International Journal of Theoretical Physics最新文献_第2页

Effects of Topological Defects and AB Fields on the Thermal Properties, Persistent Currents and Energy Spectra with an Exponential-Type Pseudoharmonic Potential 拓扑缺陷和AB场对指数型赝谐波势热性能、持续电流和能谱的影响

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-29 DOI: 10.1007/s10773-023-05453-2

A. N. Ikot, U. S. Okorie, P. Sawangtong, H. Horchani

引用次数: 0

Quantum Multicast Protocol and Multi-output Remote Operation Implementation via Four-particle Cluster State 基于四粒子簇态的量子组播协议和多输出远程操作实现

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-28 DOI: 10.1007/s10773-023-05446-1

Jia-yin Peng, Fan Wu, Jian-gang Tang, Liang Tang

{"title":"Quantum Multicast Protocol and Multi-output Remote Operation Implementation via Four-particle Cluster State","authors":"Jia-yin Peng, Fan Wu, Jian-gang Tang, Liang Tang","doi":"10.1007/s10773-023-05446-1","DOIUrl":"10.1007/s10773-023-05446-1","url":null,"abstract":"<div><p>By making use of the maximally entangled cluster state of four particles as the quantum channels, this article suggests three theoretical protocols to synchronously teleport different quantum information from one sender to multiple receivers. One protocol is a tripartite quantum multicast, which enables one sender to transmit two different known states of arbitrary single-qubit to two receivers with a 100% success probability, respectively and synchronously. The rest are two tripartite multi-output remote operation implementation (ROI) protocols, including arbitrary single-particle operations and partially unknown single-particle operations. In each of these two protocols, one sender can remotely and deterministically apply two quantum operations on two unknown states in receivers’ particles, respectively and synchronously, to ensure that the quantum operations received by two recipients are different, so as to meet the requirements of multi-output communication. Comparing these two protocols of arbitrary quantum operations and partially unknown operations, the latter uses only half of the quantum resources and classical resources required by the former, at the cost that the latter’s quantum operations are partially unknown. In addition, the above three schemes can be extended to scenarios where non-maximally entangled cluster state of four particles acts as quantum channels.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"62 9","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5073858","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

Constant Roll Inflation in Viscous Mimetic Matter-Geomerty Coupling Gravity 粘性模拟物质-几何耦合重力中的恒滚胀

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-28 DOI: 10.1007/s10773-023-05401-0

E. H. Baffou, M. J. S. Houndjo, I. G. Salako, L. D. Gbètoho

引用次数: 1

Spectrality in Convex Sequential Effect Algebras 凸序列效应代数的谱性

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-25 DOI: 10.1007/s10773-023-05431-8

Anna Jenčová, Sylvia Pulmannová

引用次数: 0

Study of Performance of Quantum Stirling Engine Using 2D and 3D Heisenberg Model 基于二维和三维海森堡模型的量子斯特林发动机性能研究

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-24 DOI: 10.1007/s10773-023-05450-5

A. H. Bahamin Pili, R. Khordad, H. R. Rastegar Sedehi, A. Avazpour

{"title":"Study of Performance of Quantum Stirling Engine Using 2D and 3D Heisenberg Model","authors":"A. H. Bahamin Pili, R. Khordad, H. R. Rastegar Sedehi, A. Avazpour","doi":"10.1007/s10773-023-05450-5","DOIUrl":"10.1007/s10773-023-05450-5","url":null,"abstract":"<div><p>In the article, a quantum Stirling machine is proposed and its behavior as a quantum heat engine (QHE) or a refrigerator is investigated. The working substance of the machine is considered as a 2D and 3D spin chain model under a magnetic field and the Dzyaloshinskii-Moriya interaction (DMI). The effects of a magnetic field, the temperature of a cold bath, DMI, and the system dimension have been studied on the efficiency and performance coefficient of the Stirling heat engine and the Stirling refrigerator. It is deduced that with proper selection of the system parameters, and system dimension the Stirling cycle can be operated as a QHE or quantum refrigerator with sufficient efficiency, and performance coefficient. By decreasing the temperature of the cold bath and considering a 3D model without DMI, the system works as a QHE with a maximum efficiency of 33%. Also, by considering a 2D model with DMI and rising the magnetic field, the system works as a quantum refrigerator with a maximum performance coefficient approximately of 7.1. Therefore, we can say that the maximum efficiency or performance coefficient can be obtained by the appropriate selection of system parameters and dimensions.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"62 8","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43816187","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: 1

On the Set-Representable Orthomodular Posets that are Point-Distinguishing 关于可点判别的集合可表示正交模位

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-23 DOI: 10.1007/s10773-023-05436-3

Dominika Burešová, Pavel Pták

{"title":"On the Set-Representable Orthomodular Posets that are Point-Distinguishing","authors":"Dominika Burešová, Pavel Pták","doi":"10.1007/s10773-023-05436-3","DOIUrl":"10.1007/s10773-023-05436-3","url":null,"abstract":"<div><p>Let us denote by <span>(mathcal {S}mathcal {O}mathcal {M}mathcal {P})</span> the class of all set-representable orthomodular posets and by <span>(mathcal {P}mathcal {D} mathcal {S}mathcal {O}mathcal {M}mathcal {P})</span> those elements of <span>(mathcal {S}mathcal {O}mathcal {M}mathcal {P})</span> in which any pair of points in the underlying set <i>P</i> can be distinguished by a set (i.e., <span>((P, mathcal {L}) in mathcal {P}mathcal {D} mathcal {S}mathcal {O}mathcal {M}mathcal {P})</span> precisely when for any pair <span>(x, y in P)</span> there is a set <span>(A in mathcal {L})</span> with <span>(x in A)</span> and <span>(y notin A)</span>). In this note we first construct, for each <span>((P, mathcal {L}) in mathcal {S}mathcal {O}mathcal {M}mathcal {P})</span>, a point-distinguishing orthomodular poset that is isomorphic to <span>((P, mathcal {L}))</span>. We show that by using a generalized form of the Stone representation technique we also obtain point-distinguishing representations of <span>((P, mathcal {L}))</span>. We then prove that this technique gives us point-distinguishing representations on which all two-valued states are determined by points (all two-valued states are Dirac states). Since orthomodular posets may be regarded as abstract counterparts of event structures about quantum experiments, results of this work may have some relevance for the foundation of quantum mechanics.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"62 8","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-023-05436-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42117309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 1

Asymptotically Optimal Prepare-Measure Quantum Key Distribution Protocol 渐近最优准备测量量子密钥分发协议

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-23 DOI: 10.1007/s10773-023-05447-0

Hao Shu

{"title":"Asymptotically Optimal Prepare-Measure Quantum Key Distribution Protocol","authors":"Hao Shu","doi":"10.1007/s10773-023-05447-0","DOIUrl":"10.1007/s10773-023-05447-0","url":null,"abstract":"<div><p>Quantum key distribution (QKD) could be the most significant application of quantum information theory. In nearly four decades, although substantial QKD protocols are developed, the BB84 protocol and its variants are still the most researched ones. It is well-known that the secure bound of qubit error rate (QBER) of BB84 protocol is about 11<span>(%)</span> while it can be increased to 12.6<span>(%)</span> by six-state protocol. It would not be surprising that employing more basis could increase the bound. However, what is the optimal protocol, and how to analyze it? In this paper, investigations of asymptotically optimal QKD protocols are proposed. Precisely, We present an abstraction of prepare-measure QKD protocols and investigate two special cases which are optimal among all protocols coding by the same states. Our analysis demonstrates that the asymptotically optimal QBER bounds coding by orthogonal qubits are about 27.28<span>(%)</span> for both memory C-NOT attacks and memoryless C-NOT attacks while the bounds coding by non-orthogonal states in two mutually unbiased bases are about 22.73<span>(%)</span> for memory and 28.69<span>(%)</span> for memoryless C-NOT attacks. The protocols are idealized but might be asymptotically realized while their optimality indicates the ultimate potential of QKD protocols. Although the analysis only contains a special kind of attack, it provides a framework for investigating such protocols.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"62 8","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48198553","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: 1

Classical Limit and Ehrenfest’s Theorem Versus Non-relativistic Limit of Noncommutative Dirac Equation in the Presence of Minimal Uncertainty in Momentum 存在最小动量不确定性的非交换Dirac方程的经典极限和Ehrenfest定理与非相对论极限

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-22 DOI: 10.1007/s10773-023-05444-3

Ilyas Haouam

引用次数: 0

Renormalization Theory of Spinor Bose–Einstein-Condensed Systems 自旋玻色-爱因斯坦凝聚系统的重整化理论

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-21 DOI: 10.1007/s10773-023-05442-5

Won-Ju Choe, Sung-Gyu Pak, Jun-Gyu Pak, Jong-Yon Kim

引用次数: 0

The Half-Transform Ansatz: Quarkonium Dynamics in Quantum Phase Space Representation 半变换Ansatz:量子相空间表示中的夸克动力学

IF 1.4 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2023-08-19 DOI: 10.1007/s10773-023-05410-z

Gabriel Nowaskie

{"title":"The Half-Transform Ansatz: Quarkonium Dynamics in Quantum Phase Space Representation","authors":"Gabriel Nowaskie","doi":"10.1007/s10773-023-05410-z","DOIUrl":"10.1007/s10773-023-05410-z","url":null,"abstract":"<div><p>Since the groundwork published by Torres-Vega and Frederick, the Quantum Phase Space Representation (QPSR) has been explored as a method for solving a multitude of physical systems and describing phenomena. Most recently, Valentino A. Simpao has developed a method, the Heaviside Operational Ansatz, to solve the Time Dependent Schrodinger Equation (TDSE) in the QPSR, but there are still no general, direct methods to solve the Time Independent Schrodinger Equation in the QPSR. There is also no current formulation of quarkonium in phase space. In this paper, we describe the strong interactions of non-relativistic heavy quarks using the Cornell potential, and present a method, the Half-Transform Ansatz, to cast the Schrodinger Equation into a hyper-geometric form which can be solved for the phase space wave function and its energy eigenvalues using the Nikiforov-Uvarov method. This solution can be generalized for any two particle system with a scleronomic potential made up of polynomial and reciprocal terms. These results are compared to experimental results and other theoretical models. We also analyze the behavior of these wave functions, which suggest a correlation between radial momentum and the upper limit of existence in charm-anticharm mesons.</p></div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"62 8","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47848268","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: 1