Direct equivalence between quantum phase transition phenomena in radiation-matter and magnetic systems: scaling of entanglement
| dc.creator | Reslen, José | |
| dc.creator | Quiroga, Luis | |
| dc.creator | Johnson, Neil F. | |
| dc.date | 2004-06-28 | |
| dc.date | 2005-01-13 | |
| dc.date.accessioned | 2026-07-07T02:58:52Z | |
| dc.date.available | 2026-07-07T02:58:52Z | |
| dc.description | We show that the quantum phase transition arising in a standard radiation-matter model (Dicke model) belongs to the same universality class as the infinitely-coordinated, transverse field XY model. The effective qubit-qubit exchange interaction is shown to be proportional to the square of the qubit-radiation coupling. A universal finite-size scaling is derived for the corresponding two-qubit entanglement (concurrence) and a size-consistent effective Hamiltonian is proposed for the qubit subsystem. | |
| dc.description | 4 pages, 3 figures. Minor changes. Published version | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0406674 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0406674 | |
| dc.identifier | Europhysics Letters 69, 8 (2005) | |
| dc.identifier | doi:10.1209/epl/i2004-10313-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/24288 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Statistical Mechanics | |
| dc.subject | Quantum Physics | |
| dc.title | Direct equivalence between quantum phase transition phenomena in radiation-matter and magnetic systems: scaling of entanglement | |
| dc.type | text |