Communications in Theoretical Physics最新文献_第6页

On the existence and stability of traversable wormhole solutions with novel shapefunctions in the framework of F (R ,Lm) gravity 论 F (R ,Lm) 引力框架下具有新形状函数的可穿越虫洞解的存在性和稳定性

Communications in Theoretical Physics Pub Date : 2024-03-19 DOI: 10.1088/1572-9494/ad3544

Sourav Chaudhary, Jitendra Kumar, S. Maurya, Sweeti Kiroriwal, Abdul Aziz

引用次数: 0

Higher dimensional integrable deformations of the classical Boussinesq-Burgers system 经典 Boussinesq-Burgers 系统的高维可积分变形

Communications in Theoretical Physics Pub Date : 2024-03-19 DOI: 10.1088/1572-9494/ad3546

Xiaoyu Cheng, Qing Huang

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Diffusion of nanochannel-confined knot along a tensioned polymer 纳米通道约束结沿拉伸聚合物扩散

Communications in Theoretical Physics Pub Date : 2024-03-18 DOI: 10.1088/1572-9494/ad34c3

Guobing Cai, Yong Li, Yuyu Feng, Zhouhui Deng, Yanhui Liu

{"title":"Diffusion of nanochannel-confined knot along a tensioned polymer","authors":"Guobing Cai, Yong Li, Yuyu Feng, Zhouhui Deng, Yanhui Liu","doi":"10.1088/1572-9494/ad34c3","DOIUrl":"https://doi.org/10.1088/1572-9494/ad34c3","url":null,"abstract":"\u0000 The knots frequently occur in biopolymer and their diffusion plays an active role in the gene regulation. To deeply understand this effect, in this work, Langevin dynamics simulations were carried out to detect the diffusion behaviors of a knot along a tensioned polymer in different spatial constraints. The polymer accommodating a knot was tethered to two macrospheres to block the unravelling of the knot. As a result, the curves for the diffusion coefficients of the knot with different bending stiffness as a function of the tension in different spatial constraints were obtained. In the space without constraints or with weak constraints, the corresponding curves for the knot with relatively large bending stiffness exhibited two turnover behaviours. On the contrary, for the knot with relatively small bending stiffness, the diffusion coefficients were monotonically reduced with increasing tension. However, in a space with strong constraints, all the curves showed one turnover behaviour regardless of the bending stiffness. The turnover behaviours divided the curves into different regimes, and the dominant diffusion mechanisms in the regimes, namely, knot-region breathing, self-reptation, and internal friction, were clearly identified. The effective friction coefficients ξ of the knots with 31, 41, 51 and 52 types as a function of the knot size N at a fixed tension were well fitted by the relationξ∝N. The effective friction coefficients of the knots at relatively large tension f>3 sharply increased with the knot complexity, which is not dependent on the spatial constraints. By contrast, the values of these coefficients at relatively small tension f≤3 were remarkably dependent on the spatial constraints. Our work provides not only valuable simulation results to assist the understanding of the diffusion of DNA knot, but also highlights the single-molecule design for the manipulation of DNA knots in future.","PeriodicalId":508917,"journal":{"name":"Communications in Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140231957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the impact of the universal function of nuclear proximity potential in the heavy-ion fusion cross sections 研究重离子聚变截面中核临近势普遍函数的影响

Communications in Theoretical Physics Pub Date : 2024-03-15 DOI: 10.1088/1572-9494/ad3437

R. Gharaei, E. Sarvari

{"title":"Investigating the impact of the universal function of nuclear proximity potential in the heavy-ion fusion cross sections","authors":"R. Gharaei, E. Sarvari","doi":"10.1088/1572-9494/ad3437","DOIUrl":"https://doi.org/10.1088/1572-9494/ad3437","url":null,"abstract":"\u0000 The fusion barriers and cross sections of 15 colliding systems with $320leq Z_1Z_2 leq 1512$ are investigated in detail to understand the influence of the universal function of proximity potential formalism in the heavy-ion fusion mechanism. To realize this goal, we select three versions of the phenomenological proximity potentials, including Prox. 77, Zhang 2013, and Guo 2013, to calculate the nucleus-nucleus potential. The experimental fusion cross sections for the selected reactions are analyzed via the standard coupled-channels (CC) calculations, including couplings to the low-lying $2^+$ and $3^-$ states in target and projectile. The calculated results show the universal functions of the Guo 2013 and Prox. 77 models provide the lowest and highest fusion barriers, respectively. In addition, it is found that the height of fusion barriers is enhanced by increasing the mass number of the projectile from light to heavy ones. The highest sensitivity to the mass number of the projectile belongs to the results of Prox. 77. A discussion is also presented about the influence of universal function on the radial behavior of the interaction potential in the allowed region for overlapping configurations. Our results reveal that the best fit to the experimental data of the fusion cross sections for the reactions involving light and medium nuclei is obtained using the universal function of the Zhang 2013 model. For the heavier systems, the results of the Guo 2013 model at sub-barrier energies provide a good description of the available data.","PeriodicalId":508917,"journal":{"name":"Communications in Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of $2times2$ matrix non-Hermitian quantum systems on Bloch sphere 布洛赫球上2美元/次2美元矩阵非赫米提量子系统的动力学

Communications in Theoretical Physics Pub Date : 2024-03-11 DOI: 10.1088/1572-9494/ad3223

Li-Bin Fu

引用次数: 0

Exploring Dielectric Phenomena in Sulflower-Like Nanostructure via Monte Carlo technique 通过蒙特卡洛技术探索向日葵状纳米结构中的介电现象

Communications in Theoretical Physics Pub Date : 2024-03-11 DOI: 10.1088/1572-9494/ad3221

N. Saber, Z. Fadil, Hussein Sabah, A. Mhirech, B. Kabouchi, L. Bahmad, C. Raorane, S. S. Sana, Hassan Fouad, Mohamed Hashem

引用次数: 0

Theoretical study of the nonlinear force loading control in single molecule stretching experiments 单分子拉伸实验中的非线性力加载控制理论研究

Communications in Theoretical Physics Pub Date : 2024-03-11 DOI: 10.1088/1572-9494/ad3226

Xingyu Qi, Zilong Guo, Shimin Le, Hu Chen

{"title":"Theoretical study of the nonlinear force loading control in single molecule stretching experiments","authors":"Xingyu Qi, Zilong Guo, Shimin Le, Hu Chen","doi":"10.1088/1572-9494/ad3226","DOIUrl":"https://doi.org/10.1088/1572-9494/ad3226","url":null,"abstract":"\u0000 Force spectrum measurements with constant loading rate are widely used in single molecule manipulation experiments to study the mechanical stability and force response of biomolecules. Force-dependent transition rates can be obtained from the transition force distribution, but it is limited to the force range with non-zero force distribution. Though constant loading rate control can be realized in magnetic tweezers, but the loading rate range is limited due to the slow movement of permanent magnets. Non-linear exponential and exponential squared force loading functions are more feasible in magnetic tweezers, while there is no theoretical result available for these two kinds of non-linear force loading functions. In this study we solved the unfolding process of a protein following Bell's model under nonlinear exponential and exponential squared force loading functions, which offer a broader range of unfolding force distribution compared to the traditional constant loading rate experiments. Furthermore, we derived two force loading functions which can produce uniform unfolding force distribution. This research contributes fundamental equations for the analysis of experimental data obtained through single molecule manipulation under nonlinear force loading controls, and pave the way of using nonlinear force control in magnetic tweezers experiment.","PeriodicalId":508917,"journal":{"name":"Communications in Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Stokes-Einstein-Debye relation in ortho-terphenyl liquid 邻位三联苯液体中的斯托克斯-爱因斯坦-德贝关系

Communications in Theoretical Physics Pub Date : 2024-03-11 DOI: 10.1088/1572-9494/ad321f

Gan Ren

引用次数: 0

The multi-channel rumor propagation model considering individual game behavior and time delay 考虑个体游戏行为和时间延迟的多渠道谣言传播模型

Communications in Theoretical Physics Pub Date : 2024-03-11 DOI: 10.1088/1572-9494/ad3222

Yafang Dong, Liang’an Huo, Xiaoxiao Xie, Ming Li

{"title":"The multi-channel rumor propagation model considering individual game behavior and time delay","authors":"Yafang Dong, Liang’an Huo, Xiaoxiao Xie, Ming Li","doi":"10.1088/1572-9494/ad3222","DOIUrl":"https://doi.org/10.1088/1572-9494/ad3222","url":null,"abstract":"\u0000 The rapid development of the Internet has accelerated the spread of rumors, posing challenges to social cohesion and stability. To address this, a multi-channel rumor propagation model incorporating individual game behavior and time delay is proposed. It depicts individuals strategically choosing propagation channels in the rumor spread process, capturing real-world intricacies more faithfully. Specifically, the model allowing spreaders to choose between text and video information base channels. Strategy adoption hinges on benefits versus costs, with payoffs dictating strategy and the propagation process determining an individual's state. By theoretical analysis of the model, the propagation threshold and equilibrium points are obtained. Then the stability of the model is further demonstrated based on Routh-Hurwitz judgment and Descartes' Rule of Signs. Then numerical simulations are conducted to verify the correctness of the theoretical results and the sensitivity of the model to key parameters. The outcomes reveal that increasing the propagation cost of spreaders can significantly curb the spread of rumors. In contrast to the classical model, rumors spread faster and more widely in the improved multi-channel rumor propagation model in this paper, which is a feature more aligned with real-world scenarios. Finally, the validity and predictive ability of the model are verified by using real rumor propagation data sets, indicating that the improved multi-channel rumor propagation model has good practical application and predictive value.","PeriodicalId":508917,"journal":{"name":"Communications in Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase structures and critical behaviour of rational non-linear electrodynamics AdS black holes in Rastall gravity 拉斯塔尔引力中理性非线性电动力学 AdS 黑洞的相结构和临界行为

Communications in Theoretical Physics Pub Date : 2024-03-07 DOI: 10.1088/1572-9494/ad30f4

Y. Sekhmani, D. J. Gogoi, R. Myrzakulov, J. Rayimbaev

{"title":"Phase structures and critical behaviour of rational non-linear electrodynamics AdS black holes in Rastall gravity","authors":"Y. Sekhmani, D. J. Gogoi, R. Myrzakulov, J. Rayimbaev","doi":"10.1088/1572-9494/ad30f4","DOIUrl":"https://doi.org/10.1088/1572-9494/ad30f4","url":null,"abstract":"\u0000 This research paper presents a black hole solution with a rational non-linear electrodynamics source in the Rastall gravity framework. The paper analyzes the thermodynamic properties of the solution in normal phase space and explores its critical behavior. The phase structure is examined using the extended first law of thermodynamics, with the cosmological constant $Lambda$ serving as pressure $P$. The isotherms exhibit van der Waals behavior at small values of horizon $r_+$. The paper also investigates the Gibbs free energy behavior and finds two critical points with two pressures where the reentrant phase transition occurs and disappears. On the other hand, we explore the prevalent microstructure of black holes in Ruppeiner geometry, uncovering significant deviations in the nature of particle interactions from conventional practice. Moreover, the thermodynamic geometry is analyzed using the Ruppeiner formalism, with the normalized Ricci scalar indicating possible point-phase transitions of the heat capacity, and the normalized extrinsic curvature having the same sign as the normalized Ricci scalar. The three-phase transitions of the heat capacity are those that we find for the normalized Ruppeiner curvatures. Thus, there is an absolute correspondence.","PeriodicalId":508917,"journal":{"name":"Communications in Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0