检索结果-南通市图书馆

Phase diagram and quench dynamics of a periodically drivenhaldane model

Chinese Physics B 2024年第9期33卷 317-325页

作者： Minxuan Ren Han Yang Mingyuan Sun School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China

We investigate a periodically driven haldane model subjected to a two-stage driving scheme in the form of a step *** using the Floquet theory,we obtain the topological phase diagram of the *** also find that anomalous Floquet topological phases exist in the *** on examining the quench dynamics among topological phases,we analyze the site distribution of the 0-mode and p-mode edge states in long-period evolution after a *** results demonstrate that,under certain conditions,the site distribution of the 0-mode can be confined at the edge even in long-period ***,both the 0-mode and p-mode can recover and become confined at the edge in long-period evolution when the post-quench parameters(T,M_(2) /M_(1))in the phase diagram cross away from the phase boundary (M_(2)/ M_(1))=(6√3t2)/ M_(1)−***,we conclude that whether the edge state is confined at the edge in the long-period evolution after a quench depends on the similarity of the edge states before and after the *** findings reveal some new characteristics of quench dynamics in a periodically driven system.

关键词： Floquet system haldane model quench dynamics topological phase diagram

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Performance,microbial community and inhibition kinetics of long-term Cu2+ stress on an air-lift nitritation reactor with self-recirculation

引用

Journal of Environmental Sciences 2020年第5期32卷 117-127页

作者： Fan Feng Cheng-Shan Duan Xi Tang Xi Chen Xuan Lu Xi-Lin Chai Qaisar Mahmood Chong-Jian Tang Li-Yuan Chai Department of Environmental Engineering School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China National Engineering Research Centre for Control and Treatment of Heary Metal Pollution Changsha410083China The Jiangxi Provincial Collaborative Research Institute for Environmental Protection Industry Wannian335500China Jiangxi Gaia Environmental Science&Technology Co. Ltd.Shangrao334000China Department of Environmental Sciences COMSATS UniversityAbbottabadPakistan

Biological nitrogen removal process could be affected due to the presence of heavy metals owing to their toxicity and accumulation in the *** this study,the impact of Cu2+shock on a long-term nitritation operation was investigated in an air-lift reactor with *** the dynamics of microbial community and inhibition kinetics under Cu2+stress were *** results showed that Cu2+exerted severe inhibition on nitritation performance of an air-lift reactor(ALR)at 25 mg/*** corresponding NH4+-N removal efficiency decreased to below 50%,which was mainly due to the variation of microbial community structure,especially the inhibition of nitrifiers like Nitrosomonas(the relative abundance decreased from 30%to 1%after Cu2+inhibition).Kinetic parameters were obtained and compared after fitting the haldane *** long-term Cu2+stress on the ALR aggravated the ammonium affinity and the resistance to substrate self-inhibition of the nitritation sludge,but reduced the resistance to Cu2+***,Cu2+acted as uncompetitive inhibitor on nitritation *** results provide new insights into the nitritation characteristics under long-term Cu2+stress.

关键词： Nitritation Cu2+inhibition Microbial structure haldane model Kinetics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Topological phases of quantized light

引用

National Science Review 2021年第1期8卷 69-80页

作者： Han Cai Da-Wei Wang Interdisciplinary Center for Quantum Information and State Key Laboratory of Modern Optical Instrumentation Zhejiang Province Key Laboratory of Quantum Technology and Device and Department of Physics Zhejiang University CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences

Topological photonics is an emerging research area that focuses on the topological states of classical *** we reveal the topological phases that are intrinsic to the quantum nature of light, i.e. solely related to the quantized Fock states and the inhomogeneous coupling strengths between them. The Hamiltonian of two cavities coupled with a two-level atom is an intrinsic one-dimensional Su-Schriefer-Heeger model of Fock states. By adding another cavity, the Fock-state lattice is extended to two dimensions with a honeycomb structure, where the strain due to the inhomogeneous coupling strengths of the annihilation operator induces a Lifshitz topological phase transition between a semimetal and three band insulators within the lattice. In the semimetallic phase, the strain is equivalent to a pseudomagnetic field, which results in the quantization of the Landau levels and the valley Hall effect. We further construct an inhomogeneous Fock-state haldane model where the topological phases can be characterized by the topological *** d cavities being coupled to the atom, the lattice is extended to d-1 dimensions without an upper limit. In this study we demonstrate a fundamental distinction between the topological phases in quantum and classical optics and provide a novel platform for studying topological physics in dimensions higher than three.

关键词： topological phases Su-Schriefer-Heeger model Jaynes-Cummings model strain-induced magnetic field haldane model

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Dynamics and Hopf Bifurcation Analysis of a Chemostat model with Modified Growth Rate and Variable Yield Coefficient

引用

Open Journal of modelling and Simulation 2022年第4期10卷 417-427页

作者： Md. Shariful Islam Touhid Hossain Mir Shariful Islam Department of Mathematics University of Dhaka Dhaka Bangladesh Mechanical Engineering Department Kyushu University Fukuoka Japan International Institute for Carbon-Neutral Energy Research Kyushu University Fukuoka Japan Department of Oceanography University of Dhaka Dhaka Bangladesh

The objective of this study is to analyze a chemostat model of very simple type with the haldane expression of growth rate and a variable yield coefficient. The proposed modified model is analyzed qualitatively and quantitatively. Analytic conditions for stability and optimality are determined for washout and no washout equilibrium solutions. One of the main focuses of the study is to determine parameter values for which Hopf Bifurcations occur in a bioreactor. It has been shown that the maximum stable non-washout equilibrium exits at a residence time under suitable parameter values. Hopf bifurcation is observed at three different conditions of the parameters.

关键词： Chemostat Residence Time Hopf Bifurcation Bioreactor Growth Rate haldane model Yield Coefficient

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：