cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rapid Online Identification of Adverse Events After Influenza Immunization in Children by PCIRN’s National Ambulatory Network
Creators: name: Bettinger, Julie A.
name: Vanderkooi, Otto G.
name: MacDonald, Judy
name: Kellner, James D.
Publisher: name: The University of British Columbia
Year: 2016

description: Background: A National Ambulatory Network was created in 2009 to rapidly assess the safety of influenza vaccines. In 2012, the network was expanded to monitor the safety of live attenuated influenza vaccine and trivalent inactivated influenza vaccine in children. Methods: We used an online survey administered 7 days after influenza immunization to track new or exacerbated health problems that required medical consultation or prevented daily activities. Parents of immunized children completed the survey. Reported adverse events were followed up by telephone within 48 hours of the online report. A sample of nonresponders was contacted by telephone to ensure the online responder group was representative. Event rates after the 2 influenza vaccines were compared. Results: A total of 1230 parents completed an online or telephone survey, for a participation rate of 83%: 72% responded online and an additional 11% were reached by telephone. The rate of severe events in children immunized with an influenza vaccine was 4.7% (3.5–5.9%). The frequency and types of events reported were similar between online and telephone reports. Reported rates of severe events were similar after trivalent inactivated influenza or live attenuated influenza vaccine (4.0% vs. 5.1%, respectively). The online survey was easy to access and understand. Most respondents (94%) would participate next year. Conclusions: The rate and type of adverse events after immunization with trivalent inactivated influenza versus live attenuated influenza vaccine were similar and did not vary by reporting process (online vs. telephone). The electronic surveillance methodology provided rapid vaccine safety data in children. The electronic survey methodology was acceptable and feasible.
Energetic bounds on gyrokinetic instabilities. Part I: Fundamentals
Creators: name: Helander, P.
name: Plunk, G. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Upper bounds on the growth of free energy in gyrokinetics are derived. These bounds apply to all local gyrokinetic instabilities in the geometry of a flux tube, i.e. a slender volume of plasma aligned with the magnetic field, regardless of the geometry of field, the number of particle species, or collisions. The results apply both to linear instabilities and to the nonlinear growth of finite-amplitude fluctuations.
Gravitational Waves and Conformal Time Transformations
Creators: name: Zhang, P. -M.
name: Zhao, Q. -L.
name: Horvathy, P. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Recent interest in the "memory effect" prompted us to revisit the relation of gravitational aves and oscillators. 50 years ago Niederer [1] found that an isotropic harmonic oscillator with a constant frequency can be mapped onto a free particle. Later Takagi [2] has shown that "time-dependent scaling" extends the oscillator versus free particle correspondence to a time-dependent frequency when the scale factor satisfies a Sturm-Liouville equation. More recently Gibbons [3] pointed out that time redefinition is conveniently studied in terms of the Schwarzian derivative. The oscillator versus free particle correspondence "Eisenhart-Duval lifts" to a conformal transformation between Bargmann spaces [4-7]. These methods are extended to spacetimes which are not conformally flat and have a time-dependent profile, and can then be applied to the geodesic motion in a plane gravitational wave.
description: Reorganised and refined. Title shortened. 27 pages, 4 double figures. The Conclusion expanded with an Outlook for further research and additional references . Accepted for publication in Ann. Phys. (N.Y.)
Exact matrix product state representation and convergence of a fully correlated electronic wavefunction in the infinite basis limit
Creators: name: Friesecke, Gero
name: Graswald, Benedikt R.
name: Legeza, Örs
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this article we present the exact representation of a fully correlated electronic wavefunction as the single-particle basis approaches completeness. It consists of a half-infinite chain of matrices of exponentially increasing size. The complete basis limit is illustrated numerically using the density matrix renormalization group method by computing the core-valence entanglement in the C$_2$ ground state in increasing subsets of cc-pVTZ and pVQZ bases until convergence is reached.
description: Fixed latex bug which printed both old and updated bibliography
pyscreener: A Python Wrapper for Computational Docking Software
Creators: name: Graff, David E.
name: Coley, Connor W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: pyscreener is a Python library that seeks to alleviate the challenges of large-scale structure-based design using computational docking. It provides a simple and uniform interface that is agnostic to the backend docking engine with which to calculate the docking score of a given molecule in a specified active site. Additionally, pyscreener features first-class support for task distribution, allowing users to seamlessly scale their code from a local, multi-core setup to a large, heterogeneous resource allocation.
Effect of saturable response to two-photon absorption on the readout signal level of three-dimensional bit optical data storage in a photochromic polymer
Creators: name: Gu, Min
name: Amistoso, Jose Omar
name: Toriumi, Akiko
name: Irie, Masahiro
name: Kawata, Satoshi
Publisher: name: Swinburne
Year: 2024

description: We observe a saturable change in the refractive index induced by two-photon absorption in a photochromic polymer, while the erasable nature of the polymer is maintained. As a result, the support region of spatial frequencies of the recorded data bits caused by the refractive index change in the polymer is enlarged. This feature leads to the significant enhancement of the signal level in a reflection confocal microscope readout system for three-dimensional photochromic bit optical data storage. © 2001 American Institute of Physics.
The Paradox of Hyperconnected Disconnection: Social Media  and the Collapse of Theory of Mind
Creators: name: Monroe, Scott
Publisher: name: Zenodo
Year: 2025

description: This research introduces a novel theoretical framework linking prolonged social media use to the erosion of Theory of Mind (ToM)—the cognitive faculty responsible for empathy, perspective-taking, and social understanding. While digital platforms have enabled unprecedented levels of connectivity, they simultaneously diminish the embodied, real-time cues—such as facial expression, tone of voice, and synchronous feedback—that scaffold human empathy and relational cognition. The result is a paradoxical form of disconnection within hyperconnected systems.

Drawing from cognitive neuroscience, developmental psychology, digital phenomenology, and sociocultural theory, this paper proposes that the rise of algorithmically mediated interaction fosters cognitive disembodiment, emotional compression, and a shift from authentic mentalization to heuristic categorization. It introduces the Cognitive NPC Hypothesis to describe how the perception of others as sentient agents is replaced by a perception of them as predictable, behaviorally scripted entities—flattened into content tropes, ideological identifiers, or emotional archetypes.

This condition, when scaled, has significant consequences for society. Erosion of Theory of Mind weakens the psychological infrastructure upon which moral reasoning, democratic dialogue, and social trust depend. As empathy declines and mutual recognition is replaced by algorithmically reinforced tribalism, societies become more polarized, performative, and emotionally disengaged. The risk is not simply personal loneliness—but collective alienation, where communication flourishes while understanding collapses.

Particular attention is given to the impact on children and adolescents, whose neurodevelopmental trajectories are especially vulnerable to disembodied, screen-mediated interaction. In response, the paper presents a Framework for Digital Empathy, outlining actionable interventions in platform design, educational curricula, and policy development to restore cognitive and emotional depth in digital life.

Published under the title The Paradox of Hyperconnected Disconnection: Social Media and the Collapse of Theory of Mind, this work seeks to reframe the conversation around digital media—not merely as a matter of engagement or addiction, but as a civilizational crisis affecting the cognitive foundations of what it means to live among other minds.
Au-delà du chaos : l’héritage de l’impunité institutionnalisée pour expliquer l’extrême violence au Guatemala post-conflit
Creators: name: Denicourt-Fauvel, Camille
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2020
Subjects: Amérique latine
Guatemala
Violence
Démocratie
Justice transitionnelle
Impunité
Féminicide
Transition démocratique post-conflit
Droits humains
Imaginaire politique

description: Cette thèse de maîtrise se penche sur le paradoxe de la continuation de la violence en « temps de paix » au Guatemala. Elle met de l’avant une explication liée à la persistance en démocratie post-conflit d’une culture conservatrice de la violence, phénomène rendu possible par le cautionnement de l’impunité au moment de la transition post-conflit. À la lumière de la littérature, cette thèse s’inscrit dans l’objectif de décortiquer le rôle de l’impunité dans la prolifération de la violence et, en contrepartie, l’apport des mouvements sociaux à la démocratie. Ce travail offre d’abord une analyse de l’impact de la justice transitionnelle sur le processus de démocratisation guatémaltèque. Il ressort de cet exposé que la mise en œuvre des prescriptions de la justice transitionnelle au Guatemala a, au nom de la stabilité et de la réconciliation, permis à la norme autoritaire de l’impunité de se perpétuer par-delà la transition démocratique. Une présentation des luttes pour la justice en matière de droits humains permet de constater toute la difficulté d’obtenir justice pour les victimes de violations graves de droits humains, même en ce qui a trait à des actes aussi graves que les crimes contre l’humanité et ceux de génocide. Si des luttes sociales en faveur de la justice ont, au fil du temps, permis la reconnaissance par les tribunaux des certaines des pires atrocités commises par les militaires, une analyse du féminicide contemporain permet de nuancer ces victoires, mettant en relief l’institutionnalisation de l’impunité et son rôle dans la prolifération de l’extrême violence qui continue d’affliger le pays. Cette thèse s’inspire de différentes perspectives théoriques pour contempler la propension des luttes pour la justice d’investir l’imaginaire citoyen et parvenir contre toute attente à atténuer les violences à travers une redéfinition critique de la démocratie, malgré des blocages institutionnels certains.
Up in the air: Presence and collection of DNA from air and air conditioner units
Creators: name: Goray, M
name: Taylor, D
name: Bibbo, E
name: Patel, D
name: Fantinato, C
name: Fonneløp, AE
name: Gill, P
name: van Oorschot, Roland
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 31
subject: Biological sciences
subject: FOS: Biological sciences
classificationCode: 3101
subject: Biochemistry and cell biology
classificationCode: 3401
subject: Analytical chemistry

description: Biological material is routinely collected at crime scenes and from exhibits and is a key type of evidence during criminal investigations. Touch or trace DNA samples from surfaces and objects deemed to have been contacted are frequently collected. However, a person of interest may not leave any traces on contacted surfaces, for example, if wearing gloves. A novel means of sampling human DNA from air offers additional avenues for DNA collection. In the present study, we report on the results of a pilot study into the prevalence and persistence of human DNA in the air. The first aspect of the pilot study investigates air conditioner units that circulate air around a room, by sampling units located in four offices and four houses at different time frames post-cleaning. The second aspect investigates the ability to collect human DNA from the air in rooms, with and without people, for different periods of time and with different types of collection filters. Results of this pilot study show that human DNA can be collected on air conditioner unit surfaces and from the air, with air samples representing the more recent occupation while air conditioner units showing historic use of the room.
Unexpected detection rate dependence of the intrinsic detection efficiency in single-photon detectors based on avalanche diodes
Creators: name: Raupach, Sebastian M. F.
name: Degiovanni, Ivo Pietro
name: Georgieva, Hristina
name: Meda, Alice
name: Hofer, Helmuth
name: Gramegna, Marco
name: Genovese, Marco
name: Kück, Stefan
name: López, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Single-photon detectors are a pivotal component in photonic quantum technologies. A precise and comprehensive calibration of the intrinsic detection efficiency is of utmost importance to ensure the proper evaluation of the performance in view of the specific technological application of interest, such as the protection against security breaches in quantum cryptographic solutions. Here we report on a systematic study on and comprehensive analysis of the estimation of the intrinsic detection efficiency of two commercial single-photon detectors based on single-photon avalanche diodes (SPADs) for various mean photon numbers and at high laser pulse repetition rates using different techniques. We observed an unexpected and signifucant drop in intrinsic detection efficiency at detection rates of 10 % and higher relative to the maximum detection rate. It is demonstrated that for data analysis a statistical model for the detection rate conveniently can be used if no timestamped data are available. We conclude that the full characterization of single-photon detectors used in critical applications should include the sensitivity of their intrinsic detection efficiency to high event rates.
description: 23 pages, 9 figures
Scattering Amplitudes, the Tail Effect, and Conservative Binary Dynamics at $O(G^4)$
Creators: name: Bern, Zvi
name: Parra-Martinez, Julio
name: Roiban, Radu
name: Ruf, Michael S.
name: Shen, Chia-Hsien
name: Solon, Mikhail P.
name: Zeng, Mao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We complete the calculation of conservative two-body scattering dynamics at fourth post-Minkowskian order, i.e. $O(G^4)$ and all orders in velocity, including radiative contributions corresponding to the tail effect in general relativity. As in previous calculations, we harness powerful tools from the modern scattering amplitudes program including generalized unitarity, the double copy, and advanced multiloop integration methods, in combination with effective field theory. The classical amplitude involves complete elliptic integrals, and polylogarithms with up to transcendental weight two. Using the amplitude-action relation, we obtain the radial action directly from the amplitude, and match the known overlapping terms in the post-Newtonian expansion.
description: 8 pages; 2 figures
How to introduce instrumental agents: Evidence from binding in Russian event nominal phrases
Creators: name: Miyauchi, Takuya
Publisher: name: Zenodo
Year: 2020
Subjects: Russian
event nominal phrases
DP--NP
instrumental agents

description: The aim of this paper is to argue that instrumental agents in Russian are introduced by a silent P through binding phenomena by instrumental agents in event nominal phrases. Two assumptions are adopted in this paper: one is the absence of the DP layer in Russian based on binding phenomena and the other is a particular structure of event nominal phrases. I show that the appropriateness of proposing a silent P is supported by Generalized Case Realization Requirement in Russian and that the silent P is a lexical preposition, not a functional one due to its ability to bind objects out of PP.
Constraints on Pre-Recombination Early Dark Energy from SPT-3G Public Data
Creators: name: La Posta, Adrien
name: Louis, Thibaut
name: Garrido, Xavier
name: Hill, J. Colin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Early dark energy (EDE) is a proposed solution to the Hubble tension in which a new cosmological field accelerates cosmic expansion prior to recombination and reduces the physical size of the sound horizon. In previous work, a slight preference for a non-zero EDE contribution was found in the latest Atacama Cosmology Telescope data (ACT DR4), while the Planck satellite legacy data alone do not show evidence for it. In this work, we use the most recent public data from the South Pole Telescope (SPT-3G) to constrain the parameters of the EDE scenario. We find that at the current precision level of SPT-3G, an EDE contribution to the total energy density of the universe prior to recombination of $\sim 10\%$ can not be ruled out, but that the data are also consistent with no EDE. The combination of ACT DR4 and SPT-3G with the Planck large-scale temperature anisotropy measurement shows a hint ($2.6σ$) for non-zero EDE; however, this preference disappears when the full Planck 2018 data set is included.
description: 11 pages, 5 figures
"Comparing greco-roman and north african play and toys", Organisation ERC Locus Ludi, Images en jeu: réception et transferts, Université de Fribourg, 24-25.10.2019
Creators: name: Rossie Jean-Pierre, Membre associé de Locus Ludi
Publisher: name: Zenodo
Year: 2019
Subjects: Antiquity, Greece, Rome, Nord Africa, Transmission, Ludic Culture

description: Is it possible and useful to compare the tangible and intangible play cultures of Greco-Roman antiquity and of the North African and Saharan rural world, two worlds separated by so many centuries and differentiated by natural and human environments, beliefs, customs and specific social organizations? In developing this working document I started from the assumption that it could be possible and following the analysis of the differences and similarities of play activities and toys and their material and sociocultural context I noticed several affinities proven both by literary descriptions and by images
title: 02_0502
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Upper Field Strength Limit of Fast Radio Bursts
Creators: name: Zhang, Yu
name: Wu, Hui-Chun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are cosmological radio transients with unclear generation mechanism. Known characteristics such as their luminosity, duration, spectrum and repetition rate, etc. suggest that FRBs are powerful coherent radio signals at GHz frequencies, but the status of FRBs near source remain unknown. As an extreme astronomical event, FRBs should be accompanied by energy -- comparable or even more powerful x/γ-ray counterparts. Here, particle-in-cell simulations of ultra-strong GHz radio pulse interaction with GeV photons show that at 3*10^12V/cm field-strengths, quantum cascade can generate dense pair plasmas, which greatly dampen the radio pulse. Thus, in the presence of GeV photons in the source region, GHz radio pulses stronger than 3*10^12V/cm cannot escape. This result indicates an upper field-strength limit of FRB at the source.
Rise in injury rates for older male motorcyclists : An emerging medical and public health concern
Creators: name: Brussoni, Mariana
name: Wong, Kendra
name: Creighton, Genevieve
name: Olsen, Lise
Publisher: name: British Columbia Medical Association
Year: 2021

description: Background: Findings from research in the United States show an increase in injury and mortality rates among older male motorcycle riders. Because trends in ridership and injuries have not been well investigated in Canada, we undertook a study to determine the effect of the increasing age of male motorcycle riders on injury patterns in British Columbia. Methods: To examine the relationship between rider age and injury patterns, we analyzed data from British Columbia’s motorcycle-related Discharge Abstract Database for 2001 to 2010. Results: We found the motorcycle-related hospitalization rate for males age 45 to 74 increased significantly from 18.4 to 36.0 per 100 000 population over the study period, and hospitalization costs rose by 61%. The rate for younger male riders and both younger and older female riders did not change significantly. Findings indicated longer hospital stays and different injury patterns for older male riders compared with younger male riders, and higher hospitalization rates for older male riders in less urban parts of BC. Conclusions: Our findings suggest the need for an evidence-based injury prevention initiative targeting older male motorcycle riders. Such an initiative could include injury prevention counseling by health care providers and the development of other strategies to prevent motorcycle-related injuries among older male riders.
Hybrid Modeling of Regional COVID-19 Transmission Dynamics in the U.S
Creators: name: Bai, Yue
name: Safikhani, Abolfazl
name: Michailidis, George
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The fast transmission rate of COVID-19 worldwide has made this virus the most important challenge of year 2020. Many mitigation policies have been imposed by the governments at different regional levels (country, state, county, and city) to stop the spread of this virus. Quantifying the effect of such mitigation strategies on the transmission and recovery rates, and predicting the rate of new daily cases are two crucial tasks. In this paper, we propose a hybrid modeling framework which not only accounts for such policies but also utilizes the spatial and temporal information to characterize the pattern of COVID-19 progression. Specifically, a piecewise susceptible-infected-recovered (SIR) model is developed while the dates at which the transmission/recover rates change significantly are defined as "break points" in this model. A novel and data-driven algorithm is designed to locate the break points using ideas from fused lasso and thresholding. In order to enhance the forecasting power and to describe additional temporal dependence among the daily number of cases, this model is further coupled with spatial smoothing covariates and vector auto-regressive (VAR) model. The proposed model is applied to several U.S. states and counties, and the results confirm the effect of "stay-at-home orders" and some states' early "re-openings" by detecting break points close to such events. Further, the model provided satisfactory short-term forecasts of the number of new daily cases at regional levels by utilizing the estimated spatio-temporal covariance structures. They were also better or on par with other proposed models in the literature, including flexible deep learning ones. Finally, selected theoretical results and empirical performance of the proposed methodology on synthetic data are reported which justify the good performance of the proposed method.
Open-flow mixing and transfer operators
Creators: name: Klünker, Anna
name: Padberg-Gehle, Kathrin
name: Thiffeault, Jean-Luc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study finite-time mixing in time-periodic open flow systems. We describe the transport of densities in terms of a transfer operator, which is represented by the transition matrix of a finite-state Markov chain. The transport processes in the open system are organized by the chaotic saddle and its stable and unstable manifolds. We extract these structures directly from leading eigenvectors of the transition matrix. We use different measures to quantify the degree of mixing and show that they give consistent results in parameter studies of two model systems.
description: 22 pages, 39 figures. LaTeX with custom Royal Society class. To appear in Phil. Trans. Roy. Soc. A
Gravitational Wave Imprints of Left-Right Symmetric Model with Minimal Higgs Sector
Creators: name: Gráf, Lukáš
name: Jana, Sudip
name: Kaladharan, Ajay
name: Saad, Shaikh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the gravitational wave imprints of left-right symmetric model equipped with universal seesaw mechanism allowing for the natural generation of hierarchical masses of the Standard Model fermions. The scalar sector of this model is the minimal one, consisting of only two Higgs doublets. Following the construction of the full thermal potential for this model, we perform a scan of the entire parameter space and identify the region in which the cosmic phase transition associated with the left-right symmetry breaking gives gravitational wave signals detectable by a variety of planned space-based interferometers. Then we also discuss the relevant collider implications of this beyond the Standard Model scenario.
description: 21 pages + references, 6 figures, references added, matches published version
Exact time evolution formulae in the XXZ spin chain with domain wall initial state
Creators: name: Stéphan, Jean-Marie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the time evolution of the spin-1/2 XXZ chain initialized in a domain wall state, where all spins to the left of the origin are up, all spins to its right are down. The focus is on exact formulae, which hold for arbitrary finite (real or imaginary) time. In particular, we compute the amplitudes corresponding to the process where all but $k$ spins come back to their initial orientation, as a $k-$fold contour integral. These results are obtained using a correspondence with the six vertex model, and taking a somewhat complicated Hamiltonian/Trotter-type limit. Several simple applications are studied and also discussed in a broader context.
description: 44 pages, 5 figures
Ensembles of unified crust and core equations of state in a nuclear-multimessenger astrophysics environment
Creators: name: Newton, William G.
name: Balliet, Lauren
name: Budimir, Srdan
name: Crocombe, Gabriel
name: Douglas, Brianna
name: Head, Thomas Blake
name: Langford, Zach
name: Rivera, Luis
name: Sanford, Josh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present an ensemble of unified neutron star crust and core equations of state, constructed using an extended Skyrme energy density functional through the crust and outer core, and appended by two piecewise polytropes at higher densities. The equations of state are parameterized by the first three coefficients in the density expansion of the symmetry energy $J,L$ and $K_{\rm sym}$, the moment of inertia of a 1.338 M$_{\odot}$ star $I_{1.338}$ and the maximum neutron star mass $M_{\rm max}$. We construct an ensemble with uniform priors on all five parameters, and then apply data filters to the ensemble to explore the effect of combining neutron skin data from PREX with astrophysical measurements of radii and tidal deformabilities from NICER and LIGO/VIRGO. Neutron skins are calculated directly using the EDFs. We demonstrate that both the nuclear data and astrophysical data play a role in constraining crust properties such as the mass, thickness and moment of inertia of the crust and the nuclear pasta layers therein, and that astrophysical data better constrains $K_{\rm sym}$ than PREX data.
description: 11 Pages, 3 figures, 1 table; accepted by EPJA
Top-pair production at the LHC with MiNNLO$_{\rm PS}$
Creators: name: Mazzitelli, Javier
name: Monni, Pier Francesco
name: Nason, Paolo
name: Re, Emanuele
name: Wiesemann, Marius
name: Zanderighi, Giulia
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider the production of a pair of heavy quarks and illustrate the derivation of the MiNNLO method to match next-to-next-to-leading order calculations with parton showers (NNLO+PS) for this class of processes. As a first application, we construct an event generator for the fully differential simulation of hadronic top-quark pair production at NNLO+PS and discuss all details of its implementation in a parton shower Monte Carlo framework. We present new phenomenological results for the Large Hadron Collider obtained by including the tree-level decays of the top quarks, while accounting for spin-correlation effects. A comprehensive comparison to LHC measurements shows an excellent description of experimental data across multiple hadronic and leptonic particle-level observables. The computer code is available for download within the POWHEG-BOX.
description: 55 pages, 12 figures
Excitons under strain: light absorption and emission in strained hexagonal boron nitride
Creators: name: Lechifflart, Pierre
name: Paleari, Fulvio
name: Attaccalite, Claudio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Hexagonal boron nitride is an indirect band gap material with a strong luminescence in the ultraviolet. This luminescence originates from bound excitons recombination assisted by different phonon modes. The coupling between excitons and phonons is so strong that the resulting light emission is as efficient as the one of direct band gap materials. In this manuscript we investigate how uniaxial strain modifies the electronic and optical properties of this material, and in particular how it affects the exciton-phonon coupling. Using a formulation of this coupling based on finite-difference displacements, recently developed by some of us, we investigate how phonon-assisted transitions change under strain. Our results open the way to the study of phonon-assisted luminescence in strained materials from first principles. Our findings are important both for experiments that directly probe \hbn under strain or for those in which it is used as substrate for other 2D material with a lattice mismatch.
Supplementary Data
Creators: name: Liu, Yang
Publisher: name: figshare
Year: 2022
Subjects: subject: 60408 Genomics
subject: FOS: Biological sciences

description: # ./hmmdb/ folder contains the hmm profiles of the pool of 248 marker genes used for hmmsearch
# ./alignments/ folder contains the alignments and raw treefiles of single proteins used for phylogenomic concatenation inferences.
Single-mode sapphire fiber Bragg grating
Creators: name: Wang, Mohan
name: Salter, Patrick S.
name: Payne, Frank P.
name: Shipley, Adrian
name: Morris, Stephen M.
name: Booth, Martin J.
name: Fells, Julian A. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We present here the inscription of single-mode waveguides with Bragg gratings in sapphire. The waveguide Bragg gratings have a novel multi-layer depressed cladding design in the 1550 nm telecommunications waveband. The Bragg gratings have a narrow bandwidth (<0.5 nm) and have survived annealing at 1000°C. The structures are inscribed with femtosecond laser direct writing, using adaptive beam shaping with a non-immersion objective. A single-mode sapphire fiber Bragg grating is created by writing a waveguide with a Bragg grating within a 425 μm diameter sapphire optical fiber, providing significant potential for accurate remote sensing in ultra-extreme environments.
description: Submitted to Optica 12 November 2021
On the Validity of Effective Potentials in Crowded Solutions of Linear and Ring Polymers with Reversible Bonds
Creators: name: Paciolla, Mariarita
name: Likos, Christos N.
name: Moreno, Angel J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We perform simulations to compute the effective potential between the centers-of-mass of two polymers with reversible bonds. We investigate the influence of the topology of the unbonded precursor (linear or ring) and the specific sequence of the reactive groups (from purely random to periodic), establishing that both have a strong impact on the effective potential. When the reactive sites of both polymers are chemically orthogonal so that only intramolecular bonds are possible, the interactions become more repulsive the closer to periodic the sequence is. The opposite effect is found if both polymers have the same type of reactive sites and intermolecular bonds can be formed. We test the validity of the effective potentials in solution, from high dilution to far above the overlap concentration, by comparing simulations of the effective fluid with those of the real all-monomer system. Very good agreement is found for the reversible linear polymers, indicating that unlike in their non-bonding counterparts many-body effects are minor even far above the overlap concentration. The agreement for the reversible rings is less satisfactory, and at high concentration the real system does not show the clustering behavior predicted by the effective potential. Results similar to the former ones are found for the partial self-correlations in ring/linear mixtures. Finally, we investigate the possibility of creating a gel of two interpenetrated reversible networks. For this purpose we simulate a 50/50 two-component mixture of reversible polymers with orthogonal chemistry for the reactive sites, so that intermolecular bonds are only formed between polymers of the same component. As predicted by both the theoretical phase diagram and the simulations of the effective fluid, the two networks in the all-monomer mixture do not interpenetrate and phase separation (demixing) is observed instead.
Reviewing Bill C-59, An Act Respecting National Security Matters 2017: What’s new, what’s out, and what’s different from Bill C-51, A National Security Act 2015?
Creators: name: Nesbitt, Michael
Publisher: name: The School of Public Policy Publications
Year: 2020

description: In 2015, Canada’s national security law landscape received some long-overdue attention in the form of Bill C-51, the Anti-Terrorism Act 2015. It was the culmination of a series of smaller initiatives that had given attention to national security law in Canada, but also a direct response to two terrorist attacks that left two Canadians dead in October 2014. Bill C-51 did indeed reinvigorate discussions around national security law in Canada, but in so doing it became a lightning rod for criticism. Bill C-59, An Act Respecting National Security Matters 2017 was not passed until June 2019, but it was nevertheless a direct response to Bill C-51 and the criticisms it faced. Yet for the most part, Bill C-59 amended but did not repeal the important new powers found in Bill C-51, even the most controversial powers; instead, Bill C-59 can be seen, in part, as a technical-legal Bill that largely entrenched the powers first conceived of in Bill C-51 by putting them on firmer legal (constitutional) footing. But Bill C-59 was also much more than a series of legal/constitutional improvements: its legislative scope went much further afield from the Bill C-51 regime, amending the authorities of agencies—like the Communications Security Establishment—that had been untouched by Bill C-51, while also greatly expanding national security oversight and review through the creation of important new bodies. The purpose of this paper is to compare these two important pieces of national security legislation with a view to explaining what these legislation reforms did, why the reforms were undertaken, and to identify the relative strengths and weaknesses of the most controversial of the reforms under each Bill. The idea is to offer an overview and comparison of these important national security legislative initiatives and, in so doing, explain where Canada stands today, in the wake of this massive legislative overhaul. But by identifying what has already been addressed, this also allows us to identify next-steps and, in particular, where should be the focus of future legislative reforms in the area of national security. Three recommendations then flow from this conclusion: first, national security legislation must be reformed with greater consistency than has happened in the past; second, as an immediate matter of priority, Canada must address its “intelligence-to-evidence” problem, that is the system by which it converts—or fails to convert—raw intelligence into the sort of evidence usable by courts of law; and third, enforcement of Canada’s national security laws must now take priority, in particular by prosecuting returning foreign fighters and far right extremists where their activities meet the threshold of a terrorism offence, as well as terrorist financing to a greater degree than Canada has seen to date.
description: The School of Public Policy Publications, Vol. 13 (2020)
Self-Force Calculations with a Spinning Secondary
Creators: name: Mathews, Josh
name: Pound, Adam
name: Wardell, Barry
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the linear metric perturbation to a Schwarzschild black hole generated by a spinning compact object, specialising to circular equatorial orbits with an (anti-)aligned spin vector. We derive a two-timescale expansion of the field equations, with an attendant waveform-generation framework, that includes all effects through first post-adiabatic order, and we use the Regge-Wheeler-Zerilli formalism in the frequency domain to generate waveforms that include the complete effect of the spin on the waveform phase. We perform the calculations using expansions at fixed orbital frequency, increasing the computational efficiency and simplifying the procedure compared to previous approaches. Finally, we provide the first fully relativistic, first-principles regularisation procedure for gauge invariant self-force quantities to linear order in spin. We use this procedure to produce the first strong-field, conservative self-force calculation including the spin of the secondary -- computing Detweiler's redshift invariant.
description: 27 pages, 6 figures
Amplification of optical Schrödinger cat states with implementation protocol based on frequency comb
Creators: name: Song, Hongbin
name: Zhang, Guofeng
name: Wang, Xiaoqiang
name: Yonezawa, Hidehiro
name: Fan, Kaiquan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We proposed and analyzed a scheme to generate large-size Schrödinger cat states based on linear operations of Fock states and squeezed vacuum states and conditional measurements. By conducting conditional measurements via photon number detectors, two unbalanced Schrödinger kitten states combined by a beam splitter can be amplified to a large-size cat state with the same parity. According to simulation results, two Schrödinger odd kitten states of $β=1.06$ and $β=1.11$ generated from one-photon-subtracted squeezed vacuum states of $-$3 dB, are amplified to an odd cat state of $β=1.73$ with a fidelity of $F=99\%$. A large-size Schrödinger odd cat state with $β=2.51$ and $F=97.30\%$ is predicted when the input squeezed vacuum states are increased to $-$5.91 dB. According to the analysis on the impacts of experimental imperfections in practice, Schrödinger odd cat states of $β>2$ are available. A feasible configuration based on a quantum frequency comb is developed to realize the large-size cat state generation scheme we proposed.
nuSQuIDS: A toolbox for neutrino propagation
Creators: name: Argüelles, Carlos A.
name: Salvado, Jordi
name: Weaver, Christopher N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Neutrino Simple Quantum Integro-Differential Solver (nuSQuIDS) is a C++ code based on SQuIDS that propagates an ensemble of neutrinos through given media. Neutrino oscillation calculations relevant to current and next-generation experiments are implemented. This includes coherent and non-coherent neutrino interactions in settings such as the Sun, Earth, or a vacuum. The code is designed to be accurate and flexible, while at the same time maintaining good performance. It has a modular design that allows the user to incorporate new physics in novel scenarios.
description: 37 pages of main text and code manual appendix, 4 figures in text, 1 table in the main text. Code can be found at: https://github.com/arguelles/nuSQuIDS
Apparent horizons of the Thakurta spacetime and the description of cosmological black holes
Creators: name: Kobakhidze, Archil
name: Picker, Zachary S. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the validity of the Thakurta metric to describe cosmological black holes by analysing the nature of its horizon. By adopting the preferred foliation of the Thakurta spacetime associated with the Kodama time, we demonstrate that the Thakurta horizon is indeed a future outer trapping horizon. Therefore, the respective observers see it as a cosmological black hole, contrary to some claims in the literature.
description: 4 pages
Higher-order valley vortices enabled by synchronized rotation in a photonic crystal
Creators: name: Zhou, R.
name: Lin, H.
name: Wu, Y.
name: Li, Z.
name: Yu, Z.
name: Liu, Y.
name: Xu, Dong-Hui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Synchronized rotation of unit cells in a periodic structure provides a novel design perspective for manipulation of band topology. We then design a two-dimensional version of higher-order topological insulators (HOTI), by such rotation in a triangular photonic lattice with $\mathcal{C}_3$ symmetry. This HOTI supports the hallmark zero-dimensional corner states and simultaneously the one-dimensional edge states. We also find that our photonic corner states carry chiral orbital angular momenta locked by valleys, whose wavefunctions are featured by the phase vortex (singularity) positioned at the maximal Wyckoff points. Moreover, when excited by a fired source with various frequencies, the valley topological states of both one-dimensional edges and zero-dimensional corners emerge simultaneously. Extendable to higher or synthetic dimensions, our work provides access to a chiral vortex platform for HOTI realisations in the THz photonic system.
description: 6 pages, 5 figures
Tau-functions for the Ablowitz--Ladik hierarchy: the matrix-resolvent method
Creators: name: Cafasso, Mattia
name: Yang, Di
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We extend the matrix-resolvent method for computing logarithmic derivatives of tau-functions to the Ablowitz--Ladik hierarchy. In particular, we derive a formula for the generating series of the logarithmic derivatives of an arbitrary tau-function in terms of matrix resolvents. As an application, we provide a way of computing certain integrals over the unitary group.
description: 15 pages