bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mean-field dynamics of open quantum systems with collective operator-valued rates: validity and application
Authors: Fiorelli Eliana , Müller Markus , Lesanovsky Igor , Carollo Federico 
Published: July 2023

Abstract
We consider a class of open quantum many-body Lindblad dynamics characterized by an all-to-all coupling Hamiltonian and by dissipation featuring collective ‘state-dependent’ rates. The latter encodes local incoherent transitions that depend on average properties of the system. This type of open quantum dynamics can be seen as a generalization of classical (mean-field) stochastic Markov dynamics, in which transitions depend on the instantaneous configuration of the system, to the quantum domain. We study the time evolution in the limit of infinitely large systems, and we demonstrate the exactness of the mean-field equations for the dynamics of average operators. We further derive the effective dynamical generator governing the time evolution of (quasi-) local operators. Our results allow for a rigorous and systematic investigation of the impact of quantum effects on paradigmatic classical models, such as quantum generalized Hopfield associative memories or (mean-field) kinetically-constrained models.
Multi-mode resonance plasmonic solar absorber based on pyramid multiary-grating
Authors: Meng Qiqi , Chen Fang , Cheng Shubo , Yang Wenxing , Wang Boyun , Yi Zao 
Published: July 2023

Abstract
In the manuscript, a broad-band perfect absorber based on multilayer-grating and MDM film structure is proposed and numerically studied. Finite difference time domain (FDTD) simulations indicate the absorption performances are originated from Fabry–Perot (FP) resonance effect, localized, and propagating surface plasmons (LSPs and PSPs) effect. The designed absorber possesses over 95% absorption from 697 nm to 2906 nm, and an average absorption of 98.7% is achieved with TM-polarized. For TM-polarized, the designed absorber possesses over 95% between 534 nm and 2475 nm when the oblique-angle is up to 45°, while for a TE-polarized light, the corresponding average absorption remains 80.48% when the oblique-angle is up to 30°. The average absorption is larger than 94% in different environment refractive indexes (1 < RI < 1.5), which illustrates the designed absorber possesses excellent environment RI stability. Another absorber with triple layer grating of different sizes is also designed, and the absorber has more than 95% absorption between 400 nm and 2376 nm, based on the high absorption and waveband, the absorber can find potential applications in solar energy capture. It is believed the proposed work can be applied in plasmonic solar absorber design, thermal emitter, and plasmonic imaging.
The anapole state excited by an oblique incidence
Authors: Tian Shuo , Wang Junqiao , Sun Shuai , He Mengyue , Mao Yu , Ding Pei 
Published: July 2023

Abstract
Anapole states supported by high-refractive-index dielectric nanoparticles have mostly been studied under normal incidence, but this work explores the oblique incidence excitation. For a single silicon nanodisk, as the incident angle (θ) increases, the anapole wavelength undergoes a gradual blueshift, while the wavelength of maximum near-field enhancement remains almost unchanged with increasing E-field enhancement factor (|E/E

0
|) due to phase retardation effect caused by oblique incidence, and some unique features in field distributions differed from normal excitation are exhibited. In the case of a silicon nanodisk array, the anapole state and near-field enhancement are affected by near-field coupling and the phase retardation effect is weakened. With increasing θ, the coupling between the units is enhanced, and the anapole wavelength and maximum field enhancement wavelength both blue shift. The field distributions in anapole wavelength and maximum enhancement wavelength have obvious near-field coupling characteristics. Oblique incident excitation gives us a deeper understanding of anapole state and may have potential applications in nanophotonics.
Random semi-horseshoe for partially hyperbolic systems driven by an external force
Authors: Huang Wen , Liu Xue , Ma Xiao 
Published: July 2023

Abstract
In this paper, we consider the symbolic representation of systems driven by an invertible measurable mapping on a measurable space. We prove that when such a system possesses an equicontinuous uniformly expanding subbundle, then it has a subsystem of its iterations randomly semi-conjugating to the full shift on two symbols. Examples such as random perturbation of partially hyperbolic systems, random composition of partially hyperbolic automorphisms on 3-d tori with a fixed central direction, and fiber partially hyperbolic maps on 3-d tori without stable subbundles are under consideration.
Evaluation of forming limit diagram and bending stiffness of SS316L/polyurethane/SS316L sandwich sheets
Authors: Kamali Andani Mehran , Manesh Habib Danesh , Jahromi Seyed Ahmad Jenabali 
Published: July 2023

Abstract
In this study, SS316L/polyurethane/SS316L was produced by warm roll bonding and direct adhesion without using any adhesive. By changing the polymer core thickness in the sandwich sheet, its mechanical properties, such as tensile behavior and flexural bending strength, were investigated. Also, by performing the Erichsen test and getting the experimental forming limit diagram, the forming behavior of the sandwich sheets in various thicknesses was investigated and compared with that of the monolithic steel sheet. The experimental results showed that by increasing the thickness of the sandwich sheets with polymeric core thickness of 2 mm to 2.5 and 3 mm, the bending stiffness was raised by 111% and 288%; also, the displacement in the second region of the bending test diagram, indicating the bending ability without delamination, was increased from 100% to 109%. Forming limit diagrams of the sandwich sheets were higher than those of the steel sheet, which indicates that the forming behavior of them are higher than that of the monolithic steel sheet.
Tunable topological states in antiferromagnetic MnSb4Se7 material
Authors: Huang Lu , Guo Wen-Ti , Ye Jiefeng , Liu Rui-Qi , Zhang Jian-Min 
Published: July 2023

Abstract
Magnetic topological insulators (MTIs) of the MnBi2xTe3x+1 family, discovered in recent years, have been successfully used to explore various emerging physical phenomena. In this work, the electronic structure and topological properties of the bulk structured antiferromagnetic (AFM) topological insulator (TI) MnSb4Se7 under spin–orbit coupling (SOC) are investigated based on the first-principle calculations. Our results show that the AFM MnSb4Se7 is a non-trivial TI. And applying strain to the AFM MnSb4Se7 can close the band gap. Furthermore, with increasing tensile and compressive strains, AFM MnSb4Se7 undergoes a topological phase transition from a non-trivial TI to a trivial insulator. With increasing strain further, the system undergoes an insulator-metal phase transition. These results suggest that the AFM MnSb4Se7 material has tunable topological properties and is a candidate for exploring interesting topological quantum states and that our work also provides effective help for experimental modulation.
Renormalization formalism for superconducting phase transition with inner-Cooper-pair dynamics
Authors: Su Yuehua , Wu Hongyun , Cao Kun , Zhang Chao 
Published: July 2023

Abstract
As charge carrier of the macroscopic superconductivity, the Cooper pair is a composite particle of two paired electrons, which has both center-of-mass and inner-pair degrees of freedom. In most cases, these two different degrees of freedom can be well described by the macroscopic Ginzburg-Landau theory and the microscopic Bardeen-Cooper-Schrieffer (BCS) theory, respectively. Near the superconducting phase transition where the Cooper pair is fragile and unstable because of the small binding energy, there are non-trivial couplings between these two different degrees of freedom due to such as finite energy and/or momentum transfer. The non-trivial couplings make the original derivation of the Ginzburg-Landau theory from the BCS theory fail in principle as where these two different degrees of freedom should not be decoupled. In this article, we will present a renormalization formalism for an extended Ginzburg-Landau action for the superconducting phase transition where there is finite energy transfer between the center-of-mass and the inner-pair degrees of freedom of Cooper pairs. This renormalization formalism will provide a theoretical tool to study the unusual dynamical effects of the inner-pair time-retarded physics on the superconducting phase transition.
Viable vector coherent oscillation dark matter
Authors: Kitajima Naoya , Nakayama Kazunori 
Published: July 2023

Abstract
We construct a viable model of the vector coherent oscillation dark matter. The vector boson is coupled to the inflaton through the kinetic function so that the effective Hubble mass term is cancelled out. In order to avoid strong constraints from isocurvature perturbation and statistically anisotropic curvature perturbation, the inflaton is arranged so that it does not contribute to the observed large scale curvature perturbation and we introduce a curvaton. We found viable vector coherent oscillation dark matter scenario for the wide vector mass range from 10-21 eV to 1 eV.
Self-interactions of ULDM to the rescue?
Authors: Dave Bihag , Goswami Gaurav 
Published: July 2023

AbstractOne of the most important unanswered questions in cosmology is concerning the fundamental nature of dark matter (DM). DM could consist of spinless particles of very small mass i.e.m∼ 10-22eV. This kind of ultralight dark matter (ULDM) would form cored density profiles (called “solitons”) at the centres of galaxies. In this context, recently it has been argued that (a) there exists a power law relation between the mass of the soliton and mass of the surrounding halo called the Soliton-Halo (SH) relation, and, (b) the requirement of satisfying observed galactic rotation curves as well as SH relations is so stringent that ULDM is disfavoured from comprising 100% of the total cosmological dark matter. In this work, we revisit these constraints for ULDM particles with non-negligible quartic self-interactions. Using a recently obtained soliton-halo relation which takes into account the effect of self-interactions, we present evidence which suggests that, form∼ 10-22eV, the requirement of satisfying both galactic rotation curves as well as SH relations can be fulfilled with repulsive self-couplingλ∼ 𝒪(10-90).
Photometric Observations of Flares on AD Leo from GWAC-F30 and TESS
Authors: Bai Jian-Ying , Wang J. , Li H. L. , Xin L. P. , Li G. W. , Yang Y. G. , Wei J. Y. 
Published: July 2023

Abstract
We observed active M dwarf star AD Leo for 146 hr in photometry by GWAC-F30 and also analyzed 528 hr of photometric data of the star from the Transiting Exoplanet Survey Satellite (TESS). A total of 9 and 70 flares are detected from GWAC-F30 and TESS, respectively. Flare durations, amplitudes and energies are calculated. The distributions of the three properties and flare frequency distributions (FFDs) are given. Within the same energy range of flares, the FFDs of AD Leo obtained in this research and the previous study are basically consistent, which suggests that the magnetic activity of this star has not significantly changed compared to decades ago. Comparing with the average FFD of M-type stars, AD Leo’s FFD is twice higher, indicating that its magnetic activity is more active than that of the average level of the M-type. Based on the TESS light curve, AD Leo’s rotation period is calculated as

2.21

−
0.01

+
0.01

days, supporting the result given in previous research. During the decay phase of the most energetic flare from TESS, we identified quasi-periodic pulsations and determined a 26.5 minute oscillation period, which is currently the longest period for AD Leo, suggesting that long periodic physical processes existed during the flare of this star.
Noise-like pulses in dispersion-controlled fiber lasers
Authors: K Komarov Andrey , M Kobtsev Sergey 
Published: July 2023

Abstract
Noise-like pulse generation in ring lasers in which the anomalous dispersion of the cavity fiber is partially compensated by using a normal-dispersion fiber has been studied by numerical simulation. Solitons moving in this cavity are periodically subjected to temporal compression in the anomalous-dispersion fiber and expansion in the normal-dispersion fiber. It has been found that in these lasers, stationary solitons become unstable and passive mode locking occurs through the emission of bunched noise-like pulses consisting of chaotically evolving solitons. The results are relevant to the development of noise-like pulse generation and methods for controlling lasing regimes.
High rejection stacked single-layer graphene membranes for water treatment
Authors: Laurenti Marco , Fontana Marco , Raffone Federico , Pellegrino Alberta , Bianco Stefano , Tresso Elena , Pirri Candido F , Cicero Giancarlo 
Published: July 2023

Abstract
Nowadays, the production of pure water from saltwater and wastewater is one of the most challenging issues. Polymeric materials represent, at the moment, the best solution for membranes technology but new materials with improved functionalities are desirable to overcome the typical limitations of polymers. In this work, graphene membranes with superior filtration properties are fabricated by stacking up to three graphene layers on a porous support and exploiting the intrinsic nanopores of graphene to filter diclofenac (drug), and methylene blue (dye). The rejection improves increasing the number of the stacked graphene layers, with the best results obtained with three graphene layers. Mass diffusion properties depend on the size of the probe molecule, consistently with the existence of intrinsic nanometer-sized pores within graphene. From the results of an in depth transmission electron microscopy analysis and molecular dynamics simulations it is inferred that graphene stacking results in a decrease of effective membrane pore sizes to about 13 Å diameter which corresponds to 97% rejection for diclofenac and methylene blue after one hour filtration.
Effects of Mn addition on mechanical properties, fracture surface, and electrochemical corrosion resistance of CoCrFeNiAl high-entropy alloys
Authors: Shi Shih-Chen , Liu Chi-Fan , Fang Tzu-Tung , Chen Tao-Hsing 
Published: July 2023

Abstract
High-entropy alloys consisting of CoCrFeNiAl as the major elements and 2–5 at% Mn as the minor element were prepared using a vacuum arc melting method. The crystalline structures of the prepared alloys were identified by x-ray diffraction. Moreover, the mechanical properties of the alloys were examined under quasi-static (10−1, 10−2 and 10−3 s−1) and dynamic (3000, 4000, and 5000 s−1) loading conditions using a universal testing machine and split-Hopkinson pressure bar system, respectively. The experimental results showed that, for all of the HEA alloys, the flow stress and strain rate sensitivity coefficient increased with increasing strain rate. Among all the alloys, that with 3 at% Mn exhibited the best mechanical properties. A significant loss in plasticity was observed as the Mn content increased to 5 at%. The scanning electron microscope observations showed that the favorable mechanical properties of the alloy with 3 at% Mn were the result of a compact dimple structure, which enhanced the toughness. The HEA with 5 at% Mn showed the best electrochemical corrosion resistance among all the alloys due to the formation of dendritic structures at the grain boundaries.
Laser irradiation effects in FeRh thin film
Authors: Merkel D G , Sájerman K , Váczi T , Lenk S , Hegedűs G , Sajti S , Németh A , Gracheva M A , Petrik P , Mukherjee D , Horváth Z E , Nagy D L , Lengyel A 
Published: July 2023

Abstract
The effect of laser irradiation in the energy range from 20 mW to 200 mW was investigated in 109 nm thick Fe51Rh49 film deposited on an MgO (100) substrate. The initial, A1 structure with fully paramagnetic magnetic ordering was achieved after irradiating the samples with 120 keV Ne+ ions with a fluence of 1 × 1016 ion cm−2, as it was confirmed by conversion-electron Mössbauer spectroscopy. At higher powers physical damage of the layer was observed, while in the lowest power case, magnetic force microscopy revealed a well-defined magnetic structure reflecting the laser irradiation pattern. The presented results have the potential to be employed for laser ablation or allows the fabrication of arbitrary ferromagnetic pattern within a homogeneous paramagnetic FeRh thin films.
Large-Scale Data Harmonization Across Prospective Studies
Authors: Pan Ke , Bazzano Lydia A , Betha Kalpana , Charlton Brittany M , Chavarro Jorge E , Cordero Christina , Gunderson Erica P , Haggerty Catherine L , Hart Jaime E , Jukic Anne Marie , Ley Sylvia H , Mishra Gita D , Mumford Sunni L , Schisterman Enrique F , Schliep Karen , Shaffer Jeffrey G , Sotres-Alvarez Daniela , Stanford Joseph B , Wilcox Allen J , Wise Lauren A , Yeung Edwina , Harville Emily W 
Published: July 2023

AbstractThe Preconception Period Analysis of Risks and Exposures Influencing Health and Development (PrePARED) Consortium creates a novel resource for addressing preconception health by merging data from numerous cohort studies. In this paper, we describe our data harmonization methods and results. Individual-level data from 12 prospective studies were pooled. The crosswalk-cataloging-harmonization procedure was used. The index pregnancy was defined as the first postbaseline pregnancy lasting more than 20 weeks. We assessed heterogeneity across studies by comparing preconception characteristics in different types of studies. The pooled data set included 114,762 women, and 25,531 (22%) reported at least 1 pregnancy of more than 20 weeks’ gestation during the study period. Babies from the index pregnancies were delivered between 1976 and 2021 (median, 2008), at a mean maternal age of 29.7 (standard deviation, 4.6) years. Before the index pregnancy, 60% of women were nulligravid, 58% had a college degree or more, and 37% were overweight or obese. Other harmonized variables included race/ethnicity, household income, substance use, chronic conditions, and perinatal outcomes. Participants from pregnancy-planning studies had more education and were healthier. The prevalence of preexisting medical conditions did not vary substantially based on whether studies relied on self-reported data. Use of harmonized data presents opportunities to study uncommon preconception risk factors and pregnancy-related events. This harmonization effort laid the groundwork for future analyses and additional data harmonization.
Catalytic and molecular properties of alkaliphilic and thermotolerant β-etherase from Altererythrobacter sp. B11
Authors: Kumagawa Eri , Katsumata Madoka , Ohta Yukari 
Published: July 2023

ABSTRACT
Phenylpropanone monomers, including guaiacyl hydroxypropanone, are important precursors for the synthesis of various chemicals. The monomers are obtained in a three-step cascade reaction catalyzed by a group of enzymes in the β-etherase system that cleaves the β-O-4 bond, the major bond in lignin. In this study, one of the β-etherase of the glutathione-S-transferase superfamily, AbLigF2, was discovered in genus Altererythrobacter, and the recombinant etherase was characterized. The enzyme showed maximal activity at 45 °C, maintained 30% of its activity after 2 h at 50 °C, and was the most thermostable among the previously reported enzymes. Moreover, N13, S14, and S115, located near the thiol group of glutathione, had a significant effect on the maximum reaction rate of enzyme activity. This study suggests that AbLigF2 has the potential to serve as a thermostable enzyme for lignin utilization and provides insights into its catalytic mechanism.
Common cuckoos do not mimic the size and shape of host eggs
Authors: Akkaynak Derya , Stoddard Mary Caswell 
Published: July 2023

AbstractOften considered a textbook example of coevolution, common cuckoo (Cuculus canorus) eggs are among the best-studied eggs in the world. Female cuckoos belong to genetically distinct host-races, each laying a specific egg type. When host species evolved to reject cuckoo eggs from their nests, cuckoos evolved better egg color and pattern mimicry. In this study, we asked: have cuckoos also evolved eggs that are well matched to host eggs in size and shape, and is the match better for highly discriminating hosts? We used digital image analysis to quantify the sizes and shapes of ~1230 eggs laid by ten European host species and their respective cuckoo host-races. We found that there is some variation in egg size and shape among host species. By contrast, different cuckoo host-races lay eggs that are—on average—similar in size and shape. This generic “one size and shape fits all” cuckoo egg morph is a poor match to most host egg sizes but a good match to most host egg shapes. Overall, we showed that host discrimination behavior was not correlated with the degree of egg size or shape similarity. We concluded that cuckoo females have not evolved egg size or shape mimicry. Alternative explanations for egg shape similarity include biophysical constraints associated with egg formation and selection for incubation efficiency. Finally, to place our results in a broader context, we compared the egg shapes of the common cuckoo and its hosts to those of three Australian parasitic cuckoo species and their hosts.
DNA barcodes of the Greater Antillean butterflies (Lepidoptera: Papilionoidea) suggest a richer, more isolated fauna and higher endemism
Authors: Núñez Rayner , Genaro Julio A , Miller Jacqueline Y , Barro-Cañamero Alejandro , Álvarez Yosiel , Fernández Douglas M , Minno Marc C , Turner Thomas , Turlan Vaughan , Wahlberg Niklas , Pérez-Asso Antonio R , Hausmann Axel 
Published: July 2023

Abstract
We provide the first comprehensive assessment of the Greater Antilles butterfly fauna from a molecular perspective. We gathered COI barcodes for 82% of the archipelago’s 367 species. Barcodes perform relatively well for species identification. A barcode gap separates 83% of the 270 species (represented by at least two sequences) from its nearest neighbour (NN). Of the 31 species represented by single barcodes, 26 have minimum distances from their NN above 2%. Maximum intraspecific distances are higher than 2% for 57 species (21%); however, values are lower within single islands suggesting that a part of these species has evolved into endemic lineages overlooked or unrecognized until today. Barcodes are diagnostic for only 80 of the currently accepted 180 subspecies represented by at least two sequences suggesting numerous conflicts with the infraspecific classification and highlighting its subjectivity. For 20 species, and several subspecies within them, we propose a split into two or more species and elevating several subspecies to the species category. Other data sources including novel or previously ignored morphological characters of adults and immature stages, natural history and/or additional nuclear sequences support these taxonomic changes.