检索结果-南通市图书馆

Evolution of N=20,28,50 shell closures in the 20≤Z≤30 region in deformed relativistic Hartree-Bogoliubov theory in continuum

引用

Chinese Physics C 2024年第1期48卷 144-153页

作者：郑茹尤孙向向申国防耿立升 School of Physics Beihang UniversityBeijing102206China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Institut für Kernphysik Institute for Advanced Simulation and Jülich Center for Hadron PhysicsForschungszentrum JülichD-52425 JülichGermany CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China peng huanwu Collaborative center for Research and Education Beihang UniversityBeijing 100191China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 102206China Southern center for Nuclear-Science theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China

Magicity,or shell closure,plays an important role in our understanding of complex nuclear *** this work,we employ one of the state-of-the-art density functional theories,the deformed relativistic Hartree-Bogoliubov theory in continuum(DRHBc)with the density functional PC-PK1,to investigate the evolution of the N=20,28,50 shell closures in the 20≤Z≤30 *** show how these three conventional shell closures evolve from the proton drip line to the neutron drip line by studying the charge radii,two-neutron separation energies,two-neutron gaps,quadrupole deformations,and single-particle *** particular,we find that in the 21≤Z≤27 region,the N=50 shell closure disappears or becomes quenched,mainly due to the deformation ***,both experimental data and theoretical predictions indicate that the N=28 shell closure disappears in the Mn isotopic chain,mainly due to the deformation *** DRHBc theory predicts the existence of the N=20 shell closure in the Ca,Sc,and Ti isotopic chains,but the existing data for the Ti isotopes suggest the contrary,and therefore further research is needed.

关键词： shell evolution covariant density functional theories magic numbers

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

Rate of the phase transition for a charged anti-de Sitter black hole

引用

Science China(Physics,Mechanics & Astronomy) 2023年第4期66卷 61-66页

作者： Zhen-Ming Xu Bin Wu Wen-Li Yang School of Physics Northwest UniversityXi'an 710127China Institute of Modern Physics Northwest UniversityXi'an 710127China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi'an 710127China peng huanwu center for fundamental theory Xi'an 710127China

Phase transition is a core content of black hole thermodynamics. This study adopted Kramer’s escape rate method for describing the Brownian motion of particles in an external field to investigate the intensity of the phase transition between small and large black hole states. Some existing studies mostly focused on the formal analysis of the thermodynamic phase transition of black holes, but they neglected the detailed description of the phase transition process. Our results show that the phase transition between small and large black holes for charged anti-de Sitter(AdS) black holes presents serious asymmetric features, and the overall process is dominated by the transition from a small black hole to a large black hole. This study filled a research gap of a stochastic process analysis on the issue of the first-order phase transition rate in the Ad S black hole.

关键词： black hole thermodynamics phase transition thermal potential Kramer’s escape rate

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

Shape Decoupling Effects and Rotation of Deformed Halo Nuclei

引用

原子核物理评论 2024年第1期41卷 75-85页

作者： SUN Xiangxiang ZHOU Shangui School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China peng huanwu Collaborative center for Research and Education Beihang UniversityBeijing 100191China

With the development of radioactive-ion-beam facilities,many exotic phenomena have been discovered or predicted in the nuclei far from the stability line,including cluster structure,shell structure,deformed halo,and shape decoupling *** study of exotic nuclear phenomena is at the frontier of nuclear physics *** covariant density functional theory(CDFT)is one of the most successful microscopic models in describing the structure of nuclei in almost the whole nuclear *** the framework of CDFT,toward a proper treatment of deformation and weak binding,the deformed relativistic Hartree-Bogoliubov theory in continuum(DRHBc)has been *** this contribution,we review the applications and extensions of the DRHBc theory to the study of exotic *** DRHBc theory has been used to investigate the deformed halos in B,C,Ne,Na,and Mg isotopes and the theoretical descriptions are reasonably consistent with available data.A DRHBc Mass Table Collaboration has been founded,aiming at a high precision nuclear mass table with deformation and continuum effects included,which is *** implementing the angular momentum projection based on the DRHBc theory,the rotational excitations of deformed halos have been investigated and it is shown that the deformed halos and shape decoupling effects also exist in the low-lying rotational excitation states of deformed halo nuclei.

关键词： exotic nuclei deformed halo shape decoupling effect nuclear mass rotational excitation density functional theory

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

Structure and dynamics of binary Bose−Einstein condensates with vortex phase imprinting

引用

Frontiers of physics 2023年第6期18卷 241-251页

作者： Jianchong Xing Wenkai Bai Bo Xiong Jun-Hui Zheng Tao Yang Shaanxi Key Laboratory for Theoretical Physics Frontiers Institute of Modern PhysicsNorthwest UniversityXi’an 710127China School of Science Wuhan University of TechnologyWuhan 430070China peng huanwu center for fundamental theory Xi’an 710127China

The combination of multi-component Bose−Einstein condensates(BECs)and phase imprinting techniques provides an ideal platform for exploring nonlinear dynamics and investigating the quantum transport properties of *** this paper,we study abundant density structures and corresponding dynamics of phase-separated binary Bose−Einstein condensates with phase-imprinted single vortex or vortex *** adjusting the ratio between the interspecies and intraspecies interactions,and the locations of the phase singularities,the typical density profiles such as ball-shell structures,crescent-gibbous structures,Matryoshka-like structures,sector-sector structures and sandwich-type structures appear,and the phase diagrams are *** dynamics of these structures exhibit diverse properties,including the penetration of vortex dipoles,emergence of half-vortex dipoles,co-rotation of sectors,and oscillation between *** pinning effects induced by a potential defect are also discussed,which is useful for controlling and manipulating individual quantum states.

关键词： Bose−Einstein condensates phase separation angular momentum energy competition

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

Merging and splitting dynamics between two bright solitons in dipolar Bose-Einstein condensates

引用

Chinese Physics B 2021年第12期30卷 233-236页

作者： Xin Li peng Gao Zhan-Ying Yang Wen-Li Yang School of Physics Northwest UniversityXi’an 710069China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi’an 710069China peng huanwu center for fundamental theory Xi’an 710127China Institute of Modern Physics Northwest UniversityXi’an 710069China

We numerically study the interaction dynamics of two bright solitons with zero initial velocities in the one-dimensional dipolar Bose-Einstein *** different dipolar strengths,the two bright solitons can merge into a breathing wave,and then split or propagate constantly after several oscillating *** quantitatively study the breathing frequency of wave after merging and the asymmetry property of solitons after splitting,and analyze their formation mechanism by the system's energy ***,the change of initial phase difference brings distinct effects on the soliton *** results provide insight into the new dynamical phenomena in dipolar systems and enrich the understanding for interaction between dipolar solitons.

关键词： bright soliton Bose-Einstein condensate dipolar soliton

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

Exploring hidden-charm and hidden-strange hexaquark states from lattice QCD

引用

Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 30-37页

作者： Hang Liu Jinchen He Liuming Liu peng Sun Wei Wang Yi-Bo Yang Qi-An Zhang INPAC Key Laboratory for Particle Astrophysics and Cosmology(MOE)Shanghai Key Laboratory for Particle Physics and CosmologySchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Maryland center for fundamental Physics Department of PhysicsUniversity of MarylandCollege ParkMaryland 20742USA Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Department of Physics and Institute of Theoretical Physics Nanjing Normal UniversityNanjing 210023China Southern center for Nuclear-Science theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China International Centre for Theoretical Physics Asia-Pacific Beijing 100049/Hangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Physics Beihang UniversityBeijing 102206China

Based on five different ensembles of newly generated(2+1)-flavor configurations with pion mass of approximately mπ■(140-310)MeV,we present a lattice analysis of hidden-charm and hidden-strange hexaquarks with the quark content■.The correlation matrices of two types of operators with JPC=0++,0-+,1++and 1--are simulated to extract the masses of the hexaquark candidates,which are subsequently extrapolated to the physical pion mass and continuum *** results indicate that ground state masses are below the■threshold and provide a characteristic signal for the experimental discovery of hexaquark candidates,which may enrich the versatile structure of multiquarks;moreover,it is an indispensable step to decipher the nonperturbative nature of the fundamental interactions of quarks and gluons.

关键词： quantum chromodynamics lattice QCD multiquark states

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

Inelastic Interaction of Double-Valley Dark Solitons for the Hirota Equation

引用

Chinese Physics Letters 2021年第9期38卷 1-5页

作者： Xiao-Man Zhang Yan-Hong Qin Li-Ming Ling Li-Chen Zhao School of Mathematics South China University of TechnologyGuangzhou 510640China School of Physics Northwest UniversityXi’an 710127China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi’an 710127China peng huanwu center for fundamental theory Xi’an 710127China

For a scalar integrable model,it is generally believed that the solitons interact with each other elastically,for instance,multi-bright solitons from the nonlinear Schrodinger equation and the Korteweg-de Vries equation,*** obtain double-valley dark solitons from the defocusing Hirota equation by the Darboux ***,we report a remarkable phenomenon for the inelastic interaction of the double-valley dark solitons,in contrast to the solitons interacting with each other elastically for a scalar integrable model in previous ***,we give the explicit conditions for the elastic collision based on the asymptotic analysis *** is shown that the double-valley dark solitons could also admit elastic interaction under the special parameters settings.

关键词： solitons integrable equation

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

Fine micro-thermal structures for Reissner-Nordström black hole

引用

Chinese Physics C 2020年第9期44卷 224-230页

作者： Zhen-Ming Xu Bin Wu Wen-Li Yang Institute of Modern Physics Northwest UniversityXi'an 710127China School of Physics Northwest UniversityXi'an 710127China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi'an 710127China peng huanwu center for fundamental theory Xi'an 710127China

We solve the condundrum on whether the molecules of the Reissner-Nordström black hole interact through the Ruppeiner thermodynamic geometry,basing our study on the concept of the black hole molecule proposed in[***.115(2015)111302]and choosing the appropriate extensive *** results show that the Reissner-Nordström black hole is indeed an interaction system that may be dominated by repulsive *** importantly,with the help of a novel quantity,namely the thermal-charge density,we describe the fine micro-thermal structures of the Reissner-Nordström black hole in *** different phases are presented,namely the free,interactive,and balanced *** thermal-charge density plays a role similar to the order parameter,and the back hole undergoes a new phase transition between the free phase and interactive *** competition between the free phase and interactive phase exists,which leads to extreme behavior of the temperature of the Reissner-Nordström black *** the extreme Reissner-Nordström black hole,the entire system is completely in the interactive *** importantly,we provide the thermodynamic micro-mechanism for the formation of the naked singularity of the Reissner-Nordström black hole.

关键词： the Ruppeiner thermodynamic geometry the Reissner-Nordstrom black hole the thermodynamics of black holes

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

Chiral corrections to the masses of the doubly heavy baryons

引用

Communications in Theoretical Physics 2022年第8期74卷 69-75页

作者： Hao-Ze Tong Hao-Song Li School of Physics Northwest UniversityXian 710127China Institute of Modern Physics Northwest UniversityXian 710127China Shaanxi Key Laboratory for theoretical Physics Frontiers Xian 710127China peng huanwu center for fundamental theory Xian 710127China

We study the masses of the doubly bottom baryons and the charmed-bottom baryons up to O(p^(3))in heavy baryon chiral perturbation *** determine the unknown low energy constants in the quark model and lattice *** show ... 详细信息

关键词： doubly heavy baryon heavy baryon chiral perturbation theory mass

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

鉴定最重QED原子的新方法

引用

Science Bulletin 2024年第10期69卷 1386-1391页

作者：傅靖航贾森周兴玉张玉洁沈成平苑长征 School of Physics Beihang UniversityBeijing 100083China School of Physics Southeast UniversityNanjing 211189China School of Physics and Electronic Technology Liaoning Normal UniversityDalian 116029China peng huanwu Collaborative center for Research and Education Beihang UniversityBeijing 100191China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of Modern Physics Fudan UniversityShanghai 200443China School of Physics Henan Normal UniversityXinxiang 453007China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

QED atoms are composed of unstructured and point-like lepton pairs bound together by the electromag-netic *** smallest and heaviest QED atom is formed by a τ^(+)τ^(-)***,the only known atoms of this type are the e^(+)e^(-)and μ^(+)e^(-)atoms,which were discovered 64 years ago and remain the sole examples found thus *** demonstrate that the J_(τ)(τ^(+)τ^(-) atom with J^(PC)=1^(--))atom signal can be observed with a significance larger than 5o including both statistical and systematic uncertainties,*** process e^(+)e^(-)→X^(+)Y^(-)E(X,Y=e,μ,π,K,or ρ,and E is the missing energy due to unobserved neutri-nos)with 1.5 ab^(-1)data taken around the τ pair production *** τ lepton mass can be measured with a precision of 1 keV with the same data *** is within one year's running time of the pro-posed super tau-charm facility in China or super charm-tau factory in Russia.

关键词： QED atom Tau lepton e^(+)e^(-)annihilation STCF SCTF

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

在线全文

在线全文

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

在线全文

在线全文

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：