物理最新文献

{"title":"Leptogenesis with perturbations in type-II and type-III seesaw models","authors":"Iason Baldes","doi":"10.1140/epjc/s10052-025-14277-9","DOIUrl":"10.1140/epjc/s10052-025-14277-9","url":null,"abstract":"<div><p>Density perturbations have recently been shown to lead to a novel effect in the freeze-out of heavy particles called “acoustically driven freeze-out.” This leads to an enhancement in the yield in standard leptogenesis. We extend this calculation to include <span>(2 rightarrow 2)</span> washout processes in type-I leptogenesis and the Sommerfeld-enhanced <span>(2 rightarrow 2)</span> gauge annihilations in type-II and type-III leptogenesis. These CP conserving gauge annihilations suppress the yield of heavy particles sourcing the asymmetry. We show the acoustically driven freeze-out leads to novel enhancements in the baryon asymmetry in type-II and type-III leptogenesis, already in the weak washout regime, in contrast with type-I leptogenesis.</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-14277-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Quality assurance and quality control of the (26~text {m}^2) SiPM production for the DarkSide-20k dark matter experiment","authors":"F. Acerbi,&nbsp;P. Adhikari,&nbsp;P. Agnes,&nbsp;I. Ahmad,&nbsp;S. Albergo,&nbsp;I. F. Albuquerque,&nbsp;T. Alexander,&nbsp;A. K. Alton,&nbsp;P. Amaudruz,&nbsp;M. Angiolilli,&nbsp;E. Aprile,&nbsp;M. Atzori Corona,&nbsp;D. J. Auty,&nbsp;M. Ave,&nbsp;I. C. Avetisov,&nbsp;O. Azzolini,&nbsp;H. O. Back,&nbsp;Z. Balmforth,&nbsp;A. Barrado Olmedo,&nbsp;P. Barrillon,&nbsp;G. Batignani,&nbsp;P. Bhowmick,&nbsp;M. Bloem,&nbsp;S. Blua,&nbsp;V. Bocci,&nbsp;W. Bonivento,&nbsp;B. Bottino,&nbsp;M. G. Boulay,&nbsp;A. Buchowicz,&nbsp;S. Bussino,&nbsp;J. Busto,&nbsp;M. Cadeddu,&nbsp;M. Cadoni,&nbsp;R. Calabrese,&nbsp;V. Camillo,&nbsp;A. Caminata,&nbsp;N. Canci,&nbsp;A. Capra,&nbsp;M. Caravati,&nbsp;M. Cardenas-Montes,&nbsp;N. Cargioli,&nbsp;M. Carlini,&nbsp;P. Castello,&nbsp;P. Cavalcante,&nbsp;S. Cebrian,&nbsp;J. Cela Ruiz,&nbsp;S. Chashin,&nbsp;A. Chepurnov,&nbsp;L. Cifarelli,&nbsp;D. Cintas,&nbsp;B. Cleveland,&nbsp;Y. Coadou,&nbsp;V. Cocco,&nbsp;D. Colaiuda,&nbsp;E. Conde Vilda,&nbsp;L. Consiglio,&nbsp;B. S. Costa,&nbsp;M. Czubak,&nbsp;S. D’Auria,&nbsp;M. D. Da Rocha Rolo,&nbsp;G. Darbo,&nbsp;S. Davini,&nbsp;R. de As mundis,&nbsp;S. De Cecco,&nbsp;G. Dellacasa,&nbsp;A. V. Derbin,&nbsp;F. Di Capua,&nbsp;L. Di Noto,&nbsp;P. Di Stefano,&nbsp;L. K. Dias,&nbsp;C. Dionisi,&nbsp;G. Dolganov,&nbsp;F. Dordei,&nbsp;V. Dronik,&nbsp;A. Elersich,&nbsp;E. Ellingwood,&nbsp;T. Erjavec,&nbsp;N. Fearon,&nbsp;M. Fernandez Diaz,&nbsp;A. Ficorella,&nbsp;G. Fiorillo,&nbsp;P. Franchini,&nbsp;D. Franco,&nbsp;H. Frandini Gatti,&nbsp;E. Frolov,&nbsp;F. Gabriele,&nbsp;D. Gahan,&nbsp;C. Galbiati,&nbsp;G. Galiski,&nbsp;G. Gallina,&nbsp;G. Gallus,&nbsp;M. Garbini,&nbsp;P. Garcia Abia,&nbsp;A. Gawdzik,&nbsp;A. Gendotti,&nbsp;G. K. Giovanetti,&nbsp;V. Goicoechea Casanueva,&nbsp;A. Gola,&nbsp;L. Grandi,&nbsp;G. Grauso,&nbsp;G. Grilli di Cortona,&nbsp;A. Grobov,&nbsp;M. Gromov,&nbsp;M. Gulino,&nbsp;C. Guo,&nbsp;B. R. Hackett,&nbsp;A. Hallin,&nbsp;A. Hamer,&nbsp;M. Haranczyk,&nbsp;T. Hessel,&nbsp;S. Horikawa,&nbsp;J. Hu,&nbsp;F. Hubaut,&nbsp;J. Hucker,&nbsp;T. Hugues,&nbsp;E. V. Hungerford,&nbsp;A. Ianni,&nbsp;G. Ippoliti,&nbsp;V. Ippolito,&nbsp;A. Jamil,&nbsp;C. Jillings,&nbsp;R. Keloth,&nbsp;N. Kemmerich,&nbsp;A. Kemp,&nbsp;Carlos E. Kester,&nbsp;M. Kimura,&nbsp;K. Kondo,&nbsp;G. Korga,&nbsp;L. Kotsiopoulou,&nbsp;S. Koulosousas,&nbsp;A. Kubankin,&nbsp;P. Kunze,&nbsp;M. Kuss,&nbsp;M. Kuźniak,&nbsp;M. Kuzwa,&nbsp;M. La Commara,&nbsp;M. Lai,&nbsp;E. Le Guirriec,&nbsp;E. Leason,&nbsp;A. Leoni,&nbsp;L. Lidey,&nbsp;M. Lissia,&nbsp;L. Luzzi,&nbsp;O. Lychagina,&nbsp;O. Macfadyen,&nbsp;I. N. Machulin,&nbsp;S. Manecki,&nbsp;I. Manthos,&nbsp;A. Marasciulli,&nbsp;G. Margutti,&nbsp;S. M. Mari,&nbsp;C. Mariani,&nbsp;J. Maricic,&nbsp;M. Martinez,&nbsp;C. J. Martoff,&nbsp;G. Matteucci,&nbsp;K. Mavrokoridis,&nbsp;E. Mazza,&nbsp;A. B. McDonald,&nbsp;S. Merzi,&nbsp;A. Messina,&nbsp;R. Milincic,&nbsp;S. Minutoli,&nbsp;A. Mitra,&nbsp;J. Monroe,&nbsp;E. Moretti,&nbsp;M. Morrocchi,&nbsp;T. Mroz,&nbsp;V. N. Muratova,&nbsp;M. Murphy,&nbsp;M. Murra,&nbsp;C. Muscas,&nbsp;P. Musico,&nbsp;R. Nania,&nbsp;M. Nessi,&nbsp;G. Nieradka,&nbsp;K. Nikolopoulos,&nbsp;E. Nikoloudaki,&nbsp;J. Nowak,&nbsp;K. Olchanski,&nbsp;A. Oleinik,&nbsp;V. Oleynikov,&nbsp;P. Organtini,&nbsp;A. Ortiz de Solrzano,&nbsp;M. Pallavicini,&nbsp;L. Pandola,&nbsp;E. Pantic,&nbsp;E. Paoloni,&nbsp;D. Papi,&nbsp;G. Pastuszak,&nbsp;G. Paternoster,&nbsp;P. A. Pegoraro,&nbsp;K. Pelczar,&nbsp;R. Perez,&nbsp;V. Pesudo,&nbsp;S. Piacentini,&nbsp;N. Pino,&nbsp;G. Plante,&nbsp;A. Pocar,&nbsp;M. Poehlmann,&nbsp;S. Pordes,&nbsp;P. Pralavorio,&nbsp;E. Preosti,&nbsp;D. Price,&nbsp;S. Puglia,&nbsp;M. Queiroga Bazetto,&nbsp;F. Ragusa,&nbsp;Y. Ramachers,&nbsp;A. Ramirez,&nbsp;S. Ravinthiran,&nbsp;M. Razeti,&nbsp;A. L. Renshaw,&nbsp;M. Rescigno,&nbsp;S. Resconi,&nbsp;F. Retiere,&nbsp;L. P. Rignanese,&nbsp;A. Rivetti,&nbsp;A. Roberts,&nbsp;C. Roberts,&nbsp;G. Rogers,&nbsp;L. Romero,&nbsp;M. Rossi,&nbsp;A. Rubbia,&nbsp;D. Rudik,&nbsp;M. Sabia,&nbsp;P. Salomone,&nbsp;O. Samoylov,&nbsp;S. Sanfilippo,&nbsp;D. Santone,&nbsp;R. Santorelli,&nbsp;E. Moura Santos,&nbsp;C. Savarese,&nbsp;E. Scapparone,&nbsp;F. G. Schuckman II,&nbsp;G. Scioli,&nbsp;D. A. Semenov,&nbsp;A. Sheshukov,&nbsp;M. Simeone,&nbsp;P. Skensved,&nbsp;M. D. Skorokhvatov,&nbsp;O. Smirnov,&nbsp;T. Smirnova,&nbsp;B. Smith,&nbsp;A. Sotnikov,&nbsp;F. Spadoni,&nbsp;M. Spangenberg,&nbsp;R. Stefanizzi,&nbsp;A. Steri,&nbsp;V. Stornelli,&nbsp;S. Stracka,&nbsp;S. Sulis,&nbsp;A. Sung,&nbsp;C. Sunny,&nbsp;Y. Suvorov,&nbsp;A. M. Szelc,&nbsp;O. Taborda,&nbsp;R. Tartaglia,&nbsp;A. Taylor,&nbsp;J. Taylor,&nbsp;G. Testera,&nbsp;K. Thieme,&nbsp;A. Thompson,&nbsp;S. Torres-Lara,&nbsp;A. Tricomi,&nbsp;E. V. Unzhakov,&nbsp;M. Van Uffelen,&nbsp;T. Viant,&nbsp;S. Viel,&nbsp;A. Vishneva,&nbsp;R. B. Vogelaar,&nbsp;J. Vossebeld,&nbsp;B. Vyas,&nbsp;M. Wada,&nbsp;M. Walczak,&nbsp;Y. Wang,&nbsp;H. Wang,&nbsp;S. Westerdale,&nbsp;L. Williams,&nbsp;R. Wojaczyski,&nbsp;M. M. Wojcik,&nbsp;M. Wojcik,&nbsp;T. Wright,&nbsp;Y. Xie,&nbsp;C. Yang,&nbsp;J. Yin,&nbsp;A. Zabihi,&nbsp;P. Zakhary,&nbsp;A. Zani,&nbsp;Y. Zhang,&nbsp;T. Zhu,&nbsp;A. Zichichi,&nbsp;G. Zuzel,&nbsp;M. P. Zykova,&nbsp;DarkSide-20k Collaboration","doi":"10.1140/epjc/s10052-025-14196-9","DOIUrl":"10.1140/epjc/s10052-025-14196-9","url":null,"abstract":"<div><p>DarkSide-20k is a novel liquid argon dark matter detector currently under construction at the Laboratori Nazionali del Gran Sasso (LNGS) of the Istituto Nazionale di Fisica Nucleare (INFN) that will push the sensitivity for Weakly Interacting Massive Particle (WIMP) detection into the neutrino fog. The core of the apparatus is a dual-phase Time Projection Chamber (TPC), filled with 50 tonnes of low radioactivity underground argon (UAr) acting as the WIMP target. NUV-HD-cryo Silicon Photomultipliers (SiPM)s designed by Fondazione Bruno Kessler (FBK) (Trento, Italy) were selected as the photon sensors covering two <span>(10.5~text {m}^2)</span> Optical Planes, one at each end of the TPC, and a total of <span>(5~text {m}^2)</span> photosensitive surface for the liquid argon veto detectors. This paper describes the Quality Assurance and Quality Control (QA/QC) plan and procedures accompanying the production of FBK NUV-HD-cryo SiPM wafers manufactured by LFoundry s.r.l. (Avezzano, AQ, Italy). SiPM characteristics are measured at 77 K at the wafer level with a custom-designed probe station. As of March 2025, 1314 of the 1400 production wafers (94% of the total) for DarkSide-20k were tested. The wafer yield is <span>(93.2pm 2.5)</span>%, which exceeds the 80% specification defined in the original DarkSide-20k production plan. \u0000\u0000\u0000</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-14196-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Modeling the impact of harmful algal blooms on aquatic life and human health","authors":"Jyoti Maurya,&nbsp;A. K. Misra","doi":"10.1140/epjp/s13360-025-06295-z","DOIUrl":"10.1140/epjp/s13360-025-06295-z","url":null,"abstract":"<div><p>Harmful algal blooms pose a significant and growing threat to aquatic ecosystems worldwide, largely driven by excessive nutrient enrichment. These blooms disrupt ecological balance, degrade water quality, and have profound socioeconomic consequences. To address this pressing issue, this study presents a mathematical model that captures the complex interplay between nutrients, algae, fish, and human population. The model incorporates critical ecological processes, including algae growth dynamics, nutrient cycling, predation of algae by fish, and the detrimental effects of harmful algal blooms on fish and human population. By integrating these interactions, the model explores the feedback mechanisms that govern the ecosystem’s stability and resilience. Using bifurcation analysis, the model identifies key thresholds and critical points that determine shifts in the system’s dynamical behavior, revealing the presence of saddle-node, transcritical, and Hopf bifurcations. These findings highlight the delicate balance within aquatic ecosystems and the potential for abrupt transitions between stable states under varying environmental conditions. This study provides a robust theoretical foundation for understanding the mechanisms driving harmful algal blooms’ formation and persistence. It emphasizes the need for integrated management strategies that address both ecological and human dimensions, offering insights into sustainable approaches for mitigating the impacts of harmful algal blooms.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944274","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}

{"title":"Erraticity analysis of multiparticle production in pp collisions at (sqrt{s}=) 2.76, 7 & 13 TeV","authors":"Tumpa Biswas,&nbsp;Dibakar Dhar,&nbsp;Sanjib Kumar Manna,&nbsp;Dipak Ghosh,&nbsp;Prabir Kumar Haldar","doi":"10.1140/epjp/s13360-025-06327-8","DOIUrl":"10.1140/epjp/s13360-025-06327-8","url":null,"abstract":"<div><p>The erraticity behavior of multiparticle production is investigated in <i>pp</i> collisions at <span>(sqrt s = 2.76,7;&amp; ;13)</span> TeV using the Monte-Carlo event generator PYTHIA 8.3. The entropy indices are determined in the framework of the erraticity approach. An increase in the entropy index has been observed, potentially arising from various internal physics mechanisms modeled in PYTHIA, such as multiple parton interactions, color reconnection and statistical fluctuations may also contribute to this effect. The increasing value of <span>(tilde{mu _{q}})</span> observed in PYTHIA-generated data suggests that the multiparticle production exhibits chaotic behavior. Furthermore, when all the measures are taken together including CERN SPS energies, they collectively give a strong indication that the QCD branching process is chaotic.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944276","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}

{"title":"Rotating spacetimes with a free scalar field in four and five dimensions","authors":"José Barrientos,&nbsp;Christos Charmousis,&nbsp;Adolfo Cisterna,&nbsp;Mokhtar Hassaine","doi":"10.1140/epjc/s10052-025-14282-y","DOIUrl":"10.1140/epjc/s10052-025-14282-y","url":null,"abstract":"<div><p>We construct explicit rotating solutions in Einstein’s theory of relativity with a minimally coupled free scalar field rederiving and finding solutions in four or five spacetime dimensions. These spacetimes describe, in particular, the back-reaction of a free scalar field evolving in a Kerr spacetime. Adapting the general integrability result obtained many years ago from Eriş–Gürses to simpler spherical coordinates, we present a method for rederiving the four-dimensional Bogush–Gal’tsov solution. Furthermore, we find the five-dimensional spacetime featuring a free scalar with two distinct angular momenta. In the static limit, these five-dimensional geometries provide higher-dimensional extensions of the Zipoy–Voorhees spacetime. Last but not least, we obtain the four-dimensional version of a Kerr–Newman-NUT spacetime endowed with a free scalar, where the scalar field’s radial profile is extended to incorporate dependence on the polar angular coordinate. Our results offer a comprehensive analysis of several recently proposed four-dimensional static solutions with scalar multipolar hair, representing a unified study of spacetimes with a free scalar field in both four and five dimensions under the general integrability result of Eriş–Gürses.\u0000\u0000</p></div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"85 5","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-025-14282-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Spectroscopic analysis of singly heavy pentaquarks in the symmetric 15-plet representation using phenomenological models","authors":"Ankush Sharma,&nbsp;Alka Upadhyay","doi":"10.1140/epjp/s13360-025-06328-7","DOIUrl":"10.1140/epjp/s13360-025-06328-7","url":null,"abstract":"<div><p>We analyze the ground-state pentaquark structures with a single heavy quark (<span>(qqqqbar{Q})</span>) using various phenomenological models. The recent observations of singly heavy tetraquark structures at LHCb serve as a significant motivation for this investigation. We studied the symmetric 15-plet configuration of SU(3) flavor representation with the spin-parity assignment of <span>(5/2^-)</span>, representing the symmetric spin state for the pentaquark systems. We employed an extended Gursey–Radicati mass formula and an effective mass scheme to compute the mass spectra of pentaquark states. Additionally, the methodology of the screened charge scheme is introduced to calculate the magnetic moment assignments, specifically for configurations involving both charm and bottom quarks. We also proposed the potential production modes originating from the weak decay of heavy baryons. We identified the strong decay channels where pentaquark transitions into a light baryon and a heavy meson. Our analysis of mass spectra, magnetic moments, and possible strong decay channels helps us to explore the inner structure of pentaquarks and their underlying quark dynamics. This work not only augments the theoretical frameworks used to describe such systems but is also helpful for future experimental pursuits at facilities like LHCb, fostering further experimental validations and discoveries in heavy quark spectroscopy.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938478","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}

{"title":"Cu-Zn bimetal modification of MXene for efficient electrocatalytic carbon dioxide reduction of formic acid","authors":"A. Gengxiong,&nbsp;Yonghui Wang,&nbsp;Liang Wu,&nbsp;Yan Ma,&nbsp;Shangwen Ma,&nbsp;Zuqi Li,&nbsp;Keliang Wu","doi":"10.1007/s00339-025-08580-1","DOIUrl":"10.1007/s00339-025-08580-1","url":null,"abstract":"<div><p>Efficient methods for carbon dioxide reduction reactions (ECO₂RR) utilizing electrical energy are of paramount importance, yet the design of catalysts remains a pivotal factor in attaining highly effective ECO₂RR processes. To circumvent the reliance on precious metals, it is imperative to attain a high degree of selectivity towards formic acid (HCOOH) through the regulation of Cu metal. Zinc (Zn), being cost-effective and possessing favorable binding energy towards *COOH, emerges as a promising alternative. To further augment the catalytic activity, we employed the electrostatic self-adsorption capability of Ti₃C₂T_xMXene to anchor a Cu-Zn bimetallic structure onto its surface. The results demonstrate that the Cu-Zn bimetallic structure is anchored to the Ti vacancies and coupled with the surface functional groups of MXene. The incorporation of Zn markedly enhances the electron transfer to Cu, leading to a notable 87% selectivity for formic acid and a remarkable stability of 16 h. This study elucidates a novel approach for the modification of MXene-based bimetallic catalysts, thereby establishing a foundation for the development of an efficient ECO₂RR process.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel image encryption scheme based on elliptic curves, Hilbert matrices and chaotic maps for better visual sentimental performance of telecommunication systems","authors":"Saba Inam,&nbsp;Shamsa Kanwal,&nbsp;Sania Rashid,&nbsp;Fahima Hajjej,&nbsp;Monia Hamdi","doi":"10.1140/epjp/s13360-025-06326-9","DOIUrl":"10.1140/epjp/s13360-025-06326-9","url":null,"abstract":"<div><p>Chaos-based image encryption techniques have gained attention due to their potential for generating highly complex and unpredictable encryption algorithms. These algorithms leverage chaotic systems’ attributes, which are sensitive to initial conditions and exhibit complex, non-repeating behavior, enabling them attractive candidate for encryption purposes. The intricate dynamics of chaotic systems makes it difficult for intruders to predict or crack the encryption without the proper decryption key. The use of piecewise linear chaotic map for image permutation introduces nonlinearity and randomness to the encryption process. Additionally, utilizing an elliptic curve and a Hilbert matrix for generating the encryption key brings a different layer of complexity. The chaotic logistic map further contributes to the encryption process by generating a sequence crucial for diffusion of pixels. To guarantee that the suggested encryption mechanism is robust and secure, various analyses like information entropy, statistical analysis of histograms, pixel correlation and sensitivity analysis are carried out. Through the result of these analyses, it is evident that this proposed technique is a promising approach to address security concerns in transmitting images over public networks. The proposed work attains high NPCR (99.63%), UACI (33.47%) and entropy (7.9991) that ensures resilience against statistical and differential attacks. Comparing the suggested study with the literature existing research shows that it is a reliable and safe real-time image encryption system.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938477","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}

{"title":"Study on friction behavior of HMX crystals based on peridynamic theory","authors":"Mingchen Wang,&nbsp;Pengzhe Zhu,&nbsp;Jiacheng Rong,&nbsp;Yimeng Xu,&nbsp;Xiao Yun","doi":"10.1007/s00339-025-08559-y","DOIUrl":"10.1007/s00339-025-08559-y","url":null,"abstract":"<div><p>The friction behavior of HMX crystals has attracted significant attention since friction is proven to be a critical factor in causing local heating and even accidental ignition. But the friction mechanisms of HMX single crystals remain elusive. Classical continuum mechanics faces challenges in modeling discontinuities. In contrast, peridynamic (PD) theory has emerged as an effective approach for investigating discontinuous phenomena such as damage evolution. In this study, a frictional contact model for HMX crystals is developed based on the state-based PD theory. The effects of indenter shape, size, scratching depth and scratching velocity on the tribological response of HMX crystals, particularly regarding damage and crack propagation, are investigated. The results indicate that the tribological response is insensitive to changes in scratching velocity. As the scratching depth increases, longer lateral cracks develop for both the spherical and conical indenters, but the median crack propagation depth increases for only the spherical indenter. And the combined action of radial and lateral cracks plays a crucial role in debris peeling. It is also found that increasing the diameter of the spherical indenter results in more shear cracks and rougher scratch surfaces, without affecting the depth of tensile crack propagation. In addition, the normalized material removal volume and its depth sensitivity are greater for the spherical indenter than for the conical indenter. These findings provide valuable insights into the friction mechanisms of the energetic crystal HMX.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the induced behaviour of multilayer bamboo basket-structured carbon materials","authors":"Yuliang Yin,&nbsp;Danhui Zhang,&nbsp;Houbo Yang,&nbsp;Wenqiang Hu,&nbsp;Xiangfei Ji,&nbsp;Dengbo Zhang,&nbsp;Ruquan Liang","doi":"10.1007/s00339-025-08573-0","DOIUrl":"10.1007/s00339-025-08573-0","url":null,"abstract":"<div><p>There are many carbon materials, 0-dimensional fullerene, one-dimensional carbon nanotubes, two-dimensional graphene, graphyne, and so on. In this manuscript, a novel type of carbon, i.e., carbon with a bamboo basket structure, is used. The bamboo basket-structured carbon is used as an inducer to induce a self-curling structure of graphene nanoribbons. It was found that rollovers of multilayered bamboo basket-structured carbon successfully induced the self-assembly of graphene nanoribbons. Van der Waals forces and π-π interactions play an important role in the whole process. In addition, a series of factors, such as the length and width of graphene nanoribbons, the number of layers of rosettes, and the temperature, were explored for their influence on the final conformation of the composites. The results of this manuscript will play an important theoretical support for the research on the broadening of the application of novel carbon materials in various fields.</p></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"131 6","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}