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High-order time-reversal symmetry breaking normal state

Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 136-148页

作者： Meng Zeng Lun-hui hu Hong-ye hu Yi-Zhuang You Congjun Wu Department of Physics University of CaliforniaSan DiegoCalifornia 92093USA Department of Physics Zhejiang UniversityHangzhou 310058China New Cornerstone Science Laboratory Department of PhysicsSchoolof ScienceWestlake UniversityHangzhou 30024China Institute for Theoretical Sciences Westlake UniversityHangzhou 310024China Key Laboratory for Quantum Materials of Zhejiang Province School of ScienceWestlake UniversityHangzhou 310024China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024China

Spontaneous time-reversal symmetry breaking plays an important role in studying strongly correlated unconventional *** two superconducting gap functions with different symmetries compete,the relative phase channel(θ_(-)≡θ_(1)-θ_(2))exhibits an Ising-type Z_(2) symmetry due to the second order Josephson coupling,where θ_(1,2) are the phases of two gap *** contrast,the U(1) symmetry in the channel of θ_(+)≡(θ_(1)+θ_(2))/2 is *** phase locking,i.e.,ordering of θ_(-),can take place in the phase fluctuation regime before the onset of superconductivity,i.e.,when θ_(+) is *** θ_(-) is pinned at ±π/2,then timereversal symmetry is broken in the normal state,otherwise,if θ_(-)=0,or,π,rotational symmetry is broken,leading to a nematic normal *** both cases,the order parameters possess a 4-fermion structure beyond the scope of mean-field theory,which can be viewed as a high order symmetry *** employ an effective two-component XY-model assisted by a renormalization group analysis to address this *** a natural by-product,we also find the other interesting intermediate phase corresponds to ordering of θ_+ but with θ_(-)*** is the quartetting,or,charge-4e,superconductivity,which occurs above the low temperature Z_(2)-breaking charge-2e superconducting *** results provide useful guidance for studying novel symmetry breaking phases in strongly correlated superconductors.

关键词： superconductivity strong correlation time-reversal breaking charge-4e

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Long-term outcome of laparoscopic Nissen-Rossetti fundoplication versus Thal fundoplication in children with esophageal hiatal hernia: a retrospective report from two children's medical centers in Shanghai

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World Journal of Pediatrics 2016年第2期12卷 231-235页

作者： ji-Meng hu Ming hu ye-Ming Wu Jun Wang Zhi-Long Yan Chi Zhang Wei-hua Pan Hao Xia Department of Pediatric Surgery Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092China Department of Pediatric Surgery Shanghai Children's Medical CenterShanghai Jiao Tong University School of MedicineShanghai 200127China

Background: This study was undertaken to investigatethe intraoperative and postoperative complications,efficacy and outcome of two laparoscopic fundoplicationsfor the treatment of esophageal hiatal hernia in ***: To find a rational procedure, we performeda retrospective analysis of 136 children with esophagealhiatal hernia who underwent laparoscopic Nissen-Rossettior Thal fundoplication at two children's hospitals inShanghai over 13 years. The median follow-up time of thechildren was 42 months (range: 1-138 months). Their agevaried from 1 month to 11 years (median: 18.6 months).Results: All the children underwent laparoscopicfundoplications (72 cases of Nissen-Rossetti and 60 casesof Thal fundoplication) and 4 children converted to opensurgery. The mean age of the children at the time ofoperation was 1.6±1.9 years, and the mean weight was9.1±5.6 kg. Gastroesophageal refl ux was signifi cantly moresevere after a Thal fundoplication (P=0.003) and slightesophageal stenosis was signifi cant after a Nissen-Rossettifundoplication (P=0.02). The recurrent rate of hiatal herniawas 2.8% (2/72) after Nissen-Rossetti fundoplication incontrast to 5% (3/60) after Thal fundoplication. No deathoccurred after ***: There was no statistical difference ofrecurrence between laparoscopic Nissen-Rossetti and Thalfundoplication in the long-term outcomes. The rate of slightdysphagia was higher in the Nissen-Rossetti group. TheThal group had a significantly higher recurrence rate ofgastroesophageal reflux. There still exited learning curvefor this procedure. The incidence rate of complications issignifi cantly related to the profi ciency of pediatric surgeon.

关键词： esophageal hiatal hernia fundoplication laparoscopy

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Exploring the obscure profiles of pharmacological binding sites on voltage-gated sodium channels by BmK neurotoxins

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Protein & Cell 2011年第6期2卷 437-444页

作者： Zhi-Rui Liu Pin ye Yong-hua ji Laboratory of Neuropharmacology and Neurotoxicology Shanghai UniversityShanghai 200444China

Diverse subtypes of voltage-gated sodium channels(VGSCs)have been found throughout tissues of the brain,muscles and the *** extracted from the venom of the Asian scorpion Buthus martensi Karsch(BmK)act as sodium channel-specific modulators and have therefore been widely used to study VGSCs.α-type neurotoxins,named BmK I,BmKαIV and BmK abT,bind to receptor site-3 on VGSCs and can strongly prolong the inactivation phase of *** contrast,β-type neurotoxins,named BmK AS,BmK AS-1,BmK IT and BmK IT2,occupy receptor site-4 on VGSCs and can suppress peak currents and hyperpolarize the activation kinetics of sodium *** evidence from binding assays of scorpion neurotoxins on VGSCs,however,indicate that pharmacological sensitivity of VGSC subtypes to different modulators is much more complex than that suggested by the simpleα-type and β-type neurotoxin *** the mechanisms of possible dynamic interactions between site 3-/4-specific modulators and region-and/or speciesspecific subtypes of VGSCs would therefore greatly expand our understanding of the physiological and pharmacological properties of diverse *** this review,we discuss the pharmacological and structural diversity of VGSCs as revealed by studies exploring the binding properties and cross-competitive binding of site 3-or site 4-specific modulators in VGSC subtypes in synaptosomes from distinct tissues of diverse species.

关键词： voltage-gated sodium channel receptor sites scorpion neurotoxins

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C_2H, HC_3N and HNC observations in OMC-2/3

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Research in Astronomy and Astrophysics 2011年第6期11卷 671-678页

作者： Qiang Liu ji Yang Yan Sun ye Xu Purple Mountain Observatory Chinese Academy of Science Nanjing 210008 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

For the first time, the OMC-2/3 region was mapped in C2H （1–0）, HC3N （10–9） and HNC （1–0） lines. In general, the emissions from all the three molecular species reveal an extended filamentary structure. The distribution of C2H cores almost follows that of the 1300μm condensations, which might suggest that C2H is a good tracer to study the core structure of molecular clouds. The core masses traced by HNC are rather ？at, ranging from 18.8 to 49.5 M , while also presenting a large span for those from C2H, ranging from 6.4 to 36.0 M . The line widths of both HNC and C2H look very similar, and both are wider than that of HC3N. The line widths of the three lines are all wider than those from dark clouds, implying that the former is more active than the latter, and has larger turbulence caused by winds and UV radiation from the surrounding massive stars.

关键词： ISM: abundances-ISM: individual (Orion Molecular Clouds)-ISM: molecules-stars: formation

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Valley dynamics of different excitonic states in monolayer WSe_(2)grown by molecular beam epitaxy

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Journal of Semiconductors 2022年第8期43卷 33-40页

作者： Shengmin hu jialiang ye Ruiqi Liu Xinhui Zhang State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Materials Science and Opto-electronic Technology University of Chinese Academy of SciencesBeijing 100049China

Monolayer transition-metal dichalcogenides possess rich excitonic physics and unique valley-contrasting optical selection rule,and offer a great platform for long spin/valley lifetime engineering and the associated spin/valleytronics *** two-color time-resolved Kerr rotation and time-resolved reflectivity spectroscopy,we investigate the spin/valley dynamics of different excitonic states in monolayer WSe_(2)grown by molecular beam *** fine tuning of the photon energy of both pump and probe beams,the valley relaxation process for the neutral excitons and trions is found to be remarkably different-their characteristic spin/valley lifetimes vary from picoseconds to nanoseconds,*** observed long trion spin lifetime of>2.0 ns is discussed to be associated with the dark trion states,which is evidenced by the photon-energy dependent valley polarization *** results also reveal that valley depolarization for these different excitonic states is intimately connected with the strong Coulomb interaction when the optical excitation energy is above the exciton resonance.

关键词： TMDCs excitons valley polarization lifetime two-color time-resolved Kerr rotation spectroscopy

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Collapse arrest in the space-fractional Schrodinger equation with an optical lattice

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Chinese Physics B 2021年第10期30卷 328-333页

作者： Manna Chen Hongcheng Wang Hai ye Xiaoyuan huang ye Liu Sumei hu Wei hu School of Electrical Engineering and Intelligentization Dongguan University of TechnologyDongguan 523808China Department of Physics Guangdong University of Petrochemical TechnologyMaoming 525000China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices South China Normal UniversityGuangzhou 510006China

The soliton solution and collapse arrest are investigated in the one-dimensional space-fractional Schrodinger equation with Kerr nonlinearity and optical *** approximate analytical soliton solutions are obtained based on the variational approach,which provides reasonable ***-stability analysis shows that all the solitons are linearly *** collapses are found when the Levy index 1<α≤***α=1,the collapse is arrested by the lattice potential when the amplitude of perturbations is small *** is numerically proved that the energy criterion of collapse suppression in the two-dimensional traditional Schrodinger equation still holds in the one-dimensional fractional Schr odinger *** physical mechanism for collapse prohibition is also given.

关键词： soliton solution collapse variational approach nonlinear Schrodinger equation

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AtSec62 is critical for plant development and is involved in ER-phagy in Arabidopsis thaliana

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Journal of Integrative Plant Biology 2020年第2期62卷 181-200页

作者： Shuai hu Hao ye Yong Cui Liwen jiang Centre for Cell&Developmental Biology and State Key Laboratory of Agrobiotechnology School of Life SciencesThe Chinese University of Hong KongHong KongChina CUHK Shenzhen Research Institute The Chinese University of Hong KongShenzhen 518057China

The endoplasmic reticulum(ER)is the major site for protein folding in eukaryotic *** homeostasis is essential for the development of an organism,whereby the unfolded protein response(UPR)within the ER is precisely ***-phagy is a newly identified selective autophagic pathway for removal of misfolded or unfolded proteins within the ER in mammalian ***62,a component of the translocon complex,was recently characterized as an ER-phagy receptor during the ER stress recovery phase in *** this study,we demonstrated that the Arabidopsis Sec62(AtSec62)is required for plant development and might function as an ER-phagy receptor in *** showed that AtSec62 is an ER-localized membrane protein with three transmembrane domains(TMDs)with its C-terminus facing to the ER ***62 is required for plant development because atsec62 mutants display impaired vegetative growth,abnormal pollen and decreased ***62 mutants are sensitive towards tunicamycin(TM)-induced ER stress,whereas overexpression of AtSec62 subsequently enhances stress tolerance during the ER stress recovery ***,YFP-AtSec62 colocalizes with the autophagosome marker m Ch-Atg8e in ring-like structures upon ER stress *** together,these data provide evidence for the pivotal roles of AtSec62 in plant development and ER-phagy.

关键词： AtSec62 involved Arabidopsis thaliana

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Robust Solutions to Uncertain Linear Complementarity Problems

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Acta Mathematicae Applicatae Sinica 2011年第2期27卷 339-352页

作者： Dan Wu ji-ye Han jing-hao Zhu Department of Applied Mathematics Tongji University Shanghai 200092 China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China Department of Mathematics Tongji University Shanghai 200092 China

In this paper, we adopt the robust optimization method to consider linear complementarity problems in which the data is not specified exactly or is uncertain, and it is only known to belong to a prescribed uncertainty set. We propose the notion of the p-robust counterpart and the p-robust solution of uncertain linear complementarity problems. We discuss uncertain linear complementarity problems with three different uncertainty sets, respectively, including an unknown-but-bounded uncertainty set, an ellipsoidal uncertainty set and an intersection-of-ellipsoids uncertainty set, and present some sufficient and necessary （or sufficient） conditions which p-robust solutions satisfy. Some special eases are investigated in this paper.

关键词： uncertain linear complementarity problems robust optimization technology uncertainty set p- robust solution

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Simultaneous two-way classical communication and measurement-deviceindependent quantum key distribution on oceanic quantum channels

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Communications in Theoretical Physics 2022年第12期74卷 21-34页

作者： Hongyang hu Hai Zhong Wei ye Ying Guo School of Automation Central South UniversityChangsha 410083China School of Computer Science and Engineering Central South UniversityChangsha 410083China

Simultaneous two-way classical and quantum(STCQ)communication combines both continuous classical coherent optical communication and continuous-variable quantum key distribution(CVQKD),which eliminates all detection-related imperfections by being measurement-device-independent(MDI).In this paper,we propose a protocol relying on STCQ communication on the oceanic quantum channel,in which the superposition-modulation-based coherent states depend on the information bits of both the secret key and the classical communication *** analyse the encoding combination in classical communication and consider the probability distribution transmittance under seawater turbulence with various interference *** numerical simulations of various practical scenarios demonstrate that the proposed protocol can simultaneously enable two-way classical communication and CV-MDI QKD with just a slight performance degradation transmission distance compared to the original CV-MDI QKD ***,the asymmetric situation outperforms the symmetric case in terms of transmission distance and optical modulation *** further take into consideration the impact of finite-size effects to illustrate the applicability of the proposed scheme in practical *** results show the feasibility of the underwater STCQ scheme,which contributes toward developing a global quantum communication network in free space.

关键词： continuous-variable quantum key distribution measurement-device-independent simultaneous oceanic turbulence channel transmittance

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Model Implementation and Analysis of a True Three-dimensional Display System

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Computer Systems Science & Engineering 2021年第12期39卷 403-414页

作者： ye Tian Yang Yang Han Yang Ze ji Changchun University of Science and Technology Changchun130022China Tsinghua University Beijing100084China Academy of Military Sciences Beijing100166China Cardiff University CardiffCF243AAUK

To model a true three-dimensional(3D)display system,we introduced the method of voxel molding to obtain the stereoscopic imaging space of the *** the distribution of each voxel,we proposed a four-dimensional(4D)Givone–Roessor(GR)model for state-space representation—that is,we established a local state-space model with the 3D position and one-dimensional time coordi-nates to describe the ***,we extended the original elementary operation approach to a 4D condition and proposed the implementation steps of the realiza-tion matrix of the 4D GR ***,we described the working process of a true 3D display system,analyzed its real-time performance,introduced the fixed-point quantization model to simplify the system matrix,and derived the conditions for the global asymptotic stability of the system after ***,we provided an example to prove the true 3D display system’s feasibility by *** GR-model-representation method and its implementation steps proposed in this paper simplified the system’s mathematical expression and facilitated the microcon-troller software ***-time and stability analyses can be used widely to analyze and design true 3D display systems.

关键词： True 3D display system method of voxel molding(MVM) Givone-Roessor(GR)model asymptotic stability Bounded-Input Bounded-Output(BIBO)stability real-time display

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