bluuebunny/crossref_metadata_2025_split huggingface dataset:
Channel Separation of Secondary Generated Radiation in Atomic Gases Irradiated by Orthogonal XUV and Infrared Pulses
Authors: Romanov A A , Silaev A A , Sarantseva T S , Flegel A V , Vvedenskii N V , Frolov M V 
Published: November 2024

Abstract
Based on the numerical solution of the three-dimensional time-dependent Schrödinger equation, we calculate the secondary generated radiation induced by hydrogen atoms in linearly polarized extreme ultraviolet (XUV) and intense infrared (IR) pulses. We show that XUV-induced channels of secondary generated radiation (second harmonic of the XUV pulse and XUV-assisted high-order harmonic generation) can be well separated at the orthogonal geometry of two pulses by polarization measurements. It is demonstrated that at the orthogonal geometry the accuracy of IR-field retrieving based of XUV second harmonic generation can be significantly increased in comparison with the case of collinear geometry, for which the XUV-assisted HHG channel interferes with the XUV second harmonic generation.
Quantum correlations and laser threshold
Authors: Papoff Francesco , Lippi Gian Luca , D’Alessandro Giampaolo , Oppo Gian-Luca 
Published: November 2024

Abstract
We present a model of nanolasers that includes the effect of all two-particle quantum correlations. We find that the lasing starts with a finite coherent amplitude and that lasing and non-lasing solutions coexist.
Nonlinear coherent modes and atom optics
Authors: Yukalov V.I. , Yukalova E.P. , Bagnato V.S. 
Published: November 2024

Abstract
By pumping energy into a trapped Bose-Einstein condensate it is possible to generate nonlinear coherent modes representing non-ground-state condensates. A Bose-condensed system of trapped atoms with nonlinear coherent modes is analogous to a finite-level atom considered in optics which can be excited by applying external fields. The excitation of finite-level atoms produces a variety of optical phenomena. In the similar way, the generation of nonlinear coherent modes in a trapped condensate results in many phenomena studied in what is termed atom optics. For example, there occur such effects as interference patterns, interference current, Rabi oscillations, harmonic generation, parametric conversion, Ramsey fringes, mode locking, and a dynamic transition between Rabi and Josephson regimes. The possibility of creating mesoscopic entangled states of trapped atoms and entanglement production by atomic states in optical lattices are studied.
Ghost vortices and how to turn them real
Authors: Chaika Andrii , Richaud Andrea , Yakimenko Alexander 
Published: November 2024

Abstract
Ghost vortices represent a unique class of topological excitations in quantum fluids, and are notoriously difficult to investigate because they are located in regions where superfluid density is low. In this work, we introduce a controlled platform for generating and observing these elusive vortices. By inducing rotation in an imbalanced mixture of two-component Bose-Einstein condensates (BECs), we create necklaces of real vortices in the majority component, with cores populated by particles from the minority component. The wavefunction associated to the state of the latter is characterized by the presence of ghost vortices. These ghost vortices exhibit an arrangement mirroring their real counterparts, forming a “dual” ghost-vortex necklace, and play a crucial role in sustaining the overall dynamics of the mixture. Additionally, we propose an experimental approach for directly observing ghost vortices in an ultracold mixture of 23Na + 39K. Through a controlled quenching of the inter-component scattering length, expelled atoms from vortex cores diffuse and swirl around unpopulated phase singularities, enabling their direct observation.
Condensates Breaking Up Under Rotation
Authors: Dutta S , Lode A U J , Alon O E 
Published: November 2024

Abstract
The ground state of a rotating Bose-Einstein condensate trapped in a two-dimensional anharmonic–anisotropic potential is analyzed numerically at the limit of an infinite number of particles. We find that the density breaks up along the x direction in position space and along the py
direction in momentum space together with the acquisition of angular momentum. Side by side, the anisotropies of the many-particle position variances along the x and y directions and of the many-particle momentum variances along the py
and px
directions become opposite when computed at the many-body and mean-field levels of theory. All in all, the rotating bosons are found to possess unique correlations at the limit of an infinite number of particles, both in position and momentum spaces, although their many-body and mean-field energies per particle and densities per particle coincide and the condensate fraction is 100%. Implications are briefly discussed.
Influence of core coupling on spectral characteristics of 7-core Yb-doped fiber laser with fs-inscribed FBGs
Authors: Kuznetsov Alexey G. , Wolf Alexey A. , Egorova Olga N. , Semjonov Sergey L. , Dostovalov Alexander V. , Podivilov Evgeniy V. , Babin Sergey A. 
Published: November 2024

Abstract
Multicore fiber (MCF) is treated now as a perspective medium for high-power fiber lasers. Here we report on the point-by-point femtosecond (fs) inscription of highly-reflective fiber Bragg grating (FBG) array in all cores of 7-core Yb-doped fibers. By using such complex mirror, we achieved high-power laser generation at a wavelength of 1064 nm in two types of active MCF with different core-to-core distance. At cladding pumping by a 976-nm laser diode of 50 W power, both the MCFs with FBG cavity generate nearly the same output power of up to 33 W, but the laser spectra behave principally different since the generation of the cores is almost independent or strongly coupled in these two cases. To study the effect, we develop analytical model and perform its experimental verification identifying the role of core coupling and FBG characteristics on the generated mode and its spectrum. It is shown that the coupling of the MCF cores leads to the formation of supermodes and their hybridization when reflected from an array of highly-reflective FBGs in a resonator, therefore generation occurs with the same spectrum in all cores, despite the significant difference in the central wavelengths and the shape of the reflection spectra of individual FBGs.
Ontology of Addressed Fiber Bragg Structures as a New Type of Sensor Elements
Authors: Morozov O G , Zh Sakhabutdinov A 
Published: November 2024

Abstract
Addressed Fiber Bragg Structures (AFBS) serve a dual purpose, acting as complex-sensitive elements with two distinct configurations: one involving two Fiber Bragg Gratings (2λ-AFBS) with different Bragg frequencies, and the other employing a single FBG with two π-phase shifts (2π-AFBS). The difference frequency between these configurations acts as the unique AFBS address, which remains constant regardless of the measured physical fields. Additionally, they function as a two-frequency laser radiation source capable of operating in both reflection and transmission modes, corresponding to the structure above. When the difference frequency is unique for each AFBS, it enables self-multiplexing of sensors. In this article, we present the ontology of AFBS, encompassing parent structures with 2λ- or 2π-components and their successor AFBS with three spectral components. These structures offer various combinations of difference frequencies, both symmetrical and asymmetric, allowing them to address and convert information signals to the low-frequency range while also mitigating collisions caused by the relative shifts of structures’ spectra during measurements. We also explore the subjects of interrogation for these structures and discuss their calibration, as well as the future prospects of AFBS development, including the usage of hybrid AFBS.
Nuclear Astrophysics Using Laser-Driven Neutrons
Authors: Hayakawa Takehito 
Published: November 2024

Abstract
Progress in laser physics has enabled us to produce various particles such as electrons, photons, and ions from high field plasma generated from the interaction between high power laser and materials. Neutrons could be generated by nuclear reactions on the second target behind the first target. At present, it is possible to generate neutrons with a flux of up to 1011 neutrons/shot. These neutrons are suitable for the study of nuclear astrophysics. We present the perspective and the present activity for the application to the nuclear astrophysics.
Inverse problem-solving method applied to acoustic characterisation of a thin film using Debye series model
Authors: Manoochehrnia Pooyan , Marechal Pierre , Leduc Damien , El-Kettani Mounsif Ech-Cherif 
Published: November 2024

Abstract
In this paper, it is proposed to solve an inverse problem with the perspective of determining the ultrasonic properties (thickness, longitudinal wave velocity, density and attenuation coefficient) of a thin epoxy resin film deposited on a glass substrate with well-known properties. The question focuses on finding acoustic parameters of the structure and the transducer thanks to a numerical implementation of a physical model matching the experimental ultrasonic response. The Debye Series Model (DSM) has been used to model the structure. A step by step procedure is implemented where at each step one parameter is estimated by minimizing the MSE (Mean Square Error) between simulated model and experimental signal. Estimated parameters are checked to be physically viable. At beginning an initial set of parameters are announced together with related waveforms and at the end the final adjusted parameters are presented beside finally obtained waveforms.
Acoustic radiation force generated by vortex beams on microbubbles embedded in a soft hydrogel
Authors: Penneron Antoine , Brunet Thomas , Baresch Diego 
Published: November 2024

Abstract
Acoustical tweezers are recently developed experimental tools that enable the contactless manipulation of a wide range of particles in fluid media. Their good penetrability, high trapping strength and biocompatibility have poised these acoustic methods as interesting alternatives to other well established optical and magnetic manipulation techniques. This work describes preliminary steps in the development of an active approach to measure the local elasticity of soft hydrogels using single-beam acoustical tweezers. The displacement of a microbubble embedded in a hydrogel is induced by the acoustic radiation force of a focused vortex beam. Microbubbles approximately 100 µm in size can be displaced by a few microns in soft hydrogels with a typical shear modulus ranging from 10 to 100 Pa, consistent with a radiation force in the micronewton range. The applied force can be modelled using resolved measurements of the spatial properties of the incident pressure field. Using a simple elastic model for the bubble motion in the medium, the net displacement enables the experimental estimation of the applied force. We find a relatively good quantitative agreement between the radiation force model and our experimental discussion. Possible reasons for the discrepancies are discussed. Overall, the proposed approach presents real benefits compared to other conventional methods to assess the mechanical properties of soft and fragile materials, as it can be considered minimally intrusive, local, and well-adapted to probe thick and opaque-to-light materials in bulk.
Development of multichannel readout electronics system for MWPC of heavy ion radiotherapy
Authors: Xiong Jianfei , Zhou Rong , Pu Guocui , Zhang Xiang , Wang Zhonghai , Pu Yuehu 
Published: November 2024

Abstract
A customized Multi-Wire Proportional Chamber (MWPC) was developed for beam monitoring in heavy ion radiotherapy at West China Hospital of Sichuan University. We designed a miniaturized readout electronics module to ensure the device is compact and lightweight enough to fit into the treatment head. Each module is equipped with 13 DDC316 chips and a Field Programmable Gate Array (FPGA) to process 200-channel signals from the MWPC, including charge integration, digital-to-analog conversion, beam spot localization, and an optical module to enable 100-meter signal transmission from the module to the Irradiation Control System (ICS). Test results show that the linearity of the readout data is better than 1% over the dynamic range of charge input from 60 fC–12 pC. The relative energy resolution of electronics is about 4.87% at a minimum input charge of 60 fC. The test results illustrate that the positional resolution is better than 0.1 mm after channel conformance correction with a MWPC, utilizing a 30 mm diameter X-ray beam at an energy of 19.5 keV.
Introduction
Authors: Naha Souvik 
Published: November 2024

Abstract
This book delves into the complex interplay between cricket and various socio-political dynamics in the twenty-first century. It examines how cricket, as a widely beloved sport, influences and reflects identity politics, nationalism, and state authority across different regions, including South Asia, Australia, Western Europe, Southern Africa, and North America. By analyzing the sport’s role in shaping national identity and providing a platform for expressing national aspirations, the book offers a unique perspective on global identity politics. It also explores how cricket facilitates the negotiation of gender, sexual, ethnic, and racial identities, making it a significant medium for understanding modern societal structures and interactions.
Brand It Like Ben Simmons
Authors: Heenan Tom 
Published: November 2024

Abstract
Since its inception in 2011, the Big Bash League (BBL) season has been extended to meet broadcaster and public demands. The competition now colonizes much of Australia’s cricketing and holiday seasons, pushing Test, Sheffield Shield, and the fifty-over format to the margins. Unlike these traditional formats, the BBL targets non-cricket fans, notably families and ‘theatre-goers’, who want a compact three-hour entertainment package rather than a drawn-out, five-day Test match. This development is reflected in how cricket is increasingly played and marketed. The older generation, raised on traditional formats, is giving way to a younger ‘theatre-goer’ set, clad in franchise’s merchandise and wanting the full BBL package. Allegiances to the national team now compete with loyalties to franchised brands. As these loyalties intensify, fuelled by marketers, Test cricket’s schedule will be further reduced and the Sheffield Shield sidelined, as the interests of players, Cricket Australia (CA), and the media align to profit from the BBL. Its abbreviated format, coupled with growing media rights deals, will enable players to extend their careers and contracts. Longer seasons will provide media outlets with more content, which, unlike cricket’s longer formats, are better suited to primetime TV. While free-to-air and pay-TV broadcasters will attract higher advertising rates and subscriptions, Cricket Australia will profit from leasing franchises and growing media rights deals. This new reality was etched on the face of the young Stars supporter whose tears symbolized his love of the franchise, and the growing corporatization and Americanization of the Australian cricket market.
Nationalism on the ‘Back Foot’ but Still Not Out
Authors: McCree Roy 
Published: November 2024

Abstract
Cricket has been an integral component of West Indian nationalism, identity, and anti-imperialism since the early twentieth century. Invariably, West Indian cricket and cricketers came to represent these lofty ideals, as well as a form of symbolic political capital, whose principal raison d’être was not just to resist historical modes of domination but also to project West Indian sovereignty, empowerment, and unity across its various islands and ethnic groups. Against this background and based on documentary sources (notably media reports and official reports on West Indies cricket), this chapter has two major objectives. Firstly, it examines how the commercialization of cricket in the region through the emergence of the T20 format in 2013, fashioned along the lines of American franchise sport, has provided a context for destabilizing as well as reinforcing the notions of nationalism, national, and regional identity symbolized by the game. Secondly, it analyses the tensions arising from the participation in T20 cricket by West Indian players and playing for the regional West Indies cricket team, which has caused the players to be accused of surrendering political consciousness for ‘cash consciousness’. Drawing on the work of Bourdieu, exploring T20 cricket in the West Indies provides an opportunity to examine this clash between cricket as symbolic political capital and cricket as economic capital, which speaks to how the format has served to reflect, reinforce, and disrupt the traditional political construction of the game in an era when it has become much more commercialized and globalized.
Political Mapping
Authors: Leonard-Fleckman Mahri 
Published: November 2024

Abstract
Chapter 3 begins to explore textual representations by examining political maps and boundary descriptions of the Iron Age Shephelah. These maps have played a powerful role in archaeological and historical debates about identity and have retained a powerful hold in the Western political imagination. Because ancient Gath is left out of these political maps, the chapter focuses on ancient Timnah as its borders are represented in the books of Joshua and Chronicles, and in Sennacherib’s campaign in the Assyrian Royal Annals. The chapter argues that the distinct visions of economic and political control of the Shephelah in these different representations reveal a creative scribal conversation and literary artistry, though not historical accuracy, of political control in the region in the Iron Age. In other words, textual representations about Iron Age Timnah tell us less about Timnah than about the scribal art of re-presenting it politically.
A similar coast effect of geoelectric field directions in a three-block boundary zone during geomagnetic storm pulses
Authors: Xin Zhang , De Santis Angelo , Perrone Loredana , Xiaoping Wu 
Published: November 2024

Summary
The coast effect, which enhances the geoelectric field during geomagnetic pulses at the sea-land boundary, is a classic topic in geomagnetism. This paper focuses on a similar coast effect observed at the boundary zones of three tectonic blocks, i.e. Alax, Ordos, and Tibetan. We used multiple geoelectric field data of the block boundary zone to obtain the surface current density and charge accumulation during two geomagnetic storm pulses in 2015. Then, we calculated the amplitudes of Spherical Elementary Current Systems (SECS) and telluric currents using the Markov Chain Monte Carlo method. The results indicate that the polarized directions of induced charges and currents are perpendicular to the block boundaries and tend to point towards the interior of the Tibetan block. Additionally, the Parkinson vectors of geomagnetic pulses point towards regions with lower surface resistivity. The amplitude of telluric currents at a depth of 10 km is one of the three SECS at 110 km, which locates sources in the boundary zone between Alax block and Tibetan block. Similar to the coast effect in the sea-land boundaries, we identify an analogous phenomenon in three-block boundary zone, demonstrating the accumulation of induced currents and charges during geomagnetic storm pulses. This study provides a novel empirical basis to promote our understanding of geomagnetic storm pulses induced charges enhancements at discontinuous conductivity interfaces on the Earth.
“My Lungs Are Better, but Now My Back Hurts.”: Back Pain after Pneumonia
Authors: Shivers Joseph P. , Standaert Christopher J. 
Published: November 2024

Abstract
The evaluation of all patients with low back pain (LBP) should include consideration of “red flag” conditions, including infection, such as vertebral osteomyelitis. Infection can be challenging to identify, as many people present with indolent pain and no fever. Some historical features that place individuals at higher risk for infection include intravenous drug use, diabetes mellitus, immunosuppression, rheumatic disease, alcoholism, liver failure, renal failure, a recent bacterial infection, and the presence of an indwelling venous catheter. Erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) are excellent screening tests. If elevated, urgent/emergent blood cultures and imaging with plain X-ray and a magnetic resonance imaging (MRI) are indicated. If inconclusive, it may be necessary to repeat these in 2 weeks. All patients with apparent vertebral osteomyelitis should be evaluated by an infectious disease specialist and a spine surgeon. Most patients are managed nonoperatively with antibiotics, ideally following identification of the causative organism.
“I’m Really Scared.”: Acute Back and Leg Pain with Incontinence
Authors: Reitman Charles 
Published: November 2024

Abstract
Cauda equina syndrome (CES) is a clinical diagnosis representing dysfunction of the nervous system at the cauda equina. Symptoms include bowel and bladder dysfunction, sensory changes, and possible loss of distal motor function in the lower extremities. Patients often report pain in the back, buttocks, and/or lower extremities, but not always, and the hallmark features are the signs and symptoms related to neurological deterioration. Acute or subacute onset CES is almost always due to a relatively abrupt compression of the thecal sac, generally from conditions including but not limited to disc herniation, epidural hematoma, tumor, or infection. MRI is the imaging study of choice to confirm compression of the cauda equina. Progressive loss of neurological function is an emergency, and evaluation and treatment should proceed without delay. At acute presentation, hold diet and anticoagulation medications until a definitive treatment plan is established, as emergency surgery is likely needed.
“I Was Hurt at Work, and I’ll Get Hurt Again if I Go Back.”: Back Pain and Workplace Injury
Authors: Barber Kristina , Standaert Christopher J. , Brakke Holman Rachel 
Published: November 2024

Abstract
Low back pain (LBP) is the second most common reason for short-term disability claims and the most common reason for long-term disability claims in the United States. It is often nonspecific with no red flag symptoms. Absent concerns for significant pathology like fracture or neurologic loss, imaging of the lumbar spine tends to show expected age-related changes and is unlikely to alter an initial recommendation of nonsurgical, noninvasive care. Coping with LBP has more to do with psychosocial confounders inside and/or outside the workplace than the magnitude of pain itself. Most injured workers will improve and return to work, so identifying risk factors for deviation from this expected pattern is important. There are many health-related, work-related, and systems-related factors predicting failure to return to work that should be identified.. While engaged in active treatment including physical therapy, light duty is recommended to promote return to work and mitigate psychosocial comorbidities.