Annalen der Physik最新文献

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Scale-Dependent Growth of Large-Scale Structure From Infrared Modifications of Gravity 从红外重力变化看大尺度结构的尺度相关增长
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-06-08 DOI: 10.1002/andp.70230
Vitantonio Castronuovo
{"title":"Scale-Dependent Growth of Large-Scale Structure From Infrared Modifications of Gravity","authors":"Vitantonio Castronuovo","doi":"10.1002/andp.70230","DOIUrl":"https://doi.org/10.1002/andp.70230","url":null,"abstract":"<div>\u0000 \u0000 <p>Late–time large–scale structure measurements allow for percent–level, scale–dependent departures from the growth predicted by General Relativity, while remaining tightly constrained by gravitational–wave propagation and weak–lensing observations. Imposing Lorentz invariance, metric coupling, luminal tensor speed, and a GR–like lensing sector, we show that, under these assumptions, viable linear modifications of late–time gravity can be effectively described by a restricted two–parameter infrared deformation of the growth sector.</p>\u0000 <p>The resulting kernel produces a localized modification of growth in the quasi–linear regime while leaving background expansion, lensing, and tensor propagation unchanged. We derive its general form and discuss how it can arise as an effective low–energy description, in representative ultraviolet realizations involving trace–coupled scalar mediators.</p>\u0000 <p>Using simplified Fisher forecasts for DESI Year–5, we provide indicative sensitivity estimates for the kernel parameters. Growth data alone can probe the amplitude at the percent level under idealized assumptions, with further improvement when combined with external CMB information, while the characteristic mass scale may be constrained at the tens–of–percent level.</p>\u0000 <p>These results illustrate how upcoming large–scale structure surveys can test a well–defined class of scale–dependent growth scenarios, and provide a systematic framework and validation roadmap for confronting infrared modifications of gravity with observations.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237494","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
Infrared Optical Modulator Based on VO2 Nanorod-Embedded Photonic Crystal Waveguide 基于VO2纳米棒嵌入光子晶体波导的红外光调制器
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-06-08 DOI: 10.1002/andp.70232
Mohamed Saleh M. Esmail, Mohamed Farhat O. Hameed, Salah S. A. Obayya, B. M. Younis
{"title":"Infrared Optical Modulator Based on VO2 Nanorod-Embedded Photonic Crystal Waveguide","authors":"Mohamed Saleh M. Esmail,&nbsp;Mohamed Farhat O. Hameed,&nbsp;Salah S. A. Obayya,&nbsp;B. M. Younis","doi":"10.1002/andp.70232","DOIUrl":"https://doi.org/10.1002/andp.70232","url":null,"abstract":"<div>\u0000 \u0000 <p>A near-infrared (IR) optical modulator based on a silicon photonic crystal (PhC) waveguide structure is introduced. To control the light modulation process, Vanadium dioxide (VO<sub>2</sub>) nanorods are inserted into the central defect of the PhC waveguide. The full vectorial finite element method (FVFEM) is employed to perform the bandgap analysis, numerical modelling, and the light propagation characteristics inside the proposed PhC structures. Several configurations of VO<sub>2</sub> nanorods are studied to obtain the lowest insertion loss (<i>IL</i>) and the highest extinction ratio (<i>ER</i>). The obtained results reveal that the presented modulator achieves a low <i>IL</i> of 1.94 dB and a large <i>ER</i> of 10.5 dB by adding a rectangular array of VO<sub>2</sub> nanorods in the central defect of the PhC waveguide. The results obtained are promising compared to those reported in the literature. Thus, the suggested modulator can be a good candidate for integrated photonic applications and optical communications.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237493","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
Marangoni Flow Before Carlo Marangoni 马朗戈尼在卡洛·马朗戈尼之前流动
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-06-05 DOI: 10.1002/andp.70228
Vahid Nasirimarekani, Eberhard Bodenschatz
{"title":"Marangoni Flow Before Carlo Marangoni","authors":"Vahid Nasirimarekani,&nbsp;Eberhard Bodenschatz","doi":"10.1002/andp.70228","DOIUrl":"https://doi.org/10.1002/andp.70228","url":null,"abstract":"<p>In fluid dynamics, particularly in research on soft matter, it is well known that surface tension gradients drive fluid flow, a phenomenon known as Marangoni flow. The effect is named after Carlo Marangoni, who described it in 1865 as part of his doctoral thesis on droplets and liquid films. While Marangoni's contribution is rightly recognized, this article examines three earlier scientific publications in which the same effect was described experimentally. Published between 1833 and 1855, these works are largely unknown to the modern soft matter research community, partly due to linguistic and disciplinary barriers. This work aims to trace the research history of this important phenomenon by briefly reviewing the history of Marangoni flow prior to Carlo Marangoni and highlighting the often fragmented nature of scientific discoveries across different eras and languages.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.70228","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174303","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
Relativistic Eulerian Plasma Kinetic Simulation Through Galerkin-Ritz-Like Base Functions 基于galerkin - ritz基函数的相对论欧拉等离子体动力学模拟
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-06-04 DOI: 10.1002/andp.202500614
Hai Lin, Chengpu Liu
{"title":"Relativistic Eulerian Plasma Kinetic Simulation Through Galerkin-Ritz-Like Base Functions","authors":"Hai Lin,&nbsp;Chengpu Liu","doi":"10.1002/andp.202500614","DOIUrl":"https://doi.org/10.1002/andp.202500614","url":null,"abstract":"<div>\u0000 \u0000 <p>Vlasov equation is a partial differential equation of Hamiltonian-Jacobi type. It combines with Maxwell equations and some special requirements to form a very fundamental model in plasma and beam physics. Even though these special requirements, such as macroscopic and microscopic non-negativity, microscopic relativistic boundary conditions, are favorable to obtain strict solutions of the model, they are rarely utilized in many related theoretical and computational investigations. The idea of utilizing these special requirements is analogous to that of the Galerkin-Ritz method, which refers to using a class of functions respecting special requirements to express test functions used in variational optimization of the “energy” functional associated with a partial differential equation. This work outlines a detailed procedure for achieving this method in Eulerian plasma kinetic simulation.</p>\u0000 </div>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174037","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
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-05-27
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引用次数: 0
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-05-27
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引用次数: 0
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-05-27
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引用次数: 0
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-05-26
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引用次数: 0
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-05-21
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引用次数: 0
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2026-05-21
{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"538 5","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148087092","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
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