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Quantum information analysis of quantum phase transitions in a one-dimensional V1-V2 hard-core-boson model
Jie Ren, Xuefen Xu, Liping Gu +1
The entanglement entropy and quantum fidelity in a hard-core-boson model with nearest- and next-nearest-neighbor interactions are studied numerically. By using exact diagonalizatio…
Braid Group and Topological Phase Transitions in Nonequilibrium Stochastic Dynamics
Jie Ren, N. A. Sinitsyn
We show that distinct topological phases of the band structure of a non-Hermitian Hamiltonian can be classified with elements of the braid group. As the proof of principle, we cons…
Closed and Open System Dynamics in a Fermionic Chain with a Microscopically Specified Bath: Relaxation and Thermalization
N. Sedlmayr, J. Ren, F. Gebhard +1
We study thermalization in a one-dimensional quantum system consisting of a noninteracting fermionic chain with each site of the chain coupled to an additional bath site. Using a d…
Dynamic control of quantum geometric heat flux in a nonequilibrium spin-boson model
Tian Chen, Xiang-Bin Wang, Jie Ren
We study the quantum geometric heat flux in the nonequilibrium spin-boson model. By adopting the noninteracting-blip approximation that is able to accommodate the strong system-bat…
Analytic quantum critical points from holography
Jie Ren
We find exact, analytic solutions of the Klein-Gordon equation for a scalar field in the background of the extremal Reissner-Nordstrom-AdS_5 black hole. The Green's function near a…
Anomalous Energy Transport across Topological Insulator Superconductor Junctions
Jie Ren, Jian-Xin Zhu
We study the nonequilibrium energy transport across a topological insulator/superconductor junction, by deriving an interfacial heat current formula through scattering wave approac…