cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detecting Dysfluencies in Stuttering Therapy Using wav2vec 2.0
Creators: name: Bayerl, Sebastian P.
name: Wagner, Dominik
name: Nöth, Elmar
name: Riedhammer, Korbinian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computation and Language (cs.CL)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Stuttering is a varied speech disorder that harms an individual's communication ability. Persons who stutter (PWS) often use speech therapy to cope with their condition. Improving speech recognition systems for people with such non-typical speech or tracking the effectiveness of speech therapy would require systems that can detect dysfluencies while at the same time being able to detect speech techniques acquired in therapy. This paper shows that fine-tuning wav2vec 2.0 [1] for the classification of stuttering on a sizeable English corpus containing stuttered speech, in conjunction with multi-task learning, boosts the effectiveness of the general-purpose wav2vec 2.0 features for detecting stuttering in speech; both within and across languages. We evaluate our method on FluencyBank , [2] and the German therapy-centric Kassel State of Fluency (KSoF) [3] dataset by training Support Vector Machine classifiers using features extracted from the finetuned models for six different stuttering-related event types: blocks, prolongations, sound repetitions, word repetitions, interjections, and - specific to therapy - speech modifications. Using embeddings from the fine-tuned models leads to relative classification performance gains up to 27% w.r.t. F1-score.
description: Accepted at Interspeech 2022
Study of dielectric breakdown in liquid xenon with the XeBrA experiment
Creators: name: Watson, J.
name: Olcina, I.
name: Soria, J.
name: McKinsey, D. N.
name: Kravitz, S.
name: Deck, E. E.
name: Bernard, E. P.
name: Tvrznikova, L.
name: Waldron, W. L.
name: Riffard, Q.
name: O'Sullivan, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Maintaining the electric fields necessary for the current generation of noble liquid time projection chambers (TPCs), with drift lengths exceeding one meter, requires a large negative voltage applied to their cathode. Delivering such high voltage is associated with an elevated risk of electrostatic discharge and electroluminescence, which would be detrimental to the performance of the experiment. The Xenon Breakdown Apparatus (XeBrA) is a five-liter, high voltage test chamber built to investigate the contributing factors to electrical breakdown in noble liquids. In this work, we present the main findings after conducting scans over stressed electrode areas, surface finish, pressure, and high voltage ramp speed in the medium of liquid xenon. Area scaling and surface finish were observed to be the dominant factors affecting breakdown, whereas no significant changes were observed with varying pressure or ramp speed. A general rise in both anode current and photon rate was observed in the last 30 seconds leading up to a breakdown, with a marked increase in the last couple of seconds. In addition, the position of breakdowns was reconstructed with a system of high-speed cameras and a moderate correlation with the Fowler-Nordheim field emission model was found. Tentative evidence for bubble nucleation being the originating mechanism of breakdown in the liquid was also observed. We deem the results presented in this work to be of particular interest for the design of future, large TPCs, and practical recommendations are provided.
description: 18 pages, 16 figures; A typo in the author list was corrected; Corrections to the body text were made and supplementary material was added
Anomalous spontaneous emission dynamics at chiral exceptional points
Creators: name: Lu, Yuwei
name: Zhao, Yanhui
name: Li, Runhua
name: Liu, Jingfeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An open quantum system operated at the spectral singularities where dimensionality reduces, known as exceptional points (EPs), demonstrates distinguishing behavior from the Hermitian counterpart. Here, we present an analytical description of local density of states (LDOS) for microcavity featuring chiral EPs, and unveil the anomalous spontaneous emission dynamics from a quantum emitter (QE) due to the non-Lorentzian response of EPs. Specifically, we reveal that a square Lorentzian term of LDOS contributed by chiral EPs can destructively interfere with the linear Lorentzian profile, resulting in the null Purcell enhancement to a QE with special transition frequency, which we call {\it{EP induced transparency}}. While for the case of constructive interference, the square Lorentzian term can narrow the linewidth of Rabi splitting even below that of bare components, and thus significantly suppresses the decay of Rabi oscillation. Interestingly, we further find that an open microcavity with chiral EPs supports atom-photon bound states for population trapping and decay suppression in long-time dynamics. As applications, we demonstrate the advantages of microcavity operated at chiral EPs in achieving high-fidelity entanglement generation and high-efficiency single-photon generation. Our work unveils the exotic cavity quantum electrodynamics unique to chiral EPs, which opens the door for controlling light-matter interaction at the quantum level through non-Hermiticity, and holds great potential in building high-performance quantum-optics devices.
description: 14 pages, 8 figures
Entropy Stable Discontinuous Galerkin Methods for Balance Laws in Non-Conservative Form: Applications to the Euler Equations with Gravity
Creators: name: Waruszewski, Maciej
name: Kozdon, Jeremy E.
name: Wilcox, Lucas C.
name: Gibson, Thomas H.
name: Giraldo, Francis X.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this work a non-conservative balance law formulation is considered that encompasses the rotating, compressible Euler equations for dry atmospheric flows. We develop a semi-discretely entropy stable discontinuous Galerkin method on curvilinear meshes using a generalization of flux differencing for numerical fluxes in fluctuation form. The method uses the skew-hybridized formulation of the element operators to ensure that, even in the presence of under-integration on curvilinear meshes, the resulting discretization is entropy stable. Several atmospheric flow test cases in one, two, and three dimensions confirm the theoretical entropy stability results as well as show the high-order accuracy and robustness of the method.
description: 31 Pages, 13 figures
The effects of concentrations of ZnO nanoparticles on dewetting suppression of PS thin films
Creators: name: Nampueng PANGPAIBOON
Publisher: name: Metallurgy and Materials Science Research Institute, Chulalongkorn University
Year: 2018
Subjects: Thin film
Surface morphology
Dewetting

description: Journal of Metals, Materials and Minerals, 28, 2, 89-93
Enhanced quantum channel uncertainty relations by skew information
Creators: name: Hu, Xiaoli
name: Hu, Naihong
name: Yu, Bing
name: Jing, Naihuan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By revisiting the mathematical foundation of the uncertainty relation, skew information-based uncertainty sequences are developed for any two quantum channels. A reinforced version of the Cauchy-Schwarz inequality is adopted to improve the uncertainty relation, and a sampling technique of observables' coordinates is used to offset randomness in the inequality. It is shown that the lower bounds of the uncertainty relations are tighter than some previous studies.
Effect of chromium content on the three-body-type abrasive wear behavior of multi-alloyed white cast iron
Creators: name: Mawin SUPRADIST NA AYUDHAYA
Publisher: name: Metallurgy and Materials Science Research Institute, Chulalongkorn University
Year: 2018
Subjects: Multi-alloyed white cast iron
Hardness
Retained austenite
Three-body-type abrasive wear behavior
Cr effect

description: Journal of Metals, Materials and Minerals, 28, 2, 94-105
A study of microcrystalline cellulose prepared from parawood (Hevea brasiliensis) sawdust waste using different acid types
Creators: name: Duangdao AHT-ONG
Publisher: name: Metallurgy and Materials Science Research Institute, Chulalongkorn University
Year: 2018
Subjects: Microcrystalline cellulose
Acid hydrolysis
Characterization
Wood
Waste

description: Journal of Metals, Materials and Minerals, 28, 2, 106-114
Noise suppression in a temporal-multimode quantum memory entangled with a photon via asymmetrical photon-collection channel
Creators: name: Li, Ya
name: Wen, Ya-fei
name: Wang, Min-jie
name: Liu, Chao
name: Liu, Hai-long
name: Li, Shu-jing
name: Xu, Zhong-xiao
name: Wang, Hai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum interfaces (QIs) that generate entanglement between a multimode atomic memory and a photon forms a multiplexed repeater node and hold promise to greatly improve quantum repeater rates. Recently, the temporal multimode spin-wave memory that is entangled with a photon has been demonstrated with cold atoms. However, due to additional noise generated in multimode operation, the fidelity of spin-wave-photon entanglement significantly decreases with the mode number. So far, the improvement on temporal-multimode entanglement fidelity via suppressing the additional noise remains unexplored. Here, we propose and experimentally demonstrate a scheme that can suppress the additional noise of a temporally-multiplexed QI. The scheme uses an asymmetric channel to collect the photons coming and retrieving from the temporally-multiplexed QI. For making comparisons, we also set up a QI that uses symmetric channel for the photon collections. When the QIs store 14 modes, the measured Bell parameter S for the QIs using the asymmetric and the symmetric photon-collection channels are 2.36+/-0.03 and 2.24+/-0.04, respectively, showing that the QI using the asymmetric channel gives rise to a 3% increase in entanglement fidelity, i.e., a 1.7-fold decrease in the additional noise, compared with the QI using the symmetric one. On the other hand, the 14-mode entanglement QIs that use the asymmetric and symmetric collections preserve the violation of a Bell inequality for storage times up to 25 us and 20 us, respectively, showing that the asymmetric QI has a higher entanglement storage performance.
Correlation-Driven Charge Migration as Initial Step in the Dynamics in Correlation Bands
Creators: name: Despré, Victor
name: Kuleff, Alexander I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present dynamics calculations showing how electron-correlation-driven charge migration occurring in the correlation band of ionized molecules can lead to a redistribution of the charge increasing the stability of the system. These calculations offer an interpretation of recent experimental results obtained for adenine. We discuss the implications of the mechanism for the development of attochemistry and how it can be understood in the context of the ultrafast, non-adiabatic relaxation taking place in highly-excited molecular cations.
Recycled poly(ethylene terephthalate)/polypropylene/wollastonite composites using PP-g-MA as compatibilizer: Mechanical, thermal and morphological properties
Creators: name: A. LARPKASEMSUK
Publisher: name: Metallurgy and Materials Science Research Institute, Chulalongkorn University
Year: 2018
Subjects: Recycled PET
Polypropylene
PP-g-MA
Wollastonite
Mechanical properties
Morphology
Thermal behaviors

description: Journal of Metals, Materials and Minerals, 28, 2, 115-123
Conservative Integrators for Vortex Blob Methods
Creators: name: Gormezano, Cem
name: Nave, Jean-Christophe
name: Wan, Andy T. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65L05, 65L12, 65P10, 37M05, 37M15, 70F10, 76M23

description: Conservative symmetric second-order one-step integrators are derived using the Discrete Multiplier Method for a family of vortex-blob models approximating the incompressible Euler's equations on the plane. Conservative properties and second order convergence are proved. A rational function approximation was used to approximate the exponential integral that appears in the Hamiltonian. Numerical experiments are shown to verify the conservative property of these integrators, their second-order accuracy, and as well as the resulting spatial and temporal accuracy of the vortex blob method. Moreover, the derived implicit conservative integrators are shown to be better at preserving conserved quantities than standard higher-order explicit integrators on comparable computation times.
description: 36 pages
Emergence of a Kondo singlet state with the Kondo temperature well beyond 1,000K in the proton-embedded electron gas: Possible route to high-Tc superconductivity
Creators: name: Takada, Yasutami
name: Maezono, Ryo
name: Yoshizawa, Kanako
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Hydrogen in metals has attracted much attention for a long time from both basic scientific and technological points of view. Its electronic state has been investigated in terms of a proton embedded in the electron gas mostly by the local density approximation (LDA) to the density functional theory. At high electronic densities, it is well described by a bare proton H^+ screened by metallic electrons (charge resonance), while at low densities two electrons are localized at the proton site to form a closed-shell negative ion H^- protected from surrounding metallic electrons by the Pauli exclusion principle. However, no details are known about the transition from H^+ to H^- in the intermediate-density region. Here, by accurately determining the ground-state electron distribution n(r) by the combination of LDA and diffusion Monte Carlo simulations with the total electron number up to 170, we obtain a complete picture of the transition, in particular, a sharp transition from short-range H^+ screening charge resonance to long-range Kondo-like spin-singlet resonance, the emergence of which is confirmed by the presence of an anomalous Friedel oscillation characteristic to the Kondo singlet state with the Kondo temperature T_K well beyond 1,000K. This study not only reveals interesting competition between charge and spin resonances, enriching the century-old paradigm of metallic screening to a point charge, but also discovers a long-sought novel high-T_K system, opening an unexpected route to room-temperature superconductivity in a Kondo lattice made of protons.
description: 12 pages, 11 figures
Seasonal Effects on Body Composition, Muscle Characteristics, and Performance of Collegiate Swimmers and Divers
Creators: name: Hirsch, Katie R.
name: Trexler, Eric T.
name: Smith-Ryan, Abbie E.
name: Roelofs, Erica J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Previous researchers have indicated the importance of body composition and muscle quality in athletic performance. However, body composition and muscle-quality measures in swimmers and divers over a training season have yet to be evaluated.
Holography of AdS Hairy Black Holes and Cardy-Verlinde Formula
Creators: name: Astefanesei, Dumitru
name: Choque, David
name: Maggiolo, Jorge
name: Rojas, Raúl
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss some aspects related to holography of Anti-de Sitter (AdS) dyonic hairy black holes, which break the conformal symetry of the boundary. We use counterterms for the scalar field that satisfies mixed boundary conditions to compute the Euclidean action and dual stress tensor. We apply these results to show that the Cardy-Verlinde formula is not satisfied. However, when the magnetic (or electric) charge vanishes, the conformal symmetry is preserved and the entropy of the black hole can be put in the Cardy-Verlinde form. In our analysis, there is no need of adding extra finite counterterms and, in this particular case, we explicitly show that our results match the ones obtained from using the superpotential as a counterterm.
description: 12 pages, 0 figure
Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
Creators: name: Mercenne, Alexis
name: Launey, Kristina D.
name: Dytrych, Tomas
name: Escher, Jutta E.
name: Quaglioni, Sofia
name: Sargsyan, Grigor H.
name: Draayer, Jerry P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) no-core shell-model approach with the resonating group method (RGM) for unified descriptions of nuclear structure and reactions. We obtain ab initio neutron-nucleus interactions for $^4$He, $^{16}$O, and $^{20}$Ne targets, starting with realistic nucleon-nucleon potentials. We discuss the effect of increasing model space sizes and symmetry-based selections on the SA-RGM norm and direct potential kernels, as well as on phase shifts, which are the input to calculations of cross sections. We demonstrate the efficacy of the SA basis and its scalability with particle numbers and model space dimensions, with a view toward ab initio descriptions of nucleon scattering and capture reactions up through the medium-mass region.
description: 10 pages, 6 figures
The Epidemiology of Severe Injuries Sustained by National Collegiate Athletic Association Student-Athletes, 2009–2010 Through 2014–2015
Creators: name: Register-Mihalik, Johna K.
name: Dompier, Thomas P.
name: Gray, Aaron D.
name: Kay, Melissa C.
name: Djoko, Aristarque
name: Kerr, Zachary Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Few researchers have described the incidence of the most severe injuries sustained by student-athletes at the collegiate level.
Galaxy Formation in the Santa Cruz semi-analytic model compared with IllustrisTNG -- I. Galaxy scaling relations, dispersions, and residuals at z=0
Creators: name: Gabrielpillai, Austen
name: Somerville, Rachel S.
name: Genel, Shy
name: Rodriguez-Gomez, Vicente
name: Pandya, Viraj
name: Yung, L. Y. Aaron
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first results from applying the Santa Cruz semi-analytic model (SAM) for galaxy formation on merger trees extracted from a dark matter only version of the IllustrisTNG (TNG) simulations. We carry out a statistical comparison between the predictions of the Santa Cruz SAM and TNG for a subset of central galaxy properties at z = 0, with a focus on stellar mass, cold and hot gas mass, star formation rate (SFR), and black hole (BH) mass. We find fairly good agreement between the mean predictions of the two methods for stellar mass functions and the stellar mass vs. halo mass (SMHM) relation, and qualitatively good agreement between the SFR or cold gas mass vs. stellar mass relation and quenched fraction as a function of stellar mass. There are greater differences between the predictions for hot (circumgalactic) gas mass and BH mass as a function of halo mass. Going beyond the mean relations, we also compare the dispersion in the predicted scaling relations, and the correlation in residuals on a halo-by-halo basis between halo mass and galaxy property scaling relations. Intriguingly, we find similar correlations between residuals in SMHM in the SAM and in TNG, suggesting that these relations may be shaped by similar physical processes. Other scaling relations do not show significant correlations in the residuals, indicating that the physics implementations in the SAM and TNG are significantly different.
description: 22 pages, 15 figures, accepted for publication in MNRAS
On the relevance of prognostic information for clinical trials: A theoretical quantification
Creators: name: Siegfried, Sandra
name: Senn, Stephen
name: Hothorn, Torsten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The question of how individual patient data from cohort studies or historical clinical trials can be leveraged for designing more powerful, or smaller yet equally powerful, clinical trials becomes increasingly important in the era of digitalisation. Today, the traditional statistical analyses approaches may seem questionable to practitioners in light of ubiquitous historical covariate information. Several methodological developments aim at incorporating historical information in the design and analysis of future clinical trials, most importantly Bayesian information borrowing, propensity score methods, stratification, and covariate adjustment. Recently, adjusting the analysis with respect to a prognostic score, which was obtained from some machine learning procedure applied to historical data, has been suggested and we study the potential of this approach for randomised clinical trials. In an idealised situation of a normal outcome in a two-arm trial with 1:1 allocation, we derive a simple sample size reduction formula as a function of two criteria characterising the prognostic score: (1) The coefficient of determination $R^2$ on historical data and (2) the correlation $ρ$ between the estimated and the true unknown prognostic scores. While maintaining the same power, the original total sample size $n$ planned for the unadjusted analysis reduces to $(1 - R^2 ρ^2) \times n$ in an adjusted analysis. Robustness in less ideal situations was assessed empirically. We conclude that there is potential for substantially more powerful or smaller trials, but only when prognostic scores can be accurately estimated.
Dzyaloshinskii-Moriya Interaction-Induced Magnetoelectric Coupling in a tetrahedral Molecular Spin-Frustrated System
Creators: name: Yu, Jie-Xiang
name: Chen, Jia
name: Sullivan, Neil
name: Cheng, Hai-Ping
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated magnetoelectric coupling in the single-molecule magnet $\mathrm{Mn}_{4}\mathrm{Te}_{4}(\mathrm{P}\mathrm{Et}_{3})_{4}$ with tetrahedral spin frustration. Our density functional studies found that an electric dipole moment can emerge with various non-collinear spin orderings. The forms of spin-dependent dipole are determined and consistent with that in non-centrosymmetric magnets driven by the Dzyaloshinskii-Moriya interaction. Writing a parameterized spin Hamiltonian, after solving for eigenvalues and eigenstates we quantified the magnetoelectric coupling by calculating the thermal average of the electric and magnetic susceptibilities, which can be influenced by external magnetic and electric fields, respectively. The quadratic relations are expected to be observable in experiments.
description: 8 pages, 6 figures
Non-Hermitian dynamics and $\mathcal{PT}$-symmetry breaking in interacting mesoscopic Rydberg platforms
Creators: name: Lourenço, José A. S.
name: Higgins, Gerard
name: Zhang, Chi
name: Hennrich, Markus
name: Macrì, Tommaso
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We simulate the dissipative dynamics of a mesoscopic system of long-range interacting particles which can be mapped into non-Hermitian spin models with a $\mathcal{PT}$ symmetry. We find rich $\mathcal{PT}$-phase diagrams with $\mathcal{PT}$-symmetric and $\mathcal{PT}$-broken phases. The dynamical regimes can be further enriched by modulating tunable parameters of the system. We outline how the $\mathcal{PT}$ symmetries of such systems may be probed by studying their dynamics. We note that systems of Rydberg atoms and systems of Rydberg ions with strong dipolar interactions are particularly well suited for such studies. We show that for realistic parameters, long-range interactions allow the emergence of new $\mathcal{PT}$-symmetric regions, generating new $\mathcal{PT}$-phase transitions. In addition, such $\mathcal{PT}$-symmetry phase transitions are found by changing the Rydberg atoms configurations. We monitor the transitions by accessing the populations of the Rydberg states. Their dynamics display oscillatory or exponential dependence in each phase.
$π-π$ scattering, QED and finite-volume quantization
Creators: name: Christ, Norman
name: Feng, Xu
name: Karpie, Joseph
name: Nguyen, Tuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Using the Coulomb gauge formulation of QED we present a lattice QCD procedure to calculate the $π^+π^+$ scattering phase shift including the effects of the Coulomb potential which appears in this formulation. The approach described here incorporates the effects of relativity and avoids finite-volume corrections that vanish as a power of the volume in which the lattice calculation is performed. This is the first step in developing a complete lattice QCD calculation of the electromagnetic and isospin-breaking light-quark mass contributions to $\varepsilon'$, the parameter describing direct CP violating effects in $K_L\toππ$ decay.
description: 51 pages, 10 figures
Stabilization of the epitaxial rhombohedral ferroelectric phase in ZrO2 by surface energy
Creators: name: Boutaybi, Ali El
name: Maroutian, Thomas
name: Largeau, Ludovic
name: Matzen, Sylvia
name: Lecoeur, Philippe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Doped HfO2 and HfO2-ZrO2 compounds are gaining significant interest thanks to their ferroelectric properties in ultrathin films. Here, we show that ZrO2 could be a playground for doping and strain engineering to increase the thickness in epitaxial thin films. Based on surface energy considerations supported by ab initio calculations, we show that a pure ZrO2 epitaxial thin film exhibits a ferroelectric rhombohedral phase (r-phase, with R3m space group) more stable than for the Hf0.5Zr0.5O2 (HZO) and pure HfO2 cases. In particular, for a thickness up to 37 nm we experimentally evidence a single (111)-oriented r-phase in ZrO2 films deposited on La2/3Sr1/3MnO3-buffered DyScO3(110) substrate, while a tetragonal phase is observed alongside the rhombohedral one on SrTiO3(001). The formation of this r-phase is discussed and compared between HfO2, ZrO2 and HZO, highlighting the role of surface energy.
description: 21 pages, 14 figures, 2 tables, including supplemental information
Turbulent cascades for a family of damped Szegö equations
Creators: name: Gérard, Patrick
name: Grellier, Sandrine
name: He, Zihui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper, we study the transfer of energy from low to high frequencies for a family of damped Szegö equations. The cubic Szegö equation has been introduced as a toy model for a totally non-dispersive degenerate Hamiltonian equation. It is a completely integrable system which develops growth of high Sobolev norms, detecting transfer of energy and hence cascades phenomena. Here, we consider a two-parameter family of variants of the cubic Szegö equation and prove that adding a damping term unexpectedly promotes the existence of turbulent cascades. Furthermore, we give a panorama of the dynamics for such equations on a six-dimensional submanifold.
description: arXiv admin note: text overlap with arXiv:1912.10933
Brief Report: Cognitive Control of Social and Nonsocial Visual Attention in Autism
Creators: name: Troiani, Vanessa
name: Sapyta, Jeffrey
name: Kovac, Megan
name: Hanna, Eleanor K.
name: DiCriscio, Antoinette Sabatino
name: Miller, Stephanie J.
name: Dichter, Gabriel S.
name: Turner-Brown, Lauren
name: Sasson, Noah J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Prosaccade and antisaccade errors in the context of social and nonsocial stimuli were investigated in youth with autism spectrum disorder (ASD; n = 19) a matched control sample (n = 19), and a small sample of youth with obsessive compulsive disorder (n = 9). Groups did not differ in error rates in the prosaccade condition for any stimulus category. In the antisaccade condition, the ASD group demonstrated more errors than the control group for nonsocial stimuli related to circumscribed interests, but not for other nonsocial stimuli or for social stimuli. Additionally, antisaccade error rates were predictive of core ASD symptom severity. Results indicate that the cognitive control of visual attention in ASD is impaired specifically in the context of nonsocial stimuli related to circumscribed interests.
The onset of quantum chaos in disordered CFTs
Creators: name: Berkooz, Micha
name: Sharon, Adar
name: Silberstein, Navot
name: Urbach, Erez Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Lyapunov exponent $λ_L$ in quantum field theories with spacetime-independent disorder interactions. Generically $λ_L$ can only be computed at isolated points in parameter space, and little is known about the way in which chaos grows as we deform the theory away from weak coupling. In this paper we describe families of theories in which the disorder coupling is an exactly marginal deformation, allowing us to follow $λ_L$ from weak to strong coupling. We find surprising behaviors in some cases, including a discontinuous transition into chaos. We also derive self-consistency equations for the two- and four-point functions for products of $N$ nontrivial CFTs deformed by disorder at leading order in $1/N$.
description: Note: 40 pages plus appendices, 15 figures. The companion article arXiv:2207.11980 includes a summary of the results which appear here
Knautia illyrica Beck, Ann. K. K. Naturhist. Hofmus.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Caprifoliaceae
Knautia
Knautia illyrica

description: Knautia illyrica Beck, Ann. K. K. Naturhist. Hofmus. 9(3–4): 351. 1894.
 Ind. Loc.:—“Litorale austriacum: In locis saxosis calcareis circa Tergestum prope Rojano, Longera, Basovicca etc.; prope St. Peter, Prato Grande et in sylva Kaiserwald prope Polam, Veglia. Croatia: Lika”. EST, FVG
 Type:—Not designated.
 Compiled by:— C. Salmeri
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on pages 95-96, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
Long time asymptotics for the nonlocal mKdV equation with finite density initial data
Creators: name: Zhou, Xuan
name: Fan, Engui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, we consider the Cauchy problem for an integrable real nonlocal (also called reverse-space-time) mKdV equation with nonzero boundary conditions \begin{align*} &q_t(x,t)-6σq(x,t)q(-x,-t)q_{x}(x,t)+q_{xxx}(x,t)=0, &q(x,0)=q_{0}(x),\lim_{x\to \pm\infty} q_{0}(x)=q_{\pm}, \end{align*} where $|q_{\pm}|=1$ and $q_{+}=δq_{-}$, $σδ=-1$. Based on the spectral analysis of the Lax pair, we express the solution of the Cauchy problem of the nonlocal mKdV equation in terms of a Riemann-Hilbert problem. In a fixed space-time solitonic region $-6
description: 54 pages. arXiv admin note: text overlap with arXiv:2108.06284
Relativistic fine structure of the (He4,mu) ion 2p-levels
Creators: name: Giachetti, Riccardo
name: Sorace, Emanuele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Motivated by the recent experimental measures of the 2p-states fine splitting of the muonic He4 ion [1], we think it may have some interest to present an independent calculation in terms of the two-body relativistic equation for a scalar and a fermion developed in [2,3] for mesic atoms. This work can thus be considered an addendum to these last papers in a different range for the masses of the two components. It gives theoretical results in good agreement with the recent experimental measures.
Can angular oscillations probe superfluidity in dipolar supersolids?
Creators: name: Norcia, Matthew A.
name: Poli, Elena
name: Politi, Claudia
name: Klaus, Lauritz
name: Bland, Thomas
name: Mark, Manfred J.
name: Santos, Luis
name: Bisset, Russell N.
name: Ferlaino, Francesca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Angular oscillations can provide a useful probe of the superfluid properties of a system. Such measurements have recently been applied to dipolar supersolids, which exhibit both density modulation and phase coherence, and for which robust probes of superfluidity are particularly interesting. So far, these investigations have been confined to linear droplet arrays. Here, we explore angular oscillations in systems with 2D structure, which in principle have greater sensitivity to superfluidity. Surprisingly, in both experiment and simulation, we find that the frequency of angular oscillations remains nearly unchanged even when the superfluidity of the system is altered dramatically. This indicates that angular oscillation measurements do not always provide a robust experimental probe of superfluidity with typical experimental protocols.
description: 4 pages, 4 figures
Delicate topology protected by rotation symmetry: Crystalline Hopf insulators and beyond
Creators: name: Nelson, Aleksandra
name: Neupert, Titus
name: Alexandradinata, A.
name: Bzdušek, Tomáš
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Pontrjagin's seminal topological classification of two-band Hamiltonians in three momentum dimensions is hereby enriched with the inclusion of a crystallographic rotational symmetry. The enrichment is attributed to a new topological invariant which quantifies a $2π$-quantized change in the Berry-Zak phase between a pair of rotation-invariant lines in the bulk, three-dimensional Brillouin zone; because this change is reversed on the complementary section of the Brillouin zone, we refer to this new invariant as a returning Thouless pump (RTP). We find that the RTP is associated to anomalous values for the angular momentum of surface states, which guarantees metallic in-gap states for open boundary condition with sharply terminated hoppings; more generally for arbitrarily terminated hoppings, surface states are characterized by Berry-Zak phases that are quantized to a rational multiple of $2π$. The RTP adds to the family of topological invariants (the Hopf and Chern numbers) that are known to classify two-band Hamiltonians in Wigner-Dyson symmetry class A. Of these, the RTP and Hopf invariants are delicate, meaning that they can be trivialized by adding a particular trivial band to either the valence or the conduction subspace. Not all trivial band additions will nullify the RTP invariant, which allows its generalization beyond two-band Hamiltonians to arbitrarily many bands; such generalization is a hallmark of symmetry-protected delicate topology.
description: v2: added summary of key terms and notions in Appendix B; small edits in the text
Parabolic interface reconstruction for 2D volume of fluid methods
Creators: name: Remmerswaal, Ronald A.
name: Veldman, Arthur E. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: For capillary driven flow the interface curvature is essential in the modelling of surface tension via the imposition of the Young--Laplace jump condition. We show that traditional geometric volume of fluid (VOF) methods, that are based on a piecewise linear approximation of the interface, do not lead to an interface curvature which is convergent under mesh refinement in time-dependent problems. Instead, we propose to use a piecewise parabolic approximation of the interface, resulting in a class of piecewise parabolic interface calculation (PPIC) methods. In particular, we introduce the parabolic LVIRA and MOF methods, PLVIRA and PMOF, respectively. We show that a Lagrangian remapping method is sufficiently accurate for the advection of such a parabolic interface. It is numerically demonstrated that the newly proposed PPIC methods result in an increase of reconstruction accuracy by one order, convergence of the interface curvature in time-dependent advection problems and Weber number independent convergence of a droplet translation problem, where the advection method is coupled to a two-phase Navier--Stokes solver. The PLVIRA method is applied to the simulation of a 2D rising bubble, which shows good agreement to a reference solution.
Exploring glassy dynamics with Markov state models from graph dynamical neural networks
Creators: name: Soltani, Siavash
name: Sinclair, Chad W.
name: Rottler, Joerg
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Amorphous materials exhibit structural heterogeneities that relax only on long timescales. Using machine learning techniques, we construct a Markov state model (MSM) for model glass formers that coarse-grains the dynamics into a low-dimensional space, in which transitions occur with rates corresponding to the slowest modes of the system. The transition timescale between states is more than an order of magnitude larger than the conventional alpha-relaxation time, and reveals a fragile to strong crossover at the glass transition. The learned map of states assigned to the particles exhibits correlations of a few molecular diameters both at liquid and glassy temperatures. We show that the MSM effectively constructs a map of scaled excess Voronoi volume, and the free energy difference between the two states is given exactly by the entropy of the these distributions. These results resonate with classic free volume theories of the glass transition, singling out local packing fluctuations as the slowest relaxing features.
Knautia velutina Briq., Annuaire Conserv. Jard. Bot.
Creators: name: Peruzzi, Lorenzo
name: Galasso, Gabriele
name: Domina, Gianniantonio
name: Bartolucci, Fabrizio
name: Santangelo, Annalisa
name: Alessandrini, Alessandro
name: Astuti, Giovanni
name: D'Antraccoli, Marco
name: Roma-Marzio, Francesco
name: Ardenghi, Nicola M. G.
name: Barberis, Giuseppina
name: Conti, Fabio
name: Bernardo, Liliana
name: Peccenini, Simonetta
name: Stinca, Adriano
name: Wagensommer, Robert P.
name: Bonari, Gianmaria
name: Iamonico, Duilio
name: Iberite, Mauro
name: Viciani, Daniele
name: Guacchio, Emanuele Del
name: Galdo, Gianpietro Giusso Del
name: Lastrucci, Lorenzo
name: Villani, Mariacristina
name: Brunu, Antonello
name: Magrini, Sara
name: Pistarino, Annalaura
name: Brullo, Salvatore
name: Salmeri, Cristina
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Dipsacales
Caprifoliaceae
Knautia
Knautia velutina

description: Knautia velutina Briq., Annuaire Conserv. Jard. Bot. Genève 6(3): 94(–95). 1902. [1 December 1902]
 Ind. Loc.:—“du Mont Saint-Iliane (?) dans la province de Trévise, récoltée par M.R. Pampanini (h. Delessert et h. Lausanne)”. VEN
 Type:—Not designated.
 Compiled by:— A. Brunu
description: Published as part of Peruzzi, Lorenzo, Galasso, Gabriele, Domina, Gianniantonio, Bartolucci, Fabrizio, Santangelo, Annalisa, Alessandrini, Alessandro, Astuti, Giovanni, D'Antraccoli, Marco, Roma-Marzio, Francesco, Ardenghi, Nicola M. G., Barberis, Giuseppina, Conti, Fabio, Bernardo, Liliana, Peccenini, Simonetta, Stinca, Adriano, Wagensommer, Robert P., Bonari, Gianmaria, Iamonico, Duilio, Iberite, Mauro, Viciani, Daniele, Guacchio, Emanuele Del, Galdo, Gianpietro Giusso Del, Lastrucci, Lorenzo, Villani, Mariacristina, Brunu, Antonello, Magrini, Sara, Pistarino, Annalaura, Brullo, Salvatore & Salmeri, Cristina, 2019, An inventory of the names of native, non-endemic vascular plants described from Italy, their loci classici and types, pp. 1-215 in Phytotaxa 410 (1) on page 96, DOI: 10.11646/phytotaxa.410.1.1, http://zenodo.org/record/13716045
Reducibility of 1-D Quantum Harmonic Oscillator with Decaying Conditions on the Derivative of Perturbation Potentials
Creators: name: Liang, Zhenguo
name: Wang, Zhiqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37K55, 35P05, 81Q15

description: We prove the reducibility of 1-D quantum harmonic oscillators in $\mathbb R$ perturbed by a quasi-periodic in time potential $V(x,ωt)$ under the following conditions, namely there is a $C>0$ such that \begin{equation*} |V(x,θ)|\le C,\quad|x\partial_xV(x,θ)|\le C,\quad\forall~(x,θ)\in\mathbb R\times\mathbb T_σ^n. \end{equation*} The corresponding perturbation matrix $(P_i^j(θ))$ is proved to satisfy $(1+|i-j|)| P_i^j(θ)|\le C$ and $\sqrt{ij}|P_{i+1}^{j+1}(θ)-P_i^j(θ)|\le C$ for any $θ\in\mathbb T_σ^n$ and $i,j\geq 1$. A new reducibility theorem is set up under this kind of decay in the perturbation matrix element $P_{i}^j(θ)$ as well as the discrete difference matrix element $P_{i+1}^{j+1}(θ)-P_i^j(θ)$. For the proof the novelty is that we use the decay in the discrete difference matrix element to control the measure estimates for the thrown parameter sets.
Structural origins of the infamous "Low Temperature Orthorhombic" to "Low Temperature Tetragonal" phase transition in high-Tc cuprates
Creators: name: Tidey, Jeremiah P.
name: Keegan, Christopher
name: Bristowe, Nicholas C.
name: Mostofi, Arash A.
name: Hong, Zih-Mei
name: Chen, Bo-Hao
name: Chuang, Yu-Chun
name: Chen, Wei-Tin
name: Senn, Mark S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We undertake a detailed high-resolution diffraction study of a novel plain band insulator, La$_2$MgO$_4$, which may be viewed as a structural surrogate system of the undoped end-member of the high-T$_c$ superconductors, La$_{2-x-y}$A$^{2+}_x$RE$^{3+}_y$CuO$_{4}$ (A = Ba, Sr, RE= Rare Earth). We find that La$_2$MgO$_4$ exhibits the infamous low-temperature orthorhombic (LTO) to low-temperature tetragonal (LTT) phase transition that has been linked to the suppression of superconductivity in a variety of underdoped cuprates, including the well known La$_{2-x}$Ba$_{x}$CuO$_4$ ($x=0.125$). Furthermore, we find that the LTO-to-LTT phase transition in La$_2$MgO$_4$ occurs for an octahedral tilt angle in the 4 $^{\circ}$ to 5 $^{\circ}$ range, similar to that which has previously been identified as a critical tipping point for superconductivity in these systems. We show that this phase transition, occurring in a system lacking spin correlations and competing electronic states such as charge-density waves and superconductivity, can be understood by simply navigating the density-functional theory ground-state energy landscape as a function of the order parameter amplitude. This result calls for a careful re-investigation of the origins of the phase transitions in high-T$_c$ superconductors based on the hole-doped, $n = 1$ Ruddelsden-Popper lanthanum cuprates.
description: 6 pages, 4 figures
A general framework for gravitational charges and holographic renormalization
Creators: name: Chandrasekaran, Venkatesa
name: Flanagan, Eanna E.
name: Shehzad, Ibrahim
name: Speranza, Antony J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop a general framework for constructing charges associated with diffeomorphisms in gravitational theories using covariant phase space techniques. This framework encompasses both localized charges associated with spacetime subregions, as well as global conserved charges of the full spacetime. Expressions for the charges include contributions from the boundary and corner terms in the subregion action, and are rendered unambiguous by appealing to the variational principle for the subregion, which selects a preferred form of the symplectic flux through the boundaries. The Poisson brackets of the charges on the subregion phase space are shown to reproduce the bracket of Barnich and Troessaert for open subsystems, thereby giving a novel derivation of this bracket from first principles. In the context of asymptotic boundaries, we show that the procedure of holographic renormalization can be always applied to obtain finite charges and fluxes once suitable counterterms have been found to ensure a finite action. This enables the study of larger asymptotic symmetry groups by loosening the boundary conditions imposed at infinity. We further present an algorithm for explicitly computing the counterterms that renormalize the action and symplectic potential, and, as an application of our framework, demonstrate that it reproduces known expressions for the charges of the generalized Bondi-Metzner-Sachs algebra.
description: 57 pages + 29 pages appendices and references, 1 figure; v2 added 3 tables, additional references, and new discussion of Casimir energy in AdS