Numerical observation of emergent spacetime supersymmetry at quantum criticality.
Numerical observation of emergent spacetime supersymmetry at quantum criticality.
复制标题
量子临界点涌现时空超对称性的数值观测
DOI:
10.1126/sciadv.aau1463
复制
发表时间:
2018-11
期刊:
影响因子:
13.6
通讯作者:
Yao H
中科院分区:
文献类型:
--
作者:
Li ZX;Vaezi A;Mendl CB;Yao H
Supersymmetry is shown to emerge at the superconducting quantum criticality of a lattice model realizing a single Dirac cone. No definitive evidence of spacetime supersymmetry (SUSY) that transmutes fermions into bosons and vice versa has been revealed in nature so far. Moreover, the question of whether spacetime SUSY in 2 + 1 and higher dimensions can emerge in generic lattice microscopic models remains open. Here, we introduce a lattice realization of a single Dirac fermion in 2 + 1 dimensions with attractive interactions that preserves both time-reversal and chiral symmetries. By performing sign problem–free determinant quantum Monte Carlo simulations, we show that an interacting single Dirac fermion in 2 + 1 dimensions features a superconducting quantum critical point (QCP). We demonstrate that the N=2 spacetime SUSY in 2 + 1 dimensions emerges at the superconducting QCP by showing that the fermions and bosons have identical anomalous dimensions 1/3, a hallmark of the emergent SUSY. We further show some experimental signatures that may be measured to test such emergent SUSY in candidate systems.
登录
查看更多内容
影响因子:
56.9
作者:
Berg, Erez;Metlitski, Max A.;Sachdev, Subir
通讯作者:
Sachdev, Subir
影响因子:
56.9
作者:
Grover, Tarun;Sheng, D. N.;Vishwanath, Ashvin
通讯作者:
Vishwanath, Ashvin
影响因子:
3.7
作者:
Bauer, Bela;Huijse, Liza;Schoutens, Kareljan
通讯作者:
Schoutens, Kareljan
影响因子:
3.3
作者:
Ponte, Pedro;Lee, Sung-Sik
通讯作者:
Lee, Sung-Sik
影响因子:
8.6
作者:
Chandrasekharan, S;Wiese, UJ
通讯作者:
Wiese, UJ