期刊
PHYSICAL REVIEW X
卷 7, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.7.031051
关键词
-
资金
- Harvard Society of Fellows
- Gordon and Betty Moore Foundation under the EPiQS initiative [GBMF4303]
- EPSRC [EP/N028678/1]
- David and Lucile Packard Foundation
- NSF [DMR-1151208]
- U.S. Department of Energy [DE-SC0008739]
- Simons Foundation
- National Science Foundation [NSF PHY-1125915, PHY-1066293]
- Government of Canada through the Department of Innovation, Science and Economic Development
- Province of Ontario through the Ministry of Research and Innovation
- EPSRC [EP/N028678/1] Funding Source: UKRI
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1151208] Funding Source: National Science Foundation
- Engineering and Physical Sciences Research Council [EP/N028678/1] Funding Source: researchfish
The deconfined quantum critical point (QCP), separating the Neel and valence bond solid phases in a 2D antiferromagnet, was proposed as an example of (2 + 1)D criticality fundamentally different from standard Landau-Ginzburg-Wilson-Fisher criticality. In this work, we present multiple equivalent descriptions of deconfined QCPs, and use these to address the possibility of enlarged emergent symmetries in the low-energy limit. The easy-plane deconfined QCP, besides its previously discussed self-duality, is dual to N-f = 2 fermionic quantum electrodynamics, which has its own self-duality and hence may have an O(4) x Z(2)(T) symmetry. We propose several dualities for the deconfined QCP with SU(2) spin symmetry which together make natural the emergence of a previously suggested SO(5) symmetry rotating the Neel and valence bond solid orders. These emergent symmetries are implemented anomalously. The associated infrared theories can also be viewed as surface descriptions of (3 + 1)D topological paramagnets, giving further insight into the dualities. We describe a number of numerical tests of these dualities. We also discuss the possibility of pseudocritical behavior for deconfined critical points, and the meaning of the dualities and emergent symmetries in such a scenario.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据