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Static spherically symmetric black holes of Brans–Dicke theory of gravity 静态球对称黑洞的布兰斯-迪克引力理论
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-31 DOI: 10.1142/s0217732323501389
David Senjaya
{"title":"Static spherically symmetric black holes of Brans–Dicke theory of gravity","authors":"David Senjaya","doi":"10.1142/s0217732323501389","DOIUrl":"https://doi.org/10.1142/s0217732323501389","url":null,"abstract":"This paper investigates the static spherically symmetric vacuum solutions of Brans–Dicke Theory of Gravity. In this paper, we systematically derive the static spherically symmetric solutions by starting with the general static spherically symmetric anzats, discovering the nonzero Christoffel symbols, nonzero Ricci tensor components and the Ricci Scalar. These results allow us to rewrite the four Brans–Dicke gravitational field equations explicitly in terms of the metric components, the scalar field and its scalar potential. This paper systematically explains and shows how to modify these linear second-order ordinary differential equations in order to be able to find the solution of the scalar field, the metric components and the scalar potential analytically. We successfully find the most general solution of the static spherically symmetric vacuum solutions of Brans–Dicke gravity and the well-known Schwarzschild solution is recovered as the simplest solution.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"71 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135870575","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
New multiparty measurement-device-independent quantum secret sharing protocol based on entanglement swapping 基于纠缠交换的与多方测量设备无关的新量子秘密共享协议
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-30 DOI: 10.1142/s0217732323501456
Yu-Guang Yang, Rui-Chen Huang, Guang-Bao Xu, Yi-Hua Zhou, Wei-Min Shi, Dan Li
{"title":"New multiparty measurement-device-independent quantum secret sharing protocol based on entanglement swapping","authors":"Yu-Guang Yang, Rui-Chen Huang, Guang-Bao Xu, Yi-Hua Zhou, Wei-Min Shi, Dan Li","doi":"10.1142/s0217732323501456","DOIUrl":"https://doi.org/10.1142/s0217732323501456","url":null,"abstract":"A new multiparty measurement-device-independent quantum secret sharing (MDI-QSS) protocol is proposed based on entanglement swapping. All the measurement tasks are delegated to an untrusted party, eliminating all detector-side-channel loopholes. Only Einstein–Podolsky–Rosen (EPR) pairs, single photons and Bell-state measurements are required irrespective of the number of participants. Compared with existing MDI-QSS protocols, no additional unitary operations or Greenberger–Horne–Zeilinger (GHZ)-state measurements are needed. Our protocol is feasible experimentally and holds inspiring potential for the application in practical multiparty quantum communication networks.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"2018 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136068770","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
Chaotic string dynamics in bosonic η-deformed AdS5×T1,1 background 玻色子η-变形的混沌弦动力学AdS5×T1,1背景
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-30 DOI: 10.1142/s0217732323501420
Jitendra Pal
{"title":"Chaotic string dynamics in bosonic η-deformed AdS5×T1,1 background","authors":"Jitendra Pal","doi":"10.1142/s0217732323501420","DOIUrl":"https://doi.org/10.1142/s0217732323501420","url":null,"abstract":"In this paper, we investigate a new class of [Formula: see text]-deformed [Formula: see text] backgrounds produced by classical [Formula: see text]-matrices that satisfy the modified classical Yang–Baxter equation [JHEP 03, 094 (2022)]. We consider the string sigma model on [Formula: see text]-deformed [Formula: see text] background. We numerically examined the classical phase space dynamics of these (semi)classical strings over this deformed background and computed several chaos indicators. These involve figuring out the Poincaré section and computing the Lyapunov exponents. In the (semi)classical limit, we discover evidence that supports a non-integrable phase space dynamics.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"32 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136069496","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
Thermal states of two identical two-level atoms interacting with the single-mode fields of the Arik–Coon and Biedenharn–Macfarlane q-oscillators 两个相同的二能级原子的热态与Arik-Coon和Biedenharn-Macfarlane q-振荡器的单模场相互作用
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-30 DOI: 10.1142/s0217732323501444
H. Fakhri, S. Mirzaei, M. Sayyah-Fard
{"title":"Thermal states of two identical two-level atoms interacting with the single-mode fields of the Arik–Coon and Biedenharn–Macfarlane q-oscillators","authors":"H. Fakhri, S. Mirzaei, M. Sayyah-Fard","doi":"10.1142/s0217732323501444","DOIUrl":"https://doi.org/10.1142/s0217732323501444","url":null,"abstract":"We consider the Jaynes–Cummings models (JCMs) of two identical two-level atoms interacting with a single mode of the Arik–Coon and Biedenharn–Macfarlane [Formula: see text]-boson fields in a cavity. It is shown that there is a constant of motion, so-called the total number of excitation, which leads to decomposition of the total Hilbert space of [Formula: see text]-deformed system into three invariant subspaces. So, we have the block diagonal structure with three blocks as the Hamiltonian matrices. The exact energy spectrum and eigenstates of the [Formula: see text]-deformed models are obtained by diagonalizing each block. Assuming that the cavity fields and atoms are in thermal equilibrium, the partition function and thermal density matrix of the models are calculated. Finally, the influence of deformation parameters of the Arik–Coon and Biedenharn–Macfarlane [Formula: see text]-oscillator light fields at low-temperatures on the entropy and internal energy of the Jaynes–Cummings models as well as on the atom–atom entanglement via the concurrence measure is analyzed.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"48 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136069625","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
Energy–momentum localization in rainbow gravity 彩虹引力中的能量动量局域化
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-26 DOI: 10.1142/s0217732323501432
Murat Korunur, Sibel Korunur
{"title":"Energy–momentum localization in rainbow gravity","authors":"Murat Korunur, Sibel Korunur","doi":"10.1142/s0217732323501432","DOIUrl":"https://doi.org/10.1142/s0217732323501432","url":null,"abstract":"Theoretical physicists generally prefer to modify the general theory of relativity rather than avoiding the successful approaches that have been offered to us. Hence, the rainbow formalism of gravity, which is one of the most studied quantum gravity candidates in literature, has recently gained importance in the field. In this study, the energy–momentum localization problem is discussed for the Taub universe within the framework of rainbow gravity. To achieve this goal, energy and momentum components are calculated by making use of diverse values of rainbow functions in the Einstein, Bergmann–Thomson, Landau–Lifshitz, and the Papapetrou prescriptions for the geometry under consideration. Except for the Landau–Lifshitz prescription, all prescriptions depend on the rainbow functions and the momentum components vanish. Graphical analysis is performed for all the energies obtained. Also, it is shown in limiting condition [Formula: see text] that the results are compatible with the ones obtained in the general relativity.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134905975","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
Raychaudhuri equation and bouncing cosmology Raychaudhuri方程和弹跳宇宙学
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-26 DOI: 10.1142/s0217732323501298
Madhukrishna Chakraborty, Subenoy Chakraborty
{"title":"Raychaudhuri equation and bouncing cosmology","authors":"Madhukrishna Chakraborty, Subenoy Chakraborty","doi":"10.1142/s0217732323501298","DOIUrl":"https://doi.org/10.1142/s0217732323501298","url":null,"abstract":"This work deals with an exhaustive study of bouncing cosmology in the background of homogeneous and isotropic Friedmann–Lemaître–Robertson–Walker spacetime. The geometry of the bouncing point has been studied extensively and used as a tool to classify the models from the point of view of cosmology. Raychaudhuri equation (RE) has been furnished in these models to classify the bouncing point as regular point or singular point. Behavior of time-like geodesic congruence in the neighborhood of the bouncing point has been discussed using the Focusing Theorem which follows as a consequence of the RE. An analogy of the RE with the evolution equation for a linear harmonic oscillator has been made and an oscillatory bouncing model has been discussed in this context.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"30 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134907663","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
Custodial and SUSY 2HDM breaking under interfering condensates’ Goldstone bosons 干涉凝聚体Goldstone玻色子下的监护破缺和SUSY 2HDM破缺
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-21 DOI: 10.1142/s0217732323501341
Hani W. Maalouf
{"title":"Custodial and SUSY 2HDM breaking under interfering condensates’ Goldstone bosons","authors":"Hani W. Maalouf","doi":"10.1142/s0217732323501341","DOIUrl":"https://doi.org/10.1142/s0217732323501341","url":null,"abstract":"The Higgs condensates are proven along with the minimal versions of the hyper-symmetric 2HDM extensions when containing Supersymmetry that can play the role of oscillators for the CPC and CPV interferences, up to via [Formula: see text]. With the uncharged Higgs inclusion (considering the uncharged Goldstone Bosons compared to the spontaneously broken SM-like Higgs), the symmetric [Formula: see text] and anti-symmetric [Formula: see text] linear combinations of an ‘[Formula: see text]’ and a rescaled [Formula: see text], where masses of [Formula: see text][Formula: see text]GeV and [Formula: see text][Formula: see text]GeV, such as under the condensate’s boundary impacts. The range of the [Formula: see text]s would be up to where the composed singlet and triplet can interchange, then, they approach the Custodial SUSY at a Triple point transition with a Goldstone-type order mass [Formula: see text][Formula: see text]GeV, as well into their Dark Matter sectors’ cut-off [Formula: see text], (including [Formula: see text]) up to order 1.7[Formula: see text]TeV. That will lead to opening the way to measure the existence of Supersymmetry, indirectly at the least, through any dominance of [Formula: see text]-violating Higgs decays.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"98 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135512551","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
Hydrodynamical formulation of Wigner–Dunkl quantum mechanics Wigner-Dunkl量子力学的流体力学公式
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-21 DOI: 10.1142/s0217732323501407
M. F. Rosyid
{"title":"Hydrodynamical formulation of Wigner–Dunkl quantum mechanics","authors":"M. F. Rosyid","doi":"10.1142/s0217732323501407","DOIUrl":"https://doi.org/10.1142/s0217732323501407","url":null,"abstract":"The hydrodynamical form of Wigner–Dunkl quantum mechanics has been formulated. The main step to get such formulation was to derive a pair of Madelung-like equations (called Madelung–Wigner–Dunkl equations) from the Schrödinger equation appearing in Wigner–Dunkl quantum mechanics. Some aspects of both equations contained in the pair, i.e. the inhomogeneous continuity equation and the quantum Hamilton–Jacobi equation, have been investigated and discussed. With certain assumption, the relation between the expectation value of the quantum potential appearing in the quantum Hamilton–Jacobi equation and the so-called Fisher information has been derived. Then an uncertainty relation between momentum and position which may be tighter than the standard uncertainty relation has been derived by using Cramér–Rao inequality and Fisher information.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"11 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135512552","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
Hierarchical remote preparation of an arbitrary m-qudit state with multiple agents 具有多个代理的任意m-qudit状态的分层远程准备
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-19 DOI: 10.1142/s0217732323501419
Junli Jiang, Songya Ma, Xia Yan
{"title":"Hierarchical remote preparation of an arbitrary m-qudit state with multiple agents","authors":"Junli Jiang, Songya Ma, Xia Yan","doi":"10.1142/s0217732323501419","DOIUrl":"https://doi.org/10.1142/s0217732323501419","url":null,"abstract":"Based on Jin et al.’s hierarchical remote preparation scheme of an arbitrary [Formula: see text]-qudit state with three agents, we propose one scheme for multiple agents by utilizing the symmetry of cluster states. To save entanglement resource, we then put forward the other improved scheme. There exists a hierarchy among the agents in terms of their abilities which are quantified by nonconditioned fidelity. The upper-grade agent needs the assistance of all the remaining upper-grade agents and any one of the lower-grade agents to recover the target state, while the lower-grade agent requires all the other agents’ collaboration. It is important to emphasize that the recovery operation is derived by a general expression clearly revealing the relationship with the measurement results.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135667743","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
Klein–Gordon oscillator under gravitational effects in a topologically charged Ellis–Bronnikov wormhole 拓扑带电埃利斯-布朗尼科夫虫洞中引力作用下的克莱因-戈登振子
4区 物理与天体物理
Modern Physics Letters A Pub Date : 2023-10-18 DOI: 10.1142/s021773232350133x
C. F. S. Pereira, R. L. L. Vitória, A. R. Soares, H. Belich
{"title":"Klein–Gordon oscillator under gravitational effects in a topologically charged Ellis–Bronnikov wormhole","authors":"C. F. S. Pereira, R. L. L. Vitória, A. R. Soares, H. Belich","doi":"10.1142/s021773232350133x","DOIUrl":"https://doi.org/10.1142/s021773232350133x","url":null,"abstract":"In this paper, we investigate the phenomenon of a relativistic quantum oscillator in non-massive wormhole spacetime, known in the literature as Ellis–Bronnikov-type wormhole, for a spin-zero particle subjected to the effects of a scalar field. We have obtained analytically the bound state solutions and your respective energy spectrum. The energy profile of this scalar field is modified by the wormhole throat as well as the scalar coupling constant of curvature. In the second part of the work, we investigate how the energy spectrum for a spin-zero particle is modified by an Aharonov–Bohm geometric phase effect. We also built a graphical representation to try to visualize this modification generated by the magnetic flux constant.","PeriodicalId":18752,"journal":{"name":"Modern Physics Letters A","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135883889","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
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