cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
First visual orbit for the prototypical colliding-wind binary WR 140
Creators: name: Monnier, J. D.
name: Zhao, Ming
name: Pedretti, E.
name: Millan-Gabet, R.
name: Berger, J. P.
name: Traub, W.
name: Schloerb, F. P.
name: Brummelaar, T. ten
name: McAlister, H.
name: Ridgway, S.
name: Sturmann, L.
name: Sturmann, J.
name: Turner, N.
name: Baron, F.
name: Kraus, S.
name: Tannirkulam, A.
name: Williams, P. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Wolf-Rayet stars represent one of the final stages of massive stellar evolution. Relatively little is known about this short-lived phase and we currently lack reliable mass, distance, and binarity determinations for a representative sample. Here we report the first visual orbit for WR 140(=HD193793), a WC7+O5 binary system known for its periodic dust production episodes triggered by intense colliding winds near periastron passage. The IOTA and CHARA interferometers resolved the pair of stars in each year from 2003--2009, covering most of the highly-eccentric, 7.9 year orbit. Combining our results with the recent improved double-line spectroscopic orbit of Fahed et al. (2011), we find the WR 140 system is located at a distance of 1.67 +/- 0.03 kpc, composed of a WR star with M_WR = 14.9 +/- 0.5 Msun and an O star with M_O = 35.9 +/- 1.3 Msun. Our precision orbit yields key parameters with uncertainties times 6 smaller than previous work and paves the way for detailed modeling of the system. Our newly measured flux ratios at the near-infrared H and Ks bands allow an SED decomposition and analysis of the component evolutionary states.
description: Complete OIFITS dataset included via Data Conservancy Project
Femtogram Doubly Clamped Nanomechanical Resonators Embedded in a High-Q Two-Dimensional Photonic Crystal Nanocavity
Creators: name: Sun, Xiankai
name: Zheng, Jiangjun
name: Poot, Menno
name: Wong, Chee Wei
name: Tang, Hong X.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate a new optomechanical device system which allows highly efficient transduction of femtogram nanobeam resonators. Doubly clamped nanomechanical resonators with mass as small as 25 fg are embedded in a high-finesse two-dimensional photonic crystal nanocavity. Optical transduction of the fundamental flexural mode around 1 GHz was performed at room temperature and ambient conditions, with an observed displacement sensitivity of 0.94 fm/Hz^(1/2). Comparison of measurements from symmetric and asymmetric double-beam devices reveals hybridization of the mechanical modes where the structural symmetry is shown to be the key to obtain a high mechanical quality factor. Our novel configuration opens the way for a new category of "NEMS-in-cavity" devices based on optomechanical interaction at the nanoscale.
description: Nano Lett. 2012
Zuschriften an die Redaktion
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 23 Nr. 12 (1970): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Host Galaxy Properties of the Swift BAT Ultra Hard X-ray Selected AGN
Creators: name: Koss, Michael
name: Mushotzky, Richard
name: Veilleux, Sylvain
name: Winter, Lisa M.
name: Baumgartner, Wayne
name: Tueller, Jack
name: Gehrels, Neil
name: Valencic, Lynne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have assembled the largest sample of ultra hard X-ray selected (14-195 keV) AGN with host galaxy optical data to date, with 185 nearby (z<0.05), moderate luminosity AGN from the Swift BAT sample. The BAT AGN host galaxies have intermediate optical colors (u-r and g-r) that are bluer than a comparison sample of inactive galaxies and optically selected AGN from the Sloan Digital Sky Survey (SDSS) which are chosen to have the same stellar mass. Based on morphological classifications from the RC3 and the Galaxy Zoo, the bluer colors of BAT AGN are mainly due to a higher fraction of mergers and massive spirals than in the comparison samples. BAT AGN in massive galaxies (log M_*>10.5) have a 5 to 10 times higher rate of spiral morphologies than in SDSS AGN or inactive galaxies. We also see enhanced far-IR emission in BAT AGN suggestive of higher levels of star formation compared to the comparison samples. BAT AGN are preferentially found in the most massive host galaxies with high concentration indexes indicative of large bulge-to-disk ratios and large supermassive black holes. The narrow-line BAT AGN have similar intrinsic luminosities as the SDSS NL Seyferts based on measurements of [O III]. There is also a correlation between the stellar mass and X-ray emission. The BAT AGN in mergers have bluer colors and greater ultra hard X-ray emission compared to the BAT sample as whole. In agreement with the Unified Model of AGN, and the relatively unbiased nature of the BAT sources, the host galaxy colors and morphologies are independent of measures of obscuration such as X-ray column density or Seyfert type. The high fraction of massive spiral galaxies and galaxy mergers in BAT AGN suggest that host galaxy morphology is related to the activation and fueling of local AGN.
description: 30 pages, 30 figures, accepted for publication in ApJ
Rise and fall of Yu-Shiba-Rusinov bound-states in charge conserving $s$-wave one-dimensional superconductors
Creators: name: Pasnoori, Parameshwar R.
name: Andrei, Natan
name: Rylands, Colin
name: Azaria, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We re-examine the problem of a magnetic impurity coupled to a superconductor focusing on the role of quantum fluctuations. We study in detail, a system that consists of a one-dimensional charge conserving spin-singlet superconductor coupled to a boundary magnetic impurity. Our main finding is that quantum fluctuations lead to the destruction of Yu-Shiba-Rusinov (YSR) intra-gap bound-states in all but a narrow region of the phase diagram. We carry out our analysis in three stages, increasing the role of the quantum fluctuations at each stage. First we consider the limit of a classical impurity and study the bulk semiclassically, finding YSR states throughout the phase diagram, a situation similar to conventional BCS superconductors. In the second stage, we reintroduce quantum fluctuations in the bulk and find that the YSR state is suppressed over half of the phase diagram, existing only around the quantum critical point separating the unscreened and the partially screened phases. In the final stage we solve exactly the full interacting model with arbitrary coupling constants using Bethe Ansatz. We find that including both the quantum fluctuating bulk and quantum impurity destabilizes the YSR state over most of the phase diagram allowing it to exist only in a small region, the YSR regime, between a Kondo-screened and an unscreened regime. Within the YSR regime a first order phase transition occurs between a spin singlet and doublet ground state. We also find that for large enough impurity spin exchange interaction a renormalized Kondo-screened regime is established. In this regime, not found for BCS superconductors, there is no YSR state and a renormalized Kondo temperature scale is generated.
Barthel, Waldemar und Atzendeck, Carl. Handlexikon der deutschen Vorgeschichte
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2020

description: Rezension zu: Barthel, Waldemar und Atzendeck, Carl. Handlexikon der deutschen Vorgeschichte. 8°, 382 S. mit 600 Abbildungen im Text. München 1936. W. Kürzel
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 10 (1936): Nachrichten aus Niedersachsens Urgeschichte
Lechler, Jörg. 5000 Jahre Deutschland. Germanisches Leben in 620 Bildern
Creators: name: Asmus, Wolfgang-Dietrich
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2020

description: Rezension zu: Lechler, Jörg. 5000 Jahre Deutschland. Germanisches Leben in 620 Bildern. 213 Seiten. Leipzig 1936. Verlag Curt Kabitzsch
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 10 (1936): Nachrichten aus Niedersachsens Urgeschichte
Nearly Optimal Quantum Algorithm for Estimating Multiple Expectation Values
Creators: name: Huggins, William J.
name: Wan, Kianna
name: McClean, Jarrod
name: O'Brien, Thomas E.
name: Wiebe, Nathan
name: Babbush, Ryan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many quantum algorithms involve the evaluation of expectation values. Optimal strategies for estimating a single expectation value are known, requiring a number of state preparations that scales with the target error $\varepsilon$ as $\mathcal{O}(1/\varepsilon)$. In this paper, we address the task of estimating the expectation values of $M$ different observables, each to within additive error $\varepsilon$, with the same $1/\varepsilon$ dependence. We describe an approach that leverages Gilyén et al.'s quantum gradient estimation algorithm to achieve $\mathcal{O}(\sqrt{M}/\varepsilon)$ scaling up to logarithmic factors, regardless of the commutation properties of the $M$ observables. We prove that this scaling is worst-case optimal in the high-precision regime if the state preparation is treated as a black box, even when the operators are mutually commuting. We highlight the flexibility of our approach by presenting several generalizations, including a strategy for accelerating the estimation of a collection of dynamic correlation functions.
Optical Variability and Colour Behaviour of 3C 345
Creators: name: Wu, Jianghua
name: Xu, Zhou
name: Ma, Jun
name: Jiang, Zhaoji
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The colour behaviour of blazars is a subject of much debate. One argument is that the BL Lac objects show bluer-when-brighter chromatism while the flat-spectrum radio quasars (FSRQs) display redder-when-brighter trend. Base on a 3.5-year three-colour monitoring programme, we studied the optical variability and colour behaviour of one FSRQ, 3C 345. There is at least one outburst in this period. The overall variation amplitude is 2.640 mags in the $i$ band. Intra-night variability was observed on two nights. The bluer-when-brighter and redder-when-brighter chromatisms were simultaneously observed in this object when using different pairs of passbands to compute the colours. The bluer-when-brighter chromatism is a shared property with the BL Lacs, while the redder-when-brighter trend is likely due to two less variable emission features, the Mg\,{\sc ii} line and the blue bump, at short wavelengths. With numerical simulations, we show that some other strong but less variable emission lines in the spectrum of FSRQs may also significantly alter their colour behaviour. Then the colour behaviour of an FSRQ is linked not only to the emission process in the relativistic jet, but also to the redshift, the passbands used for computing the colour and the strengths of the less variable emission features relative to the strength of the non-thermal continuum.
description: 9 pages, 9 figures, Accepted by MNRAS
ACT - Gender Equality Audit and Monitoring (GEAM) - Word Questionnaire
Creators: name: Aldercotte, Amanda
name: Caprile, Maria
name: Guyan, Kevin
name: Müller, Jörg
name: Yanes, Sergi
Publisher: name: Zenodo
Year: 2021

description: The Gender Equality Audit and Monitoring (GEAM) survey has been developed by research teams from the UK (Advance HE) and Spain (Notus and Universitat Oberta de Catalunya). It provides a comprehensive, transferable and transnational survey for higher education and research organisations that wish to undertake an audit of gender equality among academic, technical and support staff. Ideally it is launched during the initial stages of a Gender Equality Plan to understand better the specific challenges faced by each institution from the perspective of its employees. As such it complements other types of data collected for example from Human Resource departments on the representation of women and men across different staff categories and salary brackets. This file contains the Word version of the GEAM questionnaire. The word file is mainly for reference purposes. Please consult the main GEAM website: https://geam.act-on-gender.eu for access to related documentation, other language versions, and access to the online LimeSurvey version.
Reichardt, Konstantin. Runenkunde
Creators: name: Jacob-Friesen, Karl Hermann
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2020

description: Rezension zu: Reichardt, Konstantin. Runenkunde. 8°, 126 Seiten mit 41 Abbildungen. Jena 1936. Verlag Eugen Diederichs
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 10 (1936): Nachrichten aus Niedersachsens Urgeschichte
Actinide Topological Insulator Materials with Strong Interaction
Creators: name: Zhang, Xiao
name: Zhang, Haijun
name: Felser, Claudia
name: Zhang, Shou-Cheng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Topological band insulators have recently been discovered in spin-orbit coupled two and three dimensional systems. In this work, we theoretically predict a class of topological Mott insulators where interaction effects play a dominant role. In actinide elements, simple rocksalt compounds formed by Pu and Am lie on the boundary of metal to insulator transition. We show that interaction drives a quantum phase transition to a topological Mott insulator phase with a single Dirac cone on the surface.
Entanglement transitions in the quantum Ising chain: A comparison between different unravelings of the same Lindbladian
Creators: name: Piccitto, Giulia
name: Russomanno, Angelo
name: Rossini, Davide
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamics of entanglement in the quantum Ising chain with dephasing dissipation in a Lindblad master equation form. We consider two unravelings which preserve the Gaussian form of the state, allowing to address large system sizes. The first unraveling gives rise to a quantum-state-diffusion dynamics, while the second one describes a specific form of quantum-jump evolution, suitably constructed to preserve Gaussianity. In the first case we find a crossover from area-law to logarithm-law entanglement scaling and draw the related phase diagram. In the second case we only find logarithm-law scaling, remarking the different entanglement behavior for different unravelings of the same Lindblad equation. Finally, we compare these outcomes with the predictions of a non-Hermitian Hamiltonian evolution, finding conflicting results.
description: 15 pages, 9 figures. Mistakes in Eq. D5, Fig. 5, Fig. 6 corrected
Manipulating ultracold atoms with a reconfigurable nanomagnetic system of domain walls
Creators: name: West, Adam D.
name: Weatherill, Kevin J.
name: Hayward, Thomas J.
name: Fry, Paul W.
name: Schrefl, Thomas
name: Gibbs, Mike R. J.
name: Adams, Charles S.
name: Allwood, Dan A.
name: Hughes, Ifan G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The divide between the realms of atomic-scale quantum particles and lithographically-defined nanostructures is rapidly being bridged. Hybrid quantum systems comprising ultracold gas-phase atoms and substrate-bound devices already offer exciting prospects for quantum sensors, quantum information and quantum control. Ideally, such devices should be scalable, versatile and support quantum interactions with long coherence times. Fulfilling these criteria is extremely challenging as it demands a stable and tractable interface between two disparate regimes. Here we demonstrate an architecture for atomic control based on domain walls (DWs) in planar magnetic nanowires that provides a tunable atomic interaction, manifested experimentally as the reflection of ultracold atoms from a nanowire array. We exploit the magnetic reconfigurability of the nanowires to quickly and remotely tune the interaction with high reliability. This proof-of-principle study shows the practicability of more elaborate atom chips based on magnetic nanowires being used to perform atom optics on the nanometre scale.
description: 4 pages, 4 figures
Nachruf Prof. Dr. Dr. Günter Wegner
Creators: name: Bärenfänger, Rolf
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2020

description: -
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 86 (2017): Nachrichten aus Niedersachsens Urgeschichte
Tri-bimaximal-Cabibbo Mixing
Creators: name: King, S. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent measurements of the lepton mixing angle $θ_{13}$ by the Daya Bay and RENO reactor experiments are consistent with the relationship $θ_{13}\approx θ_C/\sqrt{2}$ where $ θ_C$ is the Cabibbo angle. We propose Tri-bimaximal-Cabibbo (TBC) mixing, in which $\sin θ_{13}= \sin θ_C/\sqrt{2}$, $\sin θ_{23}= 1/\sqrt{2}$ and $\sin θ_{12}= 1/\sqrt{3}$. We show that TBC mixing may arise approximately from Tri-bimaximal, Bi-maximal or Golden Ratio neutrino mixing, together with Cabibbo-like charged lepton corrections arising from a Pati-Salam gauge group, leading to predictions for the CP-violating phase of $δ\approx \pm 90^o, \pm 180^o, \pm 75^o$, respectively. Alternatively, we show that TBC neutrino mixing may realised accurately using the type I see-saw mechanism with partially constrained sequential right-handed neutrino dominance, assuming a family symmetry which is broken by a flavon common to quarks and neutrinos.
description: 16 pages. References added, minor changes
Nonequilibrium DMFT+CPA for Correlated Disordered Systems
Creators: name: Dohner, Eric
name: Terletska, Hanna
name: Tam, Ka-Ming
name: Moreno, Juana
name: Fotso, Herbert F
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a solution for the nonequilibrium dynamics of an interacting disordered system. The approach adapts the combination of the equilibrium dynamical mean field theory (DMFT) and the equilibrium coherent potential approximation (CPA) methods to the nonequilibrium many-body formalism, using the Kadanoff-Baym-Keldysh complex time contour, for the dynamics of interacting disordered systems away from equilibrium. We use our time domain solution to obtain the equilibrium density of states of the disordered interacting system described by the Anderson-Hubbard model, bypassing the necessity for the cumbersome analytical continuation process. We further apply the nonequilibrium solution to the interaction quench problem for an isolated disordered system. Here, the interaction is abruptly changed from zero (non-interacting system) to another constant (finite) value at which it is subsequently kept. We observe via the time-dependence of the potential, kinetic, and total energies, the effect of disorder on the relaxation of the system as a function of final interaction strength. The real-time approach has the potential to shed new light on the fundamental role of disorder in the nonequilibrium dynamics of interacting quantum systems.
description: 8 pages, 7 figures
Recent progress on the accurate determination of the equation of state of neutron and nuclear matter
Creators: name: Armani, Paolo
name: Illarionov, Alexey Yu.
name: Lonardoni, Diego
name: Pederiva, Francesco
name: Gandolfi, Stefano
name: Schmidt, Kevin E.
name: Fantoni, Stefano
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The problem of accurately determining the equation of state of nuclear and neutron matter at density near and beyond saturation is still an open challenge. In this paper we will review the most recent progress made by means of Quantum Monte Carlo calculations, which are at present the only ab-inito method capable to treat a sufficiently large number of particles to give meaningful estimates depending only on the choice of the nucleon-nucleon interaction. In particular, we will discuss the introduction of density-dependent interactions, the study of the temperature dependence of the equation of state, and the possibility of accurately studying the effect of the onset of hyperons by developing an accurate hyperon-nucleon and hyperon-nucleon-nucleon interaction.
description: 3 figures, 1 table, to appear in the Proceedings of "XIII Convegno di Cortona su Problemi di Fisica Nucleare Teorica", Cortona (Italy), April 6-8, 2011
D6.1 Plano de Divulgação, Sensibilização e Envolvimento
Creators: name: Príncipe, Pedro
name: Moura, Paula
name: Pais, Clarisse
Publisher: name: Zenodo
Year: 2025
Subjects: research data management
open science

description: Com este documento pretende-se elaborar uma base sólida de estratégia de comunicação e envolvimento/interação para o Consórcio ReData, assegurando um envolvimento alargado, informar, educar e mobilizar todos os membros do Consócio, bem como atrair as organizações da rede de centros de competência e outros stakeholders.Neste sentido, é crucial que a mensagem seja eficazmente comunicada e de que todos os envolvidos participem ativamente, criando valor acrescentado à formação em Gestão de dados de Investigação (GDI) e dados FAIR.Pretende-se assim, impulsionar o Status Quo para antecipar necessidades e formar as tão necessárias comunidades de prática em torno dos diferentes perfis profissionais em GDI e Ciência Aberta.Para além da criação dos canais de comunicação estratégicos, será fomentada a colaboração entre as diferentes instituições que compõem este consórcio, bem como será medido o sucesso dos mesmos utilizando métricas adequadas.O propósito último será tornar evidente à comunidade GDI, órgão decisores e comunidade em geral a relevância dos dados no ecossistema do processo científico e para além dele, fazendo garantir a transparência, a equidade e a eficiência na sua gestão.
Assessment of density functional approximations for the hemibonded structure of water dimer radical cation
Creators: name: Pan, Piin-Ruey
name: Lin, You-Sheng
name: Tsai, Ming-Kang
name: Kuo, Jer-Lai
name: Chai, Jeng-Da
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Due to the severe self-interaction errors associated with some density functional approximations, conventional density functionals often fail to dissociate the hemibonded structure of water dimer radical cation (H2O)2+ into the correct fragments: H2O and H2O+. Consequently, the binding energy of the hemibonded structure (H2O)2+ is not well-defined. For a comprehensive comparison of different functionals for this system, we propose three criteria: (i) The binding energies, (ii) the relative energies between the conformers of the water dimer radical cation, and (iii) the dissociation curves predicted by different functionals. The long-range corrected (LC) double-hybrid functional, omegaB97X-2(LP) [J.-D. Chai and M. Head-Gordon, J. Chem. Phys., 2009, 131, 174105.], is shown to perform reasonably well based on these three criteria. Reasons that LC hybrid functionals generally work better than conventional density functionals for hemibonded systems are also explained in this work.
description: 10 pages, 5 figures, 4 tables
Two-qubit silicon quantum processor with operation fidelity exceeding 99%
Creators: name: Mills, A. R.
name: Guinn, C. R.
name: Gullans, M. J.
name: Sigillito, A. J.
name: Feldman, M. M.
name: Nielsen, E.
name: Petta, J. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Silicon spin qubits satisfy the necessary criteria for quantum information processing. However, a demonstration of high fidelity state preparation and readout combined with high fidelity single- and two-qubit gates, all of which must be present for quantum error correction, has been lacking. We use a two qubit Si/SiGe quantum processor to demonstrate state preparation and readout with fidelity over 97%, combined with both single- and two-qubit control fidelities exceeding 99%. The operation of the quantum processor is quantitatively characterized using gate set tomography and randomized benchmarking. Our results highlight the potential of silicon spin qubits to become a dominant technology in the development of intermediate-scale quantum processors.
ELECTRONIC SUPPLEMENTARY DATASETS - MATHEUS COLLI SILVA PHD DISSERTATION 2023
Creators: name: Colli-Silva, Matheus
Publisher: name: figshare
Year: 2023
Subjects: Plant biology not elsewhere classified
Biogeography and phylogeography
Evolutionary ecology
Molecular evolution
Population geography
Plant and fungus systematics and taxonomy

description: © ALL RIGHTS RESERVED. Files for this dissertation are made available exclusively for academic purposes and cannot be shared or published elsewhere without the consent of the student and advisors. Please do not hesitate to contact Matheus Colli Silva (matheus.colli.silva@alumni.usp.br) or José Rubens Pirani (pirani@usp.br) in case of having trouble accessing this data. Chapters 1, 2 and 3 do not have supplementary files. Password for expanding compressed files available at the dissertation or upon request.
Slow passage through a Hopf-like bifurcation in piecewise linear systems: application to elliptic bursting
Creators: name: Penalva, Jordi
name: Desroches, Mathieu
name: Teruel, Antonio E.
name: Vich, Catalina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The phenomenon of slow passage through a Hopf bifurcation is ubiquitous in multiple-timescale dynamical systems, where a slowly-varying quantity replacing a static parameter induces the solutions of the resulting slow-fast system to feel the effect of a Hopf bifurcation with a delay. This phenomenon is well understood in the context of smooth slow-fast dynamical systems. In the present work, we study for the first time this phenomenon in piecewise linear (PWL) slow-fast systems. This special class of systems is indeed known to reproduce all features of their smooth counterpart while being more amenable to quantitative analysis and offering some level of simplification, in particular through the existence of canonical (linear) slow manifolds. We provide conditions for a PWL slow-fast system to exhibit a slow passage through a Hopf-like bifurcation, in link with the number of linearity zones considered in the system and possible connections between canonical attracting and repelling slow manifolds. In doing so, we fully describe the so-called way-in/way-out function. Finally, we investigate this slow passage effect in the Doi-Kumagai model, a neuronal PWL model exhibiting elliptic bursting oscillations.
Social-Media-Kommunikation in Bibliotheken
Creators: name: Neumann, Marlene
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 1 (2019): AKMB-news
Dihadron Fragmentation Functions in the NJL-jet model
Creators: name: Casey, A.
name: Thomas, A. W.
name: Matevosyan, H. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The NJL-jet model provides a framework for calculating fragmentation functions without introducing ad hoc parameters. Here the NJL-jet model is extended to investigate dihadron fragmentation functions.
description: 4 pages, 5 figures, Proceedings of 8th Circum-Pan-Pacific Symposium on High Energy Spin Physics
Lizenzierungsservice Vergriffene Werke (VW-LiS) – Quellen des 20. Jahrhunderts digital zugänglich machen
Creators: name: Herrmann, Simon
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 1 (2019): AKMB-news
Orbit-Based Dynamical Models of the Sombrero Galaxy (NGC 4594)
Creators: name: Jardel, John R.
name: Gebhardt, Karl
name: Shen, Juntai
name: Fisher, David
name: Kormendy, John
name: Kinzler, Jeffry
name: Lauer, Tod R.
name: Richstone, Douglas
name: Gültekin, Kayhan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present axisymmetric, orbit-based models to study the central black hole, stellar mass-to-light ratio, and dark matter halo of NGC 4594 (M104, the Sombrero Galaxy). For stellar kinematics, we use published high-resolution kinematics of the central region taken with the Hubble Space Telescope, newly obtained Gemini long-slit spectra of the major axis, and integral field kinematics from the SAURON instrument. At large radii, we use globular cluster kinematics to trace the mass profile and apply extra leverage to recovering the dark matter halo parameters. We find a black hole of mass M_{\bullet}=(6.6 +/- 0.4) x 10^8 M_{\odot}, and determine the stellar M/L_I=3.4 +/- 0.05 (uncertainties are the 68% confidence band marginalized over the other parameters). Our best fit dark matter halo is a cored logarithmic model with asymptotic circular speed V_c=376 +/- 12 km/s and core radius r_c= 4.7 +/- 0.6 kpc. The fraction of dark to total mass contained within the half-light radius is 0.52. Taking the bulge and disk components into account in our calculation of σ_e puts NGC 4594 squarely on the M-σrelation. We also determine that NGC 4594 lies directly on the M-L relation.
description: 13 pages, 10 figures, accepted for publication in ApJ
Quantum signatures in quadratic optomechanical heat engine with an atom in a tapered trap
Creators: name: Izadyari, Mohsen
name: Öncü, Mehmet
name: Durak, Kadir
name: Müstecaplıoğlu, Özgür E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate how quantum signatures can emerge in a single atom heat engine consisting of an atom confined in a tapered trap and subject to hot and cold thermal reservoirs. A similar system was realized experimentally in Ref.[1]. We model such a system using a quadratic optomechanical model and identify an effective Otto cycle in the system's dynamics. We compare the engine's performance in the quantum and classical regimes by evaluating the power dissipated. We find that lowering the temperature is insufficient to make the single atom engine of Ref.[1] a genuine quantum-enhanced heat engine. We show that it is necessary to make the trap more asymmetric and confined to ensure that quantum correlations cause an enhancement in the power output.
description: 13 pages
Integer quantum Hall effect for bosons: A physical realization
Creators: name: Senthil, T.
name: Levin, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A simple physical realization of an integer quantum Hall state of interacting two dimensional bosons is provided. This is an example of a "symmetry-protected topological" (SPT) phase which is a generalization of the concept of topological insulators to systems of interacting bosons or fermions. Universal physical properties of the boson integer quantum Hall state are described and shown to correspond to those expected from general classifications of SPT phases.
description: 4+ pages
Über die Macht der Bücher in Zeiten des Krieges
Creators: name: Grohmann, Thomas
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 1 (2019): AKMB-news
On the large role of weak uncorrelated pinning introduced by BZO nanorods at low temperatures in REBCO thin films
Creators: name: Xu, A.
name: Braccini, V.
name: Jaroszynski, J.
name: Xin, Y.
name: Larbalestier, D. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: REBa$_{2}$Cu$_{3}$O$_{x}$ films can achieve remarkably high critical current density values by the incorporation of insulating nanoparticles. A particular interesting case concerns BaZrO$_{3}$ (BZO) nanorods, whose strongly correlated effect is seen at high temperatures. Here we investigate the field, temperature and angular dependence of the critical current density over a wide temperature range from 4.2 K to 77 K, and magnetic fields up to 31 T. We show that the correlated c-axis pinning of BZO nanorods becomes progressively less obvious at lower temperature. Indeed at 4.2 K and fields up to 31 T, the only correlated pinning is for fields parallel to the film plane. We interpret the change as being due to significant contributions from dense but weak pins that thermal fluctuations render ineffective at high temperatures but which become strong at lower temperatures.
description: 9 pages, 8 figures
Andres Furger-Gunti und Ludwig Berger, Katalog und Tafeln der Funde aus der spätkeltischen Siedlung Basel-Gasfabrik
Creators: name: Lorenz, Herbert
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Andres Furger-Gunti und Ludwig Berger, Katalog und Tafeln der Funde aus der spätkeltischen Siedlung Basel-Gasfabrik. Unter Mitarbeit von P. Thommen. Untersuchungen zur spätkeltisch-frührömischen Übergangszeit in Basel 2. Basler Beiträge zur Ur- und Frühgeschichte 7. Habegger Verlag, Derendingen-Solothurn 1980. 450 Seiten, 175 Tafeln, 2 Beilagen.
description: Bonner Jahrbücher, Bd. 182.1982: Bonner Jahrbücher
Development of data processing and analysis pipeline for the RICOCHET experiment
Creators: name: Colas, J.
name: Billard, J.
name: Ferriol, S.
name: Gascon, J.
name: Salagnac, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Achieving a percentage-level precision measurement of the Coherent Elastic Neutrino Nucleus Scattering (CEνNS) spectrum requires a robust data processing pipeline which can be characterised with great precision. To fulfil this goal we present hereafter a new Python-based data processing pipeline specifically designed for temporal data analysis and pulse amplitude estimation. This pipeline features a data generator allowing to accurately simulate the expected data stream from the RICOCHET experiment at the Institut Laue Langevin (ILL) nuclear reactor, including both background and CEνNS signals. This data generator is pivotal to fully understand and characterise the data processing overall efficiency, its reconstruction biases, and to properly optimise its configuration parameters. We show that thanks to this optimized data processing pipeline, the CryoCube detector array will be able to achieve a 70 eV energy threshold combined with electronic/nuclear recoil discrimination down to {\sim}100 eV, hence fulfilling the RICOCHET targeted performance.
Anomalous exponents at the onset of an instability
Creators: name: Pétrélis, F.
name: Alexakis, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Critical exponents are calculated exactly at the onset of an instability, using asymptotic expansiontechniques. When the unstable mode is subject to multiplicative noise whose spectrum at zero frequency vanishes, we show that the critical behavior can be anomalous, i.e. the mode amplitude X scales with departure from onset μas $ ~ μ^β$ with an exponent $β$ different from its deterministic value. This behavior is observed in a direct numerical simulation of the dynamo instability and our results provide a possible explanation to recent experimental observations.
Self-supervised Correlation Mining Network for Person Image Generation
Creators: name: Wang, Zijian
name: Qi, Xingqun
name: Yuan, Kun
name: Sun, Muyi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Person image generation aims to perform non-rigid deformation on source images, which generally requires unaligned data pairs for training. Recently, self-supervised methods express great prospects in this task by merging the disentangled representations for self-reconstruction. However, such methods fail to exploit the spatial correlation between the disentangled features. In this paper, we propose a Self-supervised Correlation Mining Network (SCM-Net) to rearrange the source images in the feature space, in which two collaborative modules are integrated, Decomposed Style Encoder (DSE) and Correlation Mining Module (CMM). Specifically, the DSE first creates unaligned pairs at the feature level. Then, the CMM establishes the spatial correlation field for feature rearrangement. Eventually, a translation module transforms the rearranged features to realistic results. Meanwhile, for improving the fidelity of cross-scale pose transformation, we propose a graph based Body Structure Retaining Loss (BSR Loss) to preserve reasonable body structures on half body to full body generation. Extensive experiments conducted on DeepFashion dataset demonstrate the superiority of our method compared with other supervised and unsupervised approaches. Furthermore, satisfactory results on face generation show the versatility of our method in other deformation tasks.
Incompressible flows with piecewise constant density
Creators: name: Danchin, Raphaël
name: Mucha, Piotr B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We investigate the incompressible Navier-Stokes equations with variable density. The aim is to prove existence and uniqueness results in the case of discontinuous ini- tial density. In dimension n = 2, 3, assuming only that the initial density is bounded and bounded away from zero, and that the initial velocity is smooth enough, we get the local-in-time existence of unique solutions. Uniqueness holds in any dimension and for a wider class of velocity fields. Let us emphasize that all those results are true for piecewise constant densities with arbitrarily large jumps. Global results are established in dimension two if the density is close enough to a positive constant, and in n-dimension if, in addition, the initial velocity is small. The Lagrangian formula- tion for describing the flow plays a key role in the analysis that is proposed in the present paper.
description: 32 pages
Der Trichtinger Ring und seine Probleme
Creators: name: Megaw, J. V. S.
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Der Trichtinger Ring und seine Probleme. Kolloquium anläßlich des 70. Geburtstags von Professor Dr. Dr. h. c. Kurt Bittel. Heimat- und Altertumsverein Heidenheim an der Brenz e. V. 1978. 65 Seiten, 16 Abbildungen.
description: Bonner Jahrbücher, Bd. 182.1982: Bonner Jahrbücher
Measurements of the associated production of a W boson and a charm quark in proton-proton collisions at $\sqrt{s} =$ 8 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the associated production of a W boson and a charm (c) quark in proton-proton collisions at a centre-of-mass energy of 8 TeV are reported. The analysis uses a data sample corresponding to a total integrated luminosity of 19.7 fb$^{-1}$ collected by the CMS detector at the LHC. The W bosons are identified through their leptonic decays to an electron or a muon, and a neutrino. Charm quark jets are selected using distinctive signatures of charm hadron decays. The product of the cross section and branching fraction $σ$(pp $\to$ W + c + X) $\mathcal{B}$(W $\to$ $\ellν$), where $\ell$ = e or $μ$, and the cross section ratio $σ$(pp $\to$ W$^+$ + c + X) / $σ$(pp $\to$ W$^-$ + $\mathrm{\bar{c}}$ + X) are measured inclusively and differentially as functions of the pseudorapidity and of the transverse momentum of the lepton from the W boson decay. The results are compared with theoretical predictions. The impact of these measurements on the determination of the strange quark distribution is assessed.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-18-013 (CMS Public Pages)
Jakob Seibert, die politischen Flüchtlinge und Verbannten in der griechischen Geschichte. Von den Anfängen bis zur Unterwerfung durch die Römer
Creators: name: Will, Wolfgang
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Jakob Seibert, die politischen Flüchtlinge und Verbannten in der griechischen Geschichte. Von den Anfängen bis zur Unterwerfung durch die Römer. Wissenschaftliche Buchgesellschaft, Darmstadt 1979.2 Bände, 653 Seiten.
description: Bonner Jahrbücher, Bd. 182.1982: Bonner Jahrbücher
Matrix elements of the electromagnetic operator between kaon and pion states
Creators: name: Baum, I.
name: Lubicz, V.
name: Martinelli, G.
name: Orifici, L.
name: Simula, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the matrix elements of the electromagnetic (EM) operator (\bar{s} F{μν} σ{μν} d) between kaon and pion states, using lattice QCD with maximally twisted-mass fermions and two flavors of dynamical quarks (Nf = 2). The operator is renormalized non-perturbatively in the RI'/MOM scheme and our simulations cover pion masses as light as 270 MeV and three values of the lattice spacing from ~ 0.07 up to ~ 0.1 fm. At the physical point our result for the corresponding tensor form factor at zero-momentum transfer is fT{Kπ}(0) = 0.417 (14_stat) (5_syst), where the systematic error does not include the effect of quenching the strange and charm quarks. Our result differs significantly from the old quenched result fT{Kπ}(0) = 0.78 (6) obtained by the SPQcdR Collaboration with pion masses above 500 MeV. We investigate the source of this difference and conclude that it is mainly related to the chiral extrapolation. We also study the tensor charge of the pion and obtain the value fT{ππ}(0) = 0.195 (8_stat) (6_syst) in good agreement with, but more accurate than the result fT{ππ}(0) = 0.216 (34) obtained by the QCDSF Collaboration using higher pion masses.
description: 6 pages, 5 figures, 2 tables
Hans-Christian Schneider, Das Problem der Veteranenversorgung in der späteren römischen Republik
Creators: name: Bruhns, Hinnerk
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Hans-Christian Schneider, Das Problem der Veteranenversorgung in der späteren römischen Republik. In Kommission bei Rudolf Habelt Verlag, Bonn 1977. 291 Seiten.
description: Bonner Jahrbücher, Bd. 182.1982: Bonner Jahrbücher
Festigkeit von schwimmenden Eisdecken
Creators: name: Häusler, Franz Ulrich
Publisher: name: TUHH Universitätsbibliothek
Year: 1979
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Festigkeit von schwimmenden Eisdecken
Graphic assets for Dissemination and Communication activities (second release)
Creators: name: Giberti, Luca
name: Santucci, Raffaella
Publisher: name: Zenodo
Year: 2023

description: This document provides a short overview of the production of all print and presentation materials for the
 communication and dissemination of SMART-electron. The first and second release of these assets are
 presented. All future printed materials for SMART-electron will be based on the designs and templates
 described in this document. Graphic materials play a key role in dissemination and communication, as the
 first impression one gets of the project, which cannot be undone, is imparted by them.
 This document comprises four chapters.
 Chapter 1 is a short introduction.
 Chapter 2 provides a brief overview of the philosophy behind the design of the graphic materials.
 Chapter 3 provides a list of the designs that were produced and details how the design and copywriting
 process unfolded.
 Chapter 4 provides low-resolution copies of the first release of the designs.
 Chapter 5 provides low-resolution copies of the second release of the designs.
 Chapter 6 sums up the conclusions and take-home messages that were gleaned through this work.
Towards a consistent lattice Boltzmann model for two-phase fluid
Creators: name: Hosseini, S. A.
name: Dorschner, B.
name: Karlin, I. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We propose a kinetic framework for single-component non-ideal isothermal flows. Starting from a kinetic model for a non-ideal fluid, we show that under conventional scaling the Navier-Stokes equations with a non-ideal equation of state are recovered in the hydrodynamic limit. A scaling based on the smallness of velocity increments is then introduced, which recovers the full Navier-Stokes-Korteweg equations. The proposed model is realized on a standard lattice and validated on a variety of benchmarks. Through a detailed study of thermodynamic properties including co-existence densities, surface tension, Tolman length and sound speed, we show thermodynamic consistency, well-posedness and convergence of the proposed model. Furthermore, hydrodynamic consistency is demonstrated by verification of Galilean invariance of the dissipation rate of shear and normal modes and the study of visco-capillary coupling effects. Finally, the model is validated on dynamic test cases in three dimensions with complex geometries and large density ratios such as drop impact on textured surfaces and mercury drops coalescence.