78 citations · 378 across the 16 of their papers we have counts for
16 papers
Quantum criticality in sub-Ohmic systems with three competing terms: beyond conventional spin-boson physics
Nengji Zhou, Yulong Shen, Zhe Sun
Quantum phase transitions (QPTs) in the spin-boson model with/without the rotating-wave approximation (RWA) are systematically investigated through variational calculations using a…
Quantum phase transition of sub-Ohmic spin-boson models: An approach by the multiple Davydov D2 Ansatz
Justin Tan, Nengji Zhou, Yang Zhao
The ground state properties and quantum phase transitions of sub-Ohmic spin-boson models are investigated using the multiple Davydov D2 Ansatz in conjunction with the variational p…
Numerical variational simulations of quantum phase transitions in the sub-Ohmic spin-boson model with multiple polaron ansatz
Yulong Shen, Nengji Zhou
With extensive variational simulations, dissipative quantum phase transitions in the sub-Ohmic spin-boson model are numerically studied in a dense limit of environmental modes. By…
Nonsteady dynamics at the dynamic depinning transition in the two-dimensional Gaussian random-field Ising model
Xiaohui Qian, Gaotian Yu, Nengji Zhou
With large-scale Monte Carlo simulations, we investigate the nonsteady relaxation at the dynamic depinning transition in the two-dimensional Gaussian random-field Ising model. The…
Coordinately Assisted Distillation of Quantum Coherence in Multipartite System
Huang-Qiu-Chen Wang, Qi Luo, Qi-Ping Su +4
We investigate the issue of assisted coherence distillation in the asymptotic limit (considering infinite copies of the resource states), by coordinately performing the identical l…
Unveiling quantum entanglement and correlation of sub-Ohmic and Ohmic baths for quantum phase transitions in dissipative systems
Xiaohui Qian, Zhe Sun, Nengji Zhou
By employing the spin-boson model in a dense limit of environmental modes, quantum entanglement and correlation of sub-Ohmic and Ohmic baths for dissipative quantum phase transitio…
Quantum criticality of the Ohmic spin-boson model in a high dense spectrum: symmetries,quantum fluctuations and correlations
Xiaohui Qian, Congzhi Zeng, Nengji Zhou
Study of dissipative quantum phase transitions in the Ohmic spin-boson model is numerically challenging in a dense limit of environmental modes. In this work, large-scale numerical…
Variational study of two-impurity spin-boson model with a common Ohmic bath: Ground-state phase transitions
Nengji Zhou, Yuyu Zhang, Zhiguo Lu +1
By means of a trial wave function, the multi-D ansatz, extensive variational calculations with more than ten thousand parameters have been carried out to study quantum phase tr…
Fast, accurate simulation of polaron dynamics and multidimensional spectroscopy by multiple Davydov trial states
Nengji Zhou, Lipeng Chen, Zhongkai Huang +3
By employing the Dirac-Frenkel time-dependent variational principle, we study the dynamical properties of the Holstein molecular crystal model with diagonal and off-diagonal excito…
Transient dynamics of a one-dimensional Holstein polaron under the influence of an external electric field
Zhongkai Huang, Lipeng Chen, Nengji Zhou +1
Following the Dirac-Frenkel time-dependent variational principle, transient dynamics of a one-dimensional Holstein polaron with diagonal and off-diagonal exciton-phonon coupling in…
Large-scale Monte Carlo simulations for the depinning transition in Ising-type lattice models
Lisha Sia, Xiaoyun Liao, Nengji Zhou
With the developed "extended Monte Calro" (EMC) algorithm, we have studied the depinning transition in Ising-type lattice models by extensive numerical simulations, taking the rand…
Variational dynamics of the sub-Ohmic spin-boson model on the basis of multiple Davydov states
Lu Wang, Lipeng Chen, Nengji Zhou +1
Dynamics of the sub-Ohmic spin-boson model is investigated by employing a multitude of the Davydov D trial states, also known as the multi-D Ansatz. Accuracy in dynamics si…
Polaron dynamics with a multitude of Davydov D trial states
Nengji Zhou, Zhongkai Huang, Jiangfeng Zhu +2
We propose an extension to the Davydov D Ansatz in the dynamics study of the Holstein molecular crystal model with diagonal and off-diagonal exciton-phonon coupling using the D…
Symmetry and the critical phase of the two-bath spin-boson model: Ground-state properties
Nengji Zhou, Lipeng Chen, Dazhi Xu +2
A generalized trial wave function termed as the "multi-D1 Ansatz" has been developed to study the ground state of the spin-boson model with simultaneous diagonal and off-diagonal c…
Symmetry and Explicit Marking of the Critical Phase in Two-Bath Spin-Boson Model
Yao Yao, Nengji Zhou, Javier Prior +1
The spin-boson model is a paradigm for studying decoherence, relaxation, entanglement and other effects that arise in a quantum system coupled to environmental degrees of freedom.…
Ground state properties of sub-Ohmic spin-boson model with simultaneous diagonal and off-diagonal coupling
Nengji Zhou, Lipeng Chen, Yang Zhao +2
By employing the variational approach, density matrix renormalization group (DMRG), exact diagonalization as well as symmetry and mean-field analyses, the ground state properties o…