^2 being the level width of the scatterer. This universal regime becomes non-perturbative when U exceeds Γ. | |
| dc.description | 4 pages 3 figures | |
| dc.identifier | https://arxiv.org/abs/0904.0889 | |
| dc.identifier | http://arxiv.org/abs/0904.0889 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/225956 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | NRG Study of an Inversion-Symmetric Interacting Model: Universal Aspects of its Quantum Conductance | |
| dc.type | text |