Chinese Journal of Physics最新文献_第4页

Triple Friedrich–Wintgen bound states in the continuum in asymmetric all–silicon photonic crystal slabs 非对称全硅光子晶体板连续介质中的三重Friedrich-Wintgen束缚态

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-09-03 DOI: 10.1016/j.cjph.2025.08.042

Wenqing Shao , Zixu Song , Manna Gu , Ying Tian , Zhi Hong , Xufeng Jing

{"title":"Triple Friedrich–Wintgen bound states in the continuum in asymmetric all–silicon photonic crystal slabs","authors":"Wenqing Shao , Zixu Song , Manna Gu , Ying Tian , Zhi Hong , Xufeng Jing","doi":"10.1016/j.cjph.2025.08.042","DOIUrl":"10.1016/j.cjph.2025.08.042","url":null,"abstract":"<div><div>In this research, we introduce a technique for achieving F–W BICs in terahertz all–silicon photonic crystals (PhC), which also enables Electromagnetically induced transparency (EIT). By employing a symmetric PhC featuring an array of cylindrical holes, we can create a symmetry–protected bound state in the continuum (SP BIC) supported by an electric dipole. When the <em>C</em><sub>2v</sub> symmetry is broken, the BIC evolves into a quasi–SP BIC. By adjusting the asymmetry parameters, quasi–BIC couples to guided mode resonance (GMR) via destructive interference and transforms into F–W BIC. As these parameters are varied, the two modes undergo multiple transitions between strong and weak coupling, resulting in the emergence of three F–W BICs. Additionally, we show that at the third F–W BIC, a slight deviation from the BIC conditions triggers EIT. We have successfully realized three F–W BICs in terahertz PhC and observed a distinctive mode recovery phenomenon in the mode coupling region by adjusting the asymmetry parameter <em>α</em>. At the third BIC deviation point, we achieved EIT primarily influenced by electric quadrupoles (EQ) and found that altering the rectangular hole width <em>L</em> and plate thickness <em>t</em> can independently control EIT.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1539-1551"},"PeriodicalIF":4.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spin entanglement and its monogamy relation in multi-event horizon spacetime 多事件视界时空中的自旋纠缠及其一夫一妻关系

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-09-02 DOI: 10.1016/j.cjph.2025.08.044

Rui Bao , Shu-Min Wu

引用次数: 0

Reply to comment "‘‘Biomedical and engineering aspects of nonlinear radiative peristaltic transport in chemically reactive blood flow of Ellis nanofluid in an asymmetric channel with activation energy’’ 回复评论“具有活化能的不对称通道中Ellis纳米流体的化学反应性血流中的非线性辐射蠕动运输的生物医学和工程方面”

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-31 DOI: 10.1016/j.cjph.2025.08.035

Kamel Guedri , Maha M.A. Lashin , A. Abbasi , Sami Ullah Khan , W. Farooq , M. Ijaz Khan , Ahmed M. Galal

引用次数: 0

Scalable and perfect noise-robust communication with no multipartite quantum entanglement 无多部量子纠缠的可扩展和完美的抗噪声通信

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-30 DOI: 10.1016/j.cjph.2025.08.041

Jia Hao , Yu-Guang Yang , Guang-Bao Xu , Dong-Huan Jiang , Yi-Hua Zhou , Wei-Min Shi

{"title":"Scalable and perfect noise-robust communication with no multipartite quantum entanglement","authors":"Jia Hao , Yu-Guang Yang , Guang-Bao Xu , Dong-Huan Jiang , Yi-Hua Zhou , Wei-Min Shi","doi":"10.1016/j.cjph.2025.08.041","DOIUrl":"10.1016/j.cjph.2025.08.041","url":null,"abstract":"<div><div>Recently, Chakraborty et al. considered a distributed computing scenario in which multiple senders and a single computing server compute a specific global function of their input strings [Phys. Rev. A 111(3), 032617 (2025)]. They demonstrated that when the senders and the server share a multipartite Greenberger–Horne–Zeilinger (GHZ) state, the classical communication overhead can be reduced by <span><math><mrow><mi>n</mi><mo>−</mo><mn>1</mn></mrow></math></span> bits for <span><math><mi>n</mi></math></span> senders in contrast to the scenario without entanglement. However, the depth requirements of unitary circuits for GHZ state preparation, as well as the unreliable long-distance distribution of GHZ states, limit the practical applications of these distributed computing tasks under current conditions. Here, we propose a feasible distributed computing protocol that does not require multipartite entangled states. We analyze the performance of our protocol under certain types of noise. We demonstrate that our protocol has a unique advantage: it exhibits perfect robustness under these types of noise. In addition, in contrast to the GHZ-state-based protocol, which requires one bit of classical communication from each sender, our protocol eliminates the need for classical communication. Moreover, this advantage can scale arbitrarily as the number of senders increases. Our proposal provides an important pathway for practical communication complexity tasks.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1415-1422"},"PeriodicalIF":4.6,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decoherence dynamics of a general quadratic state in a thermal environment 热环境中一般二次态的退相干动力学

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-29 DOI: 10.1016/j.cjph.2025.08.034

Zhi-Long Wan , Hong-Chun Yuan , Xiao-Lei Yin , Chang-Ying Wang , Yi-Xing Wang

引用次数: 0

Microscopic mechanism of low lattice thermal conductivity induced by strong anharmonic vibrations in thermoelectric zintl compounds KXAs (X = Sn, Ge) 强非谐振动诱导热电锌化合物KXAs （X = Sn, Ge）晶格导热系数低的微观机制

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-29 DOI: 10.1016/j.cjph.2025.08.037

Jiawei Cui , Yinchang Zhao , Jun Ni , Zhenhong Dai

{"title":"Microscopic mechanism of low lattice thermal conductivity induced by strong anharmonic vibrations in thermoelectric zintl compounds KXAs (X = Sn, Ge)","authors":"Jiawei Cui , Yinchang Zhao , Jun Ni , Zhenhong Dai","doi":"10.1016/j.cjph.2025.08.037","DOIUrl":"10.1016/j.cjph.2025.08.037","url":null,"abstract":"<div><div>The thermoelectric properties of Zintl compounds K<span><math><mi>X</mi></math></span>As (<span><math><mi>X</mi></math></span> = Sn, Ge) were systematically investigated using first-principles calculations in combination with density functional theory (DFT), self-consistent phonon (SCP) theory, and the Boltzmann transport equation (BTE). Both three-phonon and four-phonon scattering processes were explicitly considered. The results reveal that the lattice thermal conductivity (<span><math><msub><mi>κ</mi><mi>L</mi></msub></math></span>) remains significantly below 1 W/mK at high temperatures, which is mainly attributed to strong quartic anharmonicity induced by weak bonding between K atoms and their neighboring atoms, together with enhanced Umklapp scattering, effectively suppressing phonon transport. For electronic transport, multiple carrier scattering mechanisms were incorporated to provide a reasonable estimation of the carrier relaxation time. Furthermore, spin-orbit coupling (SOC)-induced Rashba splitting leads to a remarkable reconstruction of the electronic band structure, exerting a pronounced influence on the thermoelectric performance. The significant asymmetry in the band-edge curvature between the conduction and valence bands results in an imbalance of electron and hole contributions, giving rise to an unusual negative Seebeck coefficient under <span><math><mi>p</mi></math></span>-type doping conditions, thereby challenging the conventional bipolar transport theory. Overall, the maximum thermoelectric figure of merit (<span><math><mrow><mi>Z</mi><mi>T</mi></mrow></math></span>) along the <span><math><mi>c</mi></math></span> axis reaches 2.88 for KSnAs and 2.78 for KGeAs at 800 K, demonstrating excellent thermoelectric performance and broad application potential.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 175-190"},"PeriodicalIF":4.6,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting Hemodynamic Complexity in Thoracic Aortic Aneurysms with a POD–LSTM Surrogate Model 用POD-LSTM替代模型预测胸主动脉瘤血流动力学复杂性

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-28 DOI: 10.1016/j.cjph.2025.08.040

Wajdi Rajhi , Zakarya Ahmed , Ali B. M․ Ali , As'ad Alizadeh , Zahraa Abed Hussein , Narinderjit Singh Sawaran Singh , Borhen Louhichi , Walid Aich

{"title":"Predicting Hemodynamic Complexity in Thoracic Aortic Aneurysms with a POD–LSTM Surrogate Model","authors":"Wajdi Rajhi , Zakarya Ahmed , Ali B. M․ Ali , As'ad Alizadeh , Zahraa Abed Hussein , Narinderjit Singh Sawaran Singh , Borhen Louhichi , Walid Aich","doi":"10.1016/j.cjph.2025.08.040","DOIUrl":"10.1016/j.cjph.2025.08.040","url":null,"abstract":"<div><div>Accurate prediction of blood flow dynamics in Thoracic Aortic Aneurysms (TAA) is essential for rupture risk assessment, yet remains computationally demanding with conventional CFD approaches. This study explores hemodynamic factors associated with TAA rupture using a Predictive Surrogate Model (PSM) integrating Proper Orthogonal Decomposition (POD) and Long Short-Term Memory (LSTM) networks. Transient hemodynamic parameters—including wall shear stress, pressure, and blood flow velocity—were simulated via finite volume-based computational fluid dynamics (CFD) across a cardiac cycle. The PSM framework leverages POD for dimensionality reduction and LSTM for temporal dynamics prediction, enabling efficient reconstruction of hemodynamic fields. A comprehensive evaluation of reconstruction errors across varying POD modes quantified deviations between the Full Order Model (FOM) and Reduced Order Model (ROM), validating the accuracy of the surrogate approach. Comparative analyses between CFD and PSM results demonstrated the machine learning model’s capability to capture complex flow patterns, with additional contrasts highlighting hemodynamic distinctions in normal vessels versus TAA cases. Results revealed elevated velocity fluctuations in the TAA region, increasing flow complexity and reconstruction challenges. This work underscores the potential of hybrid POD-LSTM frameworks for rapid hemodynamic assessment in clinical settings, while emphasizing the need for advanced modeling to address turbulence and biomechanical instabilities in aneurysmal pathologies. Our results indicate that the performed hybrid technique could efficiently (more than 85 %) predict the hemodynamic factors on the saccular surface TAA.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 73-85"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy consumption analysis and logical stochastic resonance of Memcapacitor Hodgkin–Huxley neuron based on the Miller effect 基于米勒效应的Memcapacitor Hodgkin-Huxley神经元能量消耗分析及逻辑随机共振

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-28 DOI: 10.1016/j.cjph.2025.08.038

Xin Wang , Kai Jia , Mengyan Ge

{"title":"Energy consumption analysis and logical stochastic resonance of Memcapacitor Hodgkin–Huxley neuron based on the Miller effect","authors":"Xin Wang , Kai Jia , Mengyan Ge","doi":"10.1016/j.cjph.2025.08.038","DOIUrl":"10.1016/j.cjph.2025.08.038","url":null,"abstract":"<div><div>This study innovatively introduces a memcapacitor based on the Miller effect into the classical Hodgkin–Huxley (HH) neuron system, proposing an improved Memcapacitor Hodgkin–Huxley (MC–HH) neuron model. By replacing the traditional membrane capacitance with a memcapacitive element, this model fully leverages the unique memory characteristics of the memcapacitor, significantly enhancing the model's dynamic behavior and its simulation capability for the history-dependent properties of biological neurons. During the research process, nonlinear dynamic analysis methods such as bifurcation diagrams and phase trajectory plots were employed to investigate the complex dynamic behaviors of the model under the influence of the memcapacitor, as well as the logical stochastic resonance phenomenon driven by Gaussian white noise. The results indicate that the model exhibits bistability and hysteresis phenomena, revealing the \"trigger flux – membrane capacitance – electrical activity – energy metabolism\" mechanism through the synergistic regulation of stimulus current and trigger flux. Furthermore, this model not only inherits the advantage of classical HH neurons in achieving reliable logical operations but also provides a new regulatory dimension for the logical design of neuromorphic computing by leveraging the unique memory characteristics of the memcapacitor, which holds promise for advancing the development of highly integrated neuromorphic chips.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complex magnetism with reentrant spin glass behavior and magnetodielectric effect in La2FeMnO6 double perovskite system La2FeMnO6双钙钛矿体系具有重入自旋玻璃行为的复磁性和磁介电效应

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-28 DOI: 10.1016/j.cjph.2025.08.024

Debasmita Bala , C.H. Prashanth , Bheema Lingam Chittari , Venimadhav Adyam , H.D. Yang , Krishnamurthy Jyothinagaram , D. Chandrasekhar Kakarla

{"title":"Complex magnetism with reentrant spin glass behavior and magnetodielectric effect in La2FeMnO6 double perovskite system","authors":"Debasmita Bala , C.H. Prashanth , Bheema Lingam Chittari , Venimadhav Adyam , H.D. Yang , Krishnamurthy Jyothinagaram , D. Chandrasekhar Kakarla","doi":"10.1016/j.cjph.2025.08.024","DOIUrl":"10.1016/j.cjph.2025.08.024","url":null,"abstract":"<div><div>In this study, we investigate the influence of magnetic frustration, arising from competing 3<em>d</em> ion interactions, on the structural, magnetic, and dielectric properties of La<sub>2</sub>FeMnO<sub>6</sub> (LFMO) double perovskite system. X-ray diffraction (XRD) and DC magnetization measurements confirm the presence of anti-site disorder (ASD), which contributes to complex magnetic behaviors. Multiple glassy transitions are observed: a non-interacting cluster-glass-like state below ∼280 K, an interacting cluster-glass-like state at <em>T</em><sub>f1</sub> ≈ 85 K, and a spin-glass state at <em>T</em><sub>f2</sub> ≈12 K. These transitions are further supported by magnetic memory effects and thermal relaxation analysis. AC susceptibility reveals frequency-dependent dispersion, which is explained using the critical slowing model near <em>T</em><sub>f1</sub> and <em>T</em><sub>f2</sub>. Interparticle magnetic interactions are analyzed using isothermal remanent magnetization (IRM) and direct current demagnetization (DCD) techniques. Magnetoresistance (MR) and Maxwell–Wagner (MW) relaxation confirm a significant extrinsic magnetodielectric (MD) effect near <em>T</em> ≈ 240 K. Electronic structure calculations indicate a ferrimagnetic insulating state with a narrow band gap, attributed to the high-spin Fe³⁺ and intermediate-spin Mn³⁺ states. This work demonstrates how ASD and competing magnetic interactions drive multiple spin dynamics and distinct magnetic relaxations in the LFMO system.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1187-1198"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

One-step preparation of TiO2/PPy composite photoelectrochemical sensors and sensitive detection of TBZ and thiram TiO2/PPy复合光电传感器的一步制备及TBZ和thiram的灵敏检测

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-08-28 DOI: 10.1016/j.cjph.2025.08.039

Hanzhaobing Wu , Jin Xu , Hongping Zhao , Baolong Shi , Yu Wan , Hao Sun , Dalei Wang , Changwei Bi , Chao Wang , Wei Liu

引用次数: 0