bluuebunny/crossref_metadata_2025_split huggingface dataset:
A randomized measurement toolbox for an interacting Rydberg-atom quantum simulator
Authors: Notarnicola Simone , Elben Andreas , Lahaye Thierry , Browaeys Antoine , Montangero Simone , Vermersch Benoît 
Published: September 2023

AbstractWe present a toolbox to probe quantum many-body states implemented on Rydberg-atoms quantum hardware via randomized measurements. We illustrate the efficacy of this measurement toolbox in the context of probing entanglement, via the estimation of the purity, and of verifying a ground-state preparation using measurements of the Hamiltonian variance. To achieve this goal, we develop and discuss in detail a protocol to realize independent, local unitary rotations. We benchmark the protocol by investigating the ground state of the one-dimensional Su–Schrieffer–Heeger model, recently realized on a chain of Rydberg atom, and the state resulting after a sudden quench in a staggeredXYchain. We probe the robustness of our toolbox by taking into account experimental imperfections, such as pulse fluctuations and measurement errors.
Using dark solitons from a Bose–Einstein condensate necklace to imprint soliton states in the spectral memory of a free boson gas
Authors: Dikandé Alain Moïse 
Published: September 2023

Abstract
A possible use of matter-wave dark-soliton crystal produced by a Bose–Einstein condensate (BEC) with ring geometry, to store soliton states in the quantum memory of a free boson gas, is explored. A self-defocusing nonlinearity combined with dispersion and the finite size of the BEC, favor the creation of dark-soliton crystals that imprint quantum states with Jacobi elliptic-type soliton wavefunctions in the spectrum of the free boson gas. The problem is formulated by considering the Gross–Pitaevskii equation with a positive scattering length, coupled to a linear Schrödinger equation for the free boson gas. With the help of the matter-wave dark soliton-crystal solution, the spectrum of bound states created in the free boson gas is shown to be determined by the Lamé eigenvalue problem. This spectrum consists of

quantum states whose wave functions and energy eigenvalues can be unambiguously identified. Among these eigenstates some have their wave functions that are replicas of the generating dark soliton crystal.
Inverse design of sub-diffraction focusing metalens by adjoint-based topology optimization
Authors: Dong Lianhong , Kong Weijie , Wang Changtao , Luo Guoyu , Pu Mingbo , Ma Xiaoliang , Li Xiong , Luo Xiangang 
Published: September 2023

Abstract
Breaking the diffraction limit to realize imaging at the nanoscale is challenging in scientific research. Traditional sub-diffraction focusing metalens is obtained by arranging artificially selected unit cells, of which the design process is passive and complex. This paper brings up an inverse design idea of planar sub-diffraction focusing metalens based on super-oscillatory theory to solve these problems, starting from a desired focusing performance. The sub-diffraction focusing metalens is then obtained by iterative topology optimization with different initial structures. We introduce the adjoint-based topology inverse optimization into the structural design of sub-diffraction focusing metalens, which provides another way to design a sub-diffraction metalens for far-field unmarked super-resolution imaging. Based on this idea, we achieve a sub-diffraction focusing characterized by a focal radius of 0.75 times the Rayleigh diffraction limit, optimizing from a diffraction-limited focusing metalens. Moreover, focal radii between 0.63 and 0.73 times the Rayleigh diffraction limit are achieved by optimizing 11 sets of random initial metasurface structures with even no focusing performance. The results indicate that our method is independent of the initial structure distribution, which can be extended to the inverse design of other functional metasurfaces in imaging, lithography, and other fields.
Zero-admittance states in honeycomb topological circuits
Authors: Huang Jinke , Guo Shengqun , Qiu Shiqi , Li Bangyu , Xu Lei , Zhuang Fengjiang , Su Shaojian , Lin Zhili , Huang Ruimin , Qiu Weibin 
Published: September 2023

Abstract
Topological circuits play an important role in exploring high-order topological insulators. In this work, we demonstrate that defects in the bulk without changing the parameters can increase zero-admittance states. Furthermore, the coupling parameters affect the distribution of the zero-admittance states are demonstrated. The impedance is measured to verify the existence of these states. The experimental results agree well with the theoretical results, both showing the strong resonance peak, as well as the impedance distribution of different parameters is mainly concentrated at the 2π/3 corner, 2π/6 corner, or edge. Our work paves the way for the research and experimentation of honeycomb topological circuits.
General validity of the second fluctuation-dissipation theorem in the nonequilibrium steady state: Theory and applications
Authors: Zhu Yuanran , Lei Huan , Kim Changho 
Published: September 2023

Abstract
In this paper, we derive a generalized second fluctuation-dissipation theorem (FDT) for stochastic dynamical systems in the steady state and further show that if the system is highly degenerate, then the classical second FDT is valid even when the exact form of the steady state distribution is unknown. The established theory is built upon the Mori-type generalized Langevin equation for stochastic dynamical systems and hence generally applies to nonequilibrium systems driven by stochastic forces. These theoretical results enable us to construct a data-driven nanoscale fluctuating heat conduction model based on the second FDT. We numerically verify that our heat transfer model yields better predictions than the Green-Kubo formula for systems far from the equilibrium.
An analytical drain current modelling of DMGC CGAA FET: A circuit level implementation
Authors: Mudidhe Praveen Kumar , Nistala Bheema Rao 
Published: September 2023

Abstract
The GAA FET has emerged as a promising device due to its excellent control over short-channel effects and improved electrostatic control. This manuscript presents the analytical modelling for the Dual Material Graded Channel (DMGC) Cylindrical GAA FET to characterize the drain current in linear, saturation, as well as subthreshold regions. The model incorporates the effect of supply voltage, radius, and thickness of oxide layer on the device enabling a comprehensive analysis of the device behaviour. The influence of subthreshold swing is also presented. Next, the analysis is extended to investigate the important analog performance parameters that includes transconductance and output conductance. The validation of the analytical model across a wide range of operating conditions with the simulated data is performed and observed to be a close match. Building upon the insights gained from the analytical modelling, a common source amplifier based on the DMGC CGAA FET is designed. The amplifier’s performance has been optimized by carefully selecting the biasing conditions and a maximum gain value of 7.745 is achieved. Further, an improvement of 42.28% in output voltage is observed for DMGC in comparison with SMGC making it a promising device for high-performance integrated circuit design.
Dynamics of a fractional order locally-active Memristor with applications in oscillatory systems*
Authors: Oresanya Babajide Oluwatosin , Si Gangquan , Xu Xiang , Gong Jiahui , Guo Zhang 
Published: September 2023

Abstract
A non-volatile fractional-order Memristor, with two asymptotically stable equilibrium points and locally-active characteristic is presented. A fractional-order small-signal equivalent circuit is used to describe the memristor’s characteristics at an operating point within a locally-active region. Via the equivalent circuit, the memristor is shown to possess an edge of chaos within a voltage range; when connected in series with an inductor, it generates periodic oscillation about the locally-active operating point in the edge of chaos. The oscillating frequency and the external inductance are determined by the small-signal circuit’s admittance. Adding external capacitors and inductors in series/parallel with the memristor, three- and four-dimensional circuits are realized which generates chaotic oscillations. Analysis of the resulting three- and four-dimensional circuits are carried out at the memristor’s equilibrium point, the effects of the memristor’s parameters and the fractional order indexes of the added components on the system dynamics are also investigated using Lyapunov and bifurcation analysis. Numerical simulations show the versatility of the memristor for usages in oscillatory systems.
Development of an outer-off-midplane lower hybrid wave launcher for improved core absorption in non-inductive plasma start-up on TST-2
Authors: Ko Y. , Tsujii N. , Ejiri A. , Watanabe O. , Jang S. , Shinohara K. , Iwasaki K. , Peng Y. , Lin Y. , Shirasawa Y. , Hidano T. , Adachi F. , Tian Y. 
Published: September 2023

Abstract
A new outer-off-midplane lower hybrid (LH) wave launcher was developed for improved core absorption in the TST-2 spherical tokamak. In the previously developed outer-midplane and top launch scenarios, plasma current was driven only very near the plasma edge (

r

/

a
>
0.7

), resulting in limited driven current density. Strong thick-target x-ray radiation has also been observed for the top launch scenario, which indicated LH wave driven fast electron losses. The outer-off-midplane launch scenario was designed to drive current at the core (

r

/

a
∼
0.5

) at low phase velocity to suppress production of unnecessarily high energy electrons. In the non-inductive plasma start-up experiment with the new outer-off-midplane launch scenario, improved core electron heating was confirmed by the Thomson scattering diagnostic that showed the electron temperature was about twice as high as the previous two scenarios. Reduction of the LH wave driven fast electron losses was confirmed by the measured x-ray radiation intensity that was substantially lower than the top launch scenario. It was also easier to maintain the optimum level of the electron density compared to the outer-midplane launch scenario that indicated the undesired LH wave interactions with the scrape-off-layer plasma may have been reduced due to strong core absorption.
Edge radiated temperature fluctuations across confinement regime transitions in favorable and unfavorable drift configurations at ASDEX Upgrade
Authors: Bielajew R. , Plank U. , Conway G.D. , Hubbard A.E. , Rodriguez-Fernandez P. , Vanovac B. , Yoo C. , White A.E. ,   the ASDEX Upgrade Team
Published: September 2023

Abstract
The physics behind the difference in heating power threshold for the low to high confinement (L–H) transition between favorable ion

B
×
∇
B

drift (toward active X-point) and unfavorable ion

B
×
∇
B

drift (away from active X-point) magnetic configurations is a longstanding open question. In this work we show differences in edge (

ρ

p
o
l

=
0.95

–1.0) turbulence in matched heating power favorable and unfavorable magnetic configuration discharges using a correlation electron cyclotron emission diagnostic to measure radiated temperature (

T

r
a
d

) fluctuations. During power matched L-mode phases, the edge

T

r
a
d

fluctuations have higher amplitude in the unfavorable configuration plasma as compared to the favorable configuration plasma. The lower fluctuation amplitude in favorable configuration is observed concomitant with increased E × B shear, as compared to the unfavorable case. Although this turbulence is different in amplitude, it is similar in radial and frequency structure between favorable and unfavorable configurations and grows to the weakly coherent mode during the I-mode phase of the unfavorable configuration discharge. A broadband pedestal fluctuation is seen during an inter-ELM H-mode period of the favorable configuration discharge.
Spectroscopy at LHCb: experimental overview
Authors: Capriotti Lorenzo ,   LHCb collaboration
Published: September 2023

Abstract
The large dataset collected in proton-proton collisions at the LHC allows precision studies and discovery of new states in the field of conventional and exotic heavy-hadron spectroscopy; both are crucial to understand QCD dynamics and binding rules. This is possible due to high luminosity, high b/c-hadron production cross-section and the unique, dedicated design of the LHCb detector, optimised to reconstruct b/c-hadron decays. The latest results on conventional and exotic spectroscopy from LHCb are presented.
The
P¯
ANDA experiment at FAIR
Authors: Johansson Tord ,   PANDA Collaboration
Published: September 2023

Abstract
The Facility for Antiproton and Ion Research, FAIR, is presently under construction near Darmstadt, Germany. Among other large-scale installations, the

P
¯

ANDA (Antiproton annihilations in Darmstadt) experiment is designed to address pertinent questions of the strong interaction in the non-perturbative region. At

P
¯

ANDA, an antiproton beam, with momenta between 1.5 GeV/c and 15 GeV/c, circulating in the high-energy storage ring HESR will interact with internal targets. High interaction rates and unprecedented momentum resolusion will allow for a high discovery potential and precision experiments. The detector system of

P
¯

ANDA is optimised to meet the challenges of high-resolution hadron spectroscopy in formation and production with very good background suppression. At the same time, it meets the requirements of other parts of the physics program such as hyperon and hadron structure physics. The detector is reviewed and physics goals are presented.
Constraining the Sea Quark Distributions Through W Cross-Section Ratios Measured in pp Collisions at STAR
Authors: Posik M. ,   STAR Collaboration
Published: September 2023

Abstract
Although the precision to which we know the unpolarized parton distribution functions (PDFs) of the nucleon has improved over the years, there remain kinematic regions where more data are needed to constrain PDFs, such as the ratio of the sea quark distributions

d
¯

/

u
¯

near the valence region. Furthermore, different measurements appear to suggest different high-x behaviors of this ratio. The W cross-section ratio (W+/W
−) in pp collisions is sensitive to the unpolarized sea quark distributions at large Q
2, set by the W mass, and can be used to help constrain the

d
¯

/

u
¯

ratio. The STAR experiment at RHIC is well equipped to measure the leptonic decays of W bosons produced in pp collisions at center of mass energies of 500 and 510 GeV. These proceedings present recent W cross-section ratio results measured by STAR, including preliminary results from data collected in 2017, which double the statistics when combined with the published results based on data samples recorded in 2011-2013.
Multiplicity-dependent strangeness enhancement in small systems at LHCb
Authors: Shangase Desmond M. ,   LHCb Collaboration
Published: September 2023

Abstract
The phenomenon of strangeness enhancement, originally proposed as a signature of quark-gluon plasma formation[1, 2], has received considerable new interest following recent observations in small collision systems[3]. LHCb is uniquely well suited to study such effects in the heavy quark sector and in the forward region. One such advantage is the ability to measure event activity using estimators that are geometrically inclusive and geometrically distinct from the signal region, thus providing insight into local particle density dependencies. Here we present results on multiplicity-dependent

B
s
0

to B
0 cross-section ratios in pp collisions at

s

=
13

TeV[4]. The ratio is measured to increase with local particle density for low

B

(
s
)

0

momenta (
PT
< 6 GeV/c).
Advances on clusters and correlations in nuclear structure and reactions
Authors: Fortunato L. , Casal J. , Horiuchi W. , Lanza E.G. , Singh G. , Singh Jagjit , Vitturi A. 
Published: September 2023

Abstract
Recent advances obtained in the last few years by the Theoretical Nuclear Physics group in Padova with various collaborators on alpha-cluster models and on nuclear correlations in stable and unstable light nuclei are reviewed in this contribution. The algebraic cluster model assumes triangular and tetrahedral arrangement of α particles for 12C and 16O respectively. The description of the low-lying states achieved in this model, that is a consequence of the requirement of discrete symmetries, is extremely good. We have made several calculations of α-transfer form factors and reaction cross-sections obtaining a good agreement with available data, thus corroborating the main hypotheses of the model [1]. We have speculated about smoking-gun nuclear fluorescence experiment that might shed light on the exact spatial arrangement of alpha particles in 12C [2]. We will also talk about the successful predictions on the positioning of 29F on the southern shore of the island of inversion [3] and on recent calculations on its halo character and dipole response [4, 5]. Extension of these calculations to 31F [6], pointing out the presence of a halo, are also discussed.
Level structure and transition multipolarities of 54Mn
Authors: Avaa A.A. , Kibédi T. , Jones P. , Stuchbery A.E. , Usman I.T. , Chisapi M.V. , Dowie J.T.H. , Wiedeking M. 
Published: September 2023

Abstract
Excited states up to 3 MeV in the odd-odd 54Mn have been populated in the 54Cr(p,n)54Mn reaction at Ep
= 4.5 MeV. Conversion coefficients (αK
and απ
) were deduced using the NPG method for the first time in 54Mn. Multipolarities were unambiguously assigned in 16 transitions for the first time using the obtained conversion coefficient values. Spin and parity has been restricted for three transitions.
Revisiting the 4He(4He,4He)4He* inelastic scattering at the MAGNEX facility
Authors: Soukeras V , Cappuzzello F , Agodi C , Becker H-W , Brischetto G A , Calabrese S , Carbone D , Cavallaro M , Chamon L C , Ciampi C , Cicerchia M , Cinausero M , Ciraldo I , D’Andrea M , Dell’Aquila D , Firat S , Frosin C , Fisichella M , Hacisalihoglu A , Hilcker M , Karakoc M , Kucuk Y , Fauci L La , Lombardo I , Marchi T , Sgouros O , Spatafora A , Torresi D , Vigilante M , Vitturi A , Yildirim A 
Published: September 2023

Abstract
The 4He(4He,4He)4He* inelastic scattering was investigated at the MAGNEX facility of INFN - LNS, aiming at shedding light on the characteristics of the isoscalar monopole resonance of 4He which lies at an energy slightly higher than the proton emission threshold and slightly lower than the neutron emission threshold. A complementary elastic scattering measurement was also performed to study the initial state interaction and set accurate coupled channel calculations. Here, the experimental setup, the data reduction and the theoretical interpretation strategy are briefly described.
The AGATA Spectrometer
Authors: Simpson J. , Boston A. J. , Holloway F. , Bentley M. A. , Chen S. D. 
Published: September 2023

Abstract
The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate a high-resolution gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. The tracking technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. AGATA can measure gamma rays from 10’s of keV to 10 MeV with excellent efficiency and position resolution and has a very high count rate capability. The realisation of AGATA and gamma-ray tracking is a result of many technical advances. AGATA has operated in a series of successful scientific campaigns at Legnaro National Laboratory in Italy, GSI in Germany and GANIL in France. AGATA is now in its next phase of development as it evolves to the full 4π instrument. It is presently starting its next campaign at Legnaro.
Investigating the intruder states of 83Se via lifetime measurements
Authors: Pellumaj J. , Gottardo A. , Goasduff A. , Bazzacco D. , Brugnara D. , Bottoni S. , Capra S. , de Angelis G. , Gozzelino A. , Ha J. , Lenzi S.M. , Marchi T. , Menegazzo R. , Mengoni D. , Nannini A. , Napoli D.R. , Pérez-Vidal R.M. , Pigliapoco S. , Recchia F. , Rezynkina K. , Valiente-Dobón J.J. , Zanon I. , Ziliani S. , Zhang G. , Carturan S. , Loriggiola M. 
Published: September 2023

Abstract
Quadrupole interaction involving protons and neutrons drives the nucleus into deformed configurations at low excitation energies. Intruder states appear in N=49 isotones, reaching a minimum at around 500 keV in 83Se. Since 83Se is in the mid of the proton shell (Z=28-40), it is a good candidate to study the properties of particle-hole intruder states lowered in energy by large quadrupole correlations. Moreover, it will also allow one to estimate the degree of N=50 core breaking in the ground state of Se isotopes. The lifetime of the 540-keV 1/2+ state and 1100-keV 3/2+ state of 83Se were measured using the Recoil Distance Method and the Doppler Shift Attenuation Method respectively. A beam of 82Se, with intensity 0.02 pnA, accelerated to 270 MeV from the Tandem accelerator at LNL-INFN, was sent into a deuterated polyethylene foil (C2D4), evaporated on a 6 mg/cm2 gold layer. The GALILEO γ-array was coupled to the SPIDER silicon array, allowing one to obtain the needed channel selectivity through particle-γ coincidence measurements.
Spectroscopic Analysis of the Energy-Level Structure in Rhenium-190
Authors: Griffiths M.R. , Wheldon C. , Kokalova Tz. , Hertenberger R. , Faestermann Th. , Wirth H.-F. , Gernhäuser R. , Krücken R. , Ashwood N.I. , Barr M. , Freer M. , Malcolm J.D. , Pirrie S. , Turner A. , Ziman V. 
Published: September 2023

Abstract
Investigations of neutron-rich nuclei, particularly those that lie in regions of the nuclear chart known for a high probability of isomeric states forming, are of vital importance to the understanding of nuclear astrophysical processes. Studies of these nuclei, such as 190Re, can be used to validate and improve theoretical models of such processes. A polarised-beam experiment has been performed using the Munich Q3D magnetic spectrograph in order to investigate the energy-level structure of 190Re. An excitation-energy spectrum has been produced, allowing for energies to be assigned to observed states. Through comparison between measured and calculated differential cross-sections and vector analysing powers, the process of assigning spin and parity to newly observed states, and confirming the assignments for previously observed states, is underway.
Ab initio investigations of A=8 nuclei: α–α scattering, deformation in 8He, radiative capture of protons on 7Be and 7Li and the X17 boson
Authors: Navrátil P. , Kravvaris K. , Gysbers P. , Hebborn C. , Hupin G. , Quaglioni S. 
Published: September 2023

Abstract
We apply the No-Core Shell Model with Continuum (NCSMC) that is capable of describing both bound and unbound states in light nuclei in a unified way with chiral two- and three-nucleon interactions as the only input. The NCSMC can predict structure and dynamics of light nuclei and, by comparing to available experimental data, test the quality of chiral nuclear forces. We discuss applications of NCSMC to the α–α scattering and the structure of 8Be, the p+7Be and p+7Li radiative capture and the production of the hypothetical X17 boson claimed in ATOMKI experiments. The 7Be(p, γ)8B reaction plays a role in Solar nucleosynthesis and Solar neutrino physics and has been subject of numerous experimental investigations. We also highlight our investigation of the neutron rich exotic 8He that has been recently studied experimentally at TRIUMF with an unexpected deformation reported.