Entanglement scaling in critical two-dimensional fermionic and bosonic systems
| dc.creator | Barthel, Thomas | |
| dc.creator | Chung, Ming-Chiang | |
| dc.creator | Schollwoeck, Ulrich | |
| dc.date | 2006-02-03 | |
| dc.date | 2006-02-04 | |
| dc.date.accessioned | 2026-07-07T07:01:29Z | |
| dc.date.available | 2026-07-07T07:01:29Z | |
| dc.description | We relate the reduced density matrices of quadratic bosonic and fermionic models to their Green's function matrices in a unified way and calculate the scaling of bipartite entanglement of finite systems in an infinite universe exactly. For critical fermionic 2D systems at T=0, two regimes of scaling are identified: generically, we find a logarithmic correction to the area law with a prefactor dependence on the chemical potential that confirms earlier predictions based on the Widom conjecture. If, however, the Fermi surface of the critical system is zero-dimensional, we find an area law with a sublogarithmic correction. For a critical bosonic 2D array of coupled oscillators at T=0, our results show that entanglement follows the area law without corrections. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0602077 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0602077 | |
| dc.identifier | Phys. Rev. A 74, 022329 (2006) | |
| dc.identifier | doi:10.1103/PhysRevA.74.022329 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/108286 | |
| dc.subject | Statistical Mechanics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Quantum Physics | |
| dc.title | Entanglement scaling in critical two-dimensional fermionic and bosonic systems | |
| dc.type | text |