| Full text | |
| Author(s): |
Zhang, Gu
;
Novais, E.
;
Baranger, Harold U.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Physical Review Letters; v. 118, n. 5 FEB 2 2017. |
| Web of Science Citations: | 2 |
| Abstract | |
We show that placing a quantum system in contact with an environment can enhance non-Fermi-liquid correlations, rather than destroy quantum effects, as is typical. The system consists of two quantum dots in series with two leads; the highly resistive leads couple charge flow through the dots to the electromagnetic environment, the source of quantum noise. While the charge transport inhibits a quantum phase transition, the quantum noise reduces charge transport and restores the transition. We find a non-Fermi-liquid intermediate fixed point for all strengths of the noise. For strong noise, it is similar to the intermediate fixed point of the two-impurity Kondo model. (AU) | |
| FAPESP's process: | 14/26356-9 - Quantum phases of out of equilibrium systems in quantum information problems |
| Grantee: | Eduardo Peres Novais de Sá |
| Support Opportunities: | Regular Research Grants |