The European Physical Journal Plus最新文献

{"title":"Magnon blockade and entanglement in a hybrid magnon-photon-phonon-SQ system","authors":"S. A. S. Musavi,&nbsp;M. K. Tavassoly,&nbsp;M. Setodeh Kheirabady","doi":"10.1140/epjp/s13360-025-06892-y","DOIUrl":"10.1140/epjp/s13360-025-06892-y","url":null,"abstract":"<div><p>We investigate a hybrid optomagnonic system consisting of a lossy microwave cavity coupled to a mirror, hosting a superconducting qubit (SQ) and a yttrium–iron–garnet (YIG) sphere. The system features indirect magnon–SQ interactions mediated by cavity fields, while the cavity field directly couples to magnons, the SQ, and phonons. By deriving an effective Hamiltonian and solving the Lindblad master equation (under dissipative conditions), we analyze magnon blockade, entanglement dynamics between the magnon and other constituent parts of the system, as well as the magnon fidelity over time. Variations in photon–phonon and photon–magnon coupling strengths reveal that stronger photon–magnon coupling amplifies magnon blockade, generating pronounced non-classical signatures. Further investigations on photon–phonon coupling, photon–SQ coupling, magnon/phonon dissipation, and phonon frequency demonstrate that photon–phonon interactions and magnon dissipation critically enhance steady-state as well as time-dependent entanglement between magnons, photons, and phonons. Reducing phonon dissipation, tuning phonon frequency, and increasing photon–phonon/magnon couplings effectively improve entanglement robustness across both transient and equilibrium regimes. Finally, phonon dissipation on the magnon fidelity is presented, highlighting the system potential for high-precision quantum state control. These results provide comprehensive insights into optimizing quantum correlations and coherence in hybrid optomagnonic platforms for quantum information applications.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 10","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196245","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":"Models for differential cross section in proton-proton scattering and their implications at ISR and LHC energies","authors":"Muhammad Saad Ashraf,&nbsp;Nosheen Akbar,&nbsp;Sarwat Zahra","doi":"10.1140/epjp/s13360-025-06859-z","DOIUrl":"10.1140/epjp/s13360-025-06859-z","url":null,"abstract":"<div><p>A few composite exponential models for the differential cross section (<span>(frac{dsigma }{d|t|})</span>) are proposed to analyse the proton-proton (<i>pp</i>) elastic scattering at several energies. The parameters of these proposed models are found by fitting these models to the data for <i>pp</i> elastic differential cross section reported at CERN-ISR, LHC, and extrapolated energies of other models. Plots of the data have important features, including dip-bump structure and shrinkage of the forward peak. Dips produced by our proposed models overlap the dips produced by data for a broad energy range of <span>(sqrt{s})</span> = 23 GeV, 23.5 GeV, 27.23 GeV, 30.7 GeV, 44.7 GeV, 52.8 GeV, 62.5 GeV, 200 GeV, 800 GeV, 2.76 TeV, 7 TeV, 8 TeV, 13 TeV, 14 TeV, 15 TeV, and 28 TeV. Employing these proposed models, elastic cross section <span>({(sigma _{text {el}})})</span>, inelastic cross section <span>({(sigma _{text {inel}})})</span>, and total cross section <span>({(sigma _{text {tot}})})</span> are calculated at all the energies. Calculated results are compared with experimental data and theoretical results of other models. Implications of these results (obtained by models) related to the structure and dynamics of the proton are discussed. The findings of this study emphasize the significance of combining theoretical and phenomenological approaches to accurately describe <i>pp</i> elastic scattering at high energies and provide significant information to future LHC experiments for the investigation of the differential cross section.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 10","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196243","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":"New deformed boson algebra involving reflection operator and its implications to thermostatistics","authors":"Won Sang Chung,&nbsp;Abdullah Algin","doi":"10.1140/epjp/s13360-025-06875-z","DOIUrl":"10.1140/epjp/s13360-025-06875-z","url":null,"abstract":"<div><p>After introducing the algebraic and representative properties of the extended Weyl–Heisenberg algebra along with its special case containing the Wigner algebra, a new deformed boson algebra involving the reflection operator is proposed. Such an algebra differs from the other well-known deformed particle algebras in the literature so that its number operator spectrum constitutes a novel deformed number called <span>(nu )</span>-number, which is changed for both even <i>n</i> and odd <i>n</i> in its energy levels. As physical applications of the quantum algebra developed here, the thermostatistical properties of a gas model of the <span>(nu )</span>-deformed bosons and the blackbody radiation phenomena covering the <span>(nu )</span>-deformed photon gas are studied in detail. Another application is carried out onto lattice oscillations via the Debye crystal model containing the <span>(nu )</span>-deformed phonons. The effects of <span>(nu )</span>-deformation onto the low-temperature behavior of the model specific heat of the <span>(nu )</span>-deformed Debye solid are explored and are compared with the results of both the standard phonon gas and the ones with the non-extensive Tsallis statistics. Finally, possible implications of our results on other application areas of research such as strongly correlated quantum matter and star formation in cosmological systems are concisely discussed.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 10","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196246","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":"Timepix3-based detector: a novel approach for evaluating (^{10})B concentration and spatial distribution in boron neutron capture therapy","authors":"A. Tamburrino,&nbsp;G. Claps,&nbsp;N. Protti,&nbsp;G. Romanelli,&nbsp;V. De Leo,&nbsp;F. Cordella,&nbsp;D. Pacella,&nbsp;S. Altieri,&nbsp;F. Murtas","doi":"10.1140/epjp/s13360-025-06860-6","DOIUrl":"10.1140/epjp/s13360-025-06860-6","url":null,"abstract":"<div><p>In boron neutron capture therapy (BNCT) research, precisely determining the concentration and distribution of <span>(^{10})</span>B is essential for optimizing treatment efficacy. Over the years, various methods have been developed to measure these two quantities; in particular, at the University of Pavia, two primary techniques have been used: alpha spectrometry to quantify the concentration of <span>(^{10})</span>B and neutron autoradiography to image its distribution. However, both methods have notable limitations. Alpha spectrometry returns the mean bulk <span>(^{10})</span>B concentration and requires a quite complex process to correct the mean <span>(^{10})</span>B concentration in the case of a heterogeneous sample. However, neutron autoradiography results in sample destruction and generally requires long processing times to obtain the concentration measure. To overcome these limitations, this work introduces an innovative method based on Timepix3 (TPX3) detectors. This method employs a TPX3 quad detector, which provides high spatial and temporal resolution, enabling the simultaneous measurement of both quantities down to tissue samples and cell pellets during the same irradiation session. This ensures real-time imaging of the 2D boron distribution. Experimental measurements were performed at the Laboratory of Applied Nuclear Energy (L.E.N.A.) of the University of Pavia, using biological tissue samples and the highly thermalized neutron beam from the Prompt Gamma Neutron Activation Analysis (PGNAA) facility housed at the Pavia TRIGA Mark II research nuclear reactor. The results demonstrated a high sensitivity to evaluate the distribution of <span>(^{10})</span>B at boron concentrations slightly above those commonly found in tissues treated with BNCT. Consequently, the presented system deserves attention and further study as a potentially valuable tool in BNCT research. It shows great promise at both the basic and the preclinical levels, where it can contribute to the development of new boronated compounds, and in the clinical setting, where it can help optimize the treatment plan. The system provides essential information on the quantity and distribution of the capture agent obtained in a short time frame, without the need to destroy the sample subjected to analysis.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 10","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196247","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":"Mitigating atmospheric carbon dioxide through ocean-based carbon capture technologies: a delay mathematical model","authors":"Maitri Verma,&nbsp;Cherie Gautam","doi":"10.1140/epjp/s13360-025-06881-1","DOIUrl":"10.1140/epjp/s13360-025-06881-1","url":null,"abstract":"<div><p>The ocean serves as the largest natural sink for atmospheric carbon dioxide (<span>(CO _2)</span>), playing a vital role in regulating global climate. Ocean-based carbon removal technologies seek to enhance this natural capacity, while shellfish farming offers a complementary nature-based pathway to sequester carbon dioxide. The success of these strategies, however, depends on effective budget allocation. In this study, we develop a nonlinear mathematical model to examine how budget allocation for ocean-based carbon removal technologies and shellfish farming, along with delays between investment and impact, influences atmospheric <span>(CO _2)</span> dynamics. The model considers that a portion of total budget is allocated for the implementation of ocean-based carbon removal technologies, while the remainder is invested in shellfish farming. The formulated model is qualitatively analyzed to determine the system’s behavior in the long run. Results show that increasing the efficacy of allocated budget in enhancing oceanic <span>(CO _2)</span> uptake and shellfish production can substantially lowers atmospheric <span>(CO _2)</span> levels. However, if the budget growth rate exceeds a critical threshold, the interior equilibrium loses stability through a Hopf-bifurcation, giving rise to limit cycle oscillations. Moreover, it is noticed that the amplitude of these oscillations reduces with increasing the efficacy of budget to enhance oceanic <span>(CO _2)</span> uptake, and above a critical level, these oscillations die out and system gets stabilized to a positive equilibrium state. Furthermore, we find that the stability of the interior equilibrium is highly sensitive to delays between budget allocation and the resulting increase in oceanic <span>(CO _{2})</span> absorption and shellfish production. Longer delays trigger multiple stability switches, leading to complex dynamic behavior. Numerical simulations are presented to support and validate the theoretical findings, providing insights into the dynamic behavior of the proposed model.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 10","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196244","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":"Detuning and decoherence effects on atomic entanglement and coherence induced by nonlinear atom–field interactions","authors":"A.-B. A. Mohamed,&nbsp;M. Hashem,&nbsp;F. M. Aldosari,&nbsp;H. A. Hessian","doi":"10.1140/epjp/s13360-025-06882-0","DOIUrl":"10.1140/epjp/s13360-025-06882-0","url":null,"abstract":"<div><p>This study investigates the intricate dynamics of entanglement, coherence, and purity in a two-atom-field interaction system under varying conditions including decoherence, field structure, detuning, and nonlinearity. By analyzing eight distinct scenarios involving coherent and even coherent field states, with and without detuning, in the presence or absence of Kerr type nonlinearity and phase decoherence, the study reveals how each factor individually and in combination governs the preservation or degradation of fundamental quantum properties. Under ideal conditions without decoherence, the system exhibits rich and structured quantum dynamics characterized by sustained entanglement, persistent coherence, and high purity. However, even minimal phase decoherence substantially deteriorates these features, highlighting the inherent fragility of quantum correlations. The field structure especially the photon number distribution in coherent and even coherent states adds complexity that enhances nonclassical effects but simultaneously increases susceptibility to environmental noise. Detuning disrupts atom field resonance, diminishing quantum coherence and entanglement, while Kerr type nonlinearity introduces irregular revival patterns that heighten the system’s sensitivity to decoherence. Additionally, small initial field intensity results in weak and fragmented quantum behavior, even in the absence of phase decoherence. Furthermore, introducing nonlinear atom field coupling particularly of the Kerr like form significantly alters the quantum dynamics. Even under resonant conditions, concurrence, first-order coherence, and purity are highly sensitive to both detuning and decoherence.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210963","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":"A computational study of light-induced superimposed mechanical and dipolar effects","authors":"Fabio Marangi,&nbsp;Giulia Simoncini,&nbsp;Chiara Florindi,&nbsp;Francesco Lodola,&nbsp;Giuseppe Maria Paternò,&nbsp;Guglielmo Lanzani","doi":"10.1140/epjp/s13360-025-06866-0","DOIUrl":"10.1140/epjp/s13360-025-06866-0","url":null,"abstract":"<div><p>Light-sensitive molecules provide a powerful means to control cellular excitability without genetic modification. Among them, the amphiphilic membrane targeting azobenzene Ziapin2 has emerged as a versatile photo-switch able to modulate membrane potential. Previous studies have attributed its action mainly to an opto-mechanical effect. However, azobenzenes are known to undergo significant light-induced dipole changes, raising the possibility of additional electrical contributions. Here, we combine experimental data and numerical modeling to investigate this dual mechanism in Ziapin2. Our analysis shows that beyond capacitance modulation, a substantial increase in molecular dipole moment (&gt; 6D) can shift membrane surface potential, partially counteracting the hyperpolarizing effect. A model with time-varying surface potential captures key features of published responses and shows that polarity is governed by the membrane interface at which the photo-dipole is expressed, not by the dipole change alone. This combined framework provides a more complete description of Ziapin2 action and enables prospective design of next-generation molecules with tailored selective depolarizing or hyperpolarizing response.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjp/s13360-025-06866-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211019","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}

{"title":"Reflection phenomena of plane waves in double-porosity fractional thermoelastic half-space under initial stress and rotation","authors":"Deepak Kumar,&nbsp;Brijendra Paswan","doi":"10.1140/epjp/s13360-025-06894-w","DOIUrl":"10.1140/epjp/s13360-025-06894-w","url":null,"abstract":"<div><p>This study investigates the reflection of two-dimensional plane waves in an initially stressed, rotating orthotropic half-space with double porosity formulated within the framework of the Lord–Shulman generalized thermoelasticity theory under fractional-order derivative. Five distinct reflected waves are considered: quasi longitudinal-P (qP), quasi shear vertical (qSV), voids of type-I and type-II, and quasi-thermal (qT). The governing equations of motion and constitutive relations are derived leading to characteristic equations for phase velocity and attenuation coefficients. Analytical expressions for reflection coefficients and energy ratios are also obtained which provide a comprehensive description of the reflection phenomena. Numerical simulations performed using Python demonstrate that phase velocity, reflection coefficients, and energy ratios depend strongly on frequency, wave number, rotation, initial stress, and fractional-order parameters. Notably, initial stress suppresses low-frequency propagation, reducing qP-wave velocities by approximately 14–<span>(18%)</span>, while enhancing high-frequency propagation with a 9–<span>(12%)</span> increase. These results underscore the essential influence of double porosity and fractional-order thermoelasticity on wave behavior and highlight the study’s relevance to applications in geophysics, seismic wave analysis, and materials engineering.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210564","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":"A radial basis Bayesian regularization procedure for the Lassa virus mathematical model","authors":"Zulqurnain Sabir,&nbsp;Abdallah Abou Assaad,&nbsp;Ali Alkak,&nbsp;Mustafa Bayram","doi":"10.1140/epjp/s13360-025-06891-z","DOIUrl":"10.1140/epjp/s13360-025-06891-z","url":null,"abstract":"<div><p>The purpose of current research investigations is to perform the numerical investigations of the Lassa virus model by using the computing stochastic paradigms. The Lassa virus was identified first in Nigeria, and 20 years later, the mathematical Lassa virus model has been developed by including different factors such as population of human to human, rodent to human, and environmental influences. A single hidden layer neural network structure using a radial basis function, fifteen neurons, and optimization with Bayesian regularization is presented to solve the Lassa virus mathematical model. The construction of the dataset is performed by the explicit Runge–Kutta scheme, which reduces mean square error by dividing the statistics into training as 74%, while 14% for authentication and 12% for testing. The correctness of proposed scheme is authenticated by solving three different model cases including comparison of the results that are 6–8 decimal places, best training performances around 10⁻¹¹–10⁻¹⁴, and absolute errors found as 10⁻⁰⁶–10⁻⁰⁸. The reliability of the designed stochastic neural network is obtained by using different tests including correlation, state transitions, and error histograms.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211021","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":"AI-integrated adaptive MANET framework for IoT-driven healthcare systems: enhancing scalability, security, and real-time communication","authors":"M. Venkata Krishna Reddy,&nbsp;Sivaneasan Bala Krishnan,&nbsp;Amjan Shaik,&nbsp;Prasun Chakrabarti","doi":"10.1140/epjp/s13360-025-06863-3","DOIUrl":"10.1140/epjp/s13360-025-06863-3","url":null,"abstract":"<div><p>The increasing reliance on real-time, reliable communication in healthcare-focused IoT environments has amplified the importance of secure and adaptive Mobile Ad Hoc Networks (MANETs). Traditional MANET routing protocols, such as AODV, DSR, and OLSR, often fall short in addressing the dynamic nature of healthcare applications due to their limited adaptability, lack of integrated security, and insufficient Quality of Service guarantees. Existing machine learning-based solutions provide partial improvements but frequently overlook trust modeling and energy efficiency in highly mobile or resource-constrained environments. To address these challenges, this paper proposes HealthMANET-AI, an AI-integrated adaptive MANET framework for IoT-driven healthcare systems, centered around a novel model called MedRouteNet. MedRouteNet utilizes Q-learning-based reinforcement learning to dynamically determine optimal routing paths, incorporating behavior-based trust evaluation and quality of service constraints, including latency, delivery ratio, and energy consumption. The model adapts to network changes in real-time, penalizes misbehaving nodes, and enhances data delivery reliability in hostile or unstable conditions. Experimental evaluation using NS-3 and PyTorch shows that HealthMANET-AI outperforms conventional protocols and baseline models in packet delivery ratio (by up to 18%), reduces average delay and jitter, and achieves 92.6% F1-score in malicious node detection. These results validate the robustness, scalability, and effectiveness of the proposed framework in ensuring secure, low latency, and energy-efficient communication, making it highly suitable for mission-critical applications such as remote patient monitoring, mobile diagnostics, and emergency healthcare response. The proposed model offers a substantial advancement toward intelligent, secure, and context-aware MANETs for next-generation IoT healthcare systems.</p></div>","PeriodicalId":792,"journal":{"name":"The European Physical Journal Plus","volume":"140 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211029","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}