Physics Letters A最新文献_第9页

Exact solutions and conservation laws of the generalized Schrödinger–Hirota equation

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-21 DOI: 10.1016/j.physleta.2025.130373

Nikolay A. Kudryashov , Chao-Qing Dai , Qin Zhou , Aleksandr A. Kutukov

引用次数: 0

Excitation of a surface electromagnetic wave by a traveling Josephson vortex

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-21 DOI: 10.1016/j.physleta.2025.130389

A.S. Malishevskii, S.A. Uryupin

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Investigating broadly dispersive solitons in optical couplers for metamaterials with nonlinear cubic-quintic-septic dynamics and white noise using distinct integration approaches

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-20 DOI: 10.1016/j.physleta.2025.130367

Elsayed M.E. Zayed , Mona El-Shater , Muhammad Amin S. Murad , Aydin Secer , Muslum Ozisik , Ahmed H. Arnous

{"title":"Investigating broadly dispersive solitons in optical couplers for metamaterials with nonlinear cubic-quintic-septic dynamics and white noise using distinct integration approaches","authors":"Elsayed M.E. Zayed , Mona El-Shater , Muhammad Amin S. Murad , Aydin Secer , Muslum Ozisik , Ahmed H. Arnous","doi":"10.1016/j.physleta.2025.130367","DOIUrl":"10.1016/j.physleta.2025.130367","url":null,"abstract":"<div><div>This study delves into the complex dynamics of stochastic coupled systems within an optical coupler designed explicitly for metamaterials operating under a cubic-quintic-septic nonlinearity. This system is characterized by its spatiotemporal dispersion and is subjected to the randomness introduced by multiplicative white noise. The primary objective of our investigation is to unravel the intricate behaviour of this system, which is crucial for advancing our understanding of nonlinear optical phenomena and for the development of innovative engineering solutions in the field of photonics. To achieve this, we employ three distinct analytical techniques: The unified Riccati expansion method, a refined version of Kudryashov's method, and a novel enhanced direct algebraic approach. An in-depth analysis of the impact of white noise on the soliton structures reveals significant fluctuations, offering new insights into the stability and dynamics of solitons in noisy environments.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"539 ","pages":"Article 130367"},"PeriodicalIF":2.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nonlinear optical enhancement effect of nickel-coated multi-walled carbon nanotubes

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-20 DOI: 10.1016/j.physleta.2025.130365

Xiaofan Chen , Yuan Xue , Yang Yang , Songtao Li , Siwen Zhang , Yanfeng Wang , Wei Dang , Feng Wu

引用次数: 0

Response of the quantum ground state to a parametric drive

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-19 DOI: 10.1016/j.physleta.2025.130369

Ranjani Seshadri

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Ultra-sensitive hemoglobin sensing empowered by momentum-mismatch-driven quasi-bound states in the continuum

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-19 DOI: 10.1016/j.physleta.2025.130370

Shuaiqi Huang, Canxin Zhan, Yunyi Shan, Yingxian Li, Wenchuang Chen, Huiqing Dai, Keyin Cai, Jun Chen, Weilin Cai, Yuqing Su, Gengyan Chen, Feng Wu

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Reinforcement learning enhancing entanglement for two-photon-driven Rabi model

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-19 DOI: 10.1016/j.physleta.2025.130368

Tingting Li , Yiming Zhao , Yong Wang, Yanping Liu, Yazhuang Miao, Xiaolong Zhao

引用次数: 0

Features of alkali D2 line magnetically-induced transitions excited under π-polarized laser radiation

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-19 DOI: 10.1016/j.physleta.2025.130372

Armen Sargsyan , Emmanuel Klinger , Arevik Amiryan , David Sarkisyan

{"title":"Features of alkali D2 line magnetically-induced transitions excited under π-polarized laser radiation","authors":"Armen Sargsyan , Emmanuel Klinger , Arevik Amiryan , David Sarkisyan","doi":"10.1016/j.physleta.2025.130372","DOIUrl":"10.1016/j.physleta.2025.130372","url":null,"abstract":"<div><div>The impact of the optical field polarization on the spectrum of magnetically-induced transitions, a class of transitions forbidden at zero magnetic field, is studied with a weak-probe sub-Doppler technique. The high spectral resolution of the technique combined with the simplicity in interpreting the observed spectra allows to follow the behavior of individual transitions as a function of the magnetic field amplitude. We observe only one intense transition (out of <span><math><mn>2</mn><msub><mrow><mi>F</mi></mrow><mrow><mi>g</mi></mrow></msub><mo>+</mo><mn>1</mn></math></span>, where <em>F</em> is the quantum number associated with the total angular momentum of the atom) in the case of <em>π</em>-polarized laser radiation (a configuration where the applied magnetic field is parallel to the electric field from the laser radiation) in the <span><math><msub><mrow><mi>F</mi></mrow><mrow><mi>g</mi></mrow></msub><mo>→</mo><msub><mrow><mi>F</mi></mrow><mrow><mi>g</mi></mrow></msub><mo>+</mo><mn>2</mn></math></span> manifolds of <sup>85</sup>Rb, <sup>87</sup>Rb and <sup>133</sup>Cs for fields above a few hundreds of gauss. We show that this behavior is in agreement with a model based on the diagonalization of the Zeeman Hamiltonian matrix. With the rapid development of micro-machined vapor-cell-based sensors, these results will be of use to magnetometers operating above Earth field, wide-range laser frequency stabilization systems and atomic Faraday filters.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"539 ","pages":"Article 130372"},"PeriodicalIF":2.3,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Numerical study on cavitation bubble dynamics with dual-frequency excitation in magnesium alloy melt

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-18 DOI: 10.1016/j.physleta.2025.130366

Qichi Le , Zhaoyang Yin , JunChao Wu , Shutang Gao , Wenlai Li , Qiyu Liao

{"title":"Numerical study on cavitation bubble dynamics with dual-frequency excitation in magnesium alloy melt","authors":"Qichi Le , Zhaoyang Yin , JunChao Wu , Shutang Gao , Wenlai Li , Qiyu Liao","doi":"10.1016/j.physleta.2025.130366","DOIUrl":"10.1016/j.physleta.2025.130366","url":null,"abstract":"<div><div>The enhancement and control of acoustic cavitation in liquids by dual-frequency excitation have been verified. However, the effect of the acoustic parameters of the dual sources on the cavitation bubble dynamics is not clear and further studies are needed. In this work, a dual-frequency driven bubble dynamics model is developed based on the Keller-Miksis equation. The effects of equilibrium radius, driving frequency, and acoustic pressure on the dynamic evolution of a single bubble are investigated. The results indicate that the cavitation bubble collapse strength is high and sensitive to frequency variation in the low-low or low-high frequency domain. At low-low frequency coupling, dual-frequency ultrasound enhances cavitation. At low-high frequency coupling, dual-frequency ultrasound weakens the acoustic cavitation. With both driving frequencies larger than 100 kHz, the collapse strength reduces to a stable low level and no longer responds significantly to frequency variation. Increasing the acoustic pressure enhances the synergistic effect between the two distinct frequencies. The collapse strength for two equal frequencies is independent of the pressure ratio. For two distinct frequencies, increasing the pressure ratio of a lower frequency increases the collapse strength significantly. Higher collapse strength is often obtained at the cost of longer collapse time.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"539 ","pages":"Article 130366"},"PeriodicalIF":2.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Contributions of resonant excitation double auto-ionization to the electron-impact single-ionization cross-sections of Sn12+

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-17 DOI: 10.1016/j.physleta.2025.130356

F.J. Zhang , X.B. Ding , D.H. Zhang , C. Gao , J.L. Zeng , C.Z. Dong

{"title":"Contributions of resonant excitation double auto-ionization to the electron-impact single-ionization cross-sections of Sn12+","authors":"F.J. Zhang , X.B. Ding , D.H. Zhang , C. Gao , J.L. Zeng , C.Z. Dong","doi":"10.1016/j.physleta.2025.130356","DOIUrl":"10.1016/j.physleta.2025.130356","url":null,"abstract":"<div><div>Electron-impact ionization cross-sections are key parameters for determining the ionization balance in hot dense plasmas. The total cross-sections of electron-impact single ionization (EISI) for the ground configuration <span><math><mn>4</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>4</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>6</mn></mrow></msup><mn>4</mn><msup><mrow><mi>d</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> and the metastable state <span><math><mn>4</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>4</mn><msup><mrow><mi>p</mi></mrow><mrow><mn>6</mn></mrow></msup><mn>4</mn><mi>d</mi><mn>4</mn><mi>f</mi></math></span> of Sn<sup>12+</sup> are theoretically investigated, which is important for optimizing extreme ultraviolet light sources. To calculate EISI cross-sections of complex atoms, a hybrid method is utilized, in which the ground and lowly excited configurations are considered by the fine-structure level approximation, and the highly excited configurations are treated by the relativistic configuration approach. The predominant contributions of the electron-impact single ionization cross-sections are attributed to direct ionization (DI) and excitation-auto-ionization (EA). The detailed resonant structures originating from resonant excitation double auto-ionization (REDA) are studied particularly. The present calculations are compared with the experimental results, which indicates that much better agreement can be achieved only when the contributions of REDA processes are taken into account.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"539 ","pages":"Article 130356"},"PeriodicalIF":2.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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