cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Taking to the Streets in Germany – Disenchanted and Confident Critics in Mass Demonstrations
Creators: name: Daphi, Priska
name: Haunss, Sebastian
name: Sommer, Moritz
name: Teune, Simon
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: protesters in Germany
subject: socio-demographic attributes
subject: political attitudes
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: This paper analyses the socio-demographic attributes and political attitudes of protesters in Germany. In doing so, the paper studies participation at demonstrations, one of the key forms of non-electoral political participation in Germany and a central political arena in which to negotiate political and cultural conflicts. Methodologically, we draw on original data from nine protest surveys collected between 2003 and 2020. The demonstrations under scrutiny address a wide variety of issues such as peace, climate change, global justice, immigration, international trade and social policy. Analysing protesters’ profiles, we focus on differences both within and across demonstrations. We show that demonstrators’ socio-demographic and attitudinal characteristics diverge considerably across the surveyed demonstrations. In particular, we identify two clusters of demonstrations, differing most prominently regarding participants’ political trust, satisfaction with democracy, and perceptions of self-efficacy – the ‘disenchanted critics’ and the ‘confident critics’. Based on a regression analysis across all nine demonstrations, we further show that the distinction of these two demonstration clusters is not the result of the presence or absence of certain groups of demonstrators.
Du bonhomme d’Ampère au Tokamak
Creators: name: Bigot, Bernard
name: Bécoulet, Alain
name: Daillant, Jean
name: Verwaerde, Alain
Publisher: name: SEE
Year: 2021

description: La table ronde a été constituée de trois exposés successifs, complétés chacun par quelques réponses aux interrogations des auditeurs. Les trois communications illustrent l’actualité contemporaine des lois fondamentales de l’électrodynamique, telles que formulées par Ampère, puis complétées par Gauss et Maxwell. Les trois interventions concernent des entreprises et des recherches de haute technologie, mettant en jeu des ressources humaines ou techniques considérables ainsi que des coopérations internationales. Des enjeux sociétaux importants leur sont associés : la fusion nucléaire contrôlée sera-t-elle un jour la source d’énergie dominante de l’humanité ? Quelles seront les conséquences et applications de la connaissance plus intime de la matière ?
Radiative Emission Enhancement Using Nano-antennas Made of Hyperbolic Metamaterial Resonators
Creators: name: Guclu, Caner
name: Luk, Ting Shan
name: Wang, George T.
name: Capolino, Filippo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A hyperbolic metamaterial (HM) resonator is analyzed as a nano-antenna for enhancing the radiative emission of quantum emitters in its vicinity. It has been shown that the spontaneous emission rate by an emitter near a hyperbolic metamaterial substrate is enhanced dramatically due to very large density of states. However, enhanced coupling to the free-space, which is central to applications such as solid-state lighting, has not been investigated significantly. Here, we numerically demonstrate approximately 100 times enhancement of the free-space radiative emission at 660 nm wavelength by utilizing a cylindrical HM resonator with a radius of 54 nm and a height of 80 nm on top of an opaque silver-cladded substrate. We also show how the free-space radiation enhancement factor depends on the dipole orientation and the location of the emitter near the subwavelength resonator. Furthermore, we calculate that an array of HM resonators with subwavelength spacings can maintain most of the enhancement effect of a single resonator.
description: 5 pages, 7 figures
Electronic states of a disordered 2D quasiperiodic tiling: from critical states to Anderson localization
Creators: name: Jagannathan, Anuradha
name: Tarzia, Marco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider critical eigenstates in a two dimensional quasicrystal and their evolution as a function of disorder. By exact diagonalization of finite size systems we show that the evolution of properties of a typical wave-function is non-monotonic. That is, disorder leads to states delocalizing, until a certain crossover disorder strength is attained, after which they start to localize. Although this non-monotonic behavior is only present in finite-size systems and vanishes in the thermodynamic limit, the crossover disorder strength decreases logarithmically slowly with system size, and is quite large even for very large approximants. The non-monotonic evolution of spatial properties of eigenstates can be observed in the anomalous dimensions of the wave-function amplitudes, in their multifractal spectra, and in their dynamical properties. We compute the two-point correlation functions of wave-function amplitudes and show that these follow power laws in distance and energy, consistent with the idea that wave-functions retain their multifractal structure on a scale which depends on disorder strength. Dynamical properties are studied as a function of disorder. We find that the diffusion exponents do not reflect the non-monotonic wave-function evolution. Instead, they are essentially independent of disorder until disorder increases beyond the crossover value, after which they decrease rapidly, until the strong localization regime is reached. The differences between our results and earlier studies on geometrically disordered ``phason-flip'' models lead us to propose that the two models are in different universality classes. We conclude by discussing some implications of our results for transport and a proposal for a Mott hopping mechanism between power law localized wave-functions, in moderately disordered quasicrystals.
description: New figures and references added (23 pages, 13 figures)
Regulation of Sex Determination
Creators: name: Allen, Jessica
name: Landry, Christie
name: Pickell, Laura
name: Taylor, Deborah
Publisher: name: QUBES Educational Resources
Year: 2019

description: This activity accompanies the HHMI BioInteractive module Sex Verification of Athletes
(​https://www.hhmi.org/biointeractive/testing-athletes​).  It provides students with exercises to explore the aspects of human anatomy and physiology.
L’électricité dans l’automobile
Creators: name: Bastard, Patrick
name: Lambert, Florence
name: Watteau, Philippe
name: Vincent, Yann
Publisher: name: SEE
Year: 2021

description: La table ronde a été conduite sur la base d’échanges entre les intervenants qui ont évoqué l’ensemble des aspects de l’utilisation de l’électricité dans la mobilité aujourd’hui et des développements de techniques ou de produits qui en découlent. La part consacrée aux réponses aux nombreuses questions est restée limitée par le temps et certaines réponses ont été données dans les échanges/présentations. Les points-clé relevés par le rédacteur ont été regroupés suivant les principaux thèmes évoqués.
Untitled Item
Creators: name: Voronenko, Yuriy
name: Hulchiy, Olesya
name: Zakharova, Nadiia
name: Balashov, Kostyantyn
Publisher: name: figshare
Year: 2020
Subjects: subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences

description: Сучасний стан системи безперервного професійного розвитку лікарів робить вкрай актуальним використання інструментарію маркетингу та комунікацій.
Метою праці є опис самооцінки лікарями ключових чинників, що впливають на вибір форми БПР, та їх класифікація.
Матеріали і методи. 354 лікарям було запропоновано оцінити додаткові чинники, які впливають на вибір курсу БПР. Отримані відповіді були каталогізовані двома експертами та узгоджені між собою.
Обговорення результатів. Встановлений 41 чинник впливу на вибір форми БПР за п'ятьма основними напрямами.
Висновки. Врахування визначених 5-ти груп чинників під час планування є доцільним під час планування навчальних курсів.
School professionals’ knowledge about pediatric traumatic brain injury: an international study
Creators: name: Olabarrieta-Landa, Laiene
name: Ramos-Usuga, Daniela
name: Benito-Sánchez, Itziar
name: Gonzalez, Isabel
name: Hernandez, Karina López
name: Grabner, Cristian Yair Logatt
name: Perrin, Paul
name: Arango-Lasprilla, Juan Carlos
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: To determine Spanish-speaking school professionals’ level of knowledge and attitudes regarding pediatric TBI. School professionals(n = 2,238) from 19 countries completed an online-survey regarding their training, knowledge and misconceptions, attitudes and perceptions about TBI. Of the full sample 75% (n = 1689) knew what TBI was, though only 18% (n = 350) reported having experience with a student with TBI. Only 7.7% (n = 143) and 3% (n = 55) of participants could identify all of the common short- and long-term TBI sequelae, respectively. Special education professionals, those with experience with a student with TBI, and those who had received training regarding TBI showed greater knowledge in these areas. Although participants showed high levels of knowledge in 6/24 misconceptions of TBI, they endorsed others. Group, sex, experience with students with TBI, training in TBI, and number of years working were significantly linked to some misconceptions about TBI; however, the effect sizes were small. The knowledge and experience that Spanish-speaking school professionals have regarding childhood TBI are minimal. It is therefore critical that these professionals receive a more comprehensive education during their academic training and the practice of their profession about TBI.
Extracting hadron masses from fixed topology simulations
Creators: name: Dromard, Arthur
name: Wagner, Marc
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Lattice QCD simulations tend to become stuck in a single topological sector at fine lattice spacing or when using chirally symmetric overlap quarks. In such cases physical observables differ from their full QCD counterparts by finite volume corrections. These systematic errors need to be understood on a quantitative level and possibly be removed. In this paper we extend an existing relation from the literature between two-point correlation functions at fixed and the corresponding hadron masses at unfixed topology by calculating all terms proportional to $1/V^2$ and $1/V^3$, where $V$ is the spacetime volume. Since parity is not a symmetry at fixed topology, parity mixing is comprehensively discussed. In the second part of this work we apply our equations to a simple model, quantum mechanics on a circle both for a free particle and for a square-well potential, where we demonstrate in detail, how to extract physically meaningful masses from computations or simulations at fixed topology.
description: 38 pages, 7 figures, addition of a discussion on parity mixing and correction of typos
Digital Oultlook Sri Lanka 2022.pdf
Creators: name: Dk, Thilina
Publisher: name: figshare
Year: 2022
Subjects: subject: 150502 Marketing Communications
subject: FOS: Economics and business
subject: 150503 Marketing Management (incl. Strategy and Customer Relations)
subject: 150504 Marketing Measurement

description: The Sri Lankan Digital Ecosystem continues to evolve at a rapid pace. According to the Information and Communication Technology Agency (ICTA) of Sri Lanka & United Nations Conference on Trade and Development, Sri Lanka’s Digital Economy has reached 4.37% of GDP by giving some clear signs of Digitally driven societies island wide. Even though the Covid-19 Pandemic unleashed waves of disruptions at the global level, we have approached the two-year mark while being more optimistic in the middle of the pandemic by investing more in Digital Technolgies to enhance connectivity access to trade finance across the country. With the global digital transformation, significant shifts have occurred in consumer behaviour around the world. The pandemic has enormously changed consumer behaviour, and these new behavioural trends are more likely to stay forever. Businesses have started integrating digital technologies into all areas of their business operations to ensure that their value delivery process meets the newest needs of their customers.
ITER : un atterrissage à la Spielberg de la base du cryostat
Creators: name: Hauet, Jean-Pierre
Publisher: name: SEE
Year: 2020

description: Transporter la gigantesque base du cryostat sur 110 mètres afin de l’amener à la verticale de l’embase cylindrique en béton destinée à l’accueillir et à la faire doucement atterrir au millimètre près telle une soucoupe volante.
Comparison of veterans affairs and NIDILRR traumatic brain injury model systems participants with disorders of consciousness
Creators: name: Hamilton, Janette A.
name: Ketchum, Jessica M.
name: Hammond, Flora M.
name: Peterson, Michelle D.
name: Zasler, Nathan D.
name: Eapen, Blessen C.
name: Adamson, Maheen Mausoof
name: Galhorta, Pawan P.
name: Harris, Odette
name: Nakase-Richardson, Risa
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: To characterize demographic, pre-injury, and outcome data within the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR) and Veterans Affairs (VA) Traumatic Brain Injury Model Systems (TBIMS) cohorts with severe traumatic brain injury (TBI) with no command-following ability at time of admission to acute rehabilitation. Retrospective cohort. NIDILRR and VA TBI Model Systems (TBIMS) centers. 396 NIDILRR and 72 VA participants without command-following ability who experienced TBI with subsequent Disorder of Consciousness (DoC). Pre-injury and injury characteristics, rehabilitation outcomes, and 1-year self-reported outcomes. VA TBIMS cohort included individuals who were active duty or had military service before their injury. The VA cohort were more likely to be re-hospitalized at 1-year follow-up or residing in a long-term care or rehab setting. The NIDILRR TBIMS cohort had higher FIM and DRS scores at rehabilitation discharge, while the VA participants saw longer lengths of stay and higher numbers of “violent” injury types. This study allows for a better understanding of the comparability between VA and NIDILRR DoC cohorts providing guidance on how veteran and civilian samples might be merged in future TBIMS studies to explore predictors of recovery from a DoC.
Plane wave analysis of the second post-Newtonian hydrodynamic equations
Creators: name: Kremer, Gilberto M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The second post-Newtonian hydrodynamic equations are analyzed within the framework of a plane wave solution. The hydrodynamic equations for the mass and momentum density are coupled with six Poisson equations for the Newtonian and post-Newtonian gravitational potentials. Perturbations of the basic fields and gravitational potentials from a background state by assuming plane wave representations lead to a dispersion relation where the Jeans instability condition emerges. The influence of the first and second post-Newtonian approximations on the Jeans mass is determined. It was shown that the relative difference of the first post-Newtonian and the Newtonian Jeans masses is negative while the one of the second post-Newtonian approximation is positive. The two contributions imply a smaller mass needed for an overdensity to initiate the gravitational collapse than the one given by the Newtonian theory.
description: 7 pages
Silicene vs. ordered 2D silicide: the atomic and electronic structure of the Si-$(\sqrt{19}\times\sqrt{19})R23.4^{\circ}$/Pt(111) surface reconstruction
Creators: name: Svec, Martin
name: Hapala, Prokop
name: Ondracek, Martin
name: Blanco-Rey, Maria
name: Merino, Pablo
name: Mutombo, Pingo
name: Vondracek, Martin
name: Polyak, Yaroslav
name: Chab, Vladimir
name: Gago, Jose Angel Martin
name: Jelinek, Pavel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss the possibility of a 2D ordered structure formed upon deposition of Si on metal surfaces. We investigate the atomic and electronic structure of the Si-$(\sqrt{19}\times\sqrt{19})R23.4^{\circ}$/Pt(111) surface reconstruction by means of a set of experimental surface-science techniques supported by theoretical calculations. The theory achieves a very good agreement with the experimental results and corroborate beyond any doubt that this phase is a surface alloy consisting of Si$_3$Pt tetramers that resembles a twisted Kagome lattice. These findings render unlikely any formation of silicene or germanene on Pt(111) and other transition metal surfaces.
description: 5 pages, 4 figures
EOSC-Pillar: Linee guida per la conformità legale dei prodotti della ricerca (versione da stampa)
Creators: name: Sganga, Caterina
name: Amram, Denise
name: Di Giorgio, Sara
Publisher: name: Zenodo
Year: 2022
Subjects: EOSC
Scienza Aperta

description: Le Linee guida per la conformità legale dei prodotti della ricerca sono state elaborate dal progetto europeo EOSC Pillar, per aiutare i ricercatori a rispettare i requisiti legali di pubblicazione, condivisione e integrazione dei dati di ricerca. Il documento propone una checklist, organizzata in base alle fasi fondamentali di ogni progetto di ricerca, dalla proposta fino all’attuazione e revisione, che guida il ricercatore ad affrontare le problematiche relative alla proprietà intellettuale e alla gestione dei dati. Lo scopo delle linee guida è quello di promuovere l'attuazione dei principi FAIR anche oltre il loro scopo originario e realizzare le condizioni necessarie all’attuazione delle politiche di Open Data e Open Science. Le linee guida sono valide per tutti gli Stati membri dell'UE. Per maggiori dettagli e riferimenti normativi e bibliografici, è possibile fare riferimento all'ultima versione del rapporto Legal and Policy Framework e Federation Blueprint (DOI: 10.5281/zenodo.5647948). Versione digitale interattiva: https://doi.org/10.5281/zenodo.7152103
Determining parameters of a spherical black hole with a thin accretion disk by observing its shadow
Creators: name: Hioki, Kenta
name: Miyamoto, Umpei
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We revisit the classic system of a spherically symmetric black hole in general relativity (i.e., a Schwarzschild black hole) surrounded by a geometrically thin accretion disk. Our purpose is to examine whether one can determine three parameters of this system (i.e., black hole mass $M$, distance between the black hole and an observer $r_o$, inclination angle $i$) solely by observing the accretion disk and the black hole shadow. A point in our analysis is to allow $r_o$ to be finite, which is set to be infinite in most relevant studies. First, it is shown that one can determine the values of $(r_o/M, i)$, where $M/r_o$ is the so-called angular gravitational radius, from the size and shape of shadow. Then, it is shown that if one additionally knows the accretion rate $\dot{M}$ (respectively, mass $M$) by any independent theoretical or observational approach, one can determine the values of $(M, r_o, i)$ [respectively, $(\dot{M}, r_o, i)$] without degeneracy, in principle, from the value of flux at any point on the accretion disk.
description: 28 pages, 11 figures, title modified, sec 6 added, accepted for publication in Physical Review D
Instrumental vetoes for transient gravitational-wave triggers using noise-coupling models: The bilinear-coupling veto
Creators: name: Ajith, Parameswaran
name: Isogai, Tomoki
name: Christensen, Nelson
name: Adhikari, Rana
name: Pearlman, Aaron B.
name: Wein, Alex
name: Weinstein, Alan J.
name: Yuan, Ben
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: LIGO and Virgo recently completed searches for gravitational waves at their initial target sensitivities, and soon Advanced LIGO and Advanced Virgo will commence observations with even better capabilities. In the search for short duration signals, such as coalescing compact binary inspirals or "burst" events, noise transients can be problematic. Interferometric gravitational-wave detectors are highly complex instruments, and, based on the experience from the past, the data often contain a large number of noise transients that are not easily distinguishable from possible gravitational-wave signals. In order to perform a sensitive search for short-duration gravitational-wave signals it is important to identify these noise artifacts, and to "veto" them. Here we describe such a veto, the bilinear-coupling veto, that makes use of an empirical model of the coupling of instrumental noise to the output strain channel of the interferometric gravitational-wave detector. In this method, we check whether the data from the output strain channel at the time of an apparent signal is consistent with the data from a bilinear combination of auxiliary channels. We discuss the results of the application of this veto on recent LIGO data, and its possible utility when used with data from Advanced LIGO and Advanced Virgo.
description: Minor changes; To appear in Phys. Rev. D
Beam shaping using an ultra-high vacuum multileaf collimator and emittance exchange beamline
Creators: name: Majernik, N.
name: Andonian, G.
name: Lynn, W.
name: Kim, S.
name: Lorch, C.
name: Roussel, R.
name: Doran, S.
name: Wisniewski, E.
name: Whiteford, C.
name: Piot, P.
name: Power, J.
name: Rosenzweig, J. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We report the development of a multileaf collimator (MLC) for charged particle beams, based on independently actuated tungsten strips which can selectively scatter unwanted particles. The MLC is used in conjunction with an emittance exchange beamline to rapidly generate highly variable longitudinal bunch profiles. The developed MLC consists of 40 independent leaves that are 2 mm wide and can move up to 10 mm, and operates in an ultra high vacuum environment, enabled by novel features such as magnetically coupled actuation. An experiment at the Argonne Wakefield Accelerator, which previously used inflexible, laser-cut masks for beam shaping before an emittance exchange beamline, was conducted to test functionality. The experiment demonstrated myriad transverse mask silhouettes, as measured on a scintillator downstream of the MLC and the corresponding longitudinal profiles after emittance exchange, as measured using a transverse deflecting cavity. Rapidly changing between mask shapes enables expeditious execution of various experiments without the downtime associated with traditional methods. The many degrees of freedom of the MLC can enable optimization of experimental figures of merit using feed-forward control and advanced machine learning methods.
description: 7 pages, 7 figures
Is there a bound Lambda-n-n ?
Creators: name: Gal, Avraham
name: Garcilazo, Humberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The HypHI Collaboration at GSI argued recently for a (Lambda-n-n) bound state from the observation of its two-body (t + pi-) weak-decay mode. We derive constraints from several hypernuclear systems, in particular from the A=4 hypernuclei with full consideration of (Lambda N Sigma N) coupling, to rule out a bound (Lambda-n-n).
description: 12 pages, 4 tables; v2--extended (i) discussion of Table 4 with a new Eq.(7), (ii) discussion of CSB effects; v3 matches published version
Dr. Fridolin Schuler
Creators: name: Erismann
Publisher: name: Zentralbibliothek Zürich
Year: 1903
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Schuler, Fridolin
subject: Bilten
subject: Aarburg

description: Sonderabdruck aus der "Deutschen Medicinischen Wochenschrift" 1903, No. 27
Optomechanical Effects in Nanocavity-enhanced Resonant Raman Scattering of a Single Molecule
Creators: name: Shen, Xuan-Ming
name: Zhang, Yuan
name: Zhang, Shunping
name: Zhang, Yao
name: Meng, Qiu-Shi
name: Zheng, Guangchao
name: Lv, Siyuan
name: Wang, Luxia
name: Boto, Roberto A.
name: Shan, Chongxin
name: Aizpurua, Javier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this article, we address the optomechanical effects in surface-enhanced resonant Raman scattering (SERRS) from a single molecule in a nano-particle on mirror (NPoM) nanocavity by developing a quantum master equation theory, which combines macroscopic quantum electrodynamics and electron-vibration interaction within the framework of open quantum system theory. We supplement the theory with electromagnetic simulations and time-dependent density functional theory calculations in order to study the SERRS of a methylene blue molecule in a realistic NPoM nanocavity. The simulations allow us not only to identify the conditions to achieve conventional optomechanical effects, such as vibrational pumping, non-linear scaling of Stokes and anti-Stokes scattering, but also to discovery distinct behaviors, such as the saturation of exciton population, the emergence of Mollow triplet side-bands, and higher-order Raman scattering. All in all, our study might guide further investigations of optomechanical effects in resonant Raman scattering.
description: 15 pages; 9 figures
Backreaction and continuum limit in a closed universe filled with black holes
Creators: name: Korzyński, Mikołaj
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 83C25, 83C57, 83F05, 83C05

description: We discuss the continuum limit of the initial data for a vacuum, closed cosmological model with black holes as the only sources of the gravitational field. The model we consider is an exact solution of the constraint equations and represents a vacuum universe with a number of black holes placed on a spatial slice of $S^3$ topology considered at the moment of its largest expansion when the black holes are momentary at rest. We explain how and under what conditions the FLRW metric arises as the continuum limit when the number of black holes contained in the model goes to infinity. We also dicuss the relation between the effective cosmological parameters of the model, inferred from the large scale geometry of the spacetime, and the masses of individual black holes. In particular, we prove an estimate for the difference between the total effective mass of the system and the sum of the masses of all black holes, thus quantifying the effects of the inhomogeneities in the matter distribution or the cosmological backreaction.
description: 34 pages, 13 figures, minor corrections
Ground state cooling of mechanical motion in the unresolved sideband regime by use of optomechanically induced transparency
Creators: name: Ojanen, Teemu
name: Borkje, Kjetil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme for cooling mechanical motion to the ground state in an optomechanical system. Unlike standard sideband cooling, this scheme applies to the so-called unresolved sideband regime, where the resonance frequency of the mechanical mode is much smaller than the cavity linewidth. Ground state cooling becomes possible when assuming the presence of an additional, auxiliary mechanical mode and exploiting the effect of optomechanically induced transparency. We first consider a system where one optical cavity interacts with two mechanical modes, and show that ground state cooling of the unresolved mechanical mode is possible when the auxiliary mode is in the resolved sideband regime. We then present a modified setup involving two cavity modes, where both mechanical modes are allowed to be in the unresolved sideband regime.
description: 14 pages, 7 figures. v2: Added new subsections on exact results + 2 new figures
Emergent Lorentz Signature, Fermions, and the Standard Model
Creators: name: Kehayias, John
name: Mukohyama, Shinji
name: Uzan, Jean-Philippe
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This article investigates the construction of fermions and the formulation of the Standard Model of particle physics in a theory in which the Lorentz signature emerges from an underlying microscopic purely Euclidean $SO(4)$ theory. Couplings to a clock field are responsible for triggering the change of signature of the effective metric in which the standard fields propagate. We demonstrate that Weyl and Majorana fermions can be constructed in this framework. This construction differs from other studies of Euclidean fermions, as the coupling to the clock field allows us to write down an action which flows to the usual action in Minkowski spacetime. We then show how the Standard Model can be obtained in this theory and consider the constraints on non-Standard-Model operators which can appear in the QED sector due to CPT and Lorentz violation.
description: v2: references added, minor typos corrected, 8 pages, revtex4-1
Toward the ultimate reach of current imaging atmospheric Cherenkov telescopes and their sensitivity to TeV dark matter
Creators: name: Montanari, Alessandro
name: Moulin, Emmanuel
name: Rodd, Nicholas L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Indirect detection opens a unique window for probing thermal dark matter (DM): the same annihilation process that determined the relic abundance in the early Universe drives the present day astrophysical signal. While TeV-scale particles weakly coupled to the Standard Model face undoubted challenges from decades of null searches, the scenario remains compelling, and simple realizations such as Higgsino DM remain largely unexplored. The fate of such scenarios could be determined by gamma-ray observations of the centre of the Milky Way with Imaging Atmospheric Cherenkov Telescopes (IACTs). We consider the ultimate sensitivity of current IACTs to a broad range of TeV-scale DM candidates - including specific ones such as the Wino, Higgsino, and Quintuplet. To do so, we use realistic mock H.E.S.S.-like observations of the inner Milky Way halo, and provide a careful assessment of the impact of recent Milky Way mass modeling, instrumental and astrophysical background uncertainties in the Galactic Center region, and the theoretical uncertainty on the predicted signal. We find that the dominant systematic for IACT searches in the inner Galaxy is the unknown distribution of DM in that region, however, beyond this the searches are currently statistically dominated indicating a continued benefit from more observations. For two-body final states at $1~{\rm TeV}$, we find a H.E.S.S.-like observatory is sensitive to $\langle σv \rangle \sim 3 \times 10^{-26}-4 \times 10^{-25}~{\rm cm}^3{\rm s}^{-1}$, except for neutrino final states, although we find results competitive with ANTARES. In addition, the thermal masses for the Wino and Quintuplet can be probed; the Higgsino continues to be out of reach by at least a factor of a few. Our conclusions are also directly relevant to the next generation Cherenkov Telescope Array, which remains well positioned to be the discovery instrument for thermal DM.
description: 23 pages, 13 figures, 3 tables, including appendix. Accepted in Phys. Rev. D
SIDIS-RC EvGen: a Monte-Carlo event generator of semi-inclusive deep inelastic scattering with the lowest-order QED radiative corrections
Creators: name: Byer, Duane
name: Khachatryan, Vladimir
name: Gao, Haiyan
name: Akushevich, Igor
name: Ilyichev, Alexander
name: Peng, Chao
name: Prokudin, Alexei
name: Srednyak, Stan
name: Zhao, Zhiwen
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: SIDIS-RC EvGen is a C++ standalone Monte-Carlo event generator for studies of semi-inclusive deep inelastic scattering (SIDIS) processes at medium to high lepton beam energies. In particular, the generator contains binary and library components for generating SIDS events and calculating cross sections for unpolarized or longitudinally polarized beam and unpolarized, longitudinally or transversely polarized target. The structure of the generator incorporates transverse momentum-dependent parton distribution and fragmentation functions, whereby we obtain multi-dimensional binned simulation results, which will facilitate the extraction of important information about the three-dimensional nucleon structure from SIDIS measurements. In order to build this software, we have used recent elaborate QED calculations of the lowest-order radiative effects, applied to the leading order Born cross section in SIDIS. In this paper, we provide details on the theoretical formalism as well as the construction and operation of SIDIS-RC EvGen, e.g., how we handle the event generation process and perform multi-dimensional integration. We also provide example programs, flowcharts, and numerical results on azimuthal transverse single-spin asymmetries.
description: 58 pages, 11 figures, and 3 listings
L'électronique de puissance et le véhicule de demain ; optimisation d'un convertisseur 42 V-14 V sous des contraintes d'encombrement, de rendement, de compatibilité électromagnétique et thermiques
Creators: name: Chérif Larouci
name: Didier, Jean-Paul
name: S. Selvez
name: S. Prado
name: R. Couturier
name: E. Ohayone
name: X. Retailleaux
Publisher: name: SEE
Year: 2017

Abstract
Algebraic Bethe ansatz for the XXX chain with triangular boundaries and Gaudin model
Creators: name: António, N. Cirilo
name: Manojlović, N.
name: Salom, I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We implement fully the algebraic Bethe ansatz for the XXX Heisenberg spin chain in the case when both boundary matrices can be brought to the upper-triangular form. We define the Bethe vectors which yield the strikingly simple expression for the off shell action of the transfer matrix, deriving the spectrum and the corresponding Bethe equations. We explore further these results by obtaining the off shell action of the generating function of the Gaudin Hamiltonians on the Bethe vectors through the so-called quasi-classical limit.
description: 31 pages; typos corrected
Ab initio calculation of charge symmetry breaking in $A=7$ and $8$ $Λ$-hypernuclei
Creators: name: Le, Hoai
name: Haidenbauer, Johann
name: Meißner, Ulf-G.
name: Nogga, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The separation energies of the isospin triplet $^7_Λ\mathrm{He}$, $^7_Λ\mathrm{Li^{*}}$, $^7_Λ$Be, and the $T=1/2$ doublet $^8_Λ$Li, $^8_Λ$Be are investigated within the no-core shell model. Calculations are performed based on a hyperon-nucleon potential derived from chiral effective field theory at next-to-leading order. The potential includes the leading charge-symmetry breaking (CSB) interaction in the $Λ$N channel, whose strength has been fixed to the experimentally known difference of the $Λ$ separation energies of the mirror hypernuclei $^4_Λ\mathrm{He}$ and $^4_Λ\mathrm{H}$. It turns out that the CSB predicted for the $A=7$ systems is small and agrees with the splittings deduced from the empirical binding energies within the experimental uncertainty. In case of the $A=8$ doublet, the computed CSB is somewhat larger than the available experimental value. Using other experimental input for $A=4$ can change this prediction moving it closer to experiment.
description: 11 pages, 4 tables
W' signatures with odd Higgs particles
Creators: name: Dobrescu, Bogdan A.
name: Peterson, Andrea D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We point out that W' bosons may decay predominantly into Higgs particles associated with their broken gauge symmetry. We demonstrate this in a renormalizable model where the W' and W couplings to fermions differ only by an overall normalization. This "meta-sequential" W' boson decays into a scalar pair, with the charged one subsequently decaying into a W boson and a neutral scalar. These scalars are odd under a parity of the Higgs sector, which consists of a complex bidoublet and a doublet. The W' and Z' bosons have the same mass and branching fractions into scalars, and may show up at the LHC in final states involving one or two electroweak bosons and missing transverse energy.
description: 24 pages
Composite charge order in the pseudogap region of the cuprates
Creators: name: Tsvelik, A. M.
name: Chubukov, A. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the Ginzburg-Landau free energy functional for two coupled U(1) charge order parameters describing two non-equivalent charge orders with wave vector ${\bf Q}$ detected in X-ray and STM measurements of underdoped cuprates. We do not rely on a mean-field analysis, but rather utilize a field-theoretical technique suitable to study the interplay between vortex physics and discrete symmetry breaking in two-dimensional systems with U(1) symmetry. Our calculations support the idea that in the clean systems there are two transitions: from a high temperature disordered state into a state with a composite charge order which breaks time-reversal symmetry, but leaves U(1) fields disordered, and then into a state with quasi long range order in the U(1) fields.
description: 8 pages, 1 figure; the version to appear in Phys. Rev. B, typos removed
Micromotion-Synchronized Pulsed Doppler Cooling of Trapped Ions
Creators: name: Kato, Alexander
name: Nomerotski, Andrei
name: Blinov, Boris B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose and demonstrate a new method for Doppler cooling trapped-ion crystals where the distribution of micromotion amplitudes may be large and uneven. The technique uses pulses of Doppler cooling light synchronized with the trap RF that selectively target ions when their velocity is near a node, leading to more uniform cooling across a crystal by a single tone of cooling light. We lay out a theoretical framework that describes where this technique is practical, and provide a simple experimental demonstration.
A 2.5% measurement of the growth rate from small-scale redshift space clustering of SDSS-III CMASS galaxies
Creators: name: Reid, Beth A.
name: Seo, Hee-Jong
name: Leauthaud, Alexie
name: Tinker, Jeremy L.
name: White, Martin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We perform the first fit to the anisotropic clustering of SDSS-III CMASS DR10 galaxies on scales of ~ 0.8 - 32 Mpc/h. A standard halo occupation distribution model evaluated near the best fit Planck LCDM cosmology provides a good fit to the observed anisotropic clustering, and implies a normalization for the peculiar velocity field of M ~ 2 x 10^13 Msun/h halos of f*sigma8(z=0.57) = 0.450 +/- 0.011. Since this constraint includes both quasi-linear and non-linear scales, it should severely constrain modified gravity models that enhance pairwise infall velocities on these scales. Though model dependent, our measurement represents a factor of 2.5 improvement in precision over the analysis of DR11 on large scales, f*sigma8(z=0.57) = 0.447 +/- 0.028, and is the tightest single constraint on the growth rate of cosmic structure to date. Our measurement is consistent with the Planck LCDM prediction of 0.480 +/- 0.010 at the ~1.9 sigma level. Assuming a halo mass function evaluated at the best fit Planck cosmology, we also find that 10% of CMASS galaxies are satellites in halos of mass M ~ 6 x 10^13 Msun/h. While none of our tests and model generalizations indicate systematic errors due to an insufficiently detailed model of the galaxy-halo connection, the precision of these first results warrant further investigation into the modeling uncertainties and degeneracies with cosmological parameters.
description: 24 pages, 20 figures, submitted to MNRAS. v2 is 27 pages, 23 figures, accepted by MNRAS
Scheme for steady-state preparation of a harmonic oscillator in the first excited state
Creators: name: Borkje, Kjetil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a generic quantum master equation whose dissipative dynamics autonomously stabilizes a harmonic oscillator in the n=1 Fock state. A multi-mode optomechanical system is analyzed and shown to be an example of a physical system obeying this model. We show that the optomechanical setup enables preparation of a mechanical oscillator in a nonclassical steady state, and that this state indeed approaches a single phonon Fock state in the ideal parameter regime. The generic model may be useful in other settings, such as cavity or circuit quantum electrodynamics or trapped ion physics.
description: 4 pages, 3 figures + supplementary (7 pages, 2 figures) v2: Minor changes, added a few references
Positions of equilibrium points for dust particles in the circular restricted three-body problem with radiation
Creators: name: Pastor, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: For a body with negligible mass moving in the gravitational field of a star and one planet in a circular orbit (the circular restricted three-body problem) five equilibrium points exist and are known as the Lagrangian points. The positions of the Lagrangian points are not valid for dust particles because in the derivation of the Lagrangian points is assumed that no other forces beside the gravitation act on the body with negligible mass. Here we determined positions of the equilibrium points for the dust particles in the circular restricted three-body problem with radiation. The equilibrium points are located on curves connecting the Lagrangian points in the circular restricted three-body problem. The equilibrium points for Jupiter are distributed in large interval of heliocentric distances due to its large mass. The equilibrium points for the Earth explain a cloud of dust particles trailing the Earth observed with the Spitzer Space Telescope. The dust particles moving in the equilibrium points are distributed in interplanetary space according to their properties.
description: 19 pages, 7 figures, accepted for publication in MNRAS
Bremsstrahlung photon from a hadronizing quark-gluon plasma
Creators: name: Song, Taesoo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Assuming that quark and antiquark numbers are separately conserved during hadronization, we calculate Bremsstrahlung photon from a hadronizing quark-gluon plasma. The quark and antiquark numbers are obtained from the hadron numbers in the statistical model and the transition amplitudes for the hadronization from the constraint that all quarks and antiquarks must be consumed in the hadronization. Then Bremsstrahlung photon from the hadronization is obtained in the soft photon approximation, and we find that its contribution to the direct photon increases in low-energy heavy-ion collisions and in peripheral collisions where the lifetime of a quark-gluon plasma (QGP) is relatively short.
description: 6 pages, 5 figures
Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter
Creators: name: Heydari-Fard, Malihe
name: Honarvar, Sara Ghassemi
name: Heydari-Fard, Mohaddese
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Motivated by the fact that the universe is dominated by dark matter and dark energy, we consider rotating black holes surrounded by perfect fluid dark matter and study the accretion process in thin disk around such black holes. Here, we are interested in how the presence of dark matter affects the properties of the electromagnetic radiation emitted from a thin accretion disk. For this purpose, we use the Novikov-Thorne model and obtain the electromagnetic spectrum of an accretion disk around a rotating black hole in perfect fluid dark matter and compare with the general relativistic case. The results indicate that for small values of dark matter parameter we considered here, the size of the innermost stable circular orbits would decrease and thus the electromagnetic spectrum of the accretion disk increases. Therefore, disks in the presence of perfect fluid dark matter are hotter and more luminous than in general relativity. Finally, we construct thin accretion disk images around these black holes using the numerical ray-tracing technique. We show that the inclination angle has a remarkable effect on the images, while the effect of dark matter parameter is small.
description: 9 pages(two columns), 9 figures