Annalen der Physik最新文献

{"title":"Space-Time Non-Separable Dynamics of Ultrashort Vortex Pulse With Power Exponential Spectrum","authors":"Shakti Singh,&nbsp;Akhilesh Kumar Mishra","doi":"10.1002/andp.202400449","DOIUrl":"https://doi.org/10.1002/andp.202400449","url":null,"abstract":"<p>Ultrashort optical pulses with orbital angular momentum (OAM) owing to their applications in classical as well as quantum domains attract a lot of research attention. The evolution of their spatio-temporal dynamics is of particular interest. In the present work, the spatio-temporal evolution of ultrashort Laguerre Gauss (LG) vortex with power exponential spectrum, also called power exponential (PE) pulse is numerically explored, in dispersive and nonlinear media. The evolution of space-time non-separable ultrashort vortex pulse is specifically addressed. The study reveals the asymmetric spatio-temporal evolution and splitting in the spatio-temporal plane. Compression at the trailing edge of the pulse is observed with increase in the strength of the nonlinearity. The study further reveals that the temporal, spectral, and chirp evolution patterns of the pulse vary uniquely across different spatial regions and these variations depend upon the strength of nonlinearity and propagation distance. In weak nonlinear regime, a redshift in the spectrum is observed as one moves radially outward from the bright caustic of the ultrashort LG vortex, while a blueshifted spectrum emerges as one approaches the phase singularity. Interestingly, as the pulse furthers in the medium, nonlinearity induced spectral shift is witnessed and with stronger nonlinearity, a complex spectral evolution is observed.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939681","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}

{"title":"Thermal-Hydraulic Performance and Entropy Generation Analysis of a Square Molten Salt Absorber Tube with Wavy-Tape Insert at Low Reynolds Number","authors":"Yang Yang,&nbsp;Yang Zou","doi":"10.1002/andp.202400434","DOIUrl":"https://doi.org/10.1002/andp.202400434","url":null,"abstract":"<p>During periods of weak sunlight, to maintain the molten salt temperature in a square absorber tube (SAT), the flow is at low Reynolds number (<i>Re</i>), accompanied by low heat transfer (HR) performance. To enhance the HR performance of a square molten salt absorber tube (AE) at low <i>Re</i>, a wavy-tape insert (WET) is first introduced. The performance of square molten salt AE with WET is evaluated under various operational conditions and structural parameters. Results show that the WET generates a substantial swirling flow in the square molten salt AE, which promotes the fluid mixing and then enhances HR. Compared to a smooth SAT, the friction factor (<i>f</i>) for square molten salt AE with WET increases by at least 2.55 times, whereas the Nusselt number (<i>Nu</i>) increases by 1.11–5.77 times. Additionally, the entropy generation rate (EGR) and exergy loss (EL) decrease by 35.54%–82.65% and 43.43%–84.61%, respectively. Furthermore, the transport efficiency of thermal energy (TETE) and exergy efficiency (EE) increase by 6.58%–26.24% and 10.26%–46.13%, respectively. This study may have the potential to offer valuable insights for the design of square molten salt AE at low <i>Re</i>, particularly in terms of improving efficiency.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939391","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}

{"title":"Setup and Characterization of a Fiber Brillouin Amplifier Module for Optical Frequency Transfer Over Interferometric Fiber Links","authors":"Alexander Kuhl,&nbsp;Sebastian Koke,&nbsp;Andreas Koczwara,&nbsp;Thomas Waterholter,&nbsp;Gesine Grosche","doi":"10.1002/andp.202400414","DOIUrl":"https://doi.org/10.1002/andp.202400414","url":null,"abstract":"<p>The details of fiber Brillouin amplifier modules developed for optical frequency dissemination and installed on the fiber link between Braunschweig and Strasbourg for performing optical clock comparisons are described and documented. The performance of these fiber Brillouin amplification modules is characterized in terms of gain, one-way phase shift, and signal-to-noise ratio across a wide parameter space of signal and pump powers. Finally, upper estimates are derived for the frequency transfer uncertainty contributions resulting from the non-reciprocity induced by the fiber Brillouin amplifier modules based on the characterized one-way phase shift.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202400414","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939670","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}

{"title":"Spatial Chern-Simons Interactions and Complex Magnetic Penetration Depth","authors":"Yong Tao","doi":"10.1002/andp.202400352","DOIUrl":"https://doi.org/10.1002/andp.202400352","url":null,"abstract":"<p>This paper examines the Landau-Ginzburg theory in the presence of spatial Chern-Simons interactions, which typically emerge in Weyl semimetals due to domain-wall motion. It is demonstrated that the incorporation of a purely spatial Chern-Simons term, which violates parity, into the Landau-Ginzburg free energy leads to a complex magnetic penetration depth. This characteristic indicates that, aside from possessing an effective penetration depth, the magnetic field on the surface of the superconductor experiences periodic spatial oscillations, which significantly deviates from the conventional Meissner effect. In particular, it is observed that as the degree of parity breaking, quantified by the strength of the spatial Chern-Simons term, increases, a vortex solution with magnetic field inversion may emerge. With the discovery of superconductivity in certain Weyl semimetals, the possibility of experimentally observing this phenomenon in these materials is anticipated.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939268","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}

{"title":"An Algebraic Roadmap of Particle Theories","authors":"Nichol Furey","doi":"10.1002/andp.202400324","DOIUrl":"https://doi.org/10.1002/andp.202400324","url":null,"abstract":"&lt;p&gt;In this study, the detailed symmetry breaking pathways established in Furey et al. (2024) are bypassed. Instead, a direct route from the Spin(10) model to the Standard Model is enabled via a single algebraic constraint.&lt;/p&gt;&lt;p&gt;This single constraint, however, may be reconfigured as a requirement that three &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;so&lt;/mi&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;10&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$mathfrak {so}(10)$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; actions coincide on a fixed space of multi-vector fermions. This &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;so&lt;/mi&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;10&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mspace&gt;&lt;/mspace&gt;\u0000 &lt;mo&gt;↦&lt;/mo&gt;\u0000 &lt;mspace&gt;&lt;/mspace&gt;\u0000 &lt;mi&gt;su&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;3&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mi&gt;C&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mi&gt;⊕&lt;/mi&gt;\u0000 &lt;mi&gt;su&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mi&gt;L&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mi&gt;⊕&lt;/mi&gt;\u0000 &lt;mi&gt;u&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mi&gt;Y&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$mathfrak {so}(10)hspace{1.42262pt}mapsto hspace{1.42262pt}mathfrak {su}(3)_{textup {C}}oplus mathfrak {su}(2)_{textup {L}}oplus mathfrak {u}(1)_{textup {Y}}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; breaking (from a three-way intersection) mirrors, in certain ways, the &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;so&lt;/mi&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;8&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;mspace&gt;&lt;/mspace&gt;\u0000 &lt;mo&gt;↦&lt;/mo&gt;\u0000 &lt;mspace&gt;&lt;/mspace&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;g&lt;/mi&gt;\u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$mathfrak {so}(8)hspace{1.42262pt}mapsto hspace{1.42262pt}","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202400324","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793968","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}

{"title":"Scoring Anomalous Vertices Through Quantum Walks","authors":"Andrew Vlasic,&nbsp;Anh Pham","doi":"10.1002/andp.202400282","DOIUrl":"https://doi.org/10.1002/andp.202400282","url":null,"abstract":"<p>With the constant flow of data from vast sources over the past decades, a plethora of advanced analytical techniques have been developed to extract relevant information from different data types ranging from labeled data, quasi-labeled data, and data with no labels known a priori. For data with at best quasi-labels, graphs are a natural representation and have important applications in many industries and scientific disciplines. Specifically, for unlabeled data, anomaly detection on graphs is a method to determine which data points do not posses the latent characteristics that are present in most other data. There have been a variety of classical methods to compute an anomalous score for the individual vertices of a respective graph, such as checking the local topology of a node, random walks, and complex neural networks. Leveraging the structure of the graph, the first quantum algorithm is proposed to calculate the anomaly score of each node by continuously traversing the graph with a uniform starting position for all nodes. The proposed algorithm incorporates well-known characteristics of quantum walks, and, taking into consideration the noisy intermediate-scale quantum (NISQ) era and subsequent intermediate-scale quantum (ISQ) era, an adjustment to the algorithm is provided to mitigate the increasing depth of the circuit. This algorithm is rigorously shown to converge to the expected probability with respect to the initial condition.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939495","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}

{"title":"An Algebraic Roadmap of Particle Theories","authors":"Nichol Furey","doi":"10.1002/andp.202400322","DOIUrl":"https://doi.org/10.1002/andp.202400322","url":null,"abstract":"<p>Expanding the results of previous research, a network of algebraic connections is demonstrated between <i>six well-known particle theories</i>. These are the Spin(10) model, the Georgi–Glashow model, the Pati–Salam model, the Left–Right Symmetric model, the Standard Model both pre- and post-Higgs mechanism. A new inclusion of a quaternionic reflection within the network further differentiates <span></span><math>\u0000 <semantics>\u0000 <msup>\u0000 <mi>W</mi>\u0000 <mo>±</mo>\u0000 </msup>\u0000 <annotation>$W^{pm }$</annotation>\u0000 </semantics></math> bosons from the <span></span><math>\u0000 <semantics>\u0000 <msup>\u0000 <mi>Z</mi>\u0000 <mn>0</mn>\u0000 </msup>\u0000 <annotation>$Z^0$</annotation>\u0000 </semantics></math> boson in comparison to the Standard Model. It may introduce subtle new considerations for the phenomenology of electroweak symmetry breaking.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202400322","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793771","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}

{"title":"Optical Properties Control of Hollow Core Microstructured Optical Fibers by Layer-by-Layer Assembled Quantum Dots and Annealing","authors":"Viktor Vorobev,&nbsp;Olga Goryacheva,&nbsp;Julia Skibina,&nbsp;Anton Kozyrev,&nbsp;Alexander Smirnov,&nbsp;Pavlos Lagoudakis,&nbsp;Dmitry Gorin","doi":"10.1002/andp.202400147","DOIUrl":"https://doi.org/10.1002/andp.202400147","url":null,"abstract":"<p>Hollow core microstructured optical fibers (HC-MOFs) have attracted considerable attention in photonics, particularly for their potential in sensing applications in biology and medicine. This work presents a novel approach to modifying HC-MOF inner walls using quantum dots (QDs) and HC-MOF facets via hybrid membranes. These modifications are achieved through layer-by-layer (LbL) assembly, resulting in a reduced light transmission and a spectral red shift. Subsequent annealing restores transmission and induces a spectral blue shift. A similar effect is observed under low-pressure annealing when a mirror is installed on the facet of the modified fibers. An optimal method is demonstrated for these modifications and their impact is analyzed on HC-MOF transmission spectra and QDs photoluminescence. These findings highlight the practical approach to these modifications, paving the way for advanced HC-MOF-based sensors and multimodal probes in biomedical applications.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939231","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}

{"title":"Generating Asymmetric Einstein–Podolsky–Rosen Steering between Two movable Mirrors Exploiting Correlated-Emission Laser","authors":"Jamal El Qars,&nbsp;Ismail Essaoudi,&nbsp;Abdelmajid Ainane","doi":"10.1002/andp.202400373","DOIUrl":"https://doi.org/10.1002/andp.202400373","url":null,"abstract":"<p>Quantum steering is a form of quantum correlation that exhibits an inherent asymmetry, distinguishing it from entanglement and Bell nonlocality. It is now understood that quantum steering plays a pivotal role in asymmetric quantum information tasks. In this work, a scheme is proposed to generate asymmetric steering between two mechanical modes by transferring quantum coherence from a correlated-emission laser. To accomplish this, quantum Langevin equations is derived to describe the optomechanical coupling between two cavity modes and two mechanical modes along with the master equation of two-mode laser. By examining the case where the cavity modes scatter at the anti-Stokes sidebands, it is demonstrated that both two-way and one-way steering can be achieved by adjusting the strength of the field driving the gain medium of the laser. Furthermore, it is showed that the direction of one-way steering can be controlled by varying the temperatures of the mechanical baths or the strengths of the optomechanical couplings. Additionally, it is revealed that the directionality of one-way steering depends on the modes fluctuation levels of the modes, with the mode exhibiting larger fluctuations determining the direction. This highly controllable scheme could potentially be realized with current technology, offering a promising platform for implementing one-way quantum information tasks.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 5","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938814","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}

{"title":"(Ann. Phys. 2/2025)","authors":"","doi":"10.1002/andp.202570003","DOIUrl":"https://doi.org/10.1002/andp.202570003","url":null,"abstract":"<p><b>Entanglement and Perfect One-Way EPR Steering in Cavity Magnonics System</b></p><p>In article number 2400307, Qi Guo and co-workers demonstrate that, for a cross-shaped cavity magnonics system, both the bipartite and tripartite entanglement, and the perfect one-way Einstein–Podolsky–Rosen (EPR) steering can be generated through the Kerr nonlinearity. Especially, different from the conventional protocols introducing additional unbalanced losses or noises, the presented scheme can manipulate the perfect one-way EPR steering only by adjusting the drive detuning. Therefore, the scheme provides a new insight for producing asymmetric EPR steering.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 2","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202570003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389049","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}