64 citations · 274 across the 14 of their papers we have counts for
14 papers
Deconfined Boundary Phase Transition of a Quantum Critical Heisenberg Model
Chengxiang Ding, Long Zhang
We investigate the boundary phases of a (2+1)-dimensional quantum critical Heisenberg model with a dangling spin chain. By introducing a multispin -term along the boundary, we d…
Wilson Surface One-Point Functions: A Case Study
Long-Fu Zhang, Jun-Bao Wu
We compute holographic one-point functions for Wilson surfaces in the case of a toroidal surface operator. Compared to the cases of a planar or spherical surface operator, these on…
Universal Quench Dynamics of an Open Quantum System
Chengxiang Ding, Long Zhang
Taking the quantum Kitaev chain as an example, we have studied the universal dynamical behaviors resulting from quantum criticality under the condition of environmental temperature…
Emergent conformal boundaries from finite-entanglement scaling in matrix product states
Rui-Zhen Huang, Long Zhang, Andreas M. Läuchli +3
The use of finite entanglement scaling with matrix product states (MPS) has become a crucial tool for studying 1+1d critical lattice theories, especially those with emergent confor…
Sublattice extraordinary-log phase and new special point of the antiferromagnetic Potts model
Li-Ru Zhang, Chengxiang Ding, Wanzhou Zhang +1
We study the surface criticality of a three-dimensional classical antiferromagnetic Potts model, whose bulk critical behaviors belongs to the XY model because of emergent O(2) symm…
Surface criticality of antiferromagnetic Potts model
Li-Ru Zhang, Chengxiang Ding, Long Zhang +1
We study the three-state antiferromagnetic Potts model on the simple-cubic lattice, paying attention to the surface critical behaviors. When the nearest neighboring interactions of…
Persistent Corner Spin Mode at the Quantum Critical Point of a Plaquette Heisenberg Model
Yining Xu, Chen Peng, Zijian Xiong +1
Gapless edge states are the hallmark of a large class of topological states of matter. Recently, intensive research has been devoted to understanding the physical properties of the…
Exotic surface behaviors induced by geometrical settings of the two-dimensional dimerized quantum XXZ model
WenJing Zhu, Chengxiang Ding, Long Zhang +1
We study the surface behavior of the two-dimensional columnar dimerized quantum antiferromagnetic XXZ model with easy-plane anisotropy, with particular emphasis on the surface crit…
Conformal Boundary Conditions of Symmetry-Enriched Quantum Critical Spin Chains
Xue-Jia Yu, Rui-Zhen Huang, Hong-Hao Song +3
Some quantum critical states cannot be smoothly deformed into each other without either crossing some multicritical points or explicitly breaking certain symmetries even if they be…
Special Transition and Extraordinary Phase on the Surface of a Two-Dimensional Quantum Heisenberg Antiferromagnet
Chengxiang Ding, Wenjing Zhu, Wenan Guo +1
Continuous phase transitions exhibit richer critical phenomena on the surface than in the bulk, because distinct surface universality classes can be realized at the same bulk criti…
Surface critical behaviors of coupled Haldane chains
Wenjing Zhu, Chengxiang Ding, Long Zhang +1
The special surface transition at (2+1)-dimensional quantum critical point is precluded in corresponding classical critical point. The mechanism of such behavior which is only foun…
Finite-Size Scaling Theory at a Self-Dual Quantum Critical Point
Long Zhang, Chengxiang Ding
The nondivergence of the generalized Grüneisen ratio (GR) at a quantum critical point (QCP) has been proposed to be a universal thermodynamic signature of self-duality. In this wor…
Universal Thermodynamic Signature of Self-dual Quantum Critical Points
Long Zhang
Self-duality is an algebraic structure of certain critical theories, which is not encoded in the scaling dimensions and critical exponents. In this work, a universal thermodynamic…
Engineering Surface Critical Behavior of (2+1)-Dimensional O(3) Quantum Critical Points
Chengxiang Ding, Long Zhang, Wenan Guo
Surface critical behavior (SCB) refers to the singularities of physical quantities on the surface at the bulk phase transition. It is closely related to and even richer than the bu…