156 citations · 668 across the 23 of their papers we have counts for
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cond-mat.str-el2013★ 71 cited
Universal Conductivity in a Two-Dimensional Superfluid-to-Insulator Quantum Critical System
Kun Chen, Longxiang Liu, Youjin Deng +2
We compute the universal conductivity of the (2+1)-dimensional XY universality class, which is realized for a superfluid-to-Mott insulator quantum phase transition at constant dens…
cond-mat.stat-mech2013★ 41 cited
Universal Properties of the Higgs Resonance in (2+1)-Dimensional U(1) Critical Systems
Kun Chen, Longxiang Liu, Youjin Deng +2
We present spectral functions for the magnitude squared of the order parameter in the scaling limit of the two-dimensional superfluid to Mott insulator quantum phase transition at…
cond-mat.str-el2013★ 120 cited
Deconfined criticality flow in the Heisenberg model with ring-exchange interactions
Kun Chen, Yuan Huang, Youjin Deng +3
Quantum transition points in the J -Q model---the test bed of the deconfined critical point theory---and the SU(2)-symmetric discrete noncompact CP^1 representation of the deconfin…