International Journal of Theoretical Physics最新文献_第4页

Spread Complexity of High Energy Neutrino Propagation over Astrophysical Distances 高能中微子在天体物理距离上传播的复杂性

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-01-06 DOI: 10.1007/s10773-024-05873-8

Khushboo Dixit, S. Shajidul Haque, Soebur Razzaque

引用次数: 0

Non-relativistic Oscillator in a Uniform Magnetic Field in Non-commutative Anti-de Sitter Spaces 非交换反德西特空间中均匀磁场中的非相对论性振子

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-01-04 DOI: 10.1007/s10773-024-05853-y

Sek Lakhdar, Falek Mokhtar, Moumni Mustafa

引用次数: 0

Bidirectional Assisted Cloning for Arbitrary Unknown Single-Qubit States 任意未知单量子位态的双向辅助克隆

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-01-04 DOI: 10.1007/s10773-024-05876-5

Yimamujiang Aisan, Nueraminaimu Maihemuti, Jiayin Peng, Jiangang Tang

{"title":"Bidirectional Assisted Cloning for Arbitrary Unknown Single-Qubit States","authors":"Yimamujiang Aisan, Nueraminaimu Maihemuti, Jiayin Peng, Jiangang Tang","doi":"10.1007/s10773-024-05876-5","DOIUrl":"10.1007/s10773-024-05876-5","url":null,"abstract":"<div>In this article, we first present a new scheme that can simultaneously produce two perfect replicas of arbitrary unknown single-qubit states in two different directions with the aid provided by a state preparer. This scheme can be divided into two stages: bidirectional quantum teleportation (BQT) and assisted cloning (AC). The first stage of this scheme requires a BQT through a maximally entangled four-qubit cluster state as the quantum channel, where the arbitrary unknown single-qubit states of two communicators are simultaneously exchanged and in the second stage, the state preparer uses a special two-qubit projective measurement (PM) to disentangle the remaining entangled states and informs different participants of some classical information so as to generate perfect replicas or orthogonal complement replicas. The research results indicate that this scheme can generate a perfect replica or orthogonal complement replica of an arbitrary unknown single-qubit state at each of two distant locations simultaneously, with the help of the state preparer. Subsequently, by replacing the quantum channel in the above scheme with a non-maximally entangled four-qubit cluster state, the above scheme is generalized from the aspects of PM and positive operator-value measurement (POVM), respectively after introducing an appropriate number of auxiliary qubits.</div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925642","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

Switch Mechanism on a Quantum Teleportation Protocol with Dual Controllers 双控制器量子隐形传态协议的切换机制

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-01-04 DOI: 10.1007/s10773-024-05877-4

Lila Yuwana, Muhammad Taufiqi, Agus Purwanto, Bintoro Anang Subagyo, Heru Sukamto

{"title":"Switch Mechanism on a Quantum Teleportation Protocol with Dual Controllers","authors":"Lila Yuwana, Muhammad Taufiqi, Agus Purwanto, Bintoro Anang Subagyo, Heru Sukamto","doi":"10.1007/s10773-024-05877-4","DOIUrl":"10.1007/s10773-024-05877-4","url":null,"abstract":"<div>In this work, we evaluate one qubit quantum controlled teleportation with two controllers and propose a novel switch mechanism. We show that the teleportation has two scenarios: the first scenario is similar to the OR logic gate, i.e., the teleportation success with the cooperation of one of the controllers only, and it does not matter which one, while the second scenario is similar to the AND logic gate, i.e., the teleportation success if both controllers cooperate. The properties of logic gates come from the nature of the channel state’s entanglement, especially how they preserve their entanglement due to computational bases measurement. We also proposed a switch mechanism for the controllers as a way how to control the teleportation process. We show that if the controller does not allow teleportation, the sender’s qubit information already mixed on the channel vanishes. We also show that it is possible to use the proposed mechanism for other quantum controlled teleportation protocols. Furthermore, we also simulate the OR-logic-gate protocol with the proposed mechanism in Qiskit and show that it can be implemented well.</div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925641","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

Constraints on Coupled f(R) Gravitational Models by Thermodynamics 耦合f(R)引力模型的热力学约束

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2025-01-02 DOI: 10.1007/s10773-024-05875-6

Luyu Li

{"title":"Constraints on Coupled f(R) Gravitational Models by Thermodynamics","authors":"Luyu Li","doi":"10.1007/s10773-024-05875-6","DOIUrl":"10.1007/s10773-024-05875-6","url":null,"abstract":"<div>Numerous models have been proposed theoretically to explain the observed phenomena of the accelerated expansion of the current cosmology. Among these, f(R) gravity theories emerge as a competitive framework, as they not only account for the observed acceleration but also provide an explanation for the early inflation of the cosmology. To further investigate the validity of these theories, we investigate coupled f(R) gravitational models from the perspective of thermodynamics, under the assumption of non-minimal coupling between matter and geometry. This paper explores the thermodynamic properties of three different f(R) forms of gravitational models on cosmological scales, deriving their corresponding entropy functions and applying the generalized second law of thermodynamics. Finally, by employing the generalized second law of thermodynamics and analyzing relevant astronomical observation data, the model parameters for these three f(R) gravitational models are constrained. The results of these constraints not only identify the parameter ranges that satisfy the thermodynamic requirements but also point to matter candidates that realize the accelerated expansion of the cosmology.</div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912870","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

Integrability Analysis of the Generalized (2+1)-dimensional Hirota-Satsuma-Ito Equation Based on Bell Polynomial Method 基于贝尔多项式方法的广义（2+1）维Hirota-Satsuma-Ito方程的可积性分析

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-30 DOI: 10.1007/s10773-024-05869-4

Jiangying Huo, Taogetusang Bao

引用次数: 0

Chaotic Interaction Between Dark Matter and Dark Energy 暗物质和暗能量之间的混沌相互作用

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-28 DOI: 10.1007/s10773-024-05871-w

E. Aydiner

引用次数: 0

Traversability of Schwarzschild-Anti-de Sitter Wormhole in f(T) gravity f(T)重力下Schwarzschild-Anti-de Sitter虫洞的可穿越性

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-27 DOI: 10.1007/s10773-024-05870-x

Sheng-Fu Zhang, Rui-Hui Lin

{"title":"Traversability of Schwarzschild-Anti-de Sitter Wormhole in f(T) gravity","authors":"Sheng-Fu Zhang, Rui-Hui Lin","doi":"10.1007/s10773-024-05870-x","DOIUrl":"10.1007/s10773-024-05870-x","url":null,"abstract":"<div>In this paper we analyze the traversability of static and evolving Schwarzschild-Anti-de Sitter wormholes. The wormhole metric under consideration is not asymptotically flat. Hence one can only embed this metric into the Euclidean space for a limited radius (r_{max }). For (r>r_{max }), an exterior vacuum spacetime should be matched to the wormhole spacetime. In the framework of f(T) gravities, we discuss the null energy condition that the matter supporting the wormhole should satisfy and find that the nontrivial form of f(T) is necessary. For the wormholes to be suitable for human to traverse, we consider the tidal force that a traveler would have felt during his trip. This leads to an upper bound of the traveler’s velocity. Utilizing the velocity allowed, we will estimate the travel time through the wormhole. In the evolving cases, the wormhole should not be expanding too fast, otherwise the traveler may not be able to arrive at the other side of the wormhole. Besides this, for static wormholes, we briefly discuss the geodesics in the plane (theta =pi /2).</div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889933","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

Phase Thermalization: from Fermi Liquid to Incoherent Metal 相热化：从费米液体到非相干金属

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-27 DOI: 10.1007/s10773-024-05845-y

Pinaki Banerjee, Bidisha Chakrabarty, Swapnamay Mondal

{"title":"Phase Thermalization: from Fermi Liquid to Incoherent Metal","authors":"Pinaki Banerjee, Bidisha Chakrabarty, Swapnamay Mondal","doi":"10.1007/s10773-024-05845-y","DOIUrl":"10.1007/s10773-024-05845-y","url":null,"abstract":"<div>When a system consists of a large subsystem (bath) and a small one (probe), thermalization implies induction of temperature of the bath onto the probe. If both the bath and the probe are described by same microscopic Hamiltonian, thermalisation further entails that the probe imbibes the phase of the bath. We refer to this phenomenon as phase thermalization. However, it is not clear whether this phenomenon is realizable when the probe and the bath are described by different microscopic Hamiltonians. We show phase thermalization is possible even when the microscopic Hamiltonians differ significantly. We provide an explicit example, where the probe is a Fermi liquid realised by a Majorana chain with (n gg 1) fermions per site interacting through random hopping and the bath is an incoherent metal described by another Majorana chain with (N > n) fermions per site interacting through arbitrarily long range random four-fermion interaction. In deep infrared (i.e. at very low energies), the probe turns into an incoherent metal, with Lyapunov spectrum and diffusion coefficient identical to the bath.</div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"64 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-024-05845-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889932","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: 0

Relativistic Covariance of Scattering 散射的相对论性协方差

IF 1.3 4区物理与天体物理

International Journal of Theoretical Physics Pub Date : 2024-12-24 DOI: 10.1007/s10773-024-05861-y

Norbert Dragon

{"title":"Relativistic Covariance of Scattering","authors":"Norbert Dragon","doi":"10.1007/s10773-024-05861-y","DOIUrl":"10.1007/s10773-024-05861-y","url":null,"abstract":"<div>Avoiding the assumption that relativistic scattering be describable by interacting fields we find in the Schrödinger picture relativistic scattering closely analogue to the non-relativistic case. On the space of scattering states the invariant mass operator (M') of the interacting time evolution has to be unitarily equivalent to the invariant mass (M= sqrt{P^2}) where P, acting on many-particle states, is the sum of the one-particle four-momenta. For an observer at rest (P^0) generates the free time evolution. Poincaré symmetry requires the interacting Hamiltonian (H') to Lorentz transform as 0-component of a four-vector and to commute with the four-velocity (U= P / M ) but not with P, else there is no scattering. Even though (H') does not commute with P, the scattering matrix does. The four-velocity U generates translations of states as they are seen by shifted observers. Superpositions of nearly mass degenerate particles such as a (K_{text {long}}) are seen by an inversely shifted observer as a shifted (K_{text {long}}) with an unchanged relative phase. In contrast, the four-momentum P generates oscillated superpositions e.g. a shifted (K_{text {short}}) with a changed relative phase. The probability of scattering of massive particles is shown to be approximately proportional to the spacetime overlap of their position wave functions. This is basic to macroscopic locality and justifies to represent the machinery of actual scattering experiments by the vacuum. In suitable variables the relativistic Hamiltonian of many-particle states is not the sum of a Hamiltonian for the motion of the center and a commuting Hamiltonian for the relative motion but factorizes as their product. They act on different variables of the wave functions.</div>","PeriodicalId":597,"journal":{"name":"International Journal of Theoretical Physics","volume":"63 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10773-024-05861-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875273","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: 0