cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Propagation of light in linear and quadratic GRIN media: The Bohm potential
Creators: name: Asenjo, Felipe A.
name: Hojman, Sergio A.
name: Moya-Cessa, Héctor M.
name: Soto-Eguibar, Francisco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is shown that field propagation in linear and quadratic gradient-index (GRIN) media obeys the same rules of free propagation in the sense that a field propagating in free space has a (mathematical) form that may be {\it exported} to those particular GRIN media. The Bohm potential is introduced in order to explain the reason of such behavior: it changes the dynamics by modifying the original potential. The concrete cases of two different initials conditions for each potential are analyzed.
Brief an [Johann Jacob Grynaeus]
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1589

description: von [Theodor Beza]
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
description: Basel UB KiAr Mscr 18b:Bl.159b
Iniezione ADONE II: strutture S1 ed S2
Creators: name: Placidi, M.
Publisher: name: INFN Open Access Repository
Year: 1973
Subjects: ADONE
Struttura S1
Struttura S2
EI-1

description: Gli schemi di iniezione discussi in seguito sono intesi per il piano orizzontale, ma le relazioni ricavate hanno carattere generale e possono venire applicate rapidamente al caso di iniezione nel piano verticale.
Schulratspräsident des eidgenössischen Polytechnikums, Johann Karl Kappeler (1816-1888), an Wilhelm Fiedler (1832-1912)
Creators: name: Schule, Eidgenössische Polytechnische, Behörden, Lehrkörper und Verwaltung
Publisher: name: [s.n.]
Year: 1878

description: Brief ohne Ortsangabe.
Knappe Mitteilungen zu vorliegenden Schreiben und Stimmung der Schüler
description: ETH-Bibliothek
Quantum phases of two-dimensional $\mathbb{Z}_2$ gauge theory coupled to single-component fermion matter
Creators: name: Borla, Umberto
name: Jeevanesan, Bhilahari
name: Pollmann, Frank
name: Moroz, Sergej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the rich quantum phase diagram of Wegner's theory of discrete Ising gauge fields interacting with $U(1)$ symmetric single-component fermion matter hopping on a two-dimensional square lattice. In particular limits the model reduces to (i) pure $\mathbb{Z}_2$ even and odd gauge theories, (ii) free fermions in a static background of deconfined $\mathbb{Z}_2$ gauge fields, (iii) the kinetic Rokhsar-Kivelson quantum dimer model at a generic dimer filling. We develop a local transformation that maps the lattice gauge theory onto a model of $\mathbb{Z}_2$ gauge-invariant spin $1/2$ degrees of freedom. Using the mapping, we perform numerical density matrix renormalization group calculations that corroborate our understanding of the limits identified above. Moreover, in the absence of the magnetic plaquette term, we reveal signatures of topologically ordered Dirac semimetal and staggered Mott insulator phases at half-filling. At strong coupling, the lattice gauge theory displays fracton phenomenology with isolated fermions being completely frozen and dimers exhibiting restricted mobility. In that limit, we predict that in the ground state dimers form compact clusters, whose hopping is suppressed exponentially in their size. We determine the band structure of the smallest clusters numerically using exact diagonalization. The rich phenomenology discussed in this paper can be probed in analog and digital quantum simulators of discrete gauge theories and in Kitaev spin-orbital liquids.
description: v3: intro now includes a summary of main results together with a new Fig. 1; new results for the confinement transition in the inset of Fig. 10; references added
Traumatic priapism
Creators: name: Matton, Tom
Publisher: name: EURORAD
Year: 2017
Subjects: subject: Arteries / Aorta
subject: Emergency
subject: Genital / Reproductive system male
subject: Trauma
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Spectral Doppler
subject: Diagnostic procedure
subject: Blood
subject: Cavitation
subject: Fistula
subject: Haemodynamics / Flow dynamics
subject: Haemorrhage
subject: Trauma

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 35 years
description: Clinical History: While moving his furniture this patient slipped and sustained a blunt perineal trauma with minor hematoma. After three days he was suffering from a painless partially erect penis accompanied by difficulty attaining an erection sufficient for sexual interc... Final Diagnosis: High-flow priapism
Schulratspräsident des eidgenössischen Polytechnikums, Johann Karl Kappeler (1816-1888), an Wilhelm Fiedler (1832-1912)
Creators: name: Schule, Eidgenössische Polytechnische, Behörden, Lehrkörper und Verwaltung
Publisher: name: [s.n.]
Year: 1878

description: Brief aus Zürich.
U.a. Erläuterung des Schreibens an die Studenten der polytechnischen Schule
description: ETH-Bibliothek
Campo di un campo magnetico in simmetria cilindrica a partire da una soluzione in simmetria piana (MAGNET)
Creators: name: Biagini, M. E.
Publisher: name: INFN Open Access Repository
Year: 1985
Subjects: ADONE
MAGNET
EC-3

description: Si vuole conoscere il campo magnetico di un solenoide avvolto da un mantello di ferro e con simmetria in 𝜑(B𝜑= 0) a partire dalla soluzione nota (programma MAGNET) in due di mensioni in simmetria piana. Spaccare il solenoide lungo l'asse 2 (vedi figura) equivale ad un cambiamento di variabili da (r, z) ad (x, z). A priori si potrebbe pensare che i campi magnetici calcolati nelle due configurazioni concidano.
Airy eigenstates and their relation to coordinate eigenstates
Creators: name: Anaya-Contreras, Jorge A.
name: Zúñiga-Segundo, Arturo
name: Moya-Cessa, Héctor M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the eigenvalue problem for a linear potential Hamiltonian and, by writing Airy equation in terms of momentum and position operators define Airy states. We give a solution of the Schrödinger equation for the symmetrical linear potential in terms of the squeeze and displacement operators. Finally, we write the unit operator in terms of Airy states and find a relation between them and position and momentum eigenstates.
description: 9 pages
Könyvismertetés : Declerck, C. and Boone, C. (2015): Neuroeconomics of Prosocial Behavior: The Compassionate Egoist. Academic Press
Creators: name: Galambos, Attila
Publisher: name: Eötvös Loránd Tudományegyetem Pedagógiai és Pszichológiai Kar
Year: 2016

description: Alkalmazott Pszichológia, vol. 16. issue 4. ISSN 1419-872X
A generalized Powers averaging property for commutative crossed products
Creators: name: Amrutam, Tattwamasi
name: Ursu, Dan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 37A55, 46L55, 46L89, 47L65

description: We prove a generalized version of Powers' averaging property that characterizes simplicity of reduced crossed products $C(X) \rtimes_λG$, where $G$ is a countable discrete group, and $X$ is a compact Hausdorff space which $G$ acts on minimally by homeomorphisms. As a consequence, we generalize results of Hartman and Kalantar on unique stationarity to the state space of $C(X) \rtimes_λG$ and to Kawabe's generalized space of amenable subgroups $\operatorname{Sub}_a(X,G)$. This further lets us generalize a result of the first named author and Kalantar on simplicity of intermediate C*-algebras. We prove that if $C(Y) \subseteq C(X)$ is an inclusion of unital commutative $G$-C*-algebras with $X$ minimal and $C(Y) \rtimes_λG$ simple, then any intermediate C*-algebra $A$ satisfying $C(Y) \rtimes_λG \subseteq A \subseteq C(X) \rtimes_λG$ is simple.
description: 24 pages; To appear in Transactions of the American Mathematical Society. This is the accepted manuscript, which includes all changes requested by the referee
Retrieving High-Dimensional Quantum Steering From a Noisy Environment with N Measurement Settings
Creators: name: Qu, Rui
name: Wang, Yunlong
name: An, Min
name: Wang, Feiran
name: Quan, Quan
name: Li, Hongrong
name: Gao, Hong
name: Li, Fuli
name: Zhang, Pei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the most often implied benefits of high-dimensional (HD) quantum systems is to lead to stronger forms of correlations, featuring increased robustness to noise. Here, we experimentally demonstrate the $n$-setting linear HD quantum steering criterion. We verify the large violation of the steering inequalities without full-state tomography. The lower bound of the violation is $2.24\pm0.01$ in 11 dimensions, exceeding the bound ($V<2$) of 2-setting criteria. Hence, a higher strength of steering has been revealed. Moreover, we demonstrate the method for enhancing the noise robustness without increasing dimension, alternatively, by increasing measurement settings. Using the entanglement in 11 dimensions, we experimentally retrieve steering nonlocality with $63.4\pm1.4\%$ isotropic noise fraction, surpassing the $50\%$ limitation of 2-setting criteria. Our work offers the potential for practical one-sided device-independent quantum information processing that tolerates the noisy environment, lossy detection, and transcends the present transmission distance limitation.
Risultati del programma "Slac Electron Trajectory Program" per il prototipo pulsato del cannone ad elettroni per LEAR
Creators: name: Guiducci, S.
Publisher: name: INFN Open Access Repository
Year: 1982
Subjects: ADONE
Slac Electron Trajectory Program
LEAR
EC-2

description: Il cannone è costituito di due parti: una prima parte (fino al 1° elettrodo) in cui il campo elettrico assiale E, è crescente secondo l'ottica di Pierce ed una parte (i tre elettrodi successivi) ad ottica risonante, in cui il campo elettrico decresce. Per scegliere l'inclinazione del 1° elettrodo e dell'elettrodo focheggiante del catodo si è supposto che il 1° elettrodo fosse chiuso. In figura 1 si vede l'output del programma con il disegno degli elettrodi, le linee equi potenziali e le traiettorie degli elettroni.
Bohm potential is real and its effects are measurable
Creators: name: Hojman, Sergio A.
name: Asenjo, Felipe A.
name: Moya-Cessa, Héctor M.
name: Soto-Eguibar, Francisco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze Bohm's potential effects both in the realms of Quantum Mechanics and Optics, as well as in the study of other physical phenomena described in terms of classical and quantum wave equations. We approach this subject by using theoretical arguments as well as experimental evidence. We find that the effects produced by Bohm's potential are both theoretically responsible for the early success of Quantum Mechanics correctly describing atomic and nuclear phenomena and, more recently, by confirming surprising accelerating behavior of free waves and particles experimentally, for instance.
description: 4 pages, no figures, Accepted in Optik
Studio della traiettoria di un elettrone in un toroide
Creators: name: Biagini, M. E.
Publisher: name: INFN Open Access Repository
Year: 1982
Subjects: ADONE
Toroide
EC-1

description: Studiamo il problema per approssimazioni successive. A) Elettrone entrante ortogonale al toroide di campo magnetico costante (caso non fisico, per il teorema della circuitazione, ma semplice da risolvere); B) Analogia con il caso di un oscillatore armonico forzato (sinusoide di piccola ampiezza nel limite di campo \overrightarrow{Bt}, molto forte); C) Caso di un campo magnetico \overrightarrow{Bt} non uniforme ; D) Traiettoria dell'elettrone nel piano z (nel caso \overrightarrow{Bt} = cost); E) Caso di campo magnetico toroidale costante + campo magnetico dipolare.
Multiple giant eruptions and X-ray emission in the recoiling AGN/LBV candidate SDSS1133
Creators: name: Kokubo, Mitsuru
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a comprehensive analysis of 20 years worth of multi-color photometric light curves, multi-epoch optical spectra, and X-ray data of an off-nuclear variable object SDSS1133 in Mrk 177 at $z=0.0079$. The UV-optical light curves reveal that SDSS1133 experienced four outbursts in 2001, 2014, 2019, and 2021. The persistent UV-optical luminosity in the non-outbursting state is $\sim 10^{41}$ erg/s with small-scale flux variations, and peak luminosities during the outbursts reach $\sim 10^{42}$ erg/s. The optical spectra exhibit enduring broad hydrogen Balmer P-Cygni profiles with the absorption minimum at $\sim -2,000$ km/s, indicating the presence of fast moving ejecta. {\it Chandra} detected weak X-ray emission at a $0.3-10$ keV luminosity of $L_{X} = 4 \times 10^{38}$ erg/s after the 2019 outburst. These lines of evidence suggests that SDSS1133 is an extreme luminous blue variable (LBV) star experiencing multiple giant eruptions with interactions of the ejected shell with different shells and/or circumstellar medium (CSM), and disfavors the recoiling Active Galactic Nuclei (AGN) scenario suggested in the literature. We suggest that pulsational pair-instability may provide a viable explanation for the multiple energetic eruptions in SDSS1133. If the current activity of SDSS1133 is a precursor of a supernova explosion, we may be able to observe a few additional giant eruptions and then the terminal supernova explosion or collapse to a massive black hole in future observations.
description: Accepted for publication in MNRAS. 30 pages, 17 figures, 5 tables. Table 1 and optical spectra are available online as ancillary files for this preprint
Performance of A.C.O. as a positron accumulator for Adone
Creators: name: Preger, M.
Publisher: name: INFN Open Access Repository
Year: 1989
Subjects: ADONE
ACO
G-96

description: In order to improve the performance of Adone as an electron-positron storage ring, it has been proposed [1] to use a small ring with a short damping time at the end of the Linac as a buffer for positrons. Such a machine should be as simple and reliable as possible. Therefore, instead of storing the whole positron current in the accumulator before injecting it into Adone, we propose to inject only a limited number of Linac pulses into the buffer, transferring the beam to the main ring at a rate dictated by the Adone damping time. In this paper a study is presented on the modifications necessary to use the Orsay ring ACO for this purpose, and the performance of the whole injection system is estimated.
Constructive and Destructive Dialogues between Victims and Offenders : Testing the Needs-Based Model of Reconciliation in a Restorative Justice Setting
Creators: name: Z. Papp, Zsuzsanna
name: Fellegi, Borbála
name: Szegő, Dóra
Publisher: name: Eötvös Loránd Tudományegyetem Pedagógiai és Pszichológiai Kar
Year: 2016

description: Alkalmazott Pszichológia, vol. 16. issue 4. ISSN 1419-872X
Gibbs states of the Hopfield model with extensively many patterns
Creators: name: Bovier, Anton
name: Gayrard, Véronique
name: Picco, Pierre
Publisher: name: Weierstrass Institute
Year: 1994
Subjects: subject: Hopfield model
subject: Gibbs states
subject: self-averaging
subject: spin glasses
subject: 82B44
subject: 82C32

description: We consider the Hopfield model with M(N) = αN patterns, where N is the number of neurons. We show that if α is sufficiently small and the temperature sufficiently low, then there exist disjoint Gibbs states for each of the stored patterns, almost surely with respect to the distribution of the random patterns. This solves a problem left open in previous work [BGPl]. The key new ingredient is a self averaging result on the free energy functional. This result has considerable additional interest and some consequences are discussed. A similar result for the free energy of the Sherrington-Kirkpatrick model is also given.
Brief an Johann Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1589

description: von [Theodor] Beza
description: Mit rotem Siegel
description: Unterschrift Autograph
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
A Universal Representation for Quantum Commuting Correlations
Creators: name: Araiza, Roy
name: Russell, Travis
name: Tomforde, Mark
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81P40 (Primary), 46L07 (Secondary)

description: We explicitly construct an Archimedean order unit space whose state space is affinely isomorphic to the set of quantum commuting correlations. Our construction only requires fundamental techniques from the theory of order unit spaces and operator systems. Our main results are achieved by characterizing when a finite set of positive contractions in an Archimedean order unit space can be realized as a set of projections on a Hilbert space.
description: Comments to the authors are welcome! v2: Final version as appears in Annales Henri Poincar\'e (2022)
Crocidura pullata G. S. Miller 1911
Creators: name: Mittermeier, Russell A.
name: Wilson, Don E.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Soricomorpha
Soricidae
Crocidura
Crocidura pullata

description: 311. Kashmir White-toothed Shrew Crocidura pullata French: Crocidure sombre / German: KashmirWeizahnspitzmaus / Spanish: Musarafa de Cachemira Other common names: Asiatic White-toothed Shrew, Dusky Shrew Taxonomy. Crocidura pullata G. S. Miller, 1911, “ Kotihar, Kashmir [India] (altitude 7000 feet [= 2134 m].” Confused at various times with West Eu- ropean species of Crocidura, it is currently recognized as distinct from Western Asian and Chinese species on the basis of a cranial morphometrics analysis by Jiang Xuelong and R. S. Hoffmann in 2001. Monotypic. Distribution. Endemic to the Western Himalaya in Jammu and Kashmir, India and Pakistan. Descriptive notes. Head—body 60-90 mm, tail 39-53 mm, ear 5-10 mm, hindfoot 11-16 mm. No specific data are available for body weight. Pelage of the Kashmir Whitetoothed Shrew is soft and dense; dorsal color dark buffy brown or grayish brown to dark gray brown, some specimens with a brown or silvery wash, ventrally paler. Tail 55-76% of head-body length, brown above, paler below, bristle hairs over the length of the tail. Habitat. Moist temperate forest or banks of streams in dry and open hillsides with adequate shrub and bush ground cover; the Kashmir White-toothed Shrew may also be found in gardens and houses. Altitudinal range is 1829-2652 m. Food and Feeding. No information. Breeding. No information. Activity patterns. Kashmir White-toothed Shrews are terrestrial and at least partially nocturnal or crepuscular, as the remains ofthis species have been recorded from owl pellets. Movements, Home range and Social organization. In Pakistan, recorded in pellets of owls, including the mountain scops-owl (Otus spilocephalus), the Indian scops-owl (O. bakkamoena) and the collared owlet (Glaucidium brodier). Status and Conservation. Classified as Data Deficient on The IUCN Red List. Bibliography. Jenkins (2013), Jiang Xuelong & Hoffmann (2001), Manzoor et al. (2013), Miller (1911), Molur (2016¢), Roberts (1997).
description: Published as part of Russell A. Mittermeier & Don E. Wilson, 2018, Soricidae, pp. 332-551 in Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos, Barcelona :Lynx Edicions on pages 506-507, DOI: 10.5281/zenodo.6870843
Wilhelm Fiedler (1832-1912) an den Schulratspräsident des eidgenössischen Polytechnikums, Johann Karl Kappeler (1816-1888), Briefkopie
Creators: name: Fiedler, Wilhelm
Publisher: name: [s.n.]
Year: 1879

description: Briefkopie (zum Teil nicht leserlich).
U.a. Ausführungen zur Entwicklung der Stundenzahlen und zum Unterricht seit seiner Berufung.
Entspricht dem Original der Akteneingänge des Schulrats, SR 3:1879, Nr. 208, vom 20. Feb. 1879.
(Kopien ab Fiche 10/12 von SR 3:1879 zusätzl. vorh.)
Digitalisat der Briefkopie und zusätzlich eingefügt Digitalisat ab Original, das bei den Akten des Schulrats liegt
description: ETH-Bibliothek
Brief an [Johann] Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1589

description: von [Theodor Beza]
description: Mit rotem Siegel
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
Fairness in Credit Scoring: Assessment, Implementation and Profit Implications
Creators: name: Kozodoi, Nikita
name: Jacob, Johannes
name: Lessmann, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Risk Management (q-fin.RM)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: The rise of algorithmic decision-making has spawned much research on fair machine learning (ML). Financial institutions use ML for building risk scorecards that support a range of credit-related decisions. Yet, the literature on fair ML in credit scoring is scarce. The paper makes three contributions. First, we revisit statistical fairness criteria and examine their adequacy for credit scoring. Second, we catalog algorithmic options for incorporating fairness goals in the ML model development pipeline. Last, we empirically compare different fairness processors in a profit-oriented credit scoring context using real-world data. The empirical results substantiate the evaluation of fairness measures, identify suitable options to implement fair credit scoring, and clarify the profit-fairness trade-off in lending decisions. We find that multiple fairness criteria can be approximately satisfied at once and recommend separation as a proper criterion for measuring the fairness of a scorecard. We also find fair in-processors to deliver a good balance between profit and fairness and show that algorithmic discrimination can be reduced to a reasonable level at a relatively low cost. The codes corresponding to the paper are available on GitHub.
description: Accepted to European Journal of Operational Research
Longitudinal coupled-bunch instabilities in ADONE
Creators: name: Bartalucci, Sergio
Publisher: name: INFN Open Access Repository
Year: 1988
Subjects: ADONE
Coupled-bunch
Beam spectrum
G-95

description: The new 51.4 MHz cavity (1), which was recently installed on ADONE, shows a number of high-Q parasitic resonances such that coupled-bunch oscillations are very likely to occur. Even if at this stage it is difficult to say whether these oscillations can really spoil the machine performances, a preliminary study seems worthwhile, just in order to get a feeling of the actual situation. Since parasitic mode measurements on the cavity are not yet completely analyzed and are limited to Q-values anyway, we shall present some examples which make use of the calculated shunt impedances and Q-values of the cavity as provided by the computer code URMEL (2). The goal of this note is to show the limits which have to be imposed on shunt impedances and Q-values versus frequency of the Higher Order Modes ( HOM ) in order to make the 18 ADONE bunches stable at a total current of 100 mA. The longitudinal beam oscillations are treated first, since they seem more unstable in small machines than the transverse ones, as confirmed by the experience with other storage rings. We follow the guidelines of the work on EPA coupled-bunch instabilities by K. Huebner (3), who in turn makes use of classical Sacherer 's approach (4,5). No much explanation is given here, all this being well-known for years. Standard ADONE parameters are taken from internal notes (6,7).
Generation of Talbot-like fields
Creators: name: Anaya-Contreras, Jorge A.
name: Zúñiga-Segundo, Arturo
name: Sánchez-de-la-Llave, D.
name: Moya-Cessa, Héctor M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an integral of diffraction based on particular eigenfunctions of the Laplacian in two dimensions. We show how to propagate some fields, in particular a Bessel field, a superposition of Airy beams, both over the square root of the radial coordinate, and show how to construct a field that reproduces itself periodically in propagation, i.e., a field that renders the Talbot effect. Additionally, it is shown that the superposition of Airy beams produces self-focusing.
description: 5 pages, 4 figures
Caratteristiche di Adone con wiggler e wiggler superconduttore
Creators: name: Preger, M.
Publisher: name: INFN Open Access Repository
Year: 1988
Subjects: ADONE
Wiggler
Wiggler superconduttore
G-94

description: Per valutare l'effetto combinato del wiggler (W) e del wiggler superconduttore (WS) sulle funzioni ottiche e sulle caratteristiche globali di Adone (A), sono stati calcolati gli integrali di sincrotrone [1] sulle mappe di campo a suo tempo misurate per il wiggler del PWA. I risultati relativi al wiggler superconduttore ad 1 polo a 6 Tesla sono riportati in [2].
Engineering two-mode squeezed vacuum-like states by using the Bohm potential
Creators: name: Moya-Cessa, Héctor M.
name: Asenjo, Felipe A.
name: Hojman, Sergio A.
name: Soto-Eguibar, Francisco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that two-mode squeezed vacuum-like states may be engineered in the Bohm-Madelung formalism by adequately choosing the phase of the wavefunction. The difference between our wavefunction and the one of the squeezed vacuum states is given precisely by the phase we choose.
description: 8 pages, 2 figures
Brief an [Johann] Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1589

description: von [Theodor] Beza
description: Mit Siegel
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
Brief an [Johann] Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1590

description: von [Theodor] Beza
description: Mit Siegel
description: Unterschrift Autograph
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
Considerazioni sul rate di iniezione di positroni in Adone
Creators: name: Preger, M.
Publisher: name: INFN Open Access Repository
Year: 1988
Subjects: ADONE
G-93

description: 1) Aumento di rendimento di conversione; 2) Aumento della durata dell'impulso linac; 3) Diminuzione del tempo di damping.
Solvable dilation model of $\cal PT$-symmetric systems
Creators: name: Huang, Minyi
name: Lee, Ray-Kuang
name: Wang, Qing-hai
name: Zhang, Guo-Qiang
name: Wu, Junde
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The dilation method is a practical way to experimentally simulate non-Hermitian, especially $\cal PT$-symmetric quantum systems. However, the time-dependent dilation problem cannot be explicitly solved in general. In this paper, we present a simple yet non-trivial exactly solvable dilation problem with two dimensional time-dependent $\cal PT$-symmetric Hamiltonian. Our system is initially set in the unbroken $\cal PT$-symmetric phase and later goes across the so-called exceptional point and enters the broken $\cal PT$-symmetric phase. For this system, the dilated Hamiltonian and the evolution of $\cal PT$-symmetric system are analytically worked out. Our result clearly showed that the exceptional points do not have much physical relevance in a \textit{time-dependent} system.
description: 9 pages, 4 figures, close to the published version
Brief an [Johann] Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1590

description: von [Theodor] Beza
description: Unterschrift Autograph
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
BASICS OF PERFORMING SKILLS IN PERCUSSION INSTRUMENTS
Creators: name: Samatov, Temur
Publisher: name: Zenodo
Year: 2024

description: The rich musical heritage of Uzbekistan cannot be imagined without percussion instruments. These instruments are important in the preservation and development of national musical traditions. In this article, we tried to consider the use and importance of percussion instruments in the musical culture of Uzbekistan, how widespread they are and what role they play in musical works.
Driving quantum systems with repeated conditional measurements
Creators: name: Liu, Quancheng
name: Ziegler, Klaus
name: Kessler, David A.
name: Barkai, Eli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the effect of conditional null measurements on a quantum system and find a rich variety of behaviors. Specifically, quantum dynamics with a time independent $H$ in a finite dimensional Hilbert space are considered with repeated strong null measurements of a specified state. We discuss four generic behaviors that emerge in these monitored systems. The first arises in systems without symmetry, along with their associated degeneracies in the energy spectrum, and hence in the absence of dark states as well. In this case, a unique final state can be found which is determined by the largest eigenvalue of the survival operator, the non-unitary operator encoding both the unitary evolution between measurements and the measurement itself. For a three-level system, this is similar to the well known shelving effect. Secondly, for systems with built-in symmetry and correspondingly a degenerate energy spectrum, the null measurements dynamically select the degenerate energy levels, while the non-degenerate levels are effectively wiped out. Thirdly, in the absence of dark states, and for specific choices of parameters, two or more eigenvalues of the survival operator match in magnitude, and this leads to an oscillatory behavior controlled by the measurement rate and not solely by the energy levels. Finally, when the control parameters are tuned, such that the eigenvalues of the survival operator all coalesce to zero, one has exceptional points that corresponds to situations that violate the null measurement condition, making the conditional measurement process impossible.
Brief an [Johann] Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1590

description: von [Theodor] Beza
description: Mit Gemmensiegel
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
Fair Coin Flipping: Tighter Analysis and the Many-Party Case
Creators: name: Buchbinder, Niv
name: Haitner, Iftach
name: Levi, Nissan
name: Tsfadia, Eliad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In a multi-party fair coin-flipping protocol, the parties output a common (close to) unbiased bit, even when some adversarial parties try to bias the output. In this work we focus on the case of an arbitrary number of corrupted parties. Cleve [STOC 1986] has shown that in any such $m$-round coin-flipping protocol, the corrupted parties can bias the honest parties' common output bit by $Θ(1/m)$. For more than two decades, the best known coin-flipping protocol was the one of Awerbuch et al. [Manuscript 1985], who presented a $t$-party, $m$-round protocol with bias $Θ(t/\sqrt{m})$. This was changed by the breakthrough result of Moran et al. [TCC 2009], who constructed an $m$-round, two-party coin-flipping protocol with optimal bias $Θ(1/m)$. Haitner and Tsfadia [STOC 2014] constructed an $m$-round, three-party coin-flipping protocol with bias $O(\log^3m / m)$. Still for the case of more than three parties, the best known protocol remained the $Θ(t/\sqrt{m})$-bias protocol of Awerbuch et al. We make a step towards eliminating the above gap, presenting a $t$-party, $m$-round coin-flipping protocol, with bias $O(\frac{t^4 \cdot 2^t \cdot \sqrt{\log m}}{m^{1/2+1/\left(2^{t-1}-2\right)}})$ for any $t\le \tfrac12 \log\log m$. This improves upon the $Θ(t/\sqrt{m})$-bias protocol of Awerbuch et al., and in particular, for $t\in O(1)$ it is an $1/m^{\frac12 + Θ(1)}$-bias protocol. For the three-party case, it is an $O(\sqrt{\log m}/m)$-bias protocol, improving over the $O(\log^3m / m)$-bias protocol of Haitner and Tsfadia. Our protocol generalizes that of Haitner and Tsfadia, by presenting an appropriate recovery protocol for the remaining parties to interact in, in the case that some parties abort or are caught cheating. We prove the fairness of the new protocol by presenting a new paradigm for analyzing fairness of coin-flipping protocols.
description: Published in SODA 2017
Efficient LiDAR Odometry for Autonomous Driving
Creators: name: Zheng, Xin
name: Zhu, Jianke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: LiDAR odometry plays an important role in self-localization and mapping for autonomous navigation, which is usually treated as a scan registration problem. Although having achieved promising performance on KITTI odometry benchmark, the conventional searching tree-based approach still has the difficulty in dealing with the large scale point cloud efficiently. The recent spherical range image-based method enjoys the merits of fast nearest neighbor search by spherical mapping. However, it is not very effective to deal with the ground points nearly parallel to LiDAR beams. To address these issues, we propose a novel efficient LiDAR odometry approach by taking advantage of both non-ground spherical range image and bird's-eye-view map for ground points. Moreover, a range adaptive method is introduced to robustly estimate the local surface normal. Additionally, a very fast and memory-efficient model update scheme is proposed to fuse the points and their corresponding normals at different time-stamps. We have conducted extensive experiments on KITTI odometry benchmark, whose promising results demonstrate that our proposed approach is effective.
Brief an [Johann] Jacob Grynaeus
Creators: name: Bèze, Théodore de
Publisher: name: [s.n.]
Year: 1590

description: von [Theodor Beza]
description: Mit Gemmensiegel
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Digitalisierung=Digitization=Numérisation TIFF 05.07.2015
Parasecia thalurania
Creators: name: Stekolnikov, Alexandr A.
name: Capek, Miroslav
name: Literák, Ivan
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Trombiculidae
Parasecia
Parasecia thalurania

description: Parasecia thalurania (Brennan, 1969)
(Fig. 20)
Fonsecia (Parasecia) thalurania Brennan, 1969: 663, fig. 1.
Parasecia thalurania: Goff 1992b: 967; Bassini-Silva et al. 2020: 167, figs. 21, 22.
Diagnosis. SIF = 7BS-N-3-3111.0000; fsp = 7.7.7; fCx = 1.1.1; fSt = 2.2; fPp = B/B/NNN; fSc: PL> AM> AL; Ip = 643–691; fD = 2H-(8–10)-(9–12)+(24–40); DS = 44–63; V = 27–42; NDV = 71–99. Cheliceral blade with ventral tooth in addition to tricuspid cap; scutum nearly rectangular, with anterolateral shoulders and sparse puncta; sensilla heavily branched in distal half; sensillary bases slightly anterior to level of PL (PSB—P-PL = 3–5 µm). Standard measurements of examined specimens given in Table 9.
Distribution. Brazil (Bassini-Silva et al. 2020), and Peru (this study).
Hosts. Glyphorynchus spirurus (Passeriformes: Furnariidae), Thalurania furcata (Gmelin) (Apodiformes: Trochilidae) (Bassini-Silva et al. 2020).
Localization on hosts. Breast and cloaca (G. spirurus No IQ26).
Material examined. Nine larvae (ZIN 8860–8862, 8864–8869) ex G. spirurus No IQ 26, PERU: Iquitos, National Reserve Allpahuayo Mishana, 15 August 2011; 9 larvae (ZIN 8896–8904) ex one unnumbered G. spirurus, National Reserve Allpahuayo Mishana, 14 August 2011.
description: Published as part of Stekolnikov, Alexandr A., Capek, Miroslav & Literák, Ivan, 2022, New species and records of chiggers (Acariformes: Trombiculidae) from birds of the Neotropics, pp. 501-552 in Zootaxa 5141 (6) on pages 531-532, DOI: 10.11646/zootaxa.5141.6.1, http://zenodo.org/record/6598054
Dark Sector to Restore Cosmological Concordance
Creators: name: Allali, Itamar J.
name: Hertzberg, Mark P.
name: Rompineve, Fabrizio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop a new phenomenological model that addresses current tensions between observations of the early and late Universe. Our scenario features: (i) a decaying dark energy fluid (DDE), which undergoes a transition at $z \sim 5,000$, to raise today's value of the Hubble parameter -- addressing the $H_0$ tension, and (ii) an ultra-light axion (ULA), which starts oscillating at $z\gtrsim 10^4$, to suppress the matter power spectrum -- addressing the $S_8$ tension. Our Markov Chain Monte Carlo analyses show that such a Dark Sector model fits a combination of Cosmic Microwave Background (CMB), Baryon Acoustic Oscillations, and Large Scale Structure (LSS) data slightly better than the $Λ$CDM model, while importantly reducing both the $H_0$ and $S_8$ tensions with late universe probes ($\lesssim 3σ$). Combined with measurements from cosmic shear surveys, we find that the discrepancy on $S_8$ is reduced to the $1.4σ$ level, and the value of $H_0$ is further raised. Adding local supernovae measurements, we find that the $H_0$ and $S_8$ tensions are reduced to the $1.4σ$ and $1.2σ$ level respectively, with a significant improvement $Δχ^2\simeq -18$ compared to the $Λ$CDM model. With this complete dataset, the DDE and ULA are detected at $\simeq 4σ$ and $\simeq2σ$, respectively. We discuss a possible particle physics realization of this model, with a dark confining gauge sector and its associated axion, although embedding the full details within microphysics remains an urgent open question. Our scenario will be decisively probed with future CMB and LSS surveys.
description: 6+22 pages. v2: updated numerical results in the main text and in abstract; results for 2-parameters submodel and for different axion masses added to appendices; new references added. v3: typos corrected, additional comments on AIC and on "Olympics" ranking
On the Evaluation of the Eigendecomposition of the Airy Integral Operator
Creators: name: Shen, Zewen
name: Serkh, Kirill
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The distributions of the $k$-th largest level at the soft edge scaling limit of Gaussian ensembles are some of the most important distributions in random matrix theory, and their numerical evaluation is a subject of great practical importance. One numerical method for evaluating the distributions uses the fact that they can be represented as Fredholm determinants involving the so-called Airy integral operator. When the spectrum of the integral operator is computed by discretizing it directly, the eigenvalues are known to at most absolute precision. Remarkably, the Airy integral operator is an example of a so-called bispectral operator, which admits a commuting differential operator that shares the same eigenfunctions. In this manuscript, we develop an efficient numerical algorithm for evaluating the eigendecomposition of the Airy integral operator to full relative precision, using the eigendecomposition of the commuting differential operator. This allows us to rapidly evaluate the distributions of the $k$-th largest level to full relative precision rapidly everywhere except in the left tail, where they are computed to absolute precision. In addition, we characterize the eigenfunctions of the Airy integral operator, and describe their extremal properties in relation to an uncertainty principle involving the Airy transform. We observe that the Airy integral operator is fairly universal, and we describe a separate application to Airy beams in optics. Using the eigenfunctions, we compute a finite-energy Airy beam that is optimal, in the sense that the beam is both maximally concentrated, and maximally non-diffracting and self-accelerating.
description: 48 pages, 3 tables, 8 figures
Floccinaucinihilipilification: Semisimple extensions of the Standard Model gauge algebra
Creators: name: Allanach, B C
name: Gripaios, Ben
name: Tooby-Smith, Joseph
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how one may classify all semisimple algebras containing the $\mathfrak{su}(3)\oplus \mathfrak{su}(2) \oplus \mathfrak{u}(1)$ symmetry of the Standard Model and acting on some given matter sector, enabling theories beyond the Standard Model with unification (partial or total) of symmetries (gauge or global) to be catalogued. With just a single generation of Standard Model fermions plus a singlet neutrino, the only {gauge} symmetries correspond to the well-known algebras $\mathfrak{su}(5),\mathfrak{so}(10),$ and $\mathfrak{su}(4)\oplus \mathfrak{su}(2) \oplus \mathfrak{su}(2)$, but with two or more generations a limited number of exotic symmetries mixing flavour, colour, and electroweak degrees of freedom become possible. We provide a complete catalogue in the case of 3 generations or fewer and outline how our method generalizes to cases with additional matter.
description: 13 pages. v3: Minor corrections due to a coding error in the lists of maximal and minimal algebras; references added
Accelerating Large-Scale-Structure data analyses by emulating Boltzmann solvers and Lagrangian Perturbation Theory
Creators: name: Aricò, Giovanni
name: Angulo, Raul E.
name: Zennaro, Matteo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The linear matter power spectrum is an essential ingredient in all theoretical models for interpreting large-scale-structure observables. Although Boltzmann codes such as CLASS or CAMB are very efficient at computing the linear spectrum, the analysis of data usually requires $10^4$-$10^6$ evaluations, which means this task can be the most computationally expensive aspect of data analysis. Here, we address this problem by building a neural network emulator that provides the linear theory (total and cold) matter power spectrum in about one millisecond with 0.2% (0.5%) accuracy over redshifts $z \le 3$ ($z \le 9$), and scales $10^{-4} \le k \, [h {\rm Mpc^{-1}}] < 50$. We train this emulator with more than 200,000 measurements, spanning a broad cosmological parameter space that includes massive neutrinos and dynamical dark energy. We show that the parameter range and accuracy of our emulator is enough to get unbiased cosmological constraints in the analysis of a Euclid-like weak lensing survey. Complementing this emulator, we train 15 other emulators for the cross-spectra of various linear fields in Eulerian space, as predicted by 2nd-order Lagrangian Perturbation theory, which can be used to accelerate perturbative bias descriptions of galaxy clustering. Our emulators are specially designed to be used in combination with emulators for the nonlinear matter power spectrum and for baryonic effects, all of which are publicly available at http://www.dipc.org/bacco.
description: 15 pages, 7 figures. Published in Open Research Europe
Infill topology and shape optimisation of lattice-skin structures
Creators: name: Xiao, Xiao
name: Cirak, Fehmi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Lattice-skin structures composed of a thin-shell skin and a lattice infill are widespread in nature and large-scale engineering due to their efficiency and exceptional mechanical properties. Recent advances in additive manufacturing, or 3D printing, make it possible to create lattice-skin structures of almost any size with arbitrary shape and geometric complexity. We propose a novel gradient-based approach to optimising both the shape and infill of lattice-skin structures to improve their efficiency further. The respective gradients are computed by fully considering the lattice-skin coupling while the lattice topology and shape optimisation problems are solved in a sequential manner. The shell is modelled as a Kirchhoff-Love shell and analysed using isogeometric subdivision surfaces, whereas the lattice is modelled as a pin-jointed truss. The lattice consists of many cells, possibly of different sizes, with each containing a small number of struts. We propose a penalisation approach akin to the SIMP (solid isotropic material with penalisation) method for topology optimisation of the lattice. Furthermore, a corresponding sensitivity filter and a lattice extraction technique are introduced to ensure the stability of the optimisation process and to eliminate scattered struts of small cross-sectional areas. The developed topology optimisation technique is suitable for non-periodic, non-uniform lattices. For shape optimisation of both the shell and the lattice, the geometry of the lattice-skin structure is parameterised using the free-form deformation technique. The topology and shape optimisation problems are solved in an iterative, sequential manner. The effectiveness of the proposed approach and the influence of different algorithmic parameters are demonstrated with several numerical examples.
description: 20 pages, 17 figures