Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 123601 |
| Seitenumfang | 5 |
| Fachzeitschrift | Physical Review Letters |
| Jahrgang | 124 |
| Ausgabenummer | 12 |
| Publikationsstatus | Veröffentlicht - 23 März 2020 |
Abstract
We explore the ground-state physics of two-dimensional spin-1/2 U(1) quantum link models, one of the simplest nontrivial lattice gauge theories with fermionic matter within experimental reach for quantum simulations. Whereas in the large mass limit we observe Neél-like vortex-antivortex and striped crystalline phases, for small masses there is a transition from the striped phases into a disordered phase whose properties resemble those at the Rokhsar-Kivelson point of the quantum dimer model. This phase is characterized on ladders by boundary Haldane-like properties, such as vanishing parity and finite string ordering. Moreover, from studies of the string tension between gauge charges, we find that, whereas the striped phases are confined, the novel disordered phase present clear indications of being deconfined. Our results open exciting perspectives of studying highly nontrivial physics in quantum simulators, such as spin-liquid behavior and confinement-deconfinement transitions, without the need of explicitly engineering plaquette terms.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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in: Physical Review Letters, Jahrgang 124, Nr. 12, 123601, 23.03.2020.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Deconfining Disordered Phase in Two-Dimensional Quantum Link Models
AU - Cardarelli, Lorenzo
AU - Greschner, Sebastian
AU - Santos, Luis
N1 - Funding information: We thank Alessio Celi and Marcello Dalmonte for enlightening discussions. S. G. acknowledges support by the Swiss National Science Foundation under Division II. L. C. and L. S. thank the support of the German Research Foundation Deutsche Forschungsgemeinschaft (Project No. SA 1031/10-1 and the Excellence Cluster QuantumFrontiers). Simulations were carried out on the cluster system at the Leibniz University of Hannover and the Baobab cluster of the University of Geneva.
PY - 2020/3/23
Y1 - 2020/3/23
N2 - We explore the ground-state physics of two-dimensional spin-1/2 U(1) quantum link models, one of the simplest nontrivial lattice gauge theories with fermionic matter within experimental reach for quantum simulations. Whereas in the large mass limit we observe Neél-like vortex-antivortex and striped crystalline phases, for small masses there is a transition from the striped phases into a disordered phase whose properties resemble those at the Rokhsar-Kivelson point of the quantum dimer model. This phase is characterized on ladders by boundary Haldane-like properties, such as vanishing parity and finite string ordering. Moreover, from studies of the string tension between gauge charges, we find that, whereas the striped phases are confined, the novel disordered phase present clear indications of being deconfined. Our results open exciting perspectives of studying highly nontrivial physics in quantum simulators, such as spin-liquid behavior and confinement-deconfinement transitions, without the need of explicitly engineering plaquette terms.
AB - We explore the ground-state physics of two-dimensional spin-1/2 U(1) quantum link models, one of the simplest nontrivial lattice gauge theories with fermionic matter within experimental reach for quantum simulations. Whereas in the large mass limit we observe Neél-like vortex-antivortex and striped crystalline phases, for small masses there is a transition from the striped phases into a disordered phase whose properties resemble those at the Rokhsar-Kivelson point of the quantum dimer model. This phase is characterized on ladders by boundary Haldane-like properties, such as vanishing parity and finite string ordering. Moreover, from studies of the string tension between gauge charges, we find that, whereas the striped phases are confined, the novel disordered phase present clear indications of being deconfined. Our results open exciting perspectives of studying highly nontrivial physics in quantum simulators, such as spin-liquid behavior and confinement-deconfinement transitions, without the need of explicitly engineering plaquette terms.
UR - http://www.scopus.com/inward/record.url?scp=85083544682&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1910.12829
DO - 10.48550/arXiv.1910.12829
M3 - Article
C2 - 32281853
AN - SCOPUS:85083544682
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 12
M1 - 123601
ER -