International Journal of Theoretical Physics最新文献_第3页

Bifurcation Analysis, Sensitivity Analysis, and Jacobi Elliptic Function Structures to a Generalized Nonlinear Schrödinger Equation

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-09 DOI: 10.1007/s10773-024-05829-y

K. Hosseini, E. Hinçal, F. Alizadeh, D. Baleanu, M. S. Osman

引用次数: 0

Electro Viscous and Cattaneo-Christov Heat Flux Impact on Hybrid Nanofluid Flow Over a Rotating Disk

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-07 DOI: 10.1007/s10773-024-05827-0

Zahir Shah, M. Sulaiman, Waris Khan, Mansoor H. Alshehri, Narcisa Vrinceanu

{"title":"Electro Viscous and Cattaneo-Christov Heat Flux Impact on Hybrid Nanofluid Flow Over a Rotating Disk","authors":"Zahir Shah, M. Sulaiman, Waris Khan, Mansoor H. Alshehri, Narcisa Vrinceanu","doi":"10.1007/s10773-024-05827-0","DOIUrl":"10.1007/s10773-024-05827-0","url":null,"abstract":"<div><p>This study investigates the dynamic properties of a Casson hybrid nanofluid flow over a rotating disk, emphasizing the influences of Electroviscous forces and Cattaneo-Christov heat flux. The nanofluid comprises Silver (Ag) nanoparticles and Multi-Walled Carbon Nanotubes (MWCNTs) dispersed in a water base fluid, chosen for their superior thermal properties and stability. A comprehensive mathematical model, comprised of Partial Differential Equations (PDEs) transformed into Ordinary Differential Equations (ODEs) through a similarity transformation method, is developed to explore this complex phenomenon. The analysis combines multiple variables including magnetic fields, viscous dissipation, Joule heating, and radiative as well as convective effects. The findings reveal significant impacts on skin friction, fluid flow characteristics, and heat transfer behavior due to the synergistic effects of the considered parameters. The study’s novelty lies in its detailed examination of Electroviscous effects within a rotating disk setup, extending beyond traditional analyses by integrating the specific thermal and viscous properties of Silver and MWCNT nanoparticles. This approach offers new insights into optimizing heat transfer applications in industrial processes, particularly in high-speed rotational systems.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Linearization of Newton’s Second Law

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-05 DOI: 10.1007/s10773-024-05772-y

Andronikos Paliathanasis

引用次数: 0

Decoherence Dynamics in a Polaron System with Collective Dephasing

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-05 DOI: 10.1007/s10773-024-05843-0

Saima Bashir, Muzaffar Qadir Lone, Prince A Ganai

引用次数: 0

Hybrid Field Perspectives on Coherence and Entanglement in Qubit-Qutrit Dynamics

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-05 DOI: 10.1007/s10773-024-05844-z

Said Alam Khan, Suliman Khan, Muhammad Javed, Zahid Ali

{"title":"Hybrid Field Perspectives on Coherence and Entanglement in Qubit-Qutrit Dynamics","authors":"Said Alam Khan, Suliman Khan, Muhammad Javed, Zahid Ali","doi":"10.1007/s10773-024-05844-z","DOIUrl":"10.1007/s10773-024-05844-z","url":null,"abstract":"<div><p>In modern quantum information, the associated protocols highly rely upon qubit-qutrit systems which offer enhanced robustness to decoherence and greater encoding capabilities, essential for fault-tolerant quantum computing and cryptography. This study investigates the dynamic behavior of quantum coherence and entanglement in a qubit-qutrit system subjected to diverse interactions and exposed to external magnetic and classical fields influenced by Ornstein-Uhlenbeck (OU)-Static mixed noise. Various system parameters are explored to discern their impact on quantum correlations over time. The dynamics characterized by spin-coupling reveal an initial entangled state, with coherence and negativity exhibiting finite values. However, the entanglement diminishes over time, accompanied by damped oscillations, indicative of coherent dynamics. Contrastingly, the magnetic field demonstrates a diminishing trajectory in coherence and negativity with increasing values, leading to complete vanishing at critical thresholds. Temperature variations display a declining trend in coherence and negativity as temperature rises, highlighting its role as a dampening factor disrupting quantum correlations. The variations in state noise disorder parameters reveal enhanced preservation and reduced oscillations as the noise disorder parameter decreases, emphasizing its crucial role in shaping quantum correlations. In addition, we observe the dynamics to be more fluctuating with increasing field coupling strength. Our findings show that the hybrid setup presented here gives completely varying traits compared to the individual configuration of qubit-qutrit systems, static noise, and OU noise studied previously. The proposed framework can serve as a prototype for studying quantum systems beyond two-level qubits, providing a more comprehensive understanding of multi-level quantum states under realistic noise.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Exploring Dynamic Dark Energy Models in f(T) Gravity: A Comparative Study of NHDE, THDE, and BHDE

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-02 DOI: 10.1007/s10773-024-05833-2

S. H. Shekh, Anirudh Pradhan, S. P. Gaikwad, K. R. Mule

{"title":"Exploring Dynamic Dark Energy Models in f(T) Gravity: A Comparative Study of NHDE, THDE, and BHDE","authors":"S. H. Shekh, Anirudh Pradhan, S. P. Gaikwad, K. R. Mule","doi":"10.1007/s10773-024-05833-2","DOIUrl":"10.1007/s10773-024-05833-2","url":null,"abstract":"<div><p>In this work, we explore the cosmological implications of three dynamic dark energy models-New Holographic Dark Energy (NHDE), Tsallis Holographic Dark Energy (THDE), and Barrow Holographic Dark Energy (BHDE)-within the framework of <i>f</i>(<i>T</i>) gravity. These models are motivated by the holographic principle and provide alternatives to the standard <span>(Lambda )</span>CDM model. We adopt a flat, isotropic Friedmann-Robertson-Walker (FRW) universe and employ a specific forms of <i>f</i>(<i>T</i>) gravity. The evolution of key cosmological parameters, such as the isotropic pressure, equation of state (EoS) parameter, and energy conditions, is analyzed for each model. Using observational data from Type Ia supernovae (SNIa), Cosmic Microwave Background (CMB), Baryon Acoustic Oscillations (BAO), and Hubble parameter measurements, we constrain the free parameters of each model and evaluate their compatibility with observational data. The analysis reveals that NHDE, THDE, and BHDE models are viable alternatives to <span>(Lambda )</span>CDM, offering a more dynamic description of dark energy. Each model satisfies key energy conditions, providing a stable framework for explaining cosmic acceleration. The results show deviations from the constant behavior of <span>(Lambda )</span>CDM, indicating the potential for time-evolving dark energy in these models.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Evolution of Nonlinear Periodic Waves in the Focusing and Defocusing Cylindrical Modified Korteweg-de Vries Equations

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-11-30 DOI: 10.1007/s10773-024-05841-2

Nese Ozdemir, Ali Demirci, Semra Ahmetolan

引用次数: 0

Scalable Secure Teleportation in Quantum Communication Networks Using n-partite GHZ States 量子通信网络中使用 n 部分 GHZ 状态的可扩展安全远距传输

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-11-29 DOI: 10.1007/s10773-024-05839-w

Vedhanayagi R, Soubhik De, Satyanarayana S.V.M., Basherrudin Mahmud Ahmed A, Alok Sharan

{"title":"Scalable Secure Teleportation in Quantum Communication Networks Using n-partite GHZ States","authors":"Vedhanayagi R, Soubhik De, Satyanarayana S.V.M., Basherrudin Mahmud Ahmed A, Alok Sharan","doi":"10.1007/s10773-024-05839-w","DOIUrl":"10.1007/s10773-024-05839-w","url":null,"abstract":"<div><p>We present a protocol for faithful teleportation of an arbitrary single qubit state in a quantum network with n-parties utilizing the maximally entangled n-partite GHZ state. In our approach, starting with three parties, Alice, the sender must perform a Bell state measurement on her qubits, then the intermediate parties perform Hadamard operation along with single qubit state measurements. Finally the receiver reconstructs the teleported state by doing appropriate unitary operations. We systematically increase the number of parties involved in the process and show that the teleportation can be achieved successfully with each additional participant. By generalizing the results to n-qubit GHZ state, one can achieve serial teleportation involving the sender Alice, the receiver and <span>(varvec{(n-2)})</span> intermediate parties. We have further employed decoy qubits into our scheme to enhance the security against any potential external threats. In addition, the intrinsic efficiency of teleportation is also calculated and compared with other standard protocols.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Geodesic Structure of a Noncommutative Black Hole 非交换黑洞的测地结构

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-11-28 DOI: 10.1007/s10773-024-05824-3

Zihan Xi, Chen Wu, Wenjun Guo

引用次数: 0

Tachyonic Field Coupled with Global Monopole 与全球单极子耦合的超音速场

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-11-26 DOI: 10.1007/s10773-024-05836-z

B Samanta, B. Raychaudhuri, F. Rahaman, Aditya S. Mondal, Subrato Sarkar

{"title":"Tachyonic Field Coupled with Global Monopole","authors":"B Samanta, B. Raychaudhuri, F. Rahaman, Aditya S. Mondal, Subrato Sarkar","doi":"10.1007/s10773-024-05836-z","DOIUrl":"10.1007/s10773-024-05836-z","url":null,"abstract":"<div><p>As the early universe expanded, phase transitions occurred which resulted in the formation of different types of topological defects. Specifically, the self-coupling scalar field triplet <span>(phi ^{a})</span> was responsible for the creation of global monopoles, which are massive objects that arise during these phase transitions. The initial global symmetry of <i>O</i>(3) undergoes a process of spontaneous breaking, resulting in U(1) symmetry. In this paper we describe a model of global monopole consisting of the Higgs triplet of scalar fields with Tachyonic fluid described by the relativistic Lagrangian <span>(mathscr {L}_{Tach}=-V(phi ^{a})sqrt{1+g^{mu nu }partial _{mu }phi ^{a}partial _{nu }phi ^{a}})</span>. In the weak field approximation, we were able to discover the solution for the scalar field and space-time produced by the global monopole and the Einstein equation that emerges from these scenario exhibits a high degree of non-linearity. Our investigation focused on determining whether the global monopole produces gravitational pull on a test particle that is in motion within its spacetime. Finally, we have calculated the bending of light due to gravitational field of this global monopole.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 11","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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