Annalen der Physik最新文献

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A Possible Solution to the Mystery of the ANITA Anomalous Events ANITA异常事件之谜的一种可能解
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-12 DOI: 10.1002/andp.202500616
Massimo Villata
{"title":"A Possible Solution to the Mystery of the ANITA Anomalous Events","authors":"Massimo Villata","doi":"10.1002/andp.202500616","DOIUrl":"10.1002/andp.202500616","url":null,"abstract":"<p>In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA), a balloon-borne radio observatory flying over Antarctica, detected two strange upward-going radio pulse events that have not yet been explained by our current understanding of physics. These were not signals reflected by the ice and therefore it must have been an air shower originating from a cosmic ray coming from under the Antarctic ice, but this hypothesis was also ruled out by various data analyses. The CPT gravity theory and its associated cosmological model, the lattice Universe, can instead explain those events in a completely natural and spontaneous way, without any additional assumptions beyond general relativity and the expected matter-antimatter symmetry of the Universe on which they are based. Together with the antihelium candidate events from AMS-02, the anomalous ANITA events can thus lend further validity to a cosmological model that has already achieved considerable success in explaining the accelerated expansion of the Universe, without the need for dark energy. These events thus add to a series of problems unsolved by standard cosmology and physics, but whose solution is straightforward, spontaneous, and natural within the framework of CPT gravity, without the need for ad hoc hypotheses and unknown ingredients.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500616","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recoverability and Irreversible Information Loss in Physical Inference: Lessons From Quantum Measurement and Climate Reanalysis 物理推理中的可恢复性和不可逆信息损失:来自量子测量和气候再分析的教训
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-12 DOI: 10.1002/andp.202500556
Gerrit Lohmann
{"title":"Recoverability and Irreversible Information Loss in Physical Inference: Lessons From Quantum Measurement and Climate Reanalysis","authors":"Gerrit Lohmann","doi":"10.1002/andp.202500556","DOIUrl":"10.1002/andp.202500556","url":null,"abstract":"&lt;p&gt;Quantum Mechanics (QM) and Climate Science (CS) confront the epistemic problem of inferring an unobservable state from incomplete, indirect, and context-dependent measurements. Although their physics differ profoundly (non-commutative algebra vs. multi-scale fluid dynamics), their knowledge updates can be compared through a variational, information-projection view of Bayesian updating under observational constraints.&lt;/p&gt;&lt;p&gt;In QM, this principle is encoded by the Lüders rule, which admits an entropic-projection interpretation (minimizing the change in &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mi&gt;ρ&lt;/mi&gt;\u0000 &lt;annotation&gt;$rho$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; under the measurement constraint &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;E&lt;/mi&gt;\u0000 &lt;mi&gt;k&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;annotation&gt;$E_k$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;). In CS, it is realized by data assimilation (DA) under multi-scale limitations and strong information loss due to sparse, noisy proxies and temporal smoothing in paleoclimate records. In both domains, updates can be cast as minimizing an information-theoretic distance subject to the likelihood imposed by data &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mi&gt;D&lt;/mi&gt;\u0000 &lt;annotation&gt;$mathcal {D}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;.&lt;/p&gt;&lt;p&gt;We propose correspondences between the quantum instrument &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;I&lt;/mi&gt;\u0000 &lt;mi&gt;k&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mi&gt;ρ&lt;/mi&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$mathcal {I}_k(rho)$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; and climate analysis (assimilation) update operators, between POVM elements &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;E&lt;/mi&gt;\u0000 &lt;mi&gt;k&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;annotation&gt;$E_k$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; and proxy-system likelihoods &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;L&lt;/mi&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mi&gt;D&lt;/mi&gt;\u0000 &lt;mo&gt;|&lt;/mo&gt;\u0000 &lt;mi&gt;x&lt;/mi&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$mathcal {L}(mathcal {D}|mathbf {x})$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;, and between quantum recoverability (Petz-type recovery &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mi&gt;R&lt;/mi&gt;\u0000 &lt;annotation&gt;$mathcal {R}$&lt;/annotation&gt;\u0000 &lt;/semanti","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500556","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectral Measurement and Calculation of Internal Pressure in Laser-Induced Silicon Oxide Thin-Film Plasma 激光诱导氧化硅薄膜等离子体内压的光谱测量与计算
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-10 DOI: 10.1002/andp.202500601
Guixia Wang, Qingsong Wang
{"title":"Spectral Measurement and Calculation of Internal Pressure in Laser-Induced Silicon Oxide Thin-Film Plasma","authors":"Guixia Wang,&nbsp;Qingsong Wang","doi":"10.1002/andp.202500601","DOIUrl":"10.1002/andp.202500601","url":null,"abstract":"<div>\u0000 \u0000 <p>The pressure generated within a laser-induced thin-film plasma is a key factor driving plasma expansion and the formation of shock waves, which subsequently lead to mechanical damage to the thin film. Therefore, achieving quantitative diagnosis of this internal pressure is of great significance for understanding the mechanical mechanisms of laser-induced damage. This paper proposes and develops a method to indirectly calculate the internal pressure of plasma based on Laser-Induced Breakdown Spectroscopy (LIBS) technology. In the experiment, a nanosecond Nd: YAG pulsed laser (1064 nm) was focused on a silicon oxide thin-film sample to generate plasma, and its emission spectrum was collected. The electron temperature of the plasma was calculated using the relative intensity ratio of spectral lines, and the electron density was determined through the Stark broadening effect. Under the premise of verifying that the plasma satisfies the condition of local thermal equilibrium (LTE), the internal pressure of the plasma under different laser energies was quantitatively solved by combining it with the ideal gas law. Research indicates that the electron temperature of the silicon oxide thin-film plasma is on the order of 10<sup>3</sup> K and shows a decreasing trend with the increase in laser energy. The electron density is approximately 10<sup>18</sup> cm<sup>−</sup><sup>3</sup> and does not change significantly with increasing laser energy. The calculated internal pressure of the plasma is on the order of 10<sup>5 </sup>Pa and decreases slowly as the laser energy increases. This study successfully establishes a method for quantitatively obtaining the internal pressure of laser-induced thin-film plasma through spectral measurement, revealing the evolution pattern of internal pressure with laser energy under experimental conditions. The results provide key physical parameters for a deeper understanding of the mechanical effects in the interaction between lasers and thin-film materials.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Quantum Frustration as a Protection Mechanism in Non-Topological Majorana Qubits 非拓扑马约拉纳量子比特中的量子受挫保护机制
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-10 DOI: 10.1002/andp.202500581
E. Novais
{"title":"Quantum Frustration as a Protection Mechanism in Non-Topological Majorana Qubits","authors":"E. Novais","doi":"10.1002/andp.202500581","DOIUrl":"10.1002/andp.202500581","url":null,"abstract":"<p>I analyze the decoherence of a <span></span><math>\u0000 <semantics>\u0000 <mi>π</mi>\u0000 <annotation>$pi$</annotation>\u0000 </semantics></math>-junction qubit encoded by two co-located Majorana modes. Although not topologically protected, the qubit leverages distinct spatial profiles to couple to two independent environmental baths, realizing the phenomenon of quantum frustration. This mechanism is tested against the threat of quasiparticle poisoning (QP). I show that frustration is effective against Ohmic noise (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>s</mi>\u0000 <mo>=</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 <annotation>$s=1$</annotation>\u0000 </semantics></math>) and has some protection for <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>0.76</mn>\u0000 <mo>&lt;</mo>\u0000 <mi>s</mi>\u0000 <mo>&lt;</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 <annotation>$0.76&lt;s&lt;1$</annotation>\u0000 </semantics></math> sub-Ohmic noise. However, the experimentally prevalent <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>1</mn>\u0000 <mo>/</mo>\u0000 <mi>f</mi>\u0000 </mrow>\u0000 <annotation>$1/f$</annotation>\u0000 </semantics></math> noise (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>s</mi>\u0000 <mo>→</mo>\u0000 <mn>0</mn>\u0000 </mrow>\u0000 <annotation>$srightarrow 0$</annotation>\u0000 </semantics></math>) falls deep within the model's localized phase, where frustration is insufficient. This causes spontaneous symmetry breaking and catastrophic decoherence. The qubit's viability depends on what the effective environment is that these local Majorana wave functions experience.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500581","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tunable Goos–Hänchen Shifts and Group Delay Time in Single-Barrier Silicene 可调Goos-Hänchen位移和组延迟时间在单势垒硅
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-08 DOI: 10.1002/andp.70194
Youssef Fattasse, Hocine Bahlouli, Clarence Cortes, David Laroze, Ahmed Jellal
{"title":"Tunable Goos–Hänchen Shifts and Group Delay Time in Single-Barrier Silicene","authors":"Youssef Fattasse,&nbsp;Hocine Bahlouli,&nbsp;Clarence Cortes,&nbsp;David Laroze,&nbsp;Ahmed Jellal","doi":"10.1002/andp.70194","DOIUrl":"10.1002/andp.70194","url":null,"abstract":"<div>\u0000 \u0000 <p>We investigate the Goos–Hänchen (GH) shifts and group delay time of Dirac fermions traversing a rectangular electrostatic potential barrier in silicene. By analyzing their dependence on the incident angle, barrier height, barrier width, and incident energy, we demonstrate that the GH shifts exhibit pronounced oscillations arising from quantum interference within the barrier region. The amplitude and number of oscillation peaks increase with increasing energy, barrier width, and incidence angle, resulting in enhanced lateral beam displacement. Meanwhile, the group delay time exhibits resonant features associated with the formation of quasi-bound states, increasing with barrier width, energy, and incidence angle, while decreasing with increasing barrier height. These results clarify how barrier-induced quantum interference controls both the lateral and temporal dynamics of Dirac fermions in silicene, highlighting the potential role of electrostatic barriers in enabling tunable transport in 2D Dirac materials.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Einstein, Debye, and Fermi Temperatures, Electron-Phonon Coupling Constant and Parabolic Pressure Dependence of the Transition Temperature in the Y0.5Ce0.5H9 Hydride Superconductor Y0.5Ce0.5H9氢化物超导体中转变温度的爱因斯坦、德拜和费米温度、电子-声子耦合常数和抛物压力依赖关系
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-07 DOI: 10.1002/andp.70196
Evgeny F. Talantsev
{"title":"Einstein, Debye, and Fermi Temperatures, Electron-Phonon Coupling Constant and Parabolic Pressure Dependence of the Transition Temperature in the Y0.5Ce0.5H9 Hydride Superconductor","authors":"Evgeny F. Talantsev","doi":"10.1002/andp.70196","DOIUrl":"10.1002/andp.70196","url":null,"abstract":"<div>\u0000 \u0000 <p>Ternary and quaternary hydride superconductors have been the focus of intensive experimental and first-principles calculations studies in recent years. A primary approach in experimental synthesis of ternary and quaternary hydrides is to substitute La or Ce ions by other rare-earth elements in LaH<sub>10</sub> and CeH<sub>9</sub> phases, respectively. The choice of CeH<sub>9</sub> as a matrix phase to synthesise ternary and quaternary hydrides is because this phase exhibits transition temperatures above 70 K at a relatively low-pressure <i>p </i>= 90–130 GPa. One of the synthesized phases by this approach, where cerium is substituted by yttrium, is the ternary <i>P6<sub>3</sub>/mmc</i>-Y<sub>0.5</sub>Ce<sub>0.5</sub>H<sub>9</sub> hydride phase. This phase exhibits the onset of superconducting transition temperature <i>T</i><sub>c</sub> = 100–140 K in the pressure range of <i>p </i>= 98–155 GPa. Here, based on the analysis of reported experimental data by Chen et al. (https://doi.org/10.1038/s41467-024-46133-x), I found that the onset of the superconducting transition temperature in Ce<sub>0.5</sub>Y<sub>0.5</sub>H<sub>9</sub> obeys the parabolic dependence on pressure, <i>T</i><sub>c,onset</sub>(<i>P</i>)/<i>T</i><sub>c,onset,max</sub> = (1–95*(<i>P</i>-0.145)<sup>2</sup>), where <i>T</i><sub>c,max</sub> = 140 K, and <i>P</i> is in TPa. The revealed dependence of <i>T</i><sub>c</sub>(<i>P</i>) is remarkably similar to that of <i>T</i><sub>c</sub>(<i>p</i>) in cuprates, where p is the doping state. Furthermore, the evolution of the Einstein and Debye temperatures and the electron-phonon coupling strength with pressure have been derived for the <i>P6<sub>3</sub>/mmc</i>-Y<sub>0.5</sub>Ce<sub>0.5</sub>H<sub>9</sub> phase.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Asymptotic Analysis of Magnetohydrodynamic Boundary-Layer Flow for an Upper-Convected Maxwell Fluid 上对流Maxwell流体磁流体动力边界层流动的渐近分析
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-06 DOI: 10.1002/andp.202500624
Mingyue Wang, Jianqun Li, Youhe Zhou, Jizeng Wang
{"title":"Asymptotic Analysis of Magnetohydrodynamic Boundary-Layer Flow for an Upper-Convected Maxwell Fluid","authors":"Mingyue Wang,&nbsp;Jianqun Li,&nbsp;Youhe Zhou,&nbsp;Jizeng Wang","doi":"10.1002/andp.202500624","DOIUrl":"10.1002/andp.202500624","url":null,"abstract":"<div>\u0000 \u0000 <p>The magnetohydrodynamic (MHD) boundary-layer flow of an upper-convected Maxwell (UCM) fluid is investigated using asymptotic analysis. The governing nonlinear partial differential equations are first reduced to ordinary differential equations via boundary-layer approximations and similarity transformations. An asymptotic solution satisfying the prescribed boundary conditions is then constructed using the homotopy renormalization method based on Taylor expansion. The analytical results show that the Hartmann number modifies the velocity distribution via the Lorentz force, introducing electromagnetic damping into the momentum balance and affecting the boundary-layer structure. Increasing the Deborah number enhances the elastic contribution from the upper-convected Maxwell model, influencing near-wall shear behavior and nonlinear coupling. In the asymptotic limit of vanishing Deborah number, the governing equation reduces to the classical Newtonian MHD boundary-layer formulation. To validate our analytical results, we develop a numerical scheme based on interpolation wavelet collocation to solve the original partial differential equations directly. Comparisons reveal excellent agreement between the asymptotic and numerical solutions throughout the flow domain. The parameter ranges correspond to moderate magnetic interaction and weak-to-moderate viscoelastic effects relevant to polymer extrusion, electrically conducting coating flows, and liquid-metal cooling under magnetic fields. The asymptotic expressions provide insight into the coupled effects of inertia, elasticity, and electromagnetic forces.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Surface Functional Renormalization Group for Layered Quantum Materials 层状量子材料的表面功能重整化群
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-04-03 DOI: 10.1002/andp.202600007
Lennart Klebl, Dante M. Kennes
{"title":"Surface Functional Renormalization Group for Layered Quantum Materials","authors":"Lennart Klebl,&nbsp;Dante M. Kennes","doi":"10.1002/andp.202600007","DOIUrl":"10.1002/andp.202600007","url":null,"abstract":"<p>We present an extension to the 2D functional renormalization group to efficiently treat interactions on the surface or at interfaces of 3D systems. As an application, we consider a semi-infinite stack of 2D square lattices, including a Hubbard interaction on the surface layer and an alternating interlayer coupling. We investigate how strongly correlated states of the decoupled 2D Hubbard model on the surface evolve under inclusion of such an SSH-like interlayer coupling. For large parts of the phase diagram as a function of the interlayer hopping parameters, the physics of the 2D system prevails, with antiferromagnetic, superconducting <span></span><math>\u0000 <semantics>\u0000 <mi>d</mi>\u0000 <annotation>$d$</annotation>\u0000 </semantics></math>-wave, and ferromagnetic correlations taking center stage. However, for intermediate interlayer couplings the superconducting state at intermediate interaction strengths separates into two regimes by a small region of incommensurate spin-density-wave and spin-bond order, enabling the potential realization of chiral spin-bond order.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202600007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Broadband Achromatic Optical Needle by Axially Overlapping Dispersive Focal Spots of Different Wavelengths 不同波长色散焦点轴向重叠的宽带消色差光学针
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-03-31 DOI: 10.1002/andp.202500639
Xiong Fang, Yongjian Liu, Yi Lai, Xinjian Lu, Jia Liu, Dongliang Tang, Xin Xie, Zhongming Zang, Kuo Hai, Zhu Li
{"title":"Broadband Achromatic Optical Needle by Axially Overlapping Dispersive Focal Spots of Different Wavelengths","authors":"Xiong Fang,&nbsp;Yongjian Liu,&nbsp;Yi Lai,&nbsp;Xinjian Lu,&nbsp;Jia Liu,&nbsp;Dongliang Tang,&nbsp;Xin Xie,&nbsp;Zhongming Zang,&nbsp;Kuo Hai,&nbsp;Zhu Li","doi":"10.1002/andp.202500639","DOIUrl":"10.1002/andp.202500639","url":null,"abstract":"<div>\u0000 \u0000 <p>By axially overlapping dispersive focal spots of different wavelengths, this paper proposes broadband achromatic optical needles with controllable depth of focus generated based on reflective metalenses with binary or 4-level geometric phase modulation. Phase profiles of the metalenses are optimized by using a genetic algorithm in combination with fast Hankel transform to efficiently achieve the desired optical needles. Only a single wavelength optimization is needed within this framework, and we devise several samples with depth of focus of 2, 4, and 6 µm under binary and 4-level phase modulation, respectively. The results indicate that the proposed method yields the required achromatic performance of the optical needle in the wide waveband ranging from 572.8 to 732.8 nm. It is believed that this method offers a promising approach for applications in high-resolution imaging, integrated spectral detection, and advanced display. Our design strategy can provide a new physical carrier and device solution for precise, parallel, and multicolor control of the light field in 3D space.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
A Reconfigurable Broadband Band-Absorptive Frequency-Selective Absorber with High Oblique Incidence Stability Based on Bilayer Miura-Ori Structure 基于双层Miura-Ori结构的高斜入射稳定性可重构宽带带吸收选频吸收器
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-03-31 DOI: 10.1002/andp.202500631
Jiechu Liu, Yongfeng Li, Hongya Chen, Zhibiao Zhu, Hao yang, Lixin Jiang, Zhe Qin, Weisheng Zhang, Lin Zheng, Wenjie Wang, Qi Fang
{"title":"A Reconfigurable Broadband Band-Absorptive Frequency-Selective Absorber with High Oblique Incidence Stability Based on Bilayer Miura-Ori Structure","authors":"Jiechu Liu,&nbsp;Yongfeng Li,&nbsp;Hongya Chen,&nbsp;Zhibiao Zhu,&nbsp;Hao yang,&nbsp;Lixin Jiang,&nbsp;Zhe Qin,&nbsp;Weisheng Zhang,&nbsp;Lin Zheng,&nbsp;Wenjie Wang,&nbsp;Qi Fang","doi":"10.1002/andp.202500631","DOIUrl":"10.1002/andp.202500631","url":null,"abstract":"<div>\u0000 \u0000 <p>With the advancement of electromagnetic (EM) detection and stealth technologies, communication platforms now face dual requirements for high wave transmission and broadband stealth performance. The frequency selective rasorber (FSR), which combines passband transmission and broadband absorption capabilities, has demonstrated significant application potential in this field, and a critical challenge in FSR research lies in achieving efficient wide-angle wave transmission and absorption performance simultaneously. However, both planar and 3D absorbers face challenges in maintaining efficient transmission and absorption performance across wide incident angles. This paper proposes a bilayer Miura-ori structure that achieves low-frequency low-insertion-loss transmission combined with broadband absorption characteristics, realizing a low-frequency transmission/high-frequency absorption functionality across large angular ranges. The top origami layer incorporates resistive film absorbers while the bottom layer features etched circular loops. This origami configuration enables continuous (rather than discrete) state reconfiguration, facilitating optimal selection of folded configurations that maximize absorption/transmission efficiency within targeted frequency bands. The proposed Miura-ori FSR sample was fabricated and measured. The measurement results indicate that the proposed FSR exhibits a low-pass band (|S<sub>21</sub>| ≥ –1 dB) across a wide incidence angle range of 0° to 60°and within the frequency range under 620 MHz in TE waves and 680 MHz in TM waves. Furthermore, it achieves a maximum wide absorption bandwidth of 178% between 1.53 GHz and 25 GHz in TE waves and 153% between 3.27 and 25 GHz in TM waves, meeting both |S<sub>11</sub>| ≤ –10 dB and |S<sub>21</sub>| ≤ –10 dB criteria.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
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