物理与天体物理最新文献_第10页

Electromagnetic helicity flux operators in higher dimensions

IF 5.4 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-04-02 DOI: 10.1007/JHEP04(2025)026

Wen-Bin Liu, Jiang Long, Xin-Hao Zhou

引用次数: 0

The CEGM NLSM

IF 5.4 1区物理与天体物理

Journal of High Energy Physics Pub Date : 2025-04-02 DOI: 10.1007/JHEP04(2025)030

Nick Early

{"title":"The CEGM NLSM","authors":"Nick Early","doi":"10.1007/JHEP04(2025)030","DOIUrl":"10.1007/JHEP04(2025)030","url":null,"abstract":"<p>Studying quantum field theories through geometric principles has revealed deep connections between physics and mathematics, including the discovery by Cachazo, Early, Guevara and Mizera (CEGM) of a generalization of biadjoint scalar amplitudes. However, extending this to generalizations of other quantum field theories remains a central challenge. Recently it has been discovered that the nonlinear sigma model (NLSM) emerges after a certain zero-preserving deformation from tr(<i>ϕ</i><sup>3</sup>). In this work, we find a much richer story of zero-preserving deformations in the CEGM context, yielding generalized NLSM amplitudes. We prove an explicit formula for the residual embedding of an <i>n</i>-point NLSM amplitude in a mixed <i>n</i> + 2 point generalized NLSM amplitude, which provides a strong consistency check on our generalization. We show that the dimension of the space of pure kinematic deformations is gcd(<i>k</i>, <i>n</i>) − 1, we introduce a deformation-compatible modification of the Global Schwinger Parameterization, and we include a new proof, using methods from matroidal blade arrangements, of the linear independence for the set of planar kinematic invariants for CEGM amplitudes. Our framework is compatible with string theory through recent generalizations of the Koba-Nielsen string integral to any positive configuration space <i>X</i><sup>+</sup>(<i>k</i>, <i>n</i>), where the usual Koba-Nielsen string integral corresponds to <i>X</i>(2, <i>n</i>) = <span>( {mathcal{M}}_{0,n} )</span>.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 4","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP04(2025)030.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

RF-sputtered Al-doped ZnO-based transparent electrochemical capacitors developed as a structural energy storage to replace double-glazed window for a smart building

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-04-02 DOI: 10.1063/5.0255229

Febin Paul, Vishnu Kalarikkal Narayanan, Sreenath S. Gopidas, Prasutha Rani Markapudi, Chan H. See, Gin Jose, Sankara Narayanan Potty, Libu Manjakkal

{"title":"RF-sputtered Al-doped ZnO-based transparent electrochemical capacitors developed as a structural energy storage to replace double-glazed window for a smart building","authors":"Febin Paul, Vishnu Kalarikkal Narayanan, Sreenath S. Gopidas, Prasutha Rani Markapudi, Chan H. See, Gin Jose, Sankara Narayanan Potty, Libu Manjakkal","doi":"10.1063/5.0255229","DOIUrl":"https://doi.org/10.1063/5.0255229","url":null,"abstract":"Structural energy storage combines energy storage with structural strength, reducing weight, saving space, and improving efficiency. Among various types, transparent structural energy storage shows strong potential for seamless integration into windows, screens, surfaces, consumer electronics, and automotive applications. Developing new electrode designs with environmentally abundant materials is essential to achieving global decarbonization goals and the net-zero target. In this work, we developed a transparent electrochemical capacitor (TEC) as a structural energy storage using aluminum-doped ZnO (AZO) film prepared by radio frequency sputtering on an indium-doped tin oxide (ITO) glass. We observed that the excellent electrical properties of the AZO film including high carrier concentration 6.54 × 1020 cm−3, Hall mobility 25.8 cm2 V−1 s−1, and resistivity 3.7 × 10−4 Ω cm contributed to enhancing the electrochemical performance of the TEC. The prepared transparent AZO exhibits a high specific capacitance of 44.4 μF cm−2 at 1 mV s−1 for a three-electrode study in a liquid electrolyte. The TEC fabricated using gel electrolyte shows a specific capacitance of 5.93 μF cm−2 at 1 mV s−1. We observed that both the electrochemical double-layer capacitance and pseudo-capacitance contributed to the charge storage in TEC, which was measured using Dunn's method. The double-glazed window shape of the TEC exhibits its promising potential for implementation as structural energy storage in smart buildings. We demonstrated TEC performance under various temperatures (−10 to 30 °C), its transparency of about 85% in the visible light range, and its integration capabilities with solar cells. This TEC aims to develop a structural element for smart buildings or autonomous electric vehicles.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"74 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143757782","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

ac Stark Spectroscopy of Interactions between Moiré Excitons and Polarons

IF 12.5 1区物理与天体物理

Physical Review X Pub Date : 2025-04-02 DOI: 10.1103/physrevx.15.021002

B. Evrard, H. S. Adlong, A. A. Ghita, T. Uto, L. Ciorciaro, K. Watanabe, T. Taniguchi, M. Kroner, A. İmamoğlu

{"title":"ac Stark Spectroscopy of Interactions between Moiré Excitons and Polarons","authors":"B. Evrard, H. S. Adlong, A. A. Ghita, T. Uto, L. Ciorciaro, K. Watanabe, T. Taniguchi, M. Kroner, A. İmamoğlu","doi":"10.1103/physrevx.15.021002","DOIUrl":"https://doi.org/10.1103/physrevx.15.021002","url":null,"abstract":"We use nonlinear pump-probe spectroscopy to study optical excitations in a charge-tunable MoSe</a:mi></a:mrow>2</a:mn></a:msub>/</a:mo>WS</a:mi></a:mrow>2</a:mn></a:msub></a:mrow></a:math> moiré heterostructure. An intense red-detuned laser pulse creates a photonic dressing of the material by introducing a large population of excitons or exciton polarons in a deep moiré potential. By measuring the resulting ac Stark effect with a weak resonant laser pulse, we gain access to the nature and mutual interactions of the elementary optical excitations. At charge neutrality, our measurements reveal that different exciton resonances, associated with confinement of their center-of-mass motion in the moiré potential, have a significant spatial overlap. The resulting short-range interactions manifest themselves as a density-dependent blueshift for same-valley excitons and bound biexciton states for opposite-valley excitons. The attractive polaron resonance that appears upon injection of electrons into the heterostructure shows a contrasting behavior: Here, we observe an electron-density-independent light shift and a clear pump-power-dependent saturation. These features are equivalent to that of an ensemble of independent two-level emitters and indicate a breakdown of the Fermi-polaron picture for optical excitations of electrons subject to a strong moiré potential. Our work establishes an experimental approach to elucidate the elementary optical excitations of semiconductor moiré heterostructures, providing a solid ground for the spectroscopy of correlated electronic and excitonic states in such materials. Published by the American Physical Society 2025 ","PeriodicalId":20161,"journal":{"name":"Physical Review X","volume":"37 1","pages":""},"PeriodicalIF":12.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143757990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

How Long are the Arms in DBM?

IF 2.2 1区物理与天体物理

Communications in Mathematical Physics Pub Date : 2025-04-02 DOI: 10.1007/s00220-025-05276-8

Ilya Losev, Stanislav Smirnov

引用次数: 0

Dynamic scene 360° three-dimensional reconstruction with large field-of-view based on metasurface-enabled structured light

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-04-02 DOI: 10.1016/j.optlastec.2025.112901

Anjun Qu , Mengran Yang , Bingxue Zhang , Hua Cheng , Shuqi Chen , Zhengren Zhang

{"title":"Dynamic scene 360° three-dimensional reconstruction with large field-of-view based on metasurface-enabled structured light","authors":"Anjun Qu , Mengran Yang , Bingxue Zhang , Hua Cheng , Shuqi Chen , Zhengren Zhang","doi":"10.1016/j.optlastec.2025.112901","DOIUrl":"10.1016/j.optlastec.2025.112901","url":null,"abstract":"<div><div>Three-dimensional (3D) reconstruction is a key technology for reshaping stereoscopic models of the physical world, with important applications in medical diagnosis, engineering exploration, and industrial manufacturing. Large field-of-view (FOV), dynamic reconstruction, and ultra-compact volume are important development directions for 3D reconstruction systems. However, existing reconstruction techniques struggle to meet these criteria simultaneously, which greatly restricts their further advancement.This paper proposes a structured light (SL) 3D reconstruction system based on metasurface, achieving 360° dynamic scene reconstruction with a large imaging FOV of 140°, a maximum error of only 6.32 % in 1.5 m, and SL dimensions of only 0.3 mm × 0.3 mm.Specifically, the designed metasurface projects 10,000 random dots into the 180° transmission space. By capturing and processing reflection images of dynamic scenes within the space using visual technology, single-frame 3D point clouds obtained at different times are stitched together to construct a complete 3D model of the scene.Compared to traditional 3D reconstruction technologies, our method offers significant advantages in terms of viewing angle range, dynamic 3D reconstruction, and integration. It paving a new way for the development of 3D devices, and having profound implications for future technological innovations.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112901"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747209","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

Variational Principles of Relative Weighted Topological Pressure

IF 1.3 3区物理与天体物理

Journal of Statistical Physics Pub Date : 2025-04-02 DOI: 10.1007/s10955-025-03434-9

Zhengyu Yin

引用次数: 0

Realization of the SERS Effect in a Silicon Semiconductor Structure with Fano Resonance

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601924

N. N. Melnik, E. V. Perevedentseva, V. V. Tregulov, G. N. Skoptsova, Yu. N. Gorbunova, D. S. Kostsov

引用次数: 0

Research on the forming ability and mechanism of laser impact micro isothermal forging

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-04-02 DOI: 10.1016/j.optlastec.2025.112909

Hongchen Liu, Zhang Yan, Xiao Wang, Maomao Cui, Qimeng Yao, Huixia Liu

{"title":"Research on the forming ability and mechanism of laser impact micro isothermal forging","authors":"Hongchen Liu, Zhang Yan, Xiao Wang, Maomao Cui, Qimeng Yao, Huixia Liu","doi":"10.1016/j.optlastec.2025.112909","DOIUrl":"10.1016/j.optlastec.2025.112909","url":null,"abstract":"<div><div>High-performance monolithic forming of thin-walled complex structures from difficult-to-deform lightweight materials is an urgent need for the development of microdevices, the microforging forming of which has been an unsolved challenge. We propose a laser shock micro isothermal forging method that combines pulsed laser shock microforming and isothermal forging. The forming performance and mechanism of 2024 aluminum alloy miniature spacer frames are investigated through simulations and experiments. We examine the effects of different laser energies and forging temperatures on the forming ability of workpieces. The results show that at constant laser energy, thermal activation and dynamic recovery mechanisms cause the forming height to increase with temperature. At constant temperature, the forming height increases with increasing laser energy, but at room temperature, increasing the laser energy alone is insufficient for the desired forming. At the same laser energy, 350 °C offers better forming than 20 °C, with higher forming limits and potential for further improvement by a larger laser energy. Analysis of elastic–plastic wave transfer and stress–strain indicates that before the positive plastic wave acts on the forming, reflected elastic waves induce strain in initial contact area with the die. Material flow analysis reveals forming and reverse plastic deformation mechanisms unique to dynamic loading. Key factors include cross-region material replenishment, work hardening, and plastic wave reflection, leading to material inflow into fluted cavities and reverse plastic deformation in web regions. The degree of reverse plastic deformation increases with increasing laser energy but enhances overall formation until a threshold is reached.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"188 ","pages":"Article 112909"},"PeriodicalIF":4.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747208","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

Hall field induced resistance oscillations by designed random obstacle arrays

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-02 DOI: 10.1103/physrevb.111.165301

F. Bartels, J. Strobel, B. Horn-Cosfeld, M. Cerchez, K. Pierz, H. W. Schumacher, D. Mailly, T. Heinzel

引用次数: 0