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Issue Information: Ann. Phys. 8/2025 发布信息：Ann。理论物理的8/2025
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-08-11 DOI: 10.1002/andp.70026
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引用次数: 0
Gödel's Universe and the Local Limit of Nonlocal Gravity Gödel的宇宙和非局部引力的局部极限
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-08-05 DOI: 10.1002/andp.202500254
Zahra Mardaninezhad, Bahram Mashhoon
{"title":"Gödel's Universe and the Local Limit of Nonlocal Gravity","authors":"Zahra Mardaninezhad,&nbsp;Bahram Mashhoon","doi":"10.1002/andp.202500254","DOIUrl":"https://doi.org/10.1002/andp.202500254","url":null,"abstract":"<p>The Gödel universe is considered within the context of the local limit of nonlocal gravity. This theory differs from Einstein's general relativity (GR) through the existence of a scalar susceptibility function <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>S</mi>\u0000 <mo>(</mo>\u0000 <mi>x</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$S(x)$</annotation>\u0000 </semantics></math> that is a characteristic feature of the gravitational field and vanishes in the GR limit. It is shown that Gödel's spacetime is a solution of the modified gravitational field equations provided <span></span><math>\u0000 <semantics>\u0000 <mi>S</mi>\u0000 <annotation>$S$</annotation>\u0000 </semantics></math> is a constant, in conformity with the spatial homogeneity of the Gödel universe. </p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271648","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
Estimating the Schmidt Numbers of Quantum States via Symmetric Measurements 利用对称测量估计量子态的施密特数
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-08-04 DOI: 10.1002/andp.202500259
Hao-Fan Wang, Shao-Ming Fei
{"title":"Estimating the Schmidt Numbers of Quantum States via Symmetric Measurements","authors":"Hao-Fan Wang,&nbsp;Shao-Ming Fei","doi":"10.1002/andp.202500259","DOIUrl":"https://doi.org/10.1002/andp.202500259","url":null,"abstract":"<p>The Schmidt numbers quantify the entanglement degree of quantum states. Quantum states with high Schmidt numbers provide a larger advantage in various quantum information processing tasks compared to quantum states with low Schmidt numbers. A Schmidt number criterion is derived based on the trace norm of the correlation matrix obtained from symmetric measurements. It is showed that the result is more effective than and superior to existing Schmidt number criteria by detailed examples.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271664","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
Vacancy-Filling Heusler Thermoelectric Compounds 填补空缺的赫斯勒热电化合物
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-26 DOI: 10.1002/andp.202500300
Xinyue Zhang, Zirui Dong, Jiye Zhang, Jun Luo
{"title":"Vacancy-Filling Heusler Thermoelectric Compounds","authors":"Xinyue Zhang,&nbsp;Zirui Dong,&nbsp;Jiye Zhang,&nbsp;Jun Luo","doi":"10.1002/andp.202500300","DOIUrl":"https://doi.org/10.1002/andp.202500300","url":null,"abstract":"<p>Heusler compounds, particularly half-Heuslers, have been emerging as promising thermoelectric materials due to their high performance and mechanical robustness. This perspective summarizes the vacancy-filling strategy as a novel approach to enhance thermoelectric performance in thermoelectric Heusler compounds. By partially occupying the 4d Wyckoff sites, this strategy modifies crystal symmetry, tailors band structures, and introduces mass/strain fluctuations, significantly reducing lattice thermal conductivity. The perspective highlights how vacancy-filling bridges half-Heusler and full-Heusler phases, enabling high thermoelectric performance while uncovering exotic physical phenomena.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 9","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012062","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
Analytical Solutions of the Driven Time-Dependent Jaynes–Cummings Model 驱动时变Jaynes-Cummings模型的解析解
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-24 DOI: 10.1002/andp.202500148
Antonio Vidiella-Barranco, Antonio Sérgio Magalhães de Castro, Alessandro Sergi, José Antonio Roversi, Antonino Messina, Agostino Migliore
{"title":"Analytical Solutions of the Driven Time-Dependent Jaynes–Cummings Model","authors":"Antonio Vidiella-Barranco,&nbsp;Antonio Sérgio Magalhães de Castro,&nbsp;Alessandro Sergi,&nbsp;José Antonio Roversi,&nbsp;Antonino Messina,&nbsp;Agostino Migliore","doi":"10.1002/andp.202500148","DOIUrl":"https://doi.org/10.1002/andp.202500148","url":null,"abstract":"<p>This study explores the dynamics of a Driven Time-Dependent Jaynes–Cummings (DTDJC) model, in which the atom and the field are influenced by an external classical field with time-varying amplitude modulation. By applying a series of unitary transformations and establishing suitable conditions for the time-dependent parameters of the system, the Hamiltonian operator is transformed into one representing a system not driven by an external field, namely a Free TDJC (FTDJC) system. This mapping allows us to determine, in both the time-independent and time-dependent cases, forms of the pumping modulating the field and the atomic population that are amenable to exact analytical solution. The effects of an off-resonance parameter emerging from the analytical solution of the model and the intensity of the classical pumping field on the dynamics of the atomic population are investigated. The exact solution allows us to reveal a rich dynamics of the system (including long-time super-revivals) that could be of use in future quantum technologies.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500148","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145273065","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
Thermal Local Quantum Information Beyond Entanglement in Two-Qubit NV Centers with External Control Parameters 具有外部控制参数的双量子位NV中心中超越纠缠的热局部量子信息
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-18 DOI: 10.1002/andp.202500111
A.-B. A. Mohamed, H. Allhibi, F. Aljuaydi, Atta ur Rahman
{"title":"Thermal Local Quantum Information Beyond Entanglement in Two-Qubit NV Centers with External Control Parameters","authors":"A.-B. A. Mohamed,&nbsp;H. Allhibi,&nbsp;F. Aljuaydi,&nbsp;Atta ur Rahman","doi":"10.1002/andp.202500111","DOIUrl":"https://doi.org/10.1002/andp.202500111","url":null,"abstract":"<p>The thermal behavior of quantum correlations is explored in a two-qubit system based on nitrogen-vacancy (NV) centers, using Local Quantum Fisher Information (LQFI), Local Quantum Uncertainty (LQU), and concurrence as quantifiers. These results show that entanglement, measured byconcurrence (CE), decays rapidly with increasing temperature, whereas coherence-based measures such as LQFI and LQU display greater resilience. The strength of zero-field splitting plays a key role in shaping quantum correlations, significantly suppressing entanglement at higher values while helping to preserve coherence. External magnetic and electric fields further influence these dynamics–magnetic fields tend to suppress entanglement, while electric fields accelerate its degradation. Dipole–dipole interactions enhance the initial quantum correlations but have a limited effect on their thermal decay. Overall, these findings underscore the robustness of coherence-based quantum resources and suggest that, while dipole–dipole coupling is more effective at regulating quantum correlations, optimal tuning of system parameters can significantly improve both the generation and preservation of these correlations at finite temperatures.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145273046","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 the Potential of Cosine Modulations and Parabolic Potentials for Beam Shape-Trajectory Control in the Fractional Schrödinger System 探索余弦调制和抛物势在分数阶Schrödinger系统光束形状-轨迹控制中的潜力
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-15 DOI: 10.1002/andp.202500117
Yong Liang, Min Zou, Mingwei Liu, Chao Tan
{"title":"Exploring the Potential of Cosine Modulations and Parabolic Potentials for Beam Shape-Trajectory Control in the Fractional Schrödinger System","authors":"Yong Liang,&nbsp;Min Zou,&nbsp;Mingwei Liu,&nbsp;Chao Tan","doi":"10.1002/andp.202500117","DOIUrl":"https://doi.org/10.1002/andp.202500117","url":null,"abstract":"<p>This study explores the transmission properties of off-axis chirped Hermite Gaussian cross-phase (HGCP) beams in fractional systems under cosine modulations and parabolic potentials. Cosine modulation induces periodic transitions in the light field, influenced by modulation frequency, Lévy index, cross-phase (CP) coefficient, and Hermite Gaussian (HG) order, creating diverse patterns like rugby balls, water waves, and elliptical rings. The cross-phase effect causes beam rotation, and diffraction enhances with increasing CP coefficient and Lévy index. Beam trajectories exhibit periodic oscillations, with amplitude growing with the Lévy index and chirp coefficients. Under parabolic potentials, the beam demonstrates autofocusing, defocusing, and periodic mode transitions, including HG to Laguerre-Gaussian (LG) conversions. The beam propagation exhibits “spiral” and “straight line” oscillatory trajectories moving toward the origin, and periodic elliptical spiral trajectories depend on the Lévy index, off-axis, and chirp parameters. These findings offer insights into beam dynamics in fractional Schrödinger equation (FSE) systems, with implications for optical communications and particle manipulation.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145273042","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
Issue Information: Ann. Phys. 7/2025 发布信息：Ann。理论物理的7/2025
IF 2.2 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-14 DOI: 10.1002/andp.70008
{"title":"Issue Information: Ann. Phys. 7/2025","authors":"","doi":"10.1002/andp.70008","DOIUrl":"https://doi.org/10.1002/andp.70008","url":null,"abstract":"","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 7","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144615172","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
(Ann. Phys. 7/2025) (安。phy。7/2025)
IF 2.2 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-14 DOI: 10.1002/andp.70009
{"title":"(Ann. Phys. 7/2025)","authors":"","doi":"10.1002/andp.70009","DOIUrl":"https://doi.org/10.1002/andp.70009","url":null,"abstract":"","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 7","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144615171","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
Nonreciprocal Enhancement of Optomechanical Entanglement Based on Sagnac Effect and Pump Modulation 基于Sagnac效应和泵浦调制的光机械纠缠非互反增强
IF 2.5 4区 物理与天体物理
Annalen der Physik Pub Date : 2025-07-12 DOI: 10.1002/andp.202500167
Chen-Qi Zhou, A-Peng Liu, Qi Guo
{"title":"Nonreciprocal Enhancement of Optomechanical Entanglement Based on Sagnac Effect and Pump Modulation","authors":"Chen-Qi Zhou,&nbsp;A-Peng Liu,&nbsp;Qi Guo","doi":"10.1002/andp.202500167","DOIUrl":"https://doi.org/10.1002/andp.202500167","url":null,"abstract":"<p>A scheme is proposed to enhance the optomechanical entanglement nonreciprocally in a spinning cavity optomechanical system driven by a periodically modulated pump field. Based on the Sagnac effect induced by the resonator's spinning, the direction-dependent frequency shifts are introduced to the counterpropagating optical modes. By combining the Sagnac effect with periodic pump modulation, the optomechanical entanglement can be enhanced nonreciprocally by a factor of about 1.67. It is shown that the negative effect of the backscattering losses on nonreciprocal entanglement enhancement can be eliminated by spinning the resonator. Meanwhile, the enhanced entanglement exhibits strong robustness against thermal noise, surviving even at environmental temperature up to 0.99 K. This work is expected to promote the development of nonreciprocal quantum networks and quantum control techniques.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 10","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145272787","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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