物理与天体物理最新文献

{"title":"Anisotropic conformal Carroll field theories and their gravity duals","authors":"Emilie Despontin,&nbsp;Stéphane Detournay,&nbsp;Sudipta Dutta,&nbsp;Dima Fontaine","doi":"10.1007/JHEP09(2025)056","DOIUrl":"10.1007/JHEP09(2025)056","url":null,"abstract":"<p>We investigate anisotropic conformal Carroll field theories and their holographic duals. On the field theory side, we focus on the case with scaling exponent <i>z</i> = 0 in two and three spacetime dimensions. These theories exhibit infinite-dimensional symmetry algebras, including supertranslations and superrotations, and are closely related to, but distinct from, Warped Conformal Field Theories. We construct the associated Carrollian stress tensor, derive its transformation properties, and analyse the structure of correlation functions under different choices of vacua. On the gravity side, we identify specific plane-wave spacetime geometries realizing the global anisotropic conformal Carroll symmetries. We propose, for each scaling exponent, a phase space of asymptotically-plane wave spacetimes and show that the residual diffeomorphisms reproduce the expected infinite-dimensional conformal Carroll algebra, establishing a framework for anisotropic Carrollian holography.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)056.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Gravity, finite duality cascades and confinement","authors":"Fabrizio Aramini,&nbsp;Riccardo Argurio,&nbsp;Matteo Bertolini,&nbsp;Eduardo García-Valdecasas,&nbsp;Pietro Moroni","doi":"10.1007/JHEP09(2025)054","DOIUrl":"10.1007/JHEP09(2025)054","url":null,"abstract":"<p>Cascading RG flows are characteristic of <span>( mathcal{N} )</span> = 1 gauge theories realized by D3-branes probing singularities in the presence of fractional branes. A celebrated example is the Klebanov-Strassler model, which exhibits an infinite cascade that ends with confinement. In this work, we explore a related setup where the addition of an orientifold plane modifies the cascade structure: the RG flow now consists of a finite number of steps, originating from a UV fixed point with a finite number of degrees of freedom. We provide a supergravity solution dual to this flow, that reproduces all its salient features. The string frame curvature can be kept small up to parametrically large values of the holographic coordinate, larger than the one at which the first cascade step occurs.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)054.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Exploring the Recent Progress in InP Quantum Dots and QLEDs: Advances in Synthesis, Architecture, and Applications","authors":"Awais Ali, Iftikhar Hussain, Hanseok Seo, Junhyeok Park, Seongkeun Oh, Dae Yang Oh, Hyung Jin Choi, Soong Ju Oh","doi":"10.1002/lpor.202501169","DOIUrl":"https://doi.org/10.1002/lpor.202501169","url":null,"abstract":"Indium phosphide (InP) quantum dots (QDs) have emerged as eco‐friendly alternatives to cadmium‐based QDs, offering high tunability, excellent color purity, and promising potential for next‐generation optoelectronic devices such as quantum dot light‐emitting diodes (QLEDs). However, their integration into commercial technologies continues to face critical challenges, most notably, the enhancement of photoluminescence quantum yield (PLQY) at the material level and the external quantum efficiency (EQE) at the device level. Although recent advances in colloidal synthesis and surface engineering have led to significant improvements in PLQY, effectively transferring these enhancements to achieve high EQE in QLEDs remains a major hurdle due to limitations in charge injection, charge balance, and interfacial losses. This review provides a comprehensive overview of the progress in InP QD development, focusing on key advancements in colloidal synthesis, core/shell engineering, charge transport layers, interfacial modification, and carrier dynamics. The historical evolution of InP QDs from their initial synthesis in 1989 to their growing role in QLEDs post‐2011 is examined in detail, along with persistent issues such as parasitic emission, charge imbalance, and device instability. Finally, the review explores emerging applications in flexible electronics, wearable displays, a nd high‐resolution LED arrays, and suggests future research directions aimed at enhancing efficiency, stability, and scalability for commercial deployment.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"30 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Little impact of mergers and galaxy morphology on the production and escape of ionizing photons in the early Universe","authors":"S. Mascia, L. Pentericci, M. Llerena, A. Calabrò, J. Matthee, S. Flury, F. Pacucci, A. Jaskot, R. O. Amorín, R. Bhatawdekar, M. Castellano, N. Cleri, L. Costantin, K. Davis, C. Di Cesare, M. Dickinson, A. Fontana, Y. Guo, M. Giavalisco, B. W. Holwerda, W. Hu, M. Huertas-Company, Intae Jung, J. Kartaltepe, D. Kashino, A. M. Koekemoer, R. A. Lucas, J. Lotz, L. Napolitano, S. Jogee, S. Wilkins","doi":"10.1051/0004-6361/202553760","DOIUrl":"https://doi.org/10.1051/0004-6361/202553760","url":null,"abstract":"Compact, star-forming galaxies with high star formation rate surface densities (Σ<sub>SFR<sub/>) are often efficient Lyman continuum (LyC) emitters at <i>z<i/> ≤ 4.5, likely because intense stellar feedback creates low-density channels that allow photons to escape. Irregular or disturbed morphologies, such as those resulting from mergers, can also facilitate LyC escape by creating anisotropic gas distributions. We investigated the influence of galaxy morphology on LyC production and escape at redshifts 5 ≤ <i>z<i/> ≤ 7 using observations from various <i>James Webb Space Telescope<i/> (JWST) surveys. Our sample consists of 436 sources, which are predominantly low-mass (∼10<sup>8.15<sup/> <i>M<i/><sub>⊙<sub/>), star-forming galaxies with ionizing photon efficiency (<i>ξ<i/><sub>ion<sub/>) values consistent with canonical expectations. Since direct measurements of <i>f<i/><sub>esc<sub/> are not possible during the Epoch of Reionization (EoR), we predicted <i>f<i/><sub>esc<sub/> for high-redshift galaxies by applying survival analysis to a subsample of LyC emitters from the Low-Redshift Lyman Continuum Survey (LzLCS), selected to be direct analogs of reionization-era galaxies. We find that these galaxies exhibit, on average, modest predicted escape fractions (∼0.04). In addition, we evaluated the correlation between morphological features and LyC emission. Our findings indicate that neither <i>ξ<i/><sub>ion<sub/> nor the predicted <i>f<i/><sub>esc<sub/> values show a significant correlation with the presence of merger signatures. This suggests that in low-mass galaxies at <i>z<i/> ≥ 5, strong morphological disturbances are not the primary mechanism driving LyC emission and leakage. Instead, compactness and star formation activity likely play a more pivotal role in regulating LyC escape.","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"34 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144995590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Causality bounds from charged shockwaves in 5d","authors":"Sera Cremonini,&nbsp;Brian McPeak,&nbsp;Mohammad Moezzi,&nbsp;Muthusamy Rajaguru","doi":"10.1007/JHEP09(2025)052","DOIUrl":"10.1007/JHEP09(2025)052","url":null,"abstract":"<p>Effective field theories are constrained by the requirement that their constituents never move superluminally on non-trivial backgrounds. In this paper, we study time delays experienced by photons propagating on charged shockwave backgrounds in five dimensions. In the absence of gravity — where the shockwaves are electric fields sourced by boosted charges — we derive positivity bounds for the four-derivative corrections to electromagnetism, reproducing previous results derived from scattering amplitudes. By considering the gravitational shockwaves sourced by Reissner-Nordström black holes, we derive new constraints in the presence of gravity. We observe the by-now familiar weakening of positivity bounds in the presence of gravity, but without the logarithmic divergences present in 4d. We find that the strongest bounds appear by examining the time delay near the horizon of the smallest possible black hole, and discuss on the validity of the EFT expansion in this region. We comment on our bounds in the context of the swampland program as well as their relation with the positivity bounds obtained from dispersion relations.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 9","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP09(2025)052.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Demonstration and Frequency Noise Characterization of a 17 µm Quantum Cascade Laser","authors":"Mathieu Manceau, Thomas E. Wall, Hadrien Philip, Alexei Baranov, Olivier Lopez, Michael R. Tarbutt, Roland Teissier, Benoît Darquié","doi":"10.1002/lpor.202500879","DOIUrl":"https://doi.org/10.1002/lpor.202500879","url":null,"abstract":"The spectral performance of a novel continuous‐wave room‐temperature distributed feedback quantum cascade laser operating is evaluated at the long wavelength of 17 µm. By demonstrating broadband laser absorption spectroscopy of the fundamental vibrational mode of molecules, the spectral range is determined and the spectroscopic potential of this laser is established. The frequency noise is characterized and the line width of this new device is measured, uncovering a discrepancy with the current consensus on the theoretical modeling of quantum cascade lasers. The results confirm the potential of such novel narrow‐line‐width sources for vibrational spectroscopy. Extending laser spectroscopy to longer wavelength is a fascinating prospect that paves the way for a wide range of opportunities from chemical detection, to frequency metrology as well as for exploring light‐matter interaction with an extended variety of molecules, from ultra‐cold diatomic species to increasingly complex molecular systems.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"11 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Multimode tunable atomically thin vibrating-channel-transistor resonators with ultra-efficient electromechanical transduction","authors":"Rui Yang, Jaesung Lee, Philip X.-L. Feng","doi":"10.1063/5.0238991","DOIUrl":"https://doi.org/10.1063/5.0238991","url":null,"abstract":"Transistors based on two-dimensional (2D) semiconductors have emerged as promising candidates for ultra-scaled computing devices. By suspending the 2D channels and inducing mechanical resonance modes in the 2D semiconducting membranes, they form 2D vibrating-channel-transistor (VCT) resonators with ultralow power consumption. Yet on-chip electronic detection and tuning of multimode resonances in these 2D VCT resonators have been challenging due to the ultrasmall vibration amplitudes and rich multimode dynamics at radio frequencies (RF). Here, we leverage the atomic-scale thickness, ultrahigh strain limit, as well as strain-engineering effects on band structure and carrier mobility of 2D molybdenum disulfide (MoS2) sheets, and experimentally demonstrate multimode 2D MoS2 VCT resonators. Using all-electronic signal transduction, we show single-, bi-, and tri-layer MoS2 VCT resonators with up to the 14th resonance mode, thanks to the ultra-efficient electromechanical transduction enabled by internal multiphysics coupling. Measured gate dependency of multimode resonances exhibits frequency tuning ranges of Δf/f0 up to 326%. These 2D VCT resonators provide a unique platform for engineering on-chip integrated and ultra-scaled RF signal transduction, sensing, and analog computing elements with multimode and hyperspectral capabilities.","PeriodicalId":8200,"journal":{"name":"Applied physics reviews","volume":"8 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Publisher Correction: Optomechanical control of long-lived bulk acoustic phonons in the quantum regime","authors":"Hilel Hagai Diamandi, Yizhi Luo, David Mason, Tevfik Bulent Kanmaz, Sayan Ghosh, Margaret Pavlovich, Taekwan Yoon, Ryan Behunin, Shruti Puri, Jack G. E. Harris, Peter T. Rakich","doi":"10.1038/s41567-025-03054-w","DOIUrl":"https://doi.org/10.1038/s41567-025-03054-w","url":null,"abstract":"<p>Correction to: <i>Nature Physics</i> https://doi.org/10.1038/s41567-025-02989-4, published online 11 August 2025.</p>","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"35 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Entropy dynamics of the Heisenberg chain with binary bond disorder","authors":"Di Han,&nbsp;Yan-Kui Bai,&nbsp;Yang Zhao","doi":"10.1007/s10955-025-03505-x","DOIUrl":"10.1007/s10955-025-03505-x","url":null,"abstract":"<div><p>In this article, we study the entropy dynamics of the Heisenberg spin chain with binary bond disorder. We first develop a new method that integrates the purification scheme and the time-evolving block decimation (TEBD) algorithm, named ancillary TEBD, to study the entropy dynamics of spin chains with binary bond disorder. Secondly, with the support of exact diagonalization (ED), we calculate the multifractal dimension of the eigenstates of the bond-disordered Heisenberg chain and the quench dynamics of the inverse participation ratio (IPR), finding that the dependence of the multifractal dimension on the strength of the disorder shows no critical behavior, ruling out the existence of the many-body localization transition in the system. Then, using the ED and the ancillary TEBD method, we study the entropy dynamics of the Heisenberg chain with binary bond disorder and ascertain that the quench dynamics of the entanglement entropy can be divided into four different stages, which are attributed to the competition of the spin interaction and the disorder. Our results propose a new mechanism for the generation of logarithmic scaling behavior of entropy dynamics in disordered systems. Finally, using the ancillary TEBD method, we numerically prove the existence of the transient Mpemba effect in the bond-disordered Heisenberg chain.</p></div>","PeriodicalId":667,"journal":{"name":"Journal of Statistical Physics","volume":"192 9","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Steerability dynamics in double Jaynes–Cummings model under noiseless and noisy environments","authors":"Ya-Xi Ban,&nbsp;Chang-Yue Zhang,&nbsp;Ming-xiao Li,&nbsp;Zhu-Jun Zheng","doi":"10.1007/s11128-025-04914-3","DOIUrl":"10.1007/s11128-025-04914-3","url":null,"abstract":"<div><p>We study the steerability dynamics of two types of Bell-like states in double Jaynes–Cummings model under noiseless and noisy environments. In the absence of noise, we derive analytical expressions for the maximal violations of the three-setting Cavalcanti, Jones, Wiseman, and Reid (CJWR) linear steering inequality for the evolved states, demonstrating that the sudden death phenomenon of steering occurs for both types of initial states. Specifically, we identify a steering invariant that remains invariant under temporal evolution, indicating a ‘transfer’ of steerability among subsystems over time. The influence of asymmetric coupling strengths between the two Jaynes–Cummings models on quantum steerability dynamics is also investigated. By analytically solving the Lindblad form of the master equation, we study the steerability dynamics of two-qubit states in a phase-damping noisy environment, providing a stability analysis for the two types of Bell-like states under noise.</p></div>","PeriodicalId":746,"journal":{"name":"Quantum Information Processing","volume":"24 9","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}