cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Determining the population properties of spinning black holes
Creators: name: Talbot, Colm
name: Thrane, Eric
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: There are at least two formation scenarios consistent with the first gravitational-wave observations of binary black hole mergers. In field models, black hole binaries are formed from stellar binaries that may undergo common envelope evolution. In dynamic models, black hole binaries are formed through capture events in globular clusters. Both classes of models are subject to significant theoretical uncertainties. Nonetheless, the conventional wisdom holds that the distribution of spin orientations of dynamically merging black holes is nearly isotropic while field-model black holes prefer to spin in alignment with the orbital angular momentum. We present a framework in which observations of black hole mergers can be used to measure ensemble properties of black hole spin such as the typical black hole spin misalignment. We show how to obtain constraints on population hyperparameters using minimal assumptions so that the results are not strongly dependent on the uncertain physics of formation models. These data-driven constraints will facilitate tests of theoretical models and help determine the formation history of binary black holes using information encoded in their observed spins. We demonstrate that the ensemble properties of binary detections can be used to search for and characterize the properties of two distinct populations of black hole mergers.
description: 10 pages, 5 figures, 1 table. Minor revisions, published in PRD
Childhood Development Trend and Caregiver Competence 15-Jul-2023 17-06-14(1).pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Childhood is a period of rapid development in every aspect of human functioning hence, the knowledge of the basic process by those who work with children can help identify, ameliorate or solve some of the behavioral problems of growing up. This has become necessary because theory has positioned and several studies have given credence to the fact that childhood experiences had long-term effects, which manifest as positive or negative behavior. Therefore, the basic knowledge of the ……
Feature
Creators: name: Jiang, Zhuoren
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460506
subject: Graph, social and multimedia data
classificationCode: 441012
subject: Sociology of inequalities

description: sample_feature_distribution.csvsample_feature_distribution.csv is the time-evolving demographic feature distributions of aware population in the sampled 100,000 user setFormatThe first column is the time for different overall aware pencetageThe second column is the gender distributionThe third column is the age distributionThe fourth column is the occupation distributionThe fifth column is the education distributionThe sixth column is the marital status distributionThe seventh column is the parenthood status distribution
The Augustin Center and The Sphere Packing Bound For Memoryless Channels
Creators: name: Nakiboğlu, Barış
Publisher: name: arXiv
Year: 2017
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: For any channel with a convex constraint set and finite Augustin capacity, existence of a unique Augustin center and associated Erven-Harremoes bound are established. Augustin-Legendre capacity, center, and radius are introduced and proved to be equal to the corresponding Renyi-Gallager entities. Sphere packing bounds with polynomial prefactors are derived for codes on two families of channels: (possibly non-stationary) memoryless channels with multiple additive cost constraints and stationary memoryless channels with convex constraints on the empirical distribution of the input codewords.
description: Accepted to ISIT 2017
The $d^{\ast}$(2380) dibaryon resonance width and decay branching ratios
Creators: name: Gal, Avraham
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Attempts to reproduce theoretically the relatively small width, $Γ_{d^{\ast}}=80\pm 10$ MeV, of the $I(J^P)=0(3^+)$ $d^{\ast}$(2380) dibaryon resonance established by the WASA-at-COSY Collaboration are discussed. The validity of associating the $d^{\ast}$(2380) in quark-based models primarily with a tightly bound $ΔΔ$ configuration is questioned. The $d^{\ast}$(2380) width and decay branching ratios into $NNππ$, $NNπ$ and $NN$ final states are studied within the Gal-Garcilazo hadronic model in which the $d^{\ast}$(2380) is a $πNΔ$ resonance embedded in the $NNππ$ continuum some 80 MeV below the $ΔΔ$ threshold. In particular, predictions are made for the branching ratios of the unobserved yet $d^{\ast}(2380)\to NNπ$ decays which are suppressed in a purely-$ΔΔ$ dibaryon model. Comments are also made on a possible connection of the ABC effect observed in the $pn\to d^{\ast}\to dπ^0π^0$ resonance reaction to the $d^{\ast}$(2380) dibaryon.
description: v1 -- 8 pages, 3 figures, 3 tables, submitted for publication; v2 -- one review section removed, 7 pages, 2 figures, 2 tables, Physics Letters B (in press)
Advective superdiffusion in superhydrophobic microchannels
Creators: name: Nizkaya, Tatiana V.
name: Asmolov, Evgeny S.
name: Vinogradova, Olga I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider pressure-driven flows in wide microchannels, and discuss how a transverse shear, generated by misaligned superhydrophobic walls, impacts cross-sectional spreading of Brownian particles. We show that such a transverse shear can induce an advective superdiffusion, which strongly enhances dispersion of particles compared to a normal diffusion, and that maximal cross-sectional spreading corresponds to a crossover between its subballistic and superballistic regimes. This allows us to argue that an advective superdiffusion can be used for boosting dispersion of particles at smaller Peclet numbers compared to known concepts of passive microfluidic mixing. This implies that our superdiffusion scenario allows one efficient mixing of much smaller particles or using much thinner microchannels than methods, which are currently being exploited.
description: 7 pages, 8 figures
Integrable Lambda Models And Chern-Simons Theories
Creators: name: Schmidtt, David M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this note we reveal a connection between the phase space of lambda models on $S^{1}\times \mathbb{R}$ and the phase space of double Chern-Simons theories on $D\times \mathbb{R}$ and explain in the process the origin of the non-ultralocality of the Maillet bracket, which emerges as a boundary algebra. In particular, this means that the (classical) $AdS_{5}\times S^{5}$ lambda model can be understood as a double Chern-Simons theory defined on the Lie superalgebra $\mathfrak{psu}(2,2|4)$ after a proper dependence of the spectral parameter is introduced. This offers a possibility for avoiding the use of the problematic non-ultralocal Poisson algebras that preclude the introduction of lattice regularizations and the application of the QISM to string sigma models. The utility of the equivalence at the quantum level is, however, still to be explored.
description: 27 pages. Published version
title: Quantum circuit and Qiskit implementaion of the recursive Bernstein-Vazirani algorithm
Creators: name: Zachmann, Rainer
Publisher: name: TU Wien
Year: 2023
Subjects: subject: recursive Fourier sampling
subject: quantum programming
subject: recursive Fourier sampling
subject: quantum programming

description: Der Quantenalgorithmus von Bernstein und Vazirani stellt einen Meilenstein in der Komplexitaetsforschung von Quantencomputern dar. Es konnte gezeigt werden dass Quantencomputer das Bernstein-Vazirani-Problem, auch bekannt als diskretes Fourier Sampling, schneller lösen können, als es mit klassischen Rechnern moeglich ist. In der nicht-rekursiven Basisvariante konnte eine lineare Verbesserung durch Quantencomputer gegenueber klassischen Algorithmen beschrieben werden. Darüber hinaus konnte mittels Rekursion eine superpolynomielle Verbesserung gezeigt werden, die Quantenalgorithmen eine maechtigere Komplexitaetsklasse als klassischer Programmierung zuordnet. Die rekursive Variante des Bernstein-Vazirani-Problems wird in dieser Arbeit neu formuliert und nach Problemgröße und Rekursionstiefe parametrisiert. Danach wird der Algorithmus sowohl in der stark typisierten Quantenprogrammiersprache Silq als auch in Qiskit, einer zeitgemäßen Bibliothek zur Quantenprogrammierung, implementiert. DasProgramm kann in maschinenlesbarer Form für einen Quantencomputer exportiert oder auf klassischen Rechnern emuliert werden. Damit können die Ergebnisse von Bernstein und Vazirani bezueglich der Komplexitaet prinzipiell auch auf Quantencomputern ueberprueft werden. In dieser Arbeit wird ein neuer Ansatz praesentiert, das rekursive Bernstein-Vazirani-Problem mit einem Kontrollargument zu formulieren. Mit dieser Formulierung wird die Implementierbarkeit des Algorithmus wesentlich verbessert.
description: The Bernstein–Vazirani quantum algorithm serves as an important milestone in the assessment of the computational power of quantum computers. Bernstein and Vazirani showed that the Bernstein–Vazirani problem, alias discrete Fourier sampling, could be solved faster by a quantum algorithm than by any classical formulation. While the non-recursive, base variant shows a linear improvement of the quantum algorithm over classical ones, a superpolynomial improvement could be achieved by applying recursion to the problem. This recursive Bernstein–Vazirani problem separates the complexity classes of quantum and classical computation. The recursive variation of theBernstein–Vazirani problem is reformulated and parametrised by problem size and recursion depth. It is then designed in the strongly typed quantum programming language Silq and also implemented in the state-of-the-art quantum library Qiskit. This program can be exported into machine-readable quantum assembly suitable for a quantum computeror emulated on classical computers. Using these results, the complexity results of Bernstein and Vazirani can in principle be verified on quantum hardware. We present a new variant of formulating the recursive problem using a control argument that greatly simplifies actual implementations.
Absorption and optimal plasmonic resonances for small ellipsoidal particles in lossy media
Creators: name: Dalarsson, Mariana
name: Nordebo, Sven
name: Sjöberg, Daniel
name: Bayford, Richard
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A new simplified formula is derived for the absorption cross section of small dielectric ellipsoidal particles embedded in lossy media. The new expression leads directly to a closed form solution for the optimal conjugate match with respect to the surrounding medium, i.e., the optimal permittivity of the ellipsoidal particle that maximizes the absorption at any given frequency. This defines the optimal plasmonic resonance for the ellipsoid. The optimal conjugate match represents a metamaterial in the sense that the corresponding optimal permittivity function may have negative real part (inductive properties), and can not in general be implemented as a passive material over a given bandwidth. A necessary and sufficient condition is derived for the feasibility of tuning the Drude model to the optimal conjugate match at a single frequency, and it is found that all the prolate spheroids and some of the (not too flat) oblate spheroids can be tuned into optimal plasmonic resonance at any desired center frequency. Numerical examples are given to illustrate the analysis. Except for the general understanding of plasmonic resonances in lossy media, it is also anticipated that the new results can be useful for feasibility studies with e.g., the radiotherapeutic hyperthermia based methods to treat cancer based on electrophoretic heating in gold nanoparticle suspensions using microwave radiation.
Low-energy modes of spin-imbalanced Fermi gases in BCS phase
Creators: name: Matera, F.
name: Wagner, M. F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The low-energy modes of a spin-imbalanced superfluid Fermi gas in the Bardeen-Cooper-Schrieffer (BCS) side are studied. The gas is assumed to be sufficiently dilute so that the pairing of atoms can be considered effective only in s-wave between fermions of different internal state. The order parameter at equilibrium is determined by the mean-field approximation, while the properties of the collective modes are calculated within a Gaussian approximation for the fluctuations of the order parameter. In particular we investigate the effects of asymmetry between the populations of the two different components and of temperature on the frequency and damping of collective modes. It is found that the temperature does not much affect the frequency and the damping of the modes, whereas an increase of the imbalance shifts the frequency toward lower values and enhances the damping sensitively. Besides the Bogoliubov-Anderson phonons, we observe modes at zero frequency for finite values of the wave-number. These modes indicate that an instability develops driving the system toward two separate phases, normal and superfluid.
description: 7 pages, 4 figures, submitted to European Physical Journal D for publication
Stokes paradox in electronic Fermi liquids
Creators: name: Lucas, Andrew
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The Stokes paradox is the statement that in a viscous two dimensional fluid, the "linear response" problem of fluid flow around an obstacle is ill-posed. We present a simple consequence of this paradox in the hydrodynamic regime of a Fermi liquid of electrons in two-dimensional metals. Using hydrodynamics and kinetic theory, we estimate the contribution of a single cylindrical obstacle to the global electrical resistance of a material, within linear response. Momentum relaxation, present in any realistic electron liquid, resolves the classical paradox. Nonetheless, this paradox imprints itself in the resistance, which can be parametrically larger than predicted by Ohmic transport theory. We find a remarkably rich set of behaviors, depending on whether or not the quasiparticle dynamics in the Fermi liquid should be treated as diffusive, hydrodynamic or ballistic on the length scale of the obstacle. We argue that all three types of behavior are observable in present day experiments.
description: 23+3 pages, 7+1 figures. v2: published version with expanded introduction
Production of Entanglement Entropy by Decoherence
Creators: name: Merkli, M.
name: Berman, G. P.
name: Sayre, R. T.
name: Wang, X.
name: Nesterov, A. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We examine the dynamics of entanglement entropy of all parts in an open system consisting of a two-level dimer interacting with an environment of oscillators. The dimer-environment interaction is almost energy conserving. We find the precise link between decoherence and production of entanglement entropy. We show that not all environment oscillators carry significant entanglement entropy and we identify the oscillator frequency regions which contribute to the production of entanglement entropy. Our results hold for arbitrary strengths of the dimer-environment interaction, and they are mathematically rigorous.
description: Manuscript somewhat shortened from Version 1. Title slightly changed
The effect of thermal misbalance on magnetohydrodynamic modes in coronal magnetic cylinders
Creators: name: Hejazi, S. M.
name: Van Doorsselaere, T.
name: Sadeghi, M.
name: Kolotkov, D. Y.
name: Hermans, J.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This study investigates the dispersion of magnetohydrodynamic waves influenced by thermal misbalance in a cylindrical configuration with a finite axial magnetic field within solar coronal plasmas. Specifically, it examines how thermal misbalance, characterized by two distinct timescales directly linked to the cooling and heating functions, influences the dispersion relation. This investigation is a key approach for understanding non-adiabatic effects on the behaviour of these waves. Our findings reveal that the effect of thermal misbalance on fast sausage and kink modes, consistent with previous studies on slabs, is small but slightly more pronounced than previously thought. The impact is smaller at long-wavelength limits but increases at shorter wavelengths, leading to higher damping rates. This minor effect on fast modes occurs despite the complex interaction of thermal misbalance terms within the dispersion relation, even at low-frequency limits defined by the characteristic timescales. Additionally, a very small amplification is observed, indicating a suppressed damping state for the long-wavelength fundamental fast kink mode. In contrast, slow magnetoacoustic modes are significantly affected by thermal misbalance, with the cusp frequency shifting slightly to lower values, which is significant for smaller longitudinal wavenumbers. This thermal misbalance likely accounts for the substantial attenuation observed in the propagation of slow magnetoacoustic waves within the solar atmosphere. The long-wavelength limit leads to an analytical expression that accurately describes the frequency shifts in slow modes due to misbalance, closely aligning with both numerical and observational results.
description: Accepted to be published in Astronomy and Astrophysics (A&A)
Precision Measurement of the W-Boson Mass: Theoretical Contributions and Uncertainties
Creators: name: Calame, Carlo Michel Carloni
name: Chiesa, Mauro
name: Martinez, Homero
name: Montagna, Guido
name: Nicrosini, Oreste
name: Piccinini, Fulvio
name: Vicini, Alessandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We perform a comprehensive analysis of electroweak, QED and mixed QCD-electroweak corrections underlying the precise measurement of the W-boson mass M_W at hadron colliders. By applying a template fitting technique, we detail the impact on M_W of next-to-leading order electroweak and QCD corrections, multiple photon emission, lepton pair radiation and factorizable QCD-electroweak contributions. As a by-product, we provide an up-to-date estimate of the main theoretical uncertainties of perturbative nature. Our results can serve as a guideline for the assessment of the theoretical systematics at the Tevatron and LHC and allow a more robust precision measurement of the W-boson mass at hadron colliders.
description: 51 pages, 10 figures and 16 tables. Minor corrections: new citations and reference to the svn revisions of the POWHEG code. Numerical results and conclusions unchanged
Advantages of Unfair Quantum Ground-State Sampling
Creators: name: Zhang, Brian Hu
name: Wagenbreth, Gene
name: Martin-Mayor, Victor
name: Hen, Itay
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The debate around the potential superiority of quantum annealers over their classical counterparts has been ongoing since the inception of the field by Kadowaki and Nishimori close to two decades ago. Recent technological breakthroughs in the field, which have led to the manufacture of experimental prototypes of quantum annealing optimizers with sizes approaching the practical regime, have reignited this discussion. However, the demonstration of quantum annealing speedups remains to this day an elusive albeit coveted goal. Here, we examine the power of quantum annealers to provide a different type of quantum enhancement of practical relevance, namely, their ability to serve as useful samplers from the ground-state manifolds of combinatorial optimization problems. We study, both numerically by simulating ideal stoquastic and non-stoquastic quantum annealing processes, and experimentally, using a commercially available quantum annealing processor, the ability of quantum annealers to sample the ground-states of spin glasses differently than classical thermal samplers. We demonstrate that i) quantum annealers in general sample the ground-state manifolds of spin glasses very differently than thermal optimizers, ii) the nature of the quantum fluctuations driving the annealing process has a decisive effect on the final distribution over ground-states, and iii) the experimental quantum annealer samples ground-state manifolds significantly differently than thermal and ideal quantum annealers. We illustrate how quantum annealers may serve as powerful tools when complementing standard sampling algorithms.
description: 13 pages, 11 figures
Accessing the topological susceptibility via the Gribov horizon
Creators: name: Dudal, D.
name: Felix, C. P.
name: Guimaraes, M. S.
name: Sorella, S. P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The topological susceptibility, $χ^4$, following the work of Witten and Veneziano, plays a key role in identifying the relative magnitude of the $η^{\prime}$ mass, the so-called $U(1)_{A}$ problem. A nonzero $χ^4$ is caused by the Veneziano ghost, the occurrence of an unphysical massless pole in the correlation function of the topological current. In a recent paper (Phys.Rev.Lett.114 (2015) 24, 242001), an explicit relationship between this Veneziano ghost and color confinement was proposed, by connecting the dynamics of the Veneziano ghost, and thus the topological susceptibility, with Gribov copies. However, the analysis is incompatible with BRST symmetry (Phys.Rev.D 93 (2016) no.8, 085010). In this paper, we investigate the topological susceptibility, $χ^4$, in SU(3) and SU(2) Euclidean Yang-Mills theory using an appropriate Padé approximation tool and a non-perturbative gluon propagator, within a BRST invariant framework and by taking into account Gribov copies in a general linear covariant gauge.
description: 17 pages, 4 figures. v2: corrected typos, new figures, improved style of presentation
Binding energy of homogeneous Bose gas
Creators: name: Nam, Phan Thành
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We compute the energy needed to add or remove one particle from a homogeneous system of $N$ bosons on a torus. We focus on the mean-field limit when $N$ becomes large and the strength of particle interactions is proportional to $N^{-1}$, which allows us to justify Bogoliubov's approximation.
description: 13 pages
A new class of integrable deformations of CFTs
Creators: name: Georgiou, George
name: Sfetsos, Konstantinos
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct a new class of integrable $σ$-models based on current algebra theories for a general semisimple group $G$ by utilizing a left-right asymmetric gauging. Their action can be thought of as the all-loop effective action of two independent WZW models for $G$ both at level $k$, perturbed by current bilinears mixing the different WZW models. A non-perturbative symmetry in the couplings parametric space is revealed. We perform the Hamiltonian analysis of the action and demonstrate integrability in several cases. We extend our construction to deformations of $G/H$ CFTs and show integrability when $G/H$ is a symmetric space. Our method resembles that used for constructing the $λ$-deformed integrable $σ$-models, but the results are distinct and novel.
description: 25 pages, minor typos corrected, published version
W2,2 Interior convergence for some class of elliptic anisotropic singular perturbation problems
Creators: name: Chokri, Ogabi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J15, 35B25

description: In this paper, we deal with anisotropic singular perturbations of some class of elliptic problem. We study the asymptotic behavior of the solution in certain second order pseudo Sobolev space.
description: some changes: title, some additions.., the results and the arguments are still the same
On the monoid of monotone injective partial selfmaps of $\mathbb{N}^{2}_{\leqslant}$ with cofinite domains and images, II
Creators: name: Gutik, Oleg
name: Pozdniakova, Inna
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M20, 20M18

description: Let $\mathbb{N}^{2}_{\leqslant}$ be the set $\mathbb{N}^{2}$ with the partial order defined as the product of usual order $\leq$ on the set of positive integers $\mathbb{N}$. We study the semigroup $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})$ of monotone injective partial selfmaps of $\mathbb{N}^{2}_{\leqslant}$ having cofinite domain and image. We describe the natural partial order on $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})$ and show that it coincides with the natural partial order which is induced from symmetric inverse monoid $\mathscr{I}_{\mathbb{N}\times\mathbb{N}}$ onto $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})$. We proved that the semigroup $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})$ is isomorphic to the semidirect product $\mathscr{P\!O}\!_{\infty}^{\,+}(\mathbb{N}^2_{\leqslant})\rtimes \mathbb{Z}_2$ of the monoid $\mathscr{P\!O}\!_{\infty}^{\,+}(\mathbb{N}^2_{\leqslant})$ of orientation-preserving monotone injective partial selfmaps of $\mathbb{N}^{2}_{\leqslant}$ with cofinite domains and images by the cyclic group $\mathbb{Z}_2$ of the order two. Also we describe the congruence $σ$ on $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})$ which is generated by the natural order $\preccurlyeq$ on the semigroup $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})$. We prove that the quotient semigroup $\mathscr{P\!O}\!_{\infty}^{\,+}(\mathbb{N}^2_{\leqslant})/σ$ is isomorphic to the free commutative monoid $\mathfrak{AM}_ω$ over an infinite countable set and show that the quotient semigroup $\mathscr{P\!O}\!_{\infty}(\mathbb{N}^2_{\leqslant})/σ$ is isomorphic to the semidirect product of the free commutative monoid $\mathfrak{AM}_ω$ by $\mathbb{Z}_2$.
description: 15 pages. arXiv admin note: text overlap with arXiv:1602.06593
Enhancing power system stability in wind-integrated networks through coordinated fuzzy logic control of PSS and POD for sustainable energy futures
Creators: name: Bhukya, Jawaharlal
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Mental Health
subject: Computational Biology

description: In the face of challenges posed by increasing wind power integration, penetrations, SG replacement with Wind Farm (WF), and significant disturbances and their impact on small signal and transient stability. This paper presents a novel solution employing coordinated control of Power System Stabilisers (PSS) and Power Oscillation Dampers (POD). The stochastic nature of wind power and nonlinear wind speed behaviour creates complexities and is exacerbated by severe disturbances. Traditional PSS and POD designs struggle with these non-linearities. An intelligent coordinated control strategy based on a Fuzzy Logic Controller (FLC) is proposed to address this issue. The FLC synchronises and coordinates PSS and POD, enhancing stability by dampening Low-Frequency Oscillations (LFOs) and mitigating undamped fluctuations even under extreme conditions. Sensitivity analysis identifies key LFOs affecting stability, enabling optimal control gain selection. RT-LAB experimental platform on the IEEE-9 bus system validates the approach, showcasing superior performance compared to individual methods. The results underscore the robustness and reliability of FLC coordination, ensuring enhanced system stability in practical applications.
Are star formation rates of galaxies bimodal?
Creators: name: Feldmann, Robert
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Star formation rate (SFR) distributions of galaxies are often assumed to be bimodal with modes corresponding to star-forming and quiescent galaxies, respectively. Both classes of galaxies are typically studied separately and SFR distributions of star-forming galaxies are commonly modelled as lognormals. Using both observational data and results from numerical simulations, I argue that this division into star-forming and quiescent galaxies is unnecessary from a theoretical point of view and that the SFR distributions of the whole population can be well fit by zero-inflated negative binomial distributions. This family of distributions has 3 parameters that determine the average SFR of the galaxies in the sample, the scatter relative to the star-forming sequence, and the fraction of galaxies with zero SFRs, respectively. The proposed distributions naturally account for (i) the discrete nature of star formation, (ii) the presence of 'dead' galaxies with zero SFRs, and (iii) asymmetric scatter. Excluding 'dead' galaxies, the distribution of log SFR is unimodal with a peak at the star forming sequence and an extended tail towards low SFRs. However, uncertainties and biases in the SFR measurements can create the appearance of a bimodal distribution.
description: 5 pages, 3 figures, accepted for publication in MNRAS Letters, proof corrected
E. Zahn, Trier
Creators: name: Laufner, Richard
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2023

description: Rezension zu: E. Zahn, Trier. Aufnahmen von Michael Jeiter. Deutscher Kunstverlag GmbH. München—Berlin 1976, 50 Seiten. 68 Bildtafeln, 3 Farbtafeln, 2 Stadtpläne
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 39 (1976): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Solving the quantum many-body problem via correlations measured with a momentum microscope
Creators: name: Hodgman, Sean. S.
name: Khakimov, Roman. I.
name: Lewis-Swan, Robert. J.
name: Truscott, Andrew. G.
name: Kheruntsyan, Karen. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In quantum many-body theory, all physical observables are described in terms of correlation functions between particle creation/annihilation operators. Measurement of such correlation functions can therefore be regarded as an operational solution to the quantum many-body problem. Here we demonstrate this paradigm by measuring multi-particle momentum correlations up to third order between ultracold helium atoms in an s-wave scattering halo of colliding Bose-Einstein condensates, using a quantum many-body momentum microscope. Our measurements allow us to extract a key building block of all higher-order correlations in this system|the pairing field amplitude. In addition, we demonstrate a record violation of the classical Cauchy-Schwarz inequality for correlated atom pairs and triples. Measuring multi-particle momentum correlations could provide new insights into effects such as unconventional superconductivity and many-body localisation.
description: Final published version, 15 pages, 8 figures and Supplemental Material
Technical drawings of the simultaneous multi-view light-sheet microscope with ablation system
Creators: name: Keller, Philipp
Publisher: name: Janelia Research Campus
Year: 2019
Subjects: Neuroscience

description: Please contact innovation@janelia.hhmi.org or visit https://www.janelia.org/open-science/simview in order to obtain free access to this archive. The archive contains the blueprint of our microscope, including the optical modules for high-speed light-sheet imaging and for laser ablation, as well as technical drawings of all custom parts.
J. U. Fechner, Erfahrene und erfundene Landschaft. Aurelio de’ Giorgio Bertòlas Deutschlandbild und die Begründung der Rheinromantik
Creators: name: Zahn, Eberhard
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2023

description: Rezension zu: J. U. Fechner, Erfahrene und erfundene Landschaft. Aurelio de’ Giorgio Bertòlas Deutschlandbild und die Begründung der Rheinromantik. Abhandlungen der Rheinisch-Westfälischen Akademie der Wissenschaften Band 52, Westdeutscher Verlag, Opladen 1974, 360 Seiten und 5 Abb.
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 39 (1976): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Spectrum of the Nuclear Environment for GaAs Spin Qubits
Creators: name: Malinowski, Filip K.
name: Martins, Frederico
name: Cywiński, Łukasz
name: Rudner, Mark S.
name: Nissen, Peter D.
name: Fallahi, Saeed
name: Gardner, Geoffrey C.
name: Manfra, Michael J.
name: Marcus, Charles M.
name: Kuemmeth, Ferdinand
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using a singlet-triplet spin qubit as a sensitive spectrometer of the GaAs nuclear spin bath, we demonstrate that the spectrum of Overhauser noise agrees with a classical spin diffusion model over six orders of magnitude in frequency, from 1 mHz to 1 kHz, is flat below 10 mHz, and falls as $1/f^2$ for frequency $f \! \gtrsim \! 1$ Hz. Increasing the applied magnetic field from 0.1 T to 0.75 T suppresses electron-mediated spin diffusion, which decreases spectral content in the $1/f^2$ region and lowers the saturation frequency, each by an order of magnitude, consistent with a numerical model. Spectral content at megahertz frequencies is accessed using dynamical decoupling, which shows a crossover from the few-pulse regime ($\lesssim \! 16$ $π$-pulses), where transverse Overhauser fluctuations dominate dephasing, to the many-pulse regime ($\gtrsim \! 32$ $π$-pulses), where longitudinal Overhauser fluctuations with a $1/f$ spectrum dominate.
description: 6 pages, 4 figures, 8 pages of supplementary material, 5 supplementary figures
Data for A Connectome of the Adult Drosophila Central Brain v1.0
Creators: name: Xu, C. Shan
name: Scheffer, Louis
name: Plaza, Stephen
name: Januszewski, Michal
name: Lu, Zhiyuan
name: Takemura, Shin-Ya
name: Hayworth, Kenneth
name: Shinomiya, Kazunori
name: Maitin-Shepard, Jeremy
name: Bogovic, John
name: Hubbard, Philip
name: Kainmueller, Dagmar
name: Katz, William
name: Li, Peter H.
name: Neubarth, Nicole
name: Schlegel, Philipp
name: Neace, Erika R.
name: Knecht, Christopher J.
name: Alvarado, Chelsea X.
name: Bailey, Dennis
name: Ballinger, Samantha
name: Borycz, Jolanta A.
name: Canino, Brandon
name: Cook, Michael
name: Duclos, Octave
name: Eubanks, Bryon
name: Finley, Samantha
name: Forknall, Nora
name: Francis, Audrey
name: Hopkins, Gary Patrick
name: Joyce, Emily M.
name: Sungjin Kim
name: Kirk, Nicole A.
name: Kovalyak, Julie
name: Lauchie, Shirley A.
name: Lohff, Alanna
name: Maldonado, Charli
name: Manley, Emily A.
name: McLin, Sari
name: Mooney, Caroline
name: Ndama, Miatta
name: Omotara Ogundeyi
name: Okeoma, Nneoma
name: Ordish, Christopher
name: Padilla, Nicholas
name: Patrick, Christopher
name: Phillips, Elliott E.
name: Phillips, Emily M.
name: Rampally, Neha
name: Ribeiro, Caitlin
name: Robertson, Madelaine K.
name: Rymer, Jon Thomson
name: Ryan, Sean M.
name: Sammons, Megan
name: Scott, Anne K.
name: Scott, Ashley L.
name: Shinomiya, Aya
name: Smith, Claire
name: Smith, Natalie L.
name: Sobeski, Margaret A.
name: Suleiman, Alia
name: Takemura, Satoko
name: Talebi, Iris
name: Tarnogorska, Dorota
name: Tenshaw, Emily
name: Tokhi, Temour
name: Walsh, John J.
name: Horne, Jane Anne
name: Parekh, Ruchi
name: Rivlin, Patricia K.
name: Jayaraman, Vivek
name: Meinertzhagen, Ian
name: Rubin, Gerald M.
name: Jain, Viren
Publisher: name: Janelia Research Campus
Year: 2020
Subjects: subject: Neuroscience
subject: 60807 Animal Structure and Function
subject: FOS: Biological sciences

description: This is data generated by the FlyEM project at Janelia and our collaborators at Google. It contains the connectome (neurons and their connections) of a large fractionof the brain of the fruit fly Drosophila melanogaster, and the means to access this connectome.
This data is associated with the paper, BIORXIV/2020/911859, "A Connectome of the Adult Drosophila Central Brain" by C. Shan Xu, et al. published 22 January 2020. This is version 1.0 of the data; improved versions are expected to become available as research continues.

The data can be found at:
https://www.janelia.org/project-team/flyem/hemibrain
Groundstate fidelity phase diagram of the fully anisotropic two-leg spin-1/2 XXZ ladder
Creators: name: Li, Sheng-Hao
name: Shi, Qian-Qian
name: Batchelor, Murray T.
name: Zhou, Huan-Qiang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The fully anisotropic two-leg spin-1/2 $XXZ$ ladder model is studied in terms of an algorithm based on the tensor network representation of quantum many-body states as an adaptation of projected entangled pair states to the geometry of translationally invariant infinite-size quantum spin ladders. The tensor network algorithm provides an effective method to generate the groundstate wave function, which allows computation of the groundstate fidelity per lattice site, a universal marker to detect phase transitions in quantum many-body systems. The groundstate fidelity is used in conjunction with local order and string order parameters to systematically map out the groundstate phase diagram of the ladder model. The phase diagram exhibits a rich diversity of quantum phases. These are the ferromagnetic, stripe ferromagnetic, rung singlet, rung triplet, N$\rm \acute{e}$el, stripe N$\rm \acute{e}$el and Haldane phases, along with the two $XY$ phases $XY1$ and $XY2$.
description: 23 pages, 15 figures. Revised version with additional text and figures. New Format
Barbara Purbs-Hensel, Verschwundene Renaissance-Schlösser in Nassau-Saarbrücken
Creators: name: Zahn, Eberhard
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2023

description: Rezension zu: Barbara Purbs-Hensel, Verschwundene Renaissance-Schlösser in Nassau-Saarbrücken. Veröffentl. des Instituts fiir Landeskunde des Saarlandes Band 24, Saarbrücken 1975. IX und 223 Seiten mit 68 Figuren im Text und 106 Abb. auf Tafeln
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 39 (1976): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Data for A Connectome of the Adult Drosophila Central Brain v1.0
Creators: name: Xu, C. Shan
name: Scheffer, Louis
name: Plaza, Stephen
name: Januszewski, Michal
name: Lu, Zhiyuan
name: Takemura, Shin-Ya
name: Hayworth, Kenneth
name: Shinomiya, Kazunori
name: Maitin-Shepard, Jeremy
name: Bogovic, John
name: Hubbard, Philip
name: Kainmueller, Dagmar
name: Katz, William
name: Li, Peter H.
name: Neubarth, Nicole
name: Schlegel, Philipp
name: Neace, Erika R.
name: Knecht, Christopher J.
name: Alvarado, Chelsea X.
Publisher: name: Janelia Research Campus
Year: 2020
Subjects: subject: Neuroscience
subject: 60807 Animal Structure and Function
subject: FOS: Biological sciences

description: This is data generated by the FlyEM project at Janelia and our collaborators at Google. It contains the connectome (neurons and their connections) of a large fractionof the brain of the fruit fly Drosophila melanogaster, and the means to access this connectome.
This data is associated with the paper, BIORXIV/2020/911859, "A Connectome of the Adult Drosophila Central Brain" by C. Shan Xu, et al. published 22 January 2020. This is version 1.0 of the data; improved versions are expected to become available as research continues.

The data can be found at:
https://www.janelia.org/project-team/flyem/hemibrain
S. Gohr, Der Kult des Künstlers und der Kunst im 9. Jahrhundert. Zum Bildtyp des Hommage
Creators: name: Zahn, Eberhard
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2023

description: Rezension zu: S. Gohr, Der Kult des Künstlers und der Kunst im 9. Jahrhundert. Zum Bildtyp des Hommage. Dissertationen zur Kunstgeschichte 1, Köln—Wien 1975. VIII und 265 Seiten
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 39 (1976): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Breakdown of traditional many-body theories for correlated electrons
Creators: name: Gunnarsson, O.
name: Rohringer, G.
name: Schäfer, T.
name: Sangiovanni, G.
name: Toschi, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Starting from the (Hubbard) model of an atom, we demonstrate that the uniqueness of the mapping from the interacting to the noninteracting Green's function, $G\to G_0$, is strongly violated, by providing numerous explicit examples of different $G_0$ leading to the same physical $G$. We argue that there are indeed infinitely many such $G_0$, with numerous crossings with the physical solution. We show that this rich functional structure is directly related to the divergence of certain classes of (irreducible vertex) diagrams, with important consequences for traditional many-body physics based on diagrammatic expansions. Physically, we ascribe the onset of these highly non-perturbative manifestations to the progressive suppression of the charge susceptibility induced by the formation of local magnetic moments and/or RVB states in strongly correlated electron systems.
description: 5 pages, 3 figures
V. Konerding, "Die Passagenkirche". Ein Bautyp der romanischen Baukunst in Frankreich
Creators: name: Zahn, Eberhard
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2023

description: Rezension zu: V. Konerding, "Die Passagenkirche". Ein Bautyp der romanischen Baukunst in Frankreich. Beiträge zur Kunstgeschichte Band 12. Berlin—New York 1976. 116 Seiten mit 22 Figuren im Text und 111 Abb. auf Tafeln
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 39 (1976): Trierer Zeitschrift : für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
Capacity building of caregivers- Policy implementation in a dynamic society 15-Jul-2023 14-15-36.pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Educators and caregivers are powerful agents of change for delivering the educational response to sustainable development. But for them to help usher in the transition to a dynamic society, they must first acquire the necessary knowledge, skills, attitudes and values. To be able to deliver tangible result in this dynamic society, they must also develop the requisite motivation and commitment. This article takes a broad view at capacity...
Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules
Creators: name: Cherepanov, Igor N.
name: Lemeshko, Mikhail
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The formation of vortices is usually considered to be the main mechanism of angular momentum disposal in superfluids. Recently, it was predicted that a superfluid can acquire angular momentum via an alternative, microscopic route -- namely, through interaction with rotating impurities, forming so-called `angulon quasiparticles' [Phys. Rev. Lett. 114, 203001 (2015)]. The angulon instabilities correspond to transfer of a small number of angular momentum quanta from the impurity to the superfluid, as opposed to vortex instabilities, where angular momentum is quantized in units of $\hbar$ per atom. Furthermore, since conventional impurities (such as molecules) represent three-dimensional (3D) rotors, the angular momentum transferred is intrinsically 3D as well, as opposed to a merely planar rotation which is inherent to vortices. Herein we show that the angulon theory can explain the anomalous broadening of the spectroscopic lines observed for CH$_3$ and NH$_3$ molecules in superfluid helium nanodroplets, thereby providing a fingerprint of the emerging angulon instabilities in experiment.
description: 7 pages + supplement
Primordial black hole and wormhole formation by domain walls
Creators: name: Deng, Heling
name: Garriga, Jaume
name: Vilenkin, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In theories with a broken discrete symmetry, Hubble sized spherical domain walls may spontaneously nucleate during inflation. These objects are subsequently stretched by the inflationary expansion, resulting in a broad distribution of sizes. The fate of the walls after inflation depends on their radius. Walls smaller than a critical radius fall within the cosmological horizon early on and collapse due to their own tension, forming ordinary black holes. But if a wall is large enough, its repulsive gravitational field becomes dominant much before the wall can fall within the cosmological horizon. In this "supercritical" case, a wormhole throat develops, connecting the ambient exterior FRW universe with an interior baby universe, where the exponential growth of the wall radius takes place. The wormhole pinches off in a time-scale comparable to its light-crossing time, and black holes are formed at its two mouths. As discussed in previous work, the resulting black hole population has a wide distribution of masses and can have significant astrophysical effects. The mechanism of black hole formation has been previously studied for a dust-dominated universe. Here we investigate the case of a radiation-dominated universe, which is more relevant cosmologically, by using numerical simulations in order to find the initial mass of a black hole as a function of the wall size at the end of inflation. For large supercritical domain walls, this mass nearly saturates the upper bound according to which the black hole cannot be larger than the cosmological horizon. We also find that the subsequent accretion of radiation satisfies a scaling relation, resulting in a mass increase by about a factor of 2.