Universal dephasing in a chiral 1D interacting fermion system
| dc.creator | Neuenhahn, Clemens | |
| dc.creator | Marquardt, Florian | |
| dc.date | 2008-06-06 | |
| dc.date | 2009-03-17 | |
| dc.date.accessioned | 2026-07-07T12:52:33Z | |
| dc.date.available | 2026-07-07T12:52:33Z | |
| dc.description | We consider dephasing by interactions in a one-dimensional chiral fermion system (e.g. a Quantum Hall edge state). For finite-range interactions, we calculate the spatial decay of the Green's function at fixed energy, which sets the contrast in a Mach-Zehnder interferometer. Using a physically transparent semiclassical ansatz, we find a power-law decay of the coherence at high energies and zero temperature (T=0), with a universal asymptotic exponent of 1, independent of the interaction strength. We obtain the dephasing rate at T>0 and the fluctuation spectrum acting on an electron. | |
| dc.description | 5 pages, 3 figures; minor changes, version as published; | |
| dc.identifier | https://arxiv.org/abs/0806.1211 | |
| dc.identifier | http://arxiv.org/abs/0806.1211 | |
| dc.identifier | Physical Review Letters 102, 046806 (2009) | |
| dc.identifier | doi:10.1103/PhysRevLett.102.046806 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/223329 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Universal dephasing in a chiral 1D interacting fermion system | |
| dc.type | text |