182 citations · 350 across the 11 of their papers we have counts for
11 papers
Boundary Criticality of Complex Conformal Field Theory: A Case Study in the Non-Hermitian 5-State Potts Model
Yin Tang, Qianyu Liu, Qicheng Tang +1
Conformal fields with boundaries give rise to rich critical phenomena that can reveal information about the underlying conformality. While most existing studies focus on Hermitian…
Reclaiming the Lost Conformality in a non-Hermitian Quantum 5-state Potts Model
Yin Tang, Han Ma, Qicheng Tang +2
Conformal symmetry, emerging at critical points, can be lost when renormalization group fixed points collide. Recently, it was proposed that after collisions, real fixed points tra…
Universal entanglement signatures of interface conformal field theories
Qicheng Tang, Zixia Wei, Yin Tang +2
An interface connecting two distinct conformal field theories hosts rich critical behaviors. In this work, we investigate the entanglement properties of such critical interface the…
Thermal Correction to Entanglement Spectrum for Conformal Field Theories
Yin Tang, Qicheng Tang, W. Zhu
We calculate the thermal correction to the entanglement spectrum for separating a single interval of two dimensional conformal field theories. Our derivation is a direct extension…
Entanglement Entropy of D Quantum Critical Points with Quenched Disorder: Dimensional Reduction Approach
Qicheng Tang, W. Zhu
A formidable perspective in understanding quantum criticality of a given many-body system is through its entanglement contents. Until now, most progress are only limited to the dis…
Quantum criticality in the nonunitary dynamics of -dimensional free fermions
Qicheng Tang, Xiao Chen, W. Zhu
We explore the nonunitary dynamics of -dimensional free fermions and show that the obtained steady state is critical regardless the strength of the nonunitary evolution. Num…
Critical Scaling Behaviors of Entanglement Spectra
Qicheng Tang, W. Zhu
We investigate the evolution of entanglement spectra under a global quantum quench from a short-range correlated state to the quantum critical point. Motivated by the conformal map…
Measurement-induced phase transition: A case study in the non-integrable model by density-matrix renormalization group calculations
Qicheng Tang, W. Zhu
We study the effect of local projective measurements on the quantum quench dynamics. As a concrete example, a one-dimensional Bose-Hubbard model is simulated by the matrix product…
Out-of-time-order correlators and quantum phase transitions in the Rabi and Dicke model
Zheng-Hang Sun, Jia-Qi Cai, Qi-Cheng Tang +2
The out-of-time-order correlators (OTOCs) is used to study the quantum phase transitions (QPTs) between the normal phase and the superradiant phase in the Rabi and few-body Dicke m…
Influence of hydrogen on electron-phonon coupling and intrinsic electrical resistivity in zirconium: a first-principles study
Qicheng Tang, L. A. Svyatkin, I. P. Chernov
The paper presents the first-principle calculation of the electron-phonon coupling and the temperature dependence of the intrinsic electrical resistivity of the zirconium-hydrogen…
Enhancing the geometric quantum discord in the Heisenberg {\it XX} chain by Dzyaloshinsky-Moriya interaction
Jia-Min Gong, Qi Tang, Yu-Hang Sun +1
We studied the trance distance, the Hellinger distance, and the Bures distance geometric quantum discords (GQDs) for a two-spin Heisenberg {\it XX} chain with the Dzyaloshinsky-Mor…