bluuebunny/crossref_metadata_2025_split huggingface dataset:
Large-scale multiconfiguration Dirac-Hartree-Fock calculations of atomic data, Landé gj
-factors and hyperfine constants of the neutral Rn-211 isotope
Authors: Salah Wa’el , Hassouneh Ola 
Published: June 2024

Abstract
We computed the atomic data of ns[K]J ( n = 7, 8, 9), np[K]J ( n = 7, 8, 9), nd[K]J ( n = 6, 7, 8, 9), and nf[K]J ( n = 5, 6, 7, 8) and 5g[K]J autoionized Rydberg spectra of the neutral radon-211 isotope. The computations are carried out by using the Multiconfiguration Dirac-Hartree-Fock method (MCDHF) together with the relativistic configuration (RCI) approach. The convergence of the obtained results is monitored by incorporating relativistic electron-electron correlation, the Breit-interaction effect, self-energy, and vacuum-polarization corrections. As a result, we acquired the energy levels, transition rates, oscillator strengths, Landé

g

J

-factors and magnetic dipole hyperfine constants. The transition parameters between the levels belonging to different series are computed for all allowed electric dipole transition selection rules. The present results are in very good agreement with other experimental and theoretical data available in the literature database. The present data could be useful in predicting spectral lines of radon via astrophysics and stellar spectroscopy.
Effect of La2O3 on the optical, thermal, structural and radiation shielding properties of TeO2–ZnO–BaO glasses
Authors: Karthikeyan B , Manikandan N 
Published: June 2024

Abstract
Influence of lanthanum oxide (La2O3) on various properties of melt quenched zinc barium tellurite glasses (TeO2–BaO–ZnO) have been investigated. Lanthanum was limited to 10 mol% beyond which the glass formation ability was affected leading to crystallization in the proposed tie-line. Glass transition temperature improved with lanthanum oxide incorporation, while the density and energy band gap values showed a minimum at 5 mol%. The observed variation with lanthanum oxide doping was clearly elucidated from Raman spectral data, which indicated their influence in modifying the host ternary glass network. Radiation shielding parameter calculations showed a larger mass and linear attenuation coefficients for glasses doped with 10 mol% lanthanum oxide, indicating the influence of heavier oxides in improving the shielding properties and consequently acting as replacement candidate for toxic lead-based compounds.
Giant and nonreciprocal photonic spin Hall effect in asymmetric multilayered structure with bulk Dirac semimetal
Authors: Liu Wentao , Zhang Mengru , Yin Dekang , Da Haixia 
Published: June 2024

Abstract
The nonreciprocal photonic spin Hall effect features the different reflected or transmitted spin shifts along two opposite incident wave propagating directions. However, previous investigations have always focused on the features of the photonic spin Hall effect along one incident wave propagating direction. How to achieve the nonreciprocal photonic spin Hall effect remains obscure. Here, we theoretically study the nonreciprocal photonic spin Hall effect in the asymmetric multilayered structure containing the Bulk Dirac Semimetal and other dielectric materials. It is found that under the horizontal polarization the maximum reflected spin shift value along one direction is up to around

−
14.4

times of the incident wavelength at

70.88
°
,

but it is only

0.46

times of the incident wavelength at

73.2
°

along the other direction, which reflects the nonreciprocity of photonic spin Hall effect and thus can act as the photonic spin Hall diode. Such a sizeable directional difference between the reflected spin shifts along these two opposite directions originates from the fact that this structure loses its mirror symmetry and becomes an asymmetrical one, and the obvious difference in the values of the reflected spin shifts along the two directions can be attributed to the large difference in the values of

∣
r

s

/
r

p

∣
.

At the same time, we find that the Fermi energy of the Bulk Dirac Semimetal can effectively tune the spin shift along the backward direction, as well as the difference between the spin shifts for two different propagating directions, which causes the controllable nonreciprocal photonic spin Hall effect. Our results establish the alternative configuration for realizing the nonreciprocal photonic spin Hall effect, which facilitates the potential applications in the spin photonic devices.
Q-Map: quantum circuit implementation of boolean functions
Authors: Hajjdiab Hassan , Khalil Ashraf , Eleuch Hichem 
Published: June 2024

Abstract
Quantum computing has gained attention in recent years due to the significant progress in quantum computing technology. Today many companies like IBM, Google and Microsoft have developed quantum computers and simulators for research and commercial use. The development of quantum techniques and algorithms is essential to exploit the full power of quantum computers. In this paper we propose a simple visual technique (we call Q-Map) for quantum realization of classical Boolean logic circuits. The proposed method utilizes concepts from Boolean algebra to produce a quantum circuit with minimal number of quantum gates.
Collective excitation of quantum droplet with different ranges of the interaction of Pöschl-Teller potential
Authors: Banerjee Avra , Majumder Dwipesh 
Published: June 2024

Abstract
In this article, we studied quantum droplet with the Pöschl-Teller (PT) interaction potential between the Bose atoms. The Gross–Pitaevskii (GP) equation governs the system. The range and strength of the PT interaction can be adjusted. First, we studied the quantum droplet’s density variation for various PT interaction parameters by the imaginary-time split-step Crank-Nicolson (CN) method. We then used the Bogoliubov theory to examine the collective excitation spectra. We observed that sharp roton forms and phonon modes are missing during long-range interactions. There is a gap at the zero momentum zone due to the long-range PT interaction, which increases with the range and strength of the interaction.
Portfolio optimization based on quantum linear algorithm
Authors: Guo Zhengming , Song Tingting , Lin Ge 
Published: June 2024

Abstract
The rapid development of quantum computation has brought new possibilities to many fields. Especially in finance, quantum computing offers significant advantages. Recently, the portfolio optimization problem has been solved by a quantum algorithm with a mean-variance model with sparse data. However, the mean-variance model does not match the practice, and furthermore, the data is mostly dense. To fill the gap, we propose the Quantum-Enhanced Portfolio Optimization based on the mean-semi-variance model, where the mean-semi-variance model incorporates an optimized risk definition. The algorithm also effectively reduces the time complexity of solving high-dimensional linear systems and achieves sparsity independence.
Comparing optical deposition and drop casting for enhanced tunability in Q-switched fiber lasers using a biogenic AgNPs-CS saturable absorber
Authors: Zalkepali N U H H , Awang N A , Zamri A Z M , Mahmud N N H E N , Mun K L 
Published: June 2024

Abstract
This study presents the successful synthesis and characterization of silver nanoparticles (AgNPs) using Camellia sinensis (CS) leaf extract as a biogenic saturable absorber (SA) for tunable Q-switched applications. The AgNPs-CS SA was fabricated through optical deposition and drop casting methods into a fiber ferrule. The nonlinear optical properties of AgNPs-CS as SA were investigated, revealing a modulation depth of 24.37% and a saturation intensity of 0.15 MW cm−2. Q-switching based on optical deposition exhibited a pump power of 213.40 mW, a 3-dB bandwidth of 3.20 nm, a pulse repetition rate of 78.74 kHz, and a pulse duration of 2.38 μs. Meanwhile, the drop casting method showed a 3-dB bandwidth of 2.0 nm, a pulse repetition rate of 53.05 kHz, and a pulse duration of 5.53 μs for the Q-switched pulse. Additionally, the tunability of wavelength in Q-switching using AgNPs-CS SA was investigated. The drop casting method achieved a tuning range of 32.00 nm, covering the S-band to C-band, while the optical deposition technique resulted in a tuning range of 54.20 nm, spanning from the C-band to L-band. Notably, this work represents the first utilization of AgNPs synthesized with leaf extract as a biogenic SA in the tunability of Q-switched lasers, employing two distinct fabrication techniques for the SA.
Loop corrections in the separate universe picture
Authors: Iacconi Laura , Mulryne David , Seery David 
Published: June 2024

Abstract
In inflationary models that produce a spike of power on short scales, back-reaction of
small-scale substructure onto large-scale modes is enhanced. Loop corrections that quantify this
back-reaction have been evaluated by a number of authors. We argue that the separate universe
framework provides a highly convenient tool for such computations. Each loop of interest is
characterized by large hierarchies in wavenumber and horizon exit time. The separate universe
framework highlights important factorizations involving these hierarchies. We interpret each loop
correction in terms of a simple, classical, back-reaction model, and clarify the meaning of the
different volume scalings that have been reported in the literature. We argue that significant
back-reaction requires both short-scale nonlinearities and long-short couplings that
modulate the short-scale power spectrum. In the absence of long-short couplings, only incoherent
“shot noise”-like effects are present, which are volume-suppressed. Dropping the shot noise,
back-reaction from a particular scale is controlled by a product of f
NL-like parameters: an
equilateral configuration measuring the nonlinearity of the short-scale modes, and a squeezed
configuration measuring the long-short coupling. These may carry important scale dependence
controlling the behaviour of the loop in the decoupling limit where the hierarchy of scales
becomes large. In single-field models the long-short coupling may be controlled by this
hierarchy, in which case the net back-reaction would be safely suppressed. We illustrate our
framework using explicit computations in a 3-phase ultra-slow-roll scenario. Our analysis differs
from earlier treatments of this model, which did not consistently include the effect of
small-scale modes. Finally, we discuss different choices for the smoothing scale used in the
separate universe framework and argue the effect can be absorbed into a renormalization of local
operators. This complicates interpretation of the loop, because the analytic part of each loop
integral is degenerate with unknown, ultraviolet-sensitive contributions.
Stochastic gravitational wave background: birth from string-wall death
Authors: Ge Shuailiang 
Published: June 2024

AbstractWe study a new source of stochastic gravitational wave background (SGWB) from the final collapse of a network of topological defects. Typically, the final collapse is considered negligible for generating gravitational waves (GWs) due to its subdominance compared with the network's long-term evolution in the scaling regime. However, in some cases, a network can be driven outside of horizon by inflation and later re-enter horizon. Then, the network's final collapse after re-entering horizon becomes the dominant GW source and therefore cannot be neglected. We demonstrate this phenomenon in the context ofNDW= 1 string-wall networks which naturally arise in axion models, although the framework can be generalized to other types of topological networks. The final collapse of walls bounded by strings releases GWs. Our calculation of the corresponding GW spectrum suggests it could be related to the first few bins of the nano-Hertz SGWB signal possibly detected by various Pulsar Timing Array (PTA) collaborations. However, it is important to note that such GW spectrum falls within a relatively narrow frequency range, which may not completely account for the PTA signal that spans more than one order of magnitude in frequency. Furthermore, with different parameter choices, the resultant GWs generated in this mechanism could be probed by various GW interferometry experiments.
Radial stability of spherical bosonic stars and critical points
Authors: Santos Nuno M. , Benone Carolina L. , Herdeiro Carlos A.R. 
Published: June 2024

Abstract
We study radial perturbations of spherically symmetric spin-0 and spin-1 bosonic stars, computing numerically the squared frequency of the fundamental mode. We find that not all critical points — where the Arnowitt-Deser-Misner mass attains an extremum — correspond to zero modes. Thus, radial stability does not always change at such critical points. The results are in agreement with the so-called critical point method.
Peculiarities of the intrinsic symmetry of linear and nonlinear optical susceptibility tensors in nonabsorbing inhomogeneous media with nonlocality of optical response
Authors: Ryzhikov P S , Makarov V A 
Published: June 2024

Abstract
We show that using the Landau–Lifshitz form of the constitutive equations to construct electrodynamics of inhomogeneous nonabsorbing media with nonlocality of optical response leads to previously unknown intrinsic symmetry relations of the spatially dependent tensors of local and nonlocal optical susceptibilities guaranteeing that the energy conservation law is fulfilled. The discovered relations drastically differ from the analogous relations for homogeneous spatially dispersive media and make it possible to correctly write down the balance equation for the energy conservation law in inhomogeneous media with nonlocality of optical response without the previously accepted artificial addition of any new terms to the classical constitutive equations suggested by Landau and Lifshitz.
Pulsating dynamics of noise-like pulses in a fiber laser with nonlinear optical loop mirror
Authors: Wang Xude , Li Kaixin , Lu Mengxiang , Fan Yuhan , Fu Mingzhu , Xu Aijia , Li Suwen 
Published: June 2024

Abstract
We experimentally investigate the nature of pulsating noise-like pulses (NLPs) in a fiber laser based on the nonlinear optical loop mirror. By adjusting the intra-cavity polarization, three types of pulsating NLPs can be obtained in the cavity. By utilizing the dispersive Fourier transformation technique, the real-time evolution dynamics of NLP pulsation have been investigated in detail. Different from the conventional pulsating behavior, the NLPs undergo remarkable and periodical variations in their width with slight changes in pulse peak powers during pulsation process. We speculate that the wavelength-dependent gain saturation is involved in the pulsating NLP evolution. Quasi-periodic energy oscillations are associated with cyclic generation and subsequent walkoff of wavelength-shifted components, resulting in the different pulsating dynamics of NLP. Moreover, during pulsation process, the NLP splitting could happen with the increasing of energy. All these findings will help to complement our understanding of NLP pulsation in a fiber laser.
Average coherence and average correlated coherence as indicators of quantum phase transitions in the XY model with staggered Dzyaloshinskii-Moriya interaction
Authors: Li Gan-Lu , Xie Yu-Xia 
Published: June 2024

Abstract
The performance of average coherence (AC) and average correlated coherence (ACC) in detecting quantum phase transitions (QPTs) has been explored by considering the XY model with staggered Dzyaloshinskii-Moriya interaction. By using the quantum renormalization group method, it is shown that the ground-state AC and ACC show either a maximum or a minimum at the QPT point. Moreover, the AC and ACC susceptibilities (i.e. their derivatives with respect to the driving parameter) have two extreme points near the two sides of the QPT point. A finite-scaling analysis reveals that these extreme points tend to the QPT point after several iterations of the renormalization and the susceptibilities at the QPT point become divergent in the thermodynamic limit.
Generating Baikal-GVD high energy cascade-like neutrino events with a GEANT4-based simulation toolkit*
Authors: Wang 王 Zike 子珂 , Avrorin A.D. , Cao 曹 Zhen 臻 , Chen 陈 Mingjun 明君 , Chu 褚 Peiyuan 培元 , Dzhilkibaev Zh.-A.M. , Gao 高 Bo 博 , Huang 黄 Tianqi 天奇 , Liu 刘 Jiali 加丽 , Qi 齐 Ying 莹 , You 游 Xiaohao 晓浩 , Zaborov D.N. 
Published: June 2024

Abstract
Using the GEANT4 and Cosmic Ray Monte Carlo (CRMC) software packages, we developed a new simulation toolkit for astrophysical neutrino telescopes. By configuring the Baikal-GVD detector and comparing the vertex position and direction of incident particles, as well as the channel-by-channel signals, to the events detected by Baikal-GVD, we successfully generated 13 high-energy cascade neutrino events with the toolkit. Our analysis revealed a systematic offset between the reconstructed shower position and the true interaction position, with a distance close to the scale of the shower maximum of −0.54±1.29 m. We achieved a good linear relationship between the photoelectron number of neutrino events obtained by simulation and the real data measured by Baikal-GVD. The simulation toolkit could serve as a reliable basis for studying the performance of astrophysical neutrino telescopes.
Exploring the impact of anti-shadowing effect on unintegrated gluon distributions in the MD-BFKL equation*
Authors: Wang 王 Xiaopeng 晓鹏 , Cai 蔡 Yanbing 燕兵 , Chen 陈 Xurong 旭荣 
Published: June 2024

Abstract
This paper presents a comprehensive analysis of the MD-BFKL equation, considering both shadowing and anti-shadowing effects in gluon recombination processes. By deriving analytical expressions for unintegrated gluon distributions through the solution of the MD-BFKL equation, with and without the incorporation of the anti-shadowing effect, we offer new insights into the influence of these effects on the behavior of unintegrated gluon distributions. Our results, when compared to those from the CT18NLO gluon distribution function, demonstrate that the anti-shadowing effect has a notably stronger impact on the characteristics of unintegrated gluon distributions, particularly in regions of high rapidity and momentum. This work significantly contributes to the understanding of gluon recombination mechanisms and their implications in high energy physics.
Brain-implantable needle-type CMOS imaging device enables multi-layer dissection of seizure calcium dynamics in the hippocampus
Authors: Olorocisimo Joshua Philippe , Ohta Yasumi , Regonia Paul R , Castillo Virgil C G , Yoshimoto Junichiro , Takehara Hironari , Sasagawa Kiyotaka , Ohta Jun 
Published: June 2024

Abstract

Objective: Current neuronal imaging methods mostly use bulky lenses that either impede animal behavior or prohibit multi-depth imaging. To overcome these limitations, we developed a lightweight lensless biophotonic system for neuronal imaging, enabling compact and simultaneous visualization of multiple brain layers. Approach: Our developed ‘CIS-NAIST’ device integrates a micro-CMOS image sensor, thin-film fluorescence filter, micro-LEDs, and a needle-shaped flexible printed circuit. With this device, we monitored neuronal calcium dynamics during seizures across the different layers of the hippocampus and employed machine learning techniques for seizure classification and prediction. Main results: The CIS-NAIST device revealed distinct calcium activity patterns across the CA1, molecular interlayer, and dentate gyrus. Our findings indicated an elevated calcium amplitude activity specifically in the dentate gyrus compared to other layers. Then, leveraging the multi-layer data obtained from the device, we successfully classified seizure calcium activity and predicted seizure behavior using Long Short-Term Memory and Hidden Markov models. Significance: Taken together, our ‘CIS-NAIST’ device offers an effective and minimally invasive method of seizure monitoring that can help elucidate the mechanisms of temporal lobe epilepsy.
Random matrix statistics and safety rest areas on interstates in the United States
Authors: Cai J , Peca-Medlin J , Wan Y 
Published: June 2024

Abstract
We analyze physical spacings between locations of safety rest areas on interstates in the United States. We show normalized safety rest area spacings on major interstates exhibit Wigner surmise (WS) statistics, which align with the eigenvalue spacings for the Gaussian unitary ensemble from random matrix theory as well as the one-dimensional gas interactions via the Coulomb potential. We identify economic and geographic regional traits at the state level that exhibit Poissonian statistics, which become more pronounced with increased geographical obstacles in interstate travel. Other regional filters (e.g. historical or political) produced results that did not diverge substantially from the overall WS model.
Tracer dynamics in the active random average process
Authors: Santra Saikat , Singh Prashant , Kundu Anupam 
Published: June 2024

Abstract
We investigate the dynamics of tracer particles in the random average process (RAP), a single-file system in one dimension. In addition to the position, every particle possesses an internal spin variable

σ
(
t
)

that can alternate between two values, ±1, at a constant rate γ. Physically, the value of

σ
(
t
)

dictates the direction of motion of the corresponding particle and, for finite γ, every particle performs non-Markovian active dynamics. Herein, we study the effect of this non-Markovian behavior in the fluctuations and correlations of the positions of tracer particles. We analytically show that the variance of the position of a tagged particle grows sub-diffusively as

∼

ζ

q

t

at large times for the quenched uniform initial conditions. While this sub-diffusive growth is identical to that of the Markovian/non-persistent RAP, the coefficient

ζ

q

is rather different and bears the signature of the persistent motion of active particles through higher-point correlations (unlike in the Markovian case). Similarly, for the annealed (steady-state) initial conditions, we find that the variance scales as

∼

ζ

a

t

at large times, with the coefficient

ζ

a

once again different from the non-persistent case. Although both ζ
q and

ζ

a

individually depart from their Markovian counterparts, their ratio

ζ

a

/

ζ

q

is still equal to

2

, a condition observed for other diffusive single-file systems. This condition turns out to be true even in the strongly active regimes, as corroborated by extensive simulations and calculations. Finally, we study the correlation between the positions of two tagged particles in both quenched uniform and annealed initial conditions. We verify all our analytical results using extensive numerical simulations.
Nonequilibrium formulation of varying-temperature bit erasure
Authors: Whitelam Stephen 
Published: June 2024

Abstract
Landauer’s principle states that erasing a bit of information at fixed temperature T costs at least

k

B

T
ln
⁡
2

units of work. Here we investigate erasure at varying temperature, to which Landauer’s result does not apply. We formulate bit erasure as a stochastic nonequilibrium process involving a compression of configuration space, with physical and logical states associated in a symmetric way. Erasure starts and ends at temperature T, but temperature can otherwise vary with time in an arbitrary way. Defined in this way, erasure is governed by a set of nonequilibrium fluctuation relations that show that varying-temperature erasure can done with less work than

k

B

T
ln
⁡
2

. As a result, erasure and the complementary process of bit randomization can be combined to form a work-producing engine cycle.