bluuebunny/crossref_metadata_2025_split huggingface dataset:
Energy ratio response at the interface of elastic and dual-porous thermoelastic half-spaces
Authors: Kumar Rajesh , Gupta Vipin , Pathania Vijayata , Barak M S 
Published: September 2023

Abstract
The present study delves into the intricate examination of energy distribution inherent in plane waves interfacing with an elastic half-space and a thermoelastic half-space characterized by a dual porosity framework. Employing the memory-dependent dual-phase-lag (DPL) hyperbolic two-temperature (H2T) thermoelastic paradigm, the investigation encompasses various incident wave types. The governing equations, rendered in a non-dimensional format, are meticulously addressed by applying the rigorous technique of eigenmode analysis. The intricate energy ratios are meticulously ascertained through the judicious imposition of boundary conditions and the discerning employment of reflection and transmission coefficients. Graphical representations have been exhibited, elucidating the effects of diverse parameters on distinct energy ratios within crystalline structures akin to magnesium materials. These parameters encompass but are not confined to the H2T paradigm, the absence of the two-temperature influence, the classical two-temperature approach, memory effects, and a spectrum of distinct kernel functions. The proposed model emanates cross-disciplinary utility, traversing the domains of seismology, acoustics, optics, materials science, structural engineering, and geophysics.
Dendrite operating state in directional solidification of AlCu binary system: numerical benchmark test with the OpenPhase software
Authors: Uddagiri Murali , Antala Pankaj , Shchyglo Oleg , Steinbach Ingo 
Published: September 2023

Abstract
A scientific benchmark test is carried out for a multi-phase-field model with double-obstacle potential by performing three-dimensional simulations of dendritic growth under directional solidification. The effects of key numerical parameters of the multi-phase-field model such as numerical resolution and interface width on the dendrite tip operating state are studied, optimal parameter values are set, and where the operating state becomes independent of varying these parameters is elaborated. Some uncertainties in the proper choice of effective interface mobility in the thin-interface limit are discussed and a pragmatic solution is adopted. The binary alloy Al-Cu with 4 at.% Cu is chosen as the material system because it has been used in many previous experimental and numerical studies to investigate dendrite morphology under directional solidification. The recently developed sharp phase-field model by Finel and colleagues is adapted to the double-obstacle potential function and included in the benchmark test. It is shown how the sharp phase-field model helps in achieving agreeable convergence with larger discretization, thereby reducing the computational cost significantly. The benchmarks are performed using the OpenPhase software.
Exploring ultralight scalar assistance in sterile neutrino dark matter: cold spectrum and unusual X/gamma-ray signatures
Authors: He Yuxuan , Liu Jia , Ma Xiaolin , Wang Xiao-Ping 
Published: September 2023

Abstract
We present a scalar-driven sterile neutrino production model where the interaction with the ultralight scalar field modifies the oscillation production of sterile neutrinos in the early universe. The model effectively suppresses the production of sterile neutrinos at low temperatures due to the heavy scalar mass, resulting in a colder matter power spectrum that avoids constraints from small-scale structure observations. In this model, the dominant dark matter relic is from sterile neutrinos, with only a small fraction originating from the ultralight scalar. Furthermore, the model predicts a detectable X/γ-ray flux proportional to the cubic density of local sterile neutrinos for a light scalar mass due to the light scalar coupling to sterile neutrinos. This distinguishes our model from normal decaying dark matter, which has a linear dependence on the density. In addition, the model predicts a potential low-energy monochromatic neutrino signal that can be detectable by future neutrino telescopes.
A Study of Ten Early-type Contact Binary Stars in the Small Magellanic Cloud
Authors: Chu-Qi Wu , Fu-Xing Li , Sheng-Bang Qian , Jia Zhang , Sarotsakulchai Nopphadon , Zubairi Ahmed waqas , Azizbek Matekov 
Published: September 2023

Abstract
To study early-type binary systems in different evolutionary stages or environments, the Small Magellanic Cloud (SMC) is an ideal laboratory due to its low metallicity compared to that of the Milky Way. We conduct a study on the period changes of the close binary systems with B-type spectral classifications in the SMC using OGLE collections. Ten B-type binaries that show no significant periodic variations based on the current observational data were analyzed. Through O − C analysis, four of the ten early-type binaries show a long-term period decrease, one shows a long-term period increase, and the other five systems are ambiguous due to the limitations of the observational data. Among the period-decreasing systems, two may be mainly caused by mass transfer, while the rest may be caused by angular momentum loss. The Wilson-Devinney code (W-D method) is used to analyze their I-band photometric light curves. According to the W-D results, five early-type binaries are in the deep contact state, three are in the shallow contact state, while two are in the medium contact state, and the temperature ratios of these early-type binaries are all close to unity. The five deep contact binaries are highly unstable systems and therefore serve as important objects for the study of binary mergers. Finally, a discussion on the evolution of early-type binary stars is conducted by combining the analyses of the light curves and the periodic changes of ten early-type binaries, that implies that the majority of early-type binaries in the SMC may form contact binaries from a phase of rapid mass transfer.
Analytical approximate solutions of AdS black holes in Einstein-Weyl-scalar gravity*
Authors: Zhang 张 Ming 明 , Li 李 Sheng-Yuan 盛源 , Zou 邹 De-Cheng 德成 , Zhang 张 Chao-Ming 晁铭 
Published: September 2023

Abstract
We consider Einstein-Weyl gravity with a minimally coupled scalar field in four dimensional spacetime. Using the minimal geometric deformation (MGD) approach, we split the highly nonlinear coupled field equations into two subsystems that describe the background geometry and scalar field source, respectively. By considering the Schwarzschild-AdS metric as background geometry, we derive analytical approximate solutions of the scalar field and deformation metric functions using the homotopy analysis method (HAM), providing their analytical approximations to fourth order. Moreover, we discuss the accuracy of the analytical approximations, showing they are sufficiently accurate throughout the exterior spacetime.
Detection Capability Evaluation of Lunar Mineralogical Spectrometer: Results from Ground Experimental Data
Authors: Gao Fang , Liu Bin , Ren Xin , Liu Da-Wei , Li Chun-Lai 
Published: September 2023

Abstract
The Chang’E-6 mission will first land on the far side of the moon and bring lunar samples back. As a hyperspectral imager aboard the Chang’E-6 lander, the Lunar Mineralogical Spectrometer (LMS), will achieve the goal of spectral detection and mineral composition analysis in the sampling area, and the data of LMS will also be compared with the results of the returned sample laboratory measurements. Visible and near-infrared hyperspectral remote sensing is an effective tool for lunar minerals identification and quantification. The ground validation experiment can be used to evaluate the detection ability of the LMS. According to the modal abundances of lunar minerals and glasses of APOLLO samples, binary mixed samples, ternary mixed samples, and seven-membered mixed samples were prepared. The samples were ground and stirred homogeneous to about 200 mesh (median particle size about 75 μm), to simulate the soil state of the lunar surface. Under the laboratory ambient condition, the 480–3200 nm spectral data of the samples were acquired using the Engineering Qualification Model (EQM) of Chang’E-5 LMS, the performance of which is consistent with the flight model of Chang’E-6 LMS. By fitting the mixed samples’ spectral data of the EQM using the Modified Gaussian Methods, the following conclusions can be drawn: The subtle spectral changes of mixed samples can be detected. The modal abundance of low-Ca pyroxene, high-Ca pyroxene, and plagioclase can be derived based on the spectral parameters such as absorption position, depth or width of the mixed samples, and the correlation coefficients R
2 are better than 82%, indicating that the LMS has good quantitative detection capability.
Single-trial classification of evoked responses to auditory tones using OPM- and SQUID-MEG
Authors: Iivanainen Joonas , Carter Tony R , Trumbo Michael C S , McKay Jim , Taulu Samu , Wang Jun , Stephen Julia M , Schwindt Peter D D , Borna Amir 
Published: September 2023

Abstract

Objective. Optically pumped magnetometers (OPMs) are emerging as a near-room-temperature alternative to superconducting quantum interference devices (SQUIDs) for magnetoencephalography (MEG). In contrast to SQUIDs, OPMs can be placed in a close proximity to subject’s scalp potentially increasing the signal-to-noise ratio and spatial resolution of MEG. However, experimental demonstrations of these suggested benefits are still scarce. Here, to compare a 24-channel OPM-MEG system to a commercial whole-head SQUID system in a data-driven way, we quantified their performance in classifying single-trial evoked responses. Approach. We measured evoked responses to three auditory tones in six participants using both OPM- and SQUID-MEG systems. We performed pairwise temporal classification of the single-trial responses with linear discriminant analysis as well as multiclass classification with both EEGNet convolutional neural network and xDAWN decoding. Main results. OPMs provided higher classification accuracies than SQUIDs having a similar coverage of the left hemisphere of the participant. However, the SQUID sensors covering the whole helmet had classification scores larger than those of OPMs for two of the tone pairs, demonstrating the benefits of a whole-head measurement. Significance. The results demonstrate that the current OPM-MEG system provides high-quality data about the brain with room for improvement for high bandwidth non-invasive brain–computer interfacing.
The future of wearable EEG: a review of ear-EEG technology and its applications
Authors: Kaongoen Netiwit , Choi Jaehoon , Woo Choi Jin , Kwon Haram , Hwang Chaeeun , Hwang Guebin , Kim Byung Hyung , Jo Sungho 
Published: September 2023

Abstract

Objective. This review paper provides a comprehensive overview of ear-electroencephalogram (EEG) technology, which involves recording EEG signals from electrodes placed in or around the ear, and its applications in the field of neural engineering. Approach. We conducted a thorough literature search using multiple databases to identify relevant studies related to ear-EEG technology and its various applications. We selected 123 publications and synthesized the information to highlight the main findings and trends in this field. Main results. Our review highlights the potential of ear-EEG technology as the future of wearable EEG technology. We discuss the advantages and limitations of ear-EEG compared to traditional scalp-based EEG and methods to overcome those limitations. Through our review, we found that ear-EEG is a promising method that produces comparable results to conventional scalp-based methods. We review the development of ear-EEG sensing devices, including the design, types of sensors, and materials. We also review the current state of research on ear-EEG in different application areas such as brain–computer interfaces, and clinical monitoring. Significance. This review paper is the first to focus solely on reviewing ear-EEG research articles. As such, it serves as a valuable resource for researchers, clinicians, and engineers working in the field of neural engineering. Our review sheds light on the exciting future prospects of ear-EEG, and its potential to advance neural engineering research and become the future of wearable EEG technology.
The proton radius and its relatives - much ado about nothing?
Authors: Meißner Ulf-G. 
Published: September 2023

Abstract
I summarize the dispersion-theoretical analysis of the nucleon electromagnetic form factors. Special emphasis is given on the extraction of the proton charge radius and its relatives, the proton magnetic radius as well as the neutron magnetic radius. Some recent work on the hyperfine splitting in leptonic hydrogen and on radiative corrections to muon-proton scattering is also discussed. Some views on future studies are given.
Recent ALICE results on quarkonium production in nuclear collisions
Authors: Paul Biswarup ,   ALICE Collaboration
Published: September 2023

Abstract
Quarkonium production has long been regarded as a potential probe of deconfinement in nucleus-nucleus collisions. Recently, the production of J/ψ via regeneration within the quark-gluon plasma (QGP) or at the phase boundary has been identified as an important ingredient for the interpretation of quarkonium production results from lead-lead collisions at the Large Hadron Collider (LHC). Quarkonium polarization could also be used to investigate the properties of the hot and dense medium created at LHC energies, as well as the initial stages of the heavy-ion collision. In this contribution, the latest ALICE quarkonium results are presented and discussed. These include, among others, the nuclear modification of (prompt, non-prompt and inclusive) J/ψ, the ψ(2S) production, and the J/ψ polarization, all measured in lead-lead collisions at the LHC. The results are compared with available theoretical model calculations.
Disentanglement of hard and soft QCD processes using two-particle correlation functions
Authors: Sahoo Baidyanath , Nandi Basanta Kumar , Dash Sadhana , Pruneau Claude 
Published: September 2023

Abstract
Transverse spherocity (S
0) has evolved as a powerful method to distinguish between soft and hard contributions in an event in small collision systems. We used the two-particle differential-number correlation functions (R
2) and transverse momentum correlation functions (P
2) of charged particles produced in pp collisions at

s

=

7

TeV with the PYTHIA8 model to explore this phenomena. The Δφ projections of these correlation functions in different multiplicity and S
0 classes are discussed. We find that these correlation functions show different shapes and sizes in both near- and away-side with multiplicity and S
0 classes. We observe a strong correlation in the near- and away-side of these correlation functions for jetty-like (hard QCD processes), which become weaker for isotropic (soft QCD processes) in spherocity classes as compared to multiplicity classes. Finally, it is observed that S
0 should be a good observable as compared to multiplicity to disentangle hard and soft QCD processes in a small collision system.
Correlation of heavy-flavour hadron production and charged-particle multiplicity in pp collisions measured by ALICE
Authors: Mdhluli Joyful Elma ,   ALICE Collaboration
Published: September 2023

Abstract
Heavy-flavour (HF) quarks, i.e. charm and beauty, are produced in the early stages of ultra-relativistic collisions via hard scattering processes. The measurement of heavy flavour as a function of charged-particle multiplicity not only provides information on how the production mechanisms are influenced by the event activity, but can also be considered as a tool to test the role of multiple parton interactions. Furthermore, charged-particle multiplicity studies are essential for reference measurements, to tune theoretical models and to provide information on the global characteristics of events. In ALICE, charged-particle multiplicity and heavy-flavour production in the hadronic and electronic decay channels are measured at central rapidity while HF-decay muons and J/ψ → μ
+
μ
− are measured at forward rapidity. In this contribution, results will be presented on relative J/ψ, average D-mesons and leptons from HF hadron decay yields as a function of charged-particle multiplicity in proton-proton (pp) collisions at

s

=
5.02

, 7, 8 and 13 TeV. These results will also be compared to theoretical model calculations.
Real and virtual direct photon measurements with ALICE
Authors: Scheid H. Sebastian ,   ALICE Collaboration
Published: September 2023

Abstract
In this contribution the latest measurements of real and virtual photons in Pb–Pb collisions at

s

N
N

=
5.02

TeV from the ALICE Collaboration are presented. The extracted photon spectra are compared to predictions from state-of-the-art models that explicitly include the whole evolution of the heavy-ion collision as well as measurements at lower energies. Experimental developments that in the future will help to extend the range and procession of the measurements are introduced before concluding with an outlook to possible future measurements at the LHC.
Measurement of R
2(Δη, Δφ) and P
2(Δη, Δφ) correlation functions in pp collisions at
s=13
TeV with ALICE
Authors: Sahoo Baidyanath ,   ALICE Collaboration
Published: September 2023

Abstract
In high-energy collisions, the mechanism of particle production, diffusivity, and conservation of charge and momentum are all revealed by the two-particle normalised cumulants of particle number correlations (R
2) and transverse momentum, p
T, correlations (P
2), which are measured as a function of relative pseudorapidity and relative azimuthal angle difference (Δη, Δφ). We measure these observables in pp collisions at

s

=
13

TeV with transverse momentum (p
T) range of 0.2 - 2.0 GeV/c, to complement the recent ALICE measurements in Pb–Pb collisions and for a better understanding of the jet contribution and nature of collectivity in small systems. The observed correlations on the near- and away-side are qualitatively similar, but differ quantitatively. Additionally, it is shown that the near-side peak of P
2 is much narrower than the near-side peak of R
2 for both charge-independent (CI) and charge-dependent (CD) combinations, similar to the recently published ALICE results in p—Pb and Pb—Pb collisions. These results not only establish a baseline for heavy-ion collisions but also help one to better understand signals that are compatible with the existence of collective effects in small systems because they are sensitive to the interplay between the underlying event and mini-jets in pp collisions.
Probing the QCD phase transition with hadron multiplicity ratios
Authors: Bumnedpan T , Steinheimer J , Bleicher M , Limphirat A , Herold C 
Published: September 2023

Abstract
We investigate the impact of a first-order chiral phase transition and critical point on hadron multiplicity ratios. We model the dynamical expansion of the hot and dense matter created in a heavy ion collision with a Bjorken hydrodynamics expansion coupled to the explicit evolution of the chiral order parameter at center-of-mass energies from 2 to 7 GeV. Hereby, the chiral dynamics is implemented using a Langevin equation including dissipation and noise. We find a strong enhancement of the entropy-per-baryon S/A at lowest energies which is created at the non-equilibrium first-order phase transition. By mapping the initial and final S/A to a hadron resonance gas, we can quantify the shift of hadron multiplicity ratios.
The structure of low-lying 1− states in 90,94Zr from (α,α′γ) and (p,p′γ) reactions
Authors: Crespi Fabio ,   CAGRA collaboration
Published: September 2023

Abstract
The low-lying dipole strength was investigated in 90,94
Zr via the (p,p′γ) reaction at 80 MeV and via the (α,α′γ) reaction at 130 MeV. These experiments were performed at the Research Center for Nuclear Physics (Osaka University) and made combined use of the high-resolution magnetic spectrometer Grand Raiden and the CAGRA HPGe gamma array. The comparison of our results with existing (γ,γ′) reaction data shows differences in the excitation patterns. In the present experimental conditions, in fact, both α and p probes are exciting the investigated 1− states mainly through the short-range nuclear force, expected to favour the population of surface excitations. Distorted Wave Born Approximation (DWBA) calculations were made using form factors built assuming specific transition densities, characterized by a strong neutron component at the nuclear surface and based on Random Phase Approximation (RPA). A combined analysis of the (α,α′γ) and (p,p′γ) data was performed to investigate the isoscalar character of the 1− states in 90,94Zr. Although an overall general consistency was obtained in the studied energy intervals, not all (p,p′γ) cross sections were well reproduced using the isoscalar strength deduced from (α,α′γ) data. This might suggest that the mixing of isoscalar and isovector components and the degree of collectivity are not the same for all the 1− states studied.
Cluster aspects of collinear cluster tri-partition (CCT)
Authors: Pyatkov Yu V , Kamanin D V , Carjan N , Okada K , Goryainova Z I , Kuznetsova E A , Malaza V D , Strekalovsky A O , Strekalovsky O V , Wyngaardt S M , Zhuchko V E 
Published: September 2023

Abstract
New results demonstrating the so-called Ni-bump being the most populated mode of the collinear cluster tripartition (CCT) of 252Cf(sf) are presented. The physical scenario of this effect is discussed. It is tested by calculations of potential energy surfaces for the fission of the intermediate fragments formed after first rupture of the mother nucleus. Fission barriers are extracted and mass asymmetries at saddles are compared with the masses of the fission fragments that take part in the Ni-bump.
Nuclear symmetry energy at work in heavy ion reactions: new results from the INDRA-FAZIA apparatus
Authors: Ciampi C , Piantelli S , Casini G , Pasquali G , Baldesi L , Barlini S , Borderie B , Bougault R , Camaiani A , Chbihi A , Dell’Aquila D , Cicerchia M , Dueñas J A , Fable Q , Fabris D , Frankland J D , Frosin C , Génard T , Gramegna F , Gruyer D , Henri M , Hong B , Kim S , Kordyasz A , Kozik T , Kweon M J , Lemarié J , Le Neindre N , Lombardo I , Lopez O , Marchi T , Nam S H , Ordine A , Ottanelli P , Park J , Park J H , Pârlog M , Poggi G , Quicray J , Rebillard-Soulié A , Stefanini A A , Upadhyaya S , Valdré S , Verde G , Vient E , Vigilante M ,   INDRA-FAZIA collaboration
Published: September 2023

Abstract
The recently coupled INDRA-FAZIA apparatus offers unique opportunities to investigate heavy ion collisions at Fermi energies by combining the optimal identification capabilities of FAZIA and the large angular coverage of INDRA. We present a selection of the results of the analysis of the first experimental campaign performed with INDRA-FAZIA, in which the four reactions 58,64Ni+58,64Ni have been studied at two different beam energies (32 and 52 MeV/nucleon) in the intermediate energy regime. The present work is focused on the isospin diffusion effects in semiperipheral and peripheral collisions. A stronger isospin equilibration is found at 32 MeV/nucleon than at 52 MeV/nucleon, as expected due to a shorter projectile-target interaction time in the latter case.