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Scaling of highly excited Schrödinger-Poisson eigenstates and universality of their rotation curves 高激发态Schrödinger-Poisson特征态的标度及其旋转曲线的通用性
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-23 DOI: 10.1016/j.physleta.2025.130761
Gaia Marangon , Antonio Ponno , Lorenzo Zanelli
{"title":"Scaling of highly excited Schrödinger-Poisson eigenstates and universality of their rotation curves","authors":"Gaia Marangon ,&nbsp;Antonio Ponno ,&nbsp;Lorenzo Zanelli","doi":"10.1016/j.physleta.2025.130761","DOIUrl":"10.1016/j.physleta.2025.130761","url":null,"abstract":"<div><div>This work provides a comprehensive numerical characterization of the excited spherically symmetric stationary states of the Schrödinger-Poisson problem. Through numerical computation of highly excited eigenstates, novel heuristic laws are proposed, which describe how their fundamental features scale with the excitation index <em>n</em>. Key characteristics of the eigenfunctions include: the effective support, which exhibits a parabolic dependence on the excitation index; the distances between adjacent nodes, whose pattern varies regularly with <em>n</em>; and the oscillation amplitude, which follows a power law with an exponent approaching −1 for large <em>n</em>. Based on the eigenfunctions, eigenvelocities are conveniently defined. They exhibit a mid-range oscillatory region with an average linear trend, whose slope approaches zero in the large <em>n</em> limit; and they are characterized by heuristic scaling relationships with the excitation index <em>n</em>, revealing an intrinsic universal behavior.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"555 ","pages":"Article 130761"},"PeriodicalIF":2.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489730","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
Impact of delocalized nonlinear vibrational modes on the properties of NiTi 非定域非线性振动模态对镍钛材料性能的影响
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-22 DOI: 10.1016/j.physleta.2025.130769
O.V. Bachurina , A.A. Kudreyko , S.V. Dmitriev , D.V. Bachurin
{"title":"Impact of delocalized nonlinear vibrational modes on the properties of NiTi","authors":"O.V. Bachurina ,&nbsp;A.A. Kudreyko ,&nbsp;S.V. Dmitriev ,&nbsp;D.V. Bachurin","doi":"10.1016/j.physleta.2025.130769","DOIUrl":"10.1016/j.physleta.2025.130769","url":null,"abstract":"<div><div>The behavior of twenty-five one-component three-dimensional DNVMs in the simple cubic titanium and nickel sublattices, and their influence on binary NiTi alloy properties, are studied using molecular dynamics simulations. Seventeen DNVMs exhibit stable time-periodic vibrations, while the remaining eight DNVMs are unstable. These unstable modes transfer vibrational energy between sublattices upon excitation. Most stable DNVMs exhibit a hard-type nonlinearity, where the frequency increases with increasing amplitude. Stable DNVMs can accumulate energy in the range of 0.1–1.0 eV per atom for both the nickel and titanium sublattices. The specific heat decreases (increases) for DNVMs with a hard (soft) type of nonlinearity. Excitation of DNVMs results in positive compressive stresses proportional to the displacement vector length. These results provide insight into the complex behavior of DNVMs in a binary NiTi alloy and their impact on material properties.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"555 ","pages":"Article 130769"},"PeriodicalIF":2.3,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513746","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
Spin-differentiated orbital hybridization at bimetallene monolayers for oxygen evolution catalysis 双金属烯单层自旋分化轨道杂化析氧催化
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-21 DOI: 10.1016/j.physleta.2025.130767
Haizeng Song , Huangyi Xu , Yongyi Ding , Ying Wang , Tinghui Li , Yun Shan
{"title":"Spin-differentiated orbital hybridization at bimetallene monolayers for oxygen evolution catalysis","authors":"Haizeng Song ,&nbsp;Huangyi Xu ,&nbsp;Yongyi Ding ,&nbsp;Ying Wang ,&nbsp;Tinghui Li ,&nbsp;Yun Shan","doi":"10.1016/j.physleta.2025.130767","DOIUrl":"10.1016/j.physleta.2025.130767","url":null,"abstract":"<div><div>Electrochemical water splitting holds a vital position in the development of advanced energy conversion systems, but which encounters a significant technological bottleneck from the sluggish kinetics of the oxygen evolution reaction (OER). Herein, we suggest a series of bimetallene monolayers to reconfigure their bonding interaction with the reactants using particular spin-differentiated orbital hybridizations, where the half-filling 3d orbitals at magnetic Pd site can easily deprive an additional valence electron from neighboring Ag site that facilitate an electronic donation to the rate-limiting intermediates. More interestingly, the number of the metal active sites at bimetallene surfaces can be effectively increased in comparison to the traditional bulk materials, and the carrier migration ability and catalytic activity are effectively optimized due to this spin-differentiated orbital hybridization. This work opens a new door to design metal-based catalysts for accelerating oxygen evolution reaction.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130767"},"PeriodicalIF":2.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480913","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
Machine learning theory for acceptor molecular design of D:A1:A2 ternary organic solar cells D:A1:A2三元有机太阳能电池受体分子设计的机器学习理论
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-21 DOI: 10.1016/j.physleta.2025.130763
Jin-Hong Li , Cai-Rong Zhang , Ji-Jun Gong , Xiao-Meng Liu , Zi-Jiang Liu , Yu-Hong Chen , You-Zhi Wu , Hong-Shan Chen
{"title":"Machine learning theory for acceptor molecular design of D:A1:A2 ternary organic solar cells","authors":"Jin-Hong Li ,&nbsp;Cai-Rong Zhang ,&nbsp;Ji-Jun Gong ,&nbsp;Xiao-Meng Liu ,&nbsp;Zi-Jiang Liu ,&nbsp;Yu-Hong Chen ,&nbsp;You-Zhi Wu ,&nbsp;Hong-Shan Chen","doi":"10.1016/j.physleta.2025.130763","DOIUrl":"10.1016/j.physleta.2025.130763","url":null,"abstract":"<div><div>The exhaust and tedious experiment for optimizing third component in bulk-heterojunction and huge chemical space of molecules hider the effective development of ternary organic solar cells (OSCs). Herein, we constructed dataset of 479 D:A1:A2 ternary OSCs, and the machine learning model adopted the optimized and adjusted random forest model (RF) with good accuracy. Based on different donors and acceptors in the constructed data set, 1347,357 D:A1:A2 ternary OSCs were reconstructed, with a predicted PCE of up to 18.59 %, corresponding to PBDB-TF:L8-BO:bi-asy-YC12. Five kinds of efficient A2 molecules were selected from the constructed high PCE data set, and 76 new A2 molecules were generated by cutting and recombining them, and combined with 2 efficient donors and 3 A1 acceptors, 456 D:A1:A2 ternary OSCs were generated. Among them, there are 31 groups of ternary OSCs with PCE greater than 18.50 %. This work provides effective theoretical guidance for the development of ternary OSCs.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130763"},"PeriodicalIF":2.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366360","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
Vanadium dioxide and graphene-based switchable and tunable terahertz absorber 基于二氧化钒和石墨烯的可切换和可调谐太赫兹吸收剂
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-21 DOI: 10.1016/j.physleta.2025.130768
Lan Zhang , Hengli Feng , Wenqiang Shi , Hongyan Meng , Yang Jia , Yachen Gao
{"title":"Vanadium dioxide and graphene-based switchable and tunable terahertz absorber","authors":"Lan Zhang ,&nbsp;Hengli Feng ,&nbsp;Wenqiang Shi ,&nbsp;Hongyan Meng ,&nbsp;Yang Jia ,&nbsp;Yachen Gao","doi":"10.1016/j.physleta.2025.130768","DOIUrl":"10.1016/j.physleta.2025.130768","url":null,"abstract":"<div><div>A terahertz absorber with switchable and tunable absorption capabilities was proposed. The absorber comprises six layers including vanadium dioxide (VO<sub>2</sub>), Topas layer, graphene layer, another VO<sub>2</sub> layer, another Topas layer and a gold layer as substrate. The absorption performance of the absorber is investigated using the time-domain finite-difference (FDTD) method. The results demonstrate that the absorber is capable of achieving single-band absorption from 0.98 to 3.92 THz or dual-band absorption from 1.51 to 3.45 THz and 7.0 to 8.35 THz via the phase change of VO<sub>2</sub> through temperature variation. In the case of dual-band absorption, it can even realize an absorption strength of 99 % within a bandwidth of 0.8 THz, demonstrating its excellent absorption performance. Additionally, the absorption rate of the absorber can be dynamically adjusted by tuning the graphene's Fermi level (<em>E<sub>F</sub></em>). Moreover, the physical principles of absorption are elucidated through impedance matching theory and transmission line theory. Furthermore, the effect of the incidence angle and polarization angle on absorption was studied and found that the structure is insensitive to two factors. The research paves the way for innovative designs of terahertz functional devices aimed at applications such as stealth, modulation, switching, and sensing within the terahertz frequency range.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130768"},"PeriodicalIF":2.3,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470675","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
Strongly unidirectional and weakly directional pulses 强单向脉冲和弱定向脉冲
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-20 DOI: 10.1016/j.physleta.2025.130752
Alexandr B. Plachenov , Irina A. So , Aleksei P. Kiselev
{"title":"Strongly unidirectional and weakly directional pulses","authors":"Alexandr B. Plachenov ,&nbsp;Irina A. So ,&nbsp;Aleksei P. Kiselev","doi":"10.1016/j.physleta.2025.130752","DOIUrl":"10.1016/j.physleta.2025.130752","url":null,"abstract":"<div><div>The paper introduces new classes of spatiotemporal solutions to the wave equation – strongly unidirectional and weakly directional pulses, generalizing the definition of unidirectionality. The classes consist of families of solutions that arise under the Lorentz transformation of the common unidirectional solutions. We show that the parameter <span><math><mo>−</mo><mn>1</mn><mo>&lt;</mo><mi>β</mi><mo>&lt;</mo><mn>1</mn></math></span> of the Lorentz transformation is related to the opening angle <span><math><msub><mrow><mi>χ</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mi>arccos</mi><mo>⁡</mo><mo>(</mo><mi>β</mi><mo>)</mo></math></span> of a cone within which the wave vectors of plane-wave constituents of a solution are localized. Strongly unidirectional and weakly directional pulses correspond to <span><math><mi>β</mi><mo>&gt;</mo><mn>0</mn></math></span> and <span><math><mi>β</mi><mo>&lt;</mo><mn>0</mn></math></span>, respectively, and the common unidirectionality is described by <span><math><mi>β</mi><mo>=</mo><mn>0</mn></math></span>. Some general properties of the introduced classes of solutions are discussed with a representative example given.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130752"},"PeriodicalIF":2.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364874","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
W-shaped and various new optical features to the nonlinear Schrödinger equation with self-focusing and self-defocusing terms w形和各种新的光学特征的非线性Schrödinger方程具有自聚焦和自散焦项
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-20 DOI: 10.1016/j.physleta.2025.130756
Ali Khalid Salih , Hajar Farhan Ismael
{"title":"W-shaped and various new optical features to the nonlinear Schrödinger equation with self-focusing and self-defocusing terms","authors":"Ali Khalid Salih ,&nbsp;Hajar Farhan Ismael","doi":"10.1016/j.physleta.2025.130756","DOIUrl":"10.1016/j.physleta.2025.130756","url":null,"abstract":"<div><div>In this paper, we employ the <span><math><mo>(</mo><msup><mrow><mi>G</mi></mrow><mrow><mo>′</mo></mrow></msup><mo>/</mo><mi>G</mi><mo>,</mo><mn>1</mn><mo>/</mo><mi>G</mi><mo>)</mo></math></span>-expansion method to obtain exact soliton solutions for the nonlinear Schrödinger equation with self-focusing and self-defocusing terms. The model describes both a quasi-one-dimensional Bose–Einstein condensate with specific atomic interactions and the propagation of solitons in optical fibers. The solutions include trigonometric, hyperbolic, and rational forms, which solitary waves emerge through specific parameter choices. Graphical analyses illustrate the temporal evolution and diverse soliton structures such as kink, bright, singular, periodic, singular periodic, and W-shaped. A sensitivity analysis reveals bifurcation and chaotic behaviors driven by control parameter variations. The results confirm the method's effectiveness in producing analytically significant solutions for the nonlinear Schrödinger equation in mathematical physics and engineering.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130756"},"PeriodicalIF":2.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489435","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
Analogue black string in a quantum harmonic oscillator 模拟量子谐振子中的黑弦
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-20 DOI: 10.1016/j.physleta.2025.130764
Matheus E. Pereira , Alexandre G.M. Schmidt
{"title":"Analogue black string in a quantum harmonic oscillator","authors":"Matheus E. Pereira ,&nbsp;Alexandre G.M. Schmidt","doi":"10.1016/j.physleta.2025.130764","DOIUrl":"10.1016/j.physleta.2025.130764","url":null,"abstract":"<div><div>For a scalar particle without self-interaction or backreaction from the space-time background, the dynamics are governed by the Klein-Gordon equation. In this work, we write the exact solution of this equation in the background of a chargeless, static black string in terms of the biconfluent Heun function. In this curious system, we are able to explore what happens if we have negative values for the masses. The eigenvalue problem provides complex energy values for the particle, which may indicate the presence of quasinormal modes. We show a simple quantum system that can imitate the particle in the black string background, whose solutions are also applications of the biconfluent Heun function.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130764"},"PeriodicalIF":2.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364749","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
Chaotic dynamics and exact solutions for (3+1)-dimensional KdV–Calogero–Bogoyavlenskii–Schiff model （3+1）维KdV-Calogero-Bogoyavlenskii-Schiff模型的混沌动力学及精确解
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-20 DOI: 10.1016/j.physleta.2025.130751
Muhammad Hamza Rafiq , Muhammad Naveed Rafiq , Huda Alsaud
{"title":"Chaotic dynamics and exact solutions for (3+1)-dimensional KdV–Calogero–Bogoyavlenskii–Schiff model","authors":"Muhammad Hamza Rafiq ,&nbsp;Muhammad Naveed Rafiq ,&nbsp;Huda Alsaud","doi":"10.1016/j.physleta.2025.130751","DOIUrl":"10.1016/j.physleta.2025.130751","url":null,"abstract":"<div><div>We apply the Hirota bilinear method to systematically derive breather-kink wave, double-solitary wave and rogue wave solutions for the (3+1)-dimensional KdV–Calogero–Bogoyavlenskii–Schiff equation, which describes nonlinear phenomena in fluid dynamics and plasma physics. The validity and behavior of these solutions are demonstrated through graphical analysis. Moreover, we comprehensively analyze the chaotic dynamics in a 3D perturbed system through chaos detecting tools. These findings hold significant importance for the discipline, providing crucial insights into the complex dynamics of the KdV-CBS equation. We hope that our research results will assist researchers in comprehending the nonlinear phenomena associated with shallow water waves in oceans, rivers, and coastal areas.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130751"},"PeriodicalIF":2.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364696","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
Coherence measure of ensembles with nonlocality without entanglement 非定域性无纠缠系综的相干测度
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-06-20 DOI: 10.1016/j.physleta.2025.130760
Ayan Patra , Shiladitya Mal , Aditi Sen(De)
{"title":"Coherence measure of ensembles with nonlocality without entanglement","authors":"Ayan Patra ,&nbsp;Shiladitya Mal ,&nbsp;Aditi Sen(De)","doi":"10.1016/j.physleta.2025.130760","DOIUrl":"10.1016/j.physleta.2025.130760","url":null,"abstract":"<div><div>Irreversibility between preparation and discrimination processes is manifested in the indistinguishability of orthogonal product states via local operations and classical communication (LOCC). Characterizing quantum properties for sets of states according to their local distinguishing property is one of the avenues to explain the surprising results obtained in the LOCC indistinguishability domain. We propose a measure based on the <span><math><msub><mrow><mi>l</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> norm of coherence to quantitatively assess the quantumness of ensembles composed of orthogonal product states. Furthermore, to establish a hierarchy among different product ensembles, we establish a relationship between the coherence-based measure of an ensemble and the optimal success probability of distinguishing states within the ensemble using LOCC, constrained by a limited amount of classical communication and projective measurements, in the framework of minimum error state discrimination.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"554 ","pages":"Article 130760"},"PeriodicalIF":2.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364965","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
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