Chinese Journal of Physics最新文献

{"title":"Determination of asymptotic normalization coefficients based on the dispersive optical model","authors":"O.V. Bespalova ,&nbsp;L.D. Blokhintsev ,&nbsp;A.A. Klimochkina ,&nbsp;D.A. Savin","doi":"10.1016/j.cjph.2025.07.020","DOIUrl":"10.1016/j.cjph.2025.07.020","url":null,"abstract":"<div><div>A method for determining asymptotic normalization coefficients for removing nucleons from nuclei is proposed. It is based on the use of the dispersive optical model potential. Within the method, the strength parameter of the Hartree–Fock type potential at the Fermi energy is the only one fitting parameter. It was found that adjusting this parameter allows us to achieve a coincidence of the calculated binding energies with the experimental ones accurately enough. Specific calculations were carried out for ¹⁷O, ¹⁷F, ⁴¹Ca, and ⁴¹Sc nuclei. An acceptable agreement with the results of other works, which are characterized by a noticeable spread, was achieved.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 991-997"},"PeriodicalIF":4.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842820","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}

{"title":"An improved semi-quantum secret sharing protocol with enhanced verification to counter man-in-the-middle attacks","authors":"Chun-Wei Yang ,&nbsp;Pei-Yu Liu ,&nbsp;Chia-Wei Tsai ,&nbsp;Jason Lin","doi":"10.1016/j.cjph.2025.07.032","DOIUrl":"10.1016/j.cjph.2025.07.032","url":null,"abstract":"<div><div>Semi-quantum secret sharing (SQSS) is an essential branch of semi-quantum cryptography. Unlike conventional quantum cryptographic protocols, SQSS does not require all participants to possess quantum capabilities, thereby simplifying implementation. This paper identifies a critical vulnerability in Li et al.’s SQSS protocol, which makes it susceptible to man-in-the-middle attacks during eavesdropping. To address this issue, we propose a secure SQSS protocol incorporating an enhanced verification mechanism performed by the dealer. This additional step enables the sender to verify the integrity of transmitted particles and detect potential eavesdropping. As a result, the protocol effectively mitigates the risk of man-in-the-middle attacks and ensures the security and completeness of secret message exchange.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 897-904"},"PeriodicalIF":4.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809997","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}

{"title":"QGAN-based data augmentation for hybrid quantum–classical neural networks","authors":"Run-Ze He ,&nbsp;Jun-Jian Su ,&nbsp;Su-Juan Qin ,&nbsp;Zheng-Ping Jin ,&nbsp;Fei Gao","doi":"10.1016/j.cjph.2025.07.017","DOIUrl":"10.1016/j.cjph.2025.07.017","url":null,"abstract":"<div><div>Hybrid Quantum–Classical Neural Networks (HQNNs) have the potential to achieve faster training convergence and higher accuracy than classical neural networks in complex feature spaces. However, data augmentation for quantum machine learning is underexplored due to challenges in generating quantum data and worsening data scarcity. To address this, we integrate Quantum Generative Adversarial Networks (QGANs) with HQNNs, and propose two strategies: a general approach to improve data processing and classification, and a customized strategy that generates samples based on HQNNs’ performance on specific classes. Simulation experiments on the MNIST dataset demonstrate that QGAN outperforms conventional data augmentation methods(random rotation, translation, contrast adjustment) and classical GANs. Compared to deep convolutional GAN, QGAN achieves similar performance with 50% fewer trainable parameters, balancing efficiency and effectiveness. These results highlight the advantages of quantum data augmentation techniques, offering potential solutions for real-world applications such as rare disease diagnosis and endangered species classification.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 1453-1463"},"PeriodicalIF":4.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018994","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}

{"title":"Nonlinear waves and conversion mechanisms for a (3+1)-dimensional shallow water wave equation","authors":"Ming-Yu Qi,&nbsp;Bo Ren","doi":"10.1016/j.cjph.2025.06.035","DOIUrl":"10.1016/j.cjph.2025.06.035","url":null,"abstract":"<div><div>This paper delves into the nonlinear wave dynamics and conversion mechanisms within a (3+1)-dimensional shallow water wave equation. By employing the Hirota bilinear method, the <span><math><mi>N</mi></math></span>-soliton solutions of the equation are constructed first. Through complex conjugate constraints, the first-order breather solution is subsequently generated. Further analysis utilizing characteristic line methods reveals the conversion mechanism between the breather and the soliton. It demonstrates that the breather can transform into various types of nonlinear transformed waves under specific conditions, including quasi-kink soliton, M-shaped soliton, oscillating M-shaped soliton, multi-peak soliton and quasi-periodic soliton. The intrinsic mechanisms of the time-varying characteristics of these transformed waves are investigated by analyzing the distance between characteristic lines. Additionally, based on multi-soliton solutions, the interactions among a soliton, a breather and the transformed waves are explored. These findings not only enrich the theoretical framework of nonlinear wave dynamics in high-dimensional nonlinear equations but also provide a theoretical foundation for predicting nonlinear waves in practical systems.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 459-470"},"PeriodicalIF":4.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724795","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}

{"title":"Electroosmosis modulated physiological fluid propulsion through a non-uniform peristaltic microchannel in bio-microfluidic environment","authors":"Muhammad Roshan,&nbsp;Pramod Kumar Yadav","doi":"10.1016/j.cjph.2025.07.002","DOIUrl":"10.1016/j.cjph.2025.07.002","url":null,"abstract":"<div><div>The present work deals with the mathematical modeling of electroosmosis-aided creeping hydrodynamic propulsion of couple stress fluid due to the combined interaction of electroosmosis and peristalsis mechanisms inside a non-uniform porous microchannel under the influence of an imposed electric field. This model is an estimation of embryological fluid transport through a human uterus where an electric field is applied to induce the artificial fluid transport inside the uterus. Here, walls of the non-uniform microchannel are considered with a surface roughness of a sinusoidal pattern. This flow situation is modeled with the help of the equation of continuity, the momentum balance equation, and the Poisson equation. These governing equations are simplified under the lubrication approximation and Debye–Hückel approximation and solved in MATHEMATICA software for the velocity and electric potential function for exploring the kinematics of the considered flow system. Furthermore, the present model is validated with the available scientific literature to ensure its reliability. Illustrative figures are sketched to investigate the impact of physical parameters such as non-uniformity of the channel, surface roughness, electroosmotic velocity, Debye–Hückel parameter, occlusion, Darcy number, and couple stress parameter on the hydrodynamic quantities. To incorporate the fluid trapping effect and visualize the flow pattern inside the non-uniform microchannel, streamline plots are also sketched for sinusoidal waveforms along with other types of waveforms. This research work is applicable in gaining insights about the physiological propulsion in the human uterus due to fluid–structure interaction, as well as in developing artificial organs, bio-microfluidic devices, and lab-on-a-chip systems.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 343-374"},"PeriodicalIF":4.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721661","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}

{"title":"Thermal convective transport of nanofluids through a microchannel with rough surfaces under electromagnetohydrodynamics and time-periodic pressure gradient","authors":"Jiali Zhang ,&nbsp;Guangpu Zhao ,&nbsp;Umer Farooq ,&nbsp;Jifeng Cui","doi":"10.1016/j.cjph.2025.07.015","DOIUrl":"10.1016/j.cjph.2025.07.015","url":null,"abstract":"<div><div>This study investigates the flow and heat transfer characteristics of nanofluids (water-Al<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>) in a microchannel with rough surfaces, considering the combined effects of electromagnetohydrodynamics (EMHD) and time-periodic pressure gradient. The analytical solutions of the velocity and temperature fields are derived using the separation of variables, Fourier cosine series expansion, combined with the superposition principle and Duhamel’s principle. Based on this, the Nusselt number and entropy generation are further obtained. Through numerical simulations and theoretical analyses, the convective characteristics and irreversibility within the microchannel are explored in relation to various dimensionless parameters. Key findings demonstrate that increasing the nanoparticle volume fraction (<span><math><mi>ϕ</mi></math></span>) to 0.08 enhances convective heat transfer, elevating the Nusselt number (<span><math><mrow><mi>N</mi><mi>u</mi></mrow></math></span>) by 13.37% while reducing total entropy generation by 17.53%. Conversely, a larger roughness parameter (<span><math><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span>) degrades thermal performance, at <span><math><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span>=0.12, total entropy generation increases by 17.04% and <span><math><mrow><mi>N</mi><mi>u</mi></mrow></math></span> decreases by 10.76% relative to <span><math><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span>=0.06, attributed to nanoparticle aggregation and vortex-induced irreversibility. Electromagnetic regulation via the Hartmann number (<span><math><mrow><mi>H</mi><mi>a</mi></mrow></math></span>=7<span><math><mo>∼</mo></math></span>9) suppresses the centreline temperature by 60% but reduces <span><math><mrow><mi>N</mi><mi>u</mi></mrow></math></span> by 35.4%. Meanwhile, the pressure gradient at high dimensionless frequency (<span><math><mi>Ω</mi></math></span>=60) reduces the oscillation period of entropy generation while decreasing total entropy generation through thermal homogenization. These results offer critical insights for optimizing thermal management in microfluidic systems governed by EMHD.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 323-342"},"PeriodicalIF":4.6,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721660","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}

{"title":"Effect of spontaneous emission on a tanh model","authors":"A.D. Kammogne","doi":"10.1016/j.cjph.2025.07.013","DOIUrl":"10.1016/j.cjph.2025.07.013","url":null,"abstract":"<div><div>This study investigates how spontaneous emission affects a tanh model. The impact is characterized by adding an imaginary component and shifting the model, which makes it non-Hermitian. This results in the appearance of light beams during population evolution, mainly influenced by the coupling strength and the shift. We determine the conditions for identifying allowed and forbidden regions in the real energy diagram. We also examine how sweep velocity and time influence the imaginary part of the energy. Additionally, we show the similarities between our model and the Rabi and Landau–Zener models. Throughout the work, we confirm that our theoretical predictions match well with numerical simulations.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 449-458"},"PeriodicalIF":4.6,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144724790","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}

{"title":"Optimal quantum-state tomography via weak value","authors":"Xuanmin Zhu ,&nbsp;Dezheng Zhang ,&nbsp;Runping Gao ,&nbsp;Huan Wang ,&nbsp;Zijiang Luo ,&nbsp;Qun Wei","doi":"10.1016/j.cjph.2025.07.009","DOIUrl":"10.1016/j.cjph.2025.07.009","url":null,"abstract":"<div><div>To improve the efficiency of the state-tomography strategy via weak value, we have searched for the optimal measurement strength between the quantum system being measured and the measuring device. For an arbitrary <span><math><mi>d</mi></math></span>-dimensional quantum system, the optimal measurement strengths used in measuring the real and imaginary parts of the density matrix are obtained. The optimal efficiency of the state tomography has also been studied by using the mean-square error. The minimum mean-square error of the reconstructed density matrix has been derived. The state-tomography strategy studied in this article may be useful in the measurement of the unknown quantum state.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 315-322"},"PeriodicalIF":4.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721659","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}

{"title":"Bouncing cosmological models and cosmic acceleration in f(Q,Lm) theory: A path beyond the big bang singularity","authors":"M. Sharif ,&nbsp;M. Zeeshan Gul ,&nbsp;Rida Mahmood","doi":"10.1016/j.cjph.2025.07.012","DOIUrl":"10.1016/j.cjph.2025.07.012","url":null,"abstract":"<div><div>This manuscript explores bouncing cosmological solutions in the recently developed <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>)</mo></mrow></mrow></math></span> gravity theory, where <span><math><mi>Q</mi></math></span> represents non-metricity and <span><math><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub></math></span> denotes the matter-Lagrangian density. We analyze a spatially flat, homogeneous and isotropic universe with an isotropic matter distribution, considering a specific functional form of <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>)</mo></mrow></mrow></math></span> to examine its impact on cosmic evolution. By solving the modified field equations, we investigate different bounce models and assess their viability through a detailed analysis of cosmological parameters. Our findings indicate that the energy density remains positive while pressure turns negative near the bounce, with the null energy condition being violated in all models around the bounce point except oscillatory bounce model. This violation is a critical requirement for realizing a non-singular cosmological transition. The effective state parameter shifts from phantom-like values <span><math><mrow><mi>ω</mi><mo>&gt;</mo><mo>−</mo><mn>1</mn></mrow></math></span> near the bounce to quintessence-like behavior <span><math><mrow><mo>−</mo><mn>1</mn><mo>&lt;</mo><mi>ω</mi><mo>&lt;</mo><mo>−</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>3</mn></mrow></mfrac></mrow></math></span> at late times, depending on the model parameters. In particular, the symmetric bounce model enters a strong phantom regime signaling cosmic acceleration at late times. These results reinforce the physical viability of stable, singularity-free bounce solutions and suggest that <span><math><mrow><mi>f</mi><mrow><mo>(</mo><mi>Q</mi><mo>,</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>m</mi></mrow></msub><mo>)</mo></mrow></mrow></math></span> gravity could serve as a promising alternative to inflationary cosmology for describing the early universe dynamics.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 411-432"},"PeriodicalIF":4.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721658","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}

{"title":"Nuclear density functional theory and coexistence in 116,118Te","authors":"Amir Jalili ,&nbsp;Ai-Xi Chen","doi":"10.1016/j.cjph.2025.06.048","DOIUrl":"10.1016/j.cjph.2025.06.048","url":null,"abstract":"<div><div>We investigate shape coexistence and band mixing in the transitional nuclei <span><math><msup><mrow></mrow><mrow><mn>116</mn><mo>,</mo><mn>118</mn></mrow></msup></math></span>Te using the Skyrme–Hartree–Fock–Bogolyubov method, a self-consistent realization of nuclear density functional theory, as implemented in the HFODD code. Microscopic calculations of binding energies, charge radii, quadrupole moments, and deformation parameters are performed to establish the structural evolution between the two isotopes. To quantify the interaction between coexisting configurations, we apply a phenomenological two-state mixing model to the lowest <span><math><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> and <span><math><msup><mrow><mn>2</mn></mrow><mrow><mo>+</mo></mrow></msup></math></span> states, which are commonly associated with vibrational and intruder rotational structures. Our results reveal stronger configuration mixing in ¹¹⁸Te, consistent with enhanced collectivity and shape coexistence in the heavier isotope.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"97 ","pages":"Pages 981-990"},"PeriodicalIF":4.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842864","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}