cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optically-induced Umklapp shift currents in striped cuprates
Creators: name: Dolgirev, Pavel E.
name: Michael, Marios H.
name: Curtis, Jonathan B.
name: Parker, Daniel E.
name: Nicoletti, Daniele
name: Buzzi, Michele
name: Fechner, Michael
name: Cavalleri, Andrea
name: Demler, Eugene
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by recent experiments that observed low-frequency second-order optical responses in doped striped superconductors, here we investigate the nonlinear electrodynamics of systems exhibiting a charge density wave (CDW) order parameter. Due to the Bragg scattering off the CDW order, an incoming spatially homogeneous electric field in addition to zero momentum current generates Umklapp currents that are modulated in space at momenta of the reciprocal CDW lattice. In particular, here we predict and microscopically evaluate the Umklapp shift current, a finite momentum analog of the regular shift current which represents the second-order optical process that downconverts homogeneous AC electric field into low-frequency, zero momentum current. Specifically, we evaluate real-time response functions within mean-field theory via the Keldysh technique and use the Peierls substitution to compute observables at finite momenta in lattice models. We find that systems with certain lattice symmetries (such as inversion symmetry), where the regular shift current is disallowed, may give rise to the Umklapp one. We apply our framework to investigate lattice symmetries in layered materials with helical-like stripes and show that both types of shift currents provide insight into the nature of intertwined phases of matter. Finally, we discuss the relation of our findings to recent experiments in striped superconductors.
title: Sicherung von Angriffsspuren bei Ransomwareangriffen auf KMUs
Creators: name: Christ, Louis
Year: 2022

description: Die Arbeitsfähigkeit vieler Unternehmen basiert heutzutage auf deren IT-Systemen. Diese können durch einen Ransomware-Angriff stillgelegt werden, womit die Unternehmen arbeitsunfähig sind, weiterhin können wichtige Daten verloren gehen. Aus personellen und finanziellen Gründen ist eine Cyberforenische-Untersuchung von einem ausgebildeten Experten für kleine und mittlere Unternehmen oft nicht umsetzbar. In dieser Arbeit galt es herauszufinden, ob es möglich ist, ein von Ransomware betroffenes System zu sichern und zu analysieren, ohne eine entsprechende Ausbildung oder teure Analysesoftware. Es ist möglich, mit Hilfe eines im Rahmen dieser Arbeit entwickelten Leitfadens und dem Tool Autopsy - Digital Forensics die Analyse durchzuführen, vorausgesetzt es sind gute IT-Kenntnisse vorhanden. Der Untersuchende wird dabei von der Sicherung der Daten bis zur Auswertung der Spuren geleitet. Er erarbeitet sich eine Antwort auf die Frage, welche Ransomware es war, wann der Angriff stattgefunden hat und wie der Angreifer in das System gekommen ist. Diese Informationen können bei der Wiederherstellung der Daten und dem Schließen der Sicherheitslücke hilfreich sein.
description: The ability of many companies to work today is based on their IT systems. These can be shut down by a ransomware attack, leaving the company unable to work, and important data can be lost. For personnel and financial reasons, a cyberforensic investigation by a trained expert is often not feasible for small and medium-sized enterprises. In this work, the aim was to find out whether it is possible to secure and analyse a system affected by ransomware without the need for appropriate training or expensive analysis software. It is possible to carry out the analysis with the help of a guide developed as part of this work and the tool Autopsy - Digital Forensics, provided that good IT skills are available. The investigator is guided from the backup of the data to the evaluation of the traces and works out an answer to the question of which ransomware it was, when the attack took place and how the attacker got into the system. This information can be helpful in restoring the data and closing the security gap.
title: Steuerliche Gestaltungsmöglichkeiten von Immobilientransaktionen und deren Auswirkungen in Bezug auf Asset Deal und Share Deal
Creators: name: Fink, Julius Alexander
Year: 2022

description: In dieser Masterthese sollen steuerliche Gestaltungsmöglichkeiten von Immobilientransaktionen in Österreich behandelt werden. Welche steuerlichen Aspekte sind für Käufer und Verkäufer zu beachten, welche Gestaltungsmöglichkeiten gibt es? Gibt es allgemein gültige Regeln insbesondere bei Asset- und Share-Deal, die von Verkäufer und Käufer grundsätzlich befolgt werden können? Gibt es noch weitere wichtige Gegebenheiten, auf die die Vertragsparteien beim Kauf und Verkauf Rücksicht nehmen sollten? Was ist bei der Umsatzsteuer unbedingt zu beachten? Diese Entscheidungen, welche bereits beim Ankauf getroffen werden müssen, haben für den Käufer meist langwierige und weitreichende wirtschaftliche Auswirkungen. Eine anfangs falsch getätigte Entscheidung kann das Ergebnis zwischen wirtschaftlichem Erfolg und Misserfolg bedeuten. Für Investoren und Projektentwickler sind daher diese steuerlichen Gestaltungsmöglichkeiten von besonderem Interesse. Doch nicht nur Projektentwickler bzw. Unternehmer sind am Immobilienmarkt präsent, auch Private erwerben Immobilien. Es wird daher auch behandelt auf was beim Kauf und Verkauf von Privaten und Unternehmern geachtet werden muss. In dieser Masterthese werden daher unter anderem folgende Fragen abgehandelt: Welche Vorteile bringen Asset- oder Share-Deal, gibt es neben der Grunderwerbsteuer weitere Kriterien, die es zu beachten gibt? Welche steuerlichen Konsequenzen gibt es für Immobilieninvestoren beim Erwerb mittels Share-Deal? Sollte mit Umsatzsteuer verkauft werden, oder lohnt es sich Liegenschaften umsatzsteuerfrei zu erwerben? Wie verhält sich der Erwerb steuerlich, von beispielsweise Wohnungen, von privaten Investoren vom Unternehmer (Bauträger), welche steuerlichen Aspekte sind zu beachten?
Gapless Andreev bound states in the quantum spin Hall insulator HgTe
Creators: name: Bocquillon, Erwann
name: Deacon, Russell S.
name: Wiedenmann, Jonas
name: Leubner, Philipp
name: Klapwijk, Teun M.
name: Brüne, Christoph
name: Ishibashi, Koji
name: Buhmann, H.
name: Molenkamp, Laurens W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In recent years, Majorana physics has attracted considerable attention in both theoretical and experimental studies due to exotic new phenomena and its prospects for fault-tolerant topological quantum computation. To this end, one needs to engineer the interplay between superconductivity and electronic properties in a topological insulator, but experimental work remains scarce and ambiguous. Here we report experimental evidence for topological superconductivity induced in a HgTe quantum well, a two-dimensional topological insulator that exhibits the quantum spin Hall effect. The ac Josephson effect demonstrates that the supercurrent has a $4π$-periodicity with the superconducting phase difference as indicated by a doubling of the voltage step for multiple Shapiro steps. In addition, an anomalous SQUID-like response to a perpendicular magnetic field shows that this $4π$-periodic supercurrent originates from states located on the edges of the junction. Both features appear strongest when the sample is gated towards the quantum spin Hall regime, thus providing evidence for induced topological superconductivity in the quantum spin Hall edge states.
description: 16 pages, 5 figures (main text) + 11 pages, 4 figures (SI)
Leucopria cylindricornis Masner & Garcia 2002
Creators: name: Notton, David G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Leucopria
Leucopria cylindricornis

description: Leucopria cylindricornis Masner & García, 2002: 86, fig. 61.
Valid name
Leucopria cylindricornis Masner & García, 2002.
Summary of types
Paratype ♀.
description: Published as part of Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, pp. 1-123 in European Journal of Taxonomy 75 on page 83, DOI: 10.5852/ejt.2014.75, http://zenodo.org/record/3862773
Entanglement Conservation, ER=EPR, and a New Classical Area Theorem for Wormholes
Creators: name: Remmen, Grant N.
name: Bao, Ning
name: Pollack, Jason
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the question of entanglement conservation in the context of the ER=EPR correspondence equating quantum entanglement with wormholes. In quantum mechanics, the entanglement between a system and its complement is conserved under unitary operations that act independently on each; ER=EPR suggests that an analogous statement should hold for wormholes. We accordingly prove a new area theorem in general relativity: for a collection of dynamical wormholes and black holes in a spacetime satisfying the null curvature condition, the maximin area for a subset of the horizons (giving the largest area attained by the minimal cross section of the multi-wormhole throat separating the subset from its complement) is invariant under classical time evolution along the outermost apparent horizons. The evolution can be completely general, including horizon mergers and the addition of classical matter satisfying the null energy condition. This theorem is the gravitational dual of entanglement conservation and thus constitutes an explicit characterization of the ER=EPR duality in the classical limit.
description: 16 pages, 2 figures
Supplementary Material on “Unified torque scaling in counter-rotating suspension Taylor–Couette flow"
Creators: name: Alam, Meheboob
name: Ghosh, Manojit
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering
subject: Mechanics
subject: 91504 Fluidisation and Fluid Mechanics
subject: FOS: Other engineering and technologies

description: Torque measurements are reported for the Taylor–Couette flow of a neutrally buoyant non-colloidal suspension in the counter-rotation regime upto a particle volume fraction of ϕ =0.2. A unified scaling relation for the dimensionless torque (the pseudo-Nusselt number) of the form Nuω0=(α0+α1 Ta1*α2) Ta(0)kμr(ϕ)n is shown to hold over a range of Taylor number Tac1≤ Ta ≤ ~106 that covers primary, secondary and tertiary bifurcating states; here, Ta1*= Ta(ϕ)/Tac1(ϕ) is the reduced Taylor number, Tac1 is the critical Taylor number at primary bifurcation and μr(ϕ) = μ(ϕ)/μ(0) is the relative viscosity of the suspension. Possible effects of flow transitions and inhomogeneous distribution of particles on torque scaling are discussed.This article is part of the theme issue ‘Taylor–Couette and related flows on the centennial of Taylor’s seminal Philosophical Transactions paper (Part 1)’.
Group Testing with Side Information via Generalized Approximate Message Passing
Creators: name: Cao, Shu-Jie
name: Goenka, Ritesh
name: Wong, Chau-Wai
name: Rajwade, Ajit
name: Baron, Dror
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Group testing can help maintain a widespread testing program using fewer resources amid a pandemic. In a group testing setup, we are given n samples, one per individual. Each individual is either infected or uninfected. These samples are arranged into m < n pooled samples, where each pool is obtained by mixing a subset of the n individual samples. Infected individuals are then identified using a group testing algorithm. In this paper, we incorporate side information (SI) collected from contact tracing (CT) into nonadaptive/single-stage group testing algorithms. We generate different types of possible CT SI data by incorporating different possible characteristics of the spread of disease. These data are fed into a group testing framework based on generalized approximate message passing (GAMP). Numerical results show that our GAMP-based algorithms provide improved accuracy.
description: To appear in IEEE Trans. Signal Processing. arXiv admin note: substantial text overlap with arXiv:2106.02699, arXiv:2011.14186
The Gravitational Constant as a quantum mechanical expression
Creators: name: Roza, Engel
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A quantitatively verifiable expression for the Gravitational Constant is derived in terms of quantum mechanical quantities. This derivation appears to be possible by selecting a suitable physical process in which the transformation of the equation of motion into a quantum mechanical wave equation can be obtained by Einstein's geodesic approach. The selected process is the pi-meson, modeled as the one-body equivalent of a two-body quantum mechanical oscillator in which the vibrating mass is modeled as the result of the two energy fluxes from the quark and the antiquark. The quantum mechanical formula for the Gravitational Constant appears to show a quantitatively verifiable relationship with the Higgs boson as conceived in the Standard Model.
description: 17 pages
Supplementary Material on “Unified torque scaling in counter-rotating suspension Taylor–Couette flow"
Creators: name: Alam, Meheboob
name: Ghosh, Manojit
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering
subject: Mechanics
subject: 91504 Fluidisation and Fluid Mechanics
subject: FOS: Other engineering and technologies

description: Torque measurements are reported for the Taylor–Couette flow of a neutrally buoyant non-colloidal suspension in the counter-rotation regime upto a particle volume fraction of $\phi =0.2$. A unified scaling relation for the dimensionless torque (the pseudo-Nusselt number) of the form $\mbox {\rm Nu}_{\omega 0} = ( \alpha _0 + \alpha _1{\mbox {\rm Ta}_{1}^*}^{\alpha _2}) \mbox {\rm Ta}( 0) ^{k} {\mu _r( \phi ) }^{n}$ is shown to hold over a range of Taylor number $\mbox {\rm Ta}^{c1} \leq \mbox {\rm Ta}\leq ~10^6$ that covers primary, secondary and tertiary bifurcating states; here, $\mbox {\rm Ta}_1^*= \mbox {\rm Ta}( \phi ) /\mbox {\rm Ta}^{c1}( \phi ) $ is the reduced Taylor number, $\mbox {\rm Ta}^{c1}$ is the critical Taylor number at primary bifurcation and $\mu _r( \phi ) =\mu ( \phi ) /\mu ( 0) $ is the relative viscosity of the suspension. Possible effects of flow transitions and inhomogeneous distribution of particles on torque scaling are discussed.This article is part of the theme issue ‘Taylor–Couette and related flows on the centennial of Taylor’s seminal Philosophical Transactions paper (Part 1)’.
Whitepaper submitted to Snowmass21: Advanced accelerator linear collider demonstration facility at intermediate energy
Creators: name: Benedetti, C.
name: Bulanov, S. S.
name: Esarey, E.
name: Gonsalves, C. G. R. Geddes A. J.
name: Jacobs, P. M.
name: Knapen, S.
name: Nachman, B.
name: Nakamura, K.
name: Griso, S. Pagan
name: Schroeder, C. B.
name: Terzani, D.
name: van Tilborg, J.
name: Turner, M.
name: Yao, W. -M.
name: Bernstein, R.
name: Shiltsev, V.
name: Gessner, S. J.
name: Hogan, M. J.
name: Nelson, T.
name: Jing, C.
name: Low, I.
name: Lu, X.
name: Yoshida, R.
name: Lee, C.
name: Meade, P.
name: Vafaei-Najafabadi, N.
name: Muggli, P.
name: Musumeci, P.
name: Palmer, M.
name: Prebys, E.
name: Visinelli, L.
name: Aidala, C. A.
name: Thomas, A. G. R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: It is widely accepted that the next lepton collider beyond a Higgs factory would require center-of-mass energy of the order of up to 15 TeV. Since, given reasonable space and cost restrictions, conventional accelerator technology reaches its limits near this energy, high-gradient advanced acceleration concepts are attractive. Advanced and novel accelerators (ANAs) are leading candidates due to their ability to produce acceleration gradients on the order of 1--100~GV/m, leading to compact acceleration structures. Over the last 10-15 years significant progress has been achieved in accelerating electron beams by ANAs. For example, the demonstration of several-GeV electron beams from laser-powered capillary discharge waveguides, as well as the proof-of-principle coupling of two accelerating structures powered by different laser pulses, has increased interest in ANAs as a viable technology to be considered for a compact, TeV-class, lepton linear collider.
 However, intermediate facilities are required to test the technology and demonstrate key subsystems. A 20-100 GeV center-of-mass energy ANA-based lepton collider can be a possible candidate for an intermediate facility. Apart from being a test beam facility for accelerator and detector studies, this collider will provide opportunities to study muon and proton beam acceleration, investigate charged particle interactions with extreme electromagnetic fields (relevant for beam delivery system designs and to study the physics at the interaction point), as well as precision Quantum Chromodynamics and Beyond the Standard Model physics measurements. Possible applications of this collider include the studies of $γγ$ and $e$-ion collider designs.
description: contribution to Snowmass 2021
On the resurgent structure of quantum periods
Creators: name: Gu, Jie
name: Marino, Marcos
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Quantum periods appear in many contexts, from quantum mechanics to local mirror symmetry. They can be described in terms of topological string free energies and Wilson loops, in the so-called Nekrasov-Shatashvili limit. We consider the trans-series extension of the holomorphic anomaly equations satisfied by these quantities, and we obtain exact multi-instanton solutions for these trans-series. Building on this result, we propose a unified perspective on the resurgent structure of quantum periods. We show for example that the Delabaere-Pham formula, which was originally obtained in quantum mechanical examples, is a generic feature of quantum periods. We illustrate our general results with explicit calculations for the double-well in quantum mechanics, and for the quantum mirror curve of local $\mathbb{P}^2$.
description: 40 pages, 8 figures; typos corrected, refs added
How can rainbow gravity affect on gravitational force?
Creators: name: Sefiedgar, A. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: According to Verlinde's recent proposal, the gravity is originally an entropic force. In this work, we obtain the corrections to the entropy-area law of black holes within rainbow gravity. The corrected entropy-area law leads to the modifications of the number of bits $N$. Inspired by Verlinde's argument on the entropic force, and using the modified number of bits, we can investigate the effects of rainbow gravity on the modified Newtonian dynamics, Newton's law of gravitation, and Einstein's general relativity in entropic force approach.
Circular orbits and polarized images of charged particles orbiting Kerr black hole with a weak magnetic field
Creators: name: Lee, Tsai-Chen
name: Hu, Zezhou
name: Guo, Minyong
name: Chen, Bin
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we study circular motions of charged particles and their polarized images around the Kerr black hole immersed in a weak magnetic field. We pay special attention to the case that both the magnetic field and the charge-to-mass ratio are not big, thus the effective potential along the radial motion reduce to a cubic form approximately so that we can express the radius of the innermost stable circular orbit analytically in terms of the energy and angular momentum of charged particles. Moreover, we computed the polarized synchrotron radiations of these particles and obtained the polarized images semi-analytically for various spins, observational angles and prograde and retrograde orbits. In particular, We find that these parameters have significant impacts on the polarization rotation and the magnitude of the polarization flux.
description: 21 pages,5 figuers; major revision, published version matched
Shadow and stability of quantum-corrected black holes
Creators: name: Yang, Jinsong
name: Zhang, Cong
name: Ma, Yongge
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently the quantum Oppenheimer-Snyder gravitational collapse model has been proposed in loop quantum gravity, providing quantum-corrected Schwarzschild spacetimes as the exterior of the collapsing dust ball. In this paper, the quantum gravity effects on the black hole shadows in this model are studied, and the stability of the quantum-corrected black holes is also analyzed by calculating the quasinormal modes. It turns out that the quantum correction always shrinks the radius of shadows, and the quantum-corrected black holes are stable against the scalar and vector perturbations.
description: 15 pages, 9 figures
Chandra Observation of Abell 1142: A Cool-Core Cluster Lacking a Central Brightest Cluster Galaxy?
Creators: name: Su, Yuanyuan
name: Buote, David A.
name: Gastaldello, Fabio
name: van Weeren, Reinout
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Abell~1142 is a low-mass galaxy cluster at low redshift containing two comparable Brightest Cluster Galaxies (BCG) resembling a scaled-down version of the Coma Cluster. Our Chandra analysis reveals an X-ray emission peak, roughly 100 kpc away from either BCG, which we identify as the cluster center. The emission center manifests itself as a second beta-model surface brightness component distinct from that of the cluster on larger scales. The center is also substantially cooler and more metal rich than the surrounding intracluster medium (ICM), which makes Abell 1142 appear to be a cool core cluster. The redshift distribution of its member galaxies indicates that Abell 1142 may contain two subclusters with each containing one BCG. The BCGs are merging at a relative velocity of ~1200 km/s. This ongoing merger may have shock-heated the ICM from ~ 2 keV to above 3 keV, which would explain the anomalous L_X--T_X scaling relation for this system. This merger may have displaced the metal-enriched "cool core" of either of the subclusters from the BCG. The southern BCG consists of three individual galaxies residing within a radius of 5 kpc in projection. These galaxies should rapidly sink into the subcluster center due to the dynamical friction of a cuspy cold dark matter halo.
description: Accepted for publication in ApJ
Effect of ECAP and heat treatment on mechanical properties, stress relaxation behavior and corrosion resistance of a 321-type austenitic steel with increased delta-ferrite content
Creators: name: Chuvil'deev, V. N.
name: Nokhrin, A. V.
name: Kozlova, N. A.
name: Chegurov, M. K.
name: Kopylov, V. I.
name: Gryaznov, M. Yu.
name: Shotin, S. V.
name: Melekhin, N. V.
name: Likhnitskii, C. V.
name: Tabachkova, N. Yu.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hot rolled commercial metastable austenitic steel 0.8C-18Cr-10Ni-0.1Ti (Russian industrial name 08X18H10T, analog 321L) with strongly elongated thin delta-ferrite particles in its microstructure was the object of investigations. The lengths of these delta-particles were up to 500 mkm, the thickness was 10 mkm. The formation of the strain-induced martensite as well as the grinding of the austenite and of the delta-ferrite grains take place during ECAP. During the annealing of the UFG steel, the formation of the delta-phase particles takes place. These particles affect the grain boundary migration and the strength of the steel. However, a reduction of the Hall-Petch coefficient as compared to the coarse-grained (CG) steel due to the fragmentation of the delta-ferrite particles was observed. The samples of the UFG steel were found to have 2-3 times higher stress relaxation resistance as compared to the CG steel (a higher macroelasticity stress and a lower stress relaxation magnitude). The differences in the stress relaxation resistance of the UFG and CG steels were investigated. ECAP was shown to result in an increase in the corrosion rate and in an increased tendency to the intergranular corrosion (IGC). The reduction of the corrosion resistance of the UFG steel was found to originate from the increase in the fraction of the strain-induced martensite during ECAP.
description: 56 pages, 3 tables, 19 figures
title: Metaphysische Grenzerfahrungen im Post Cinema
Creators: name: Huber, Christoph
Year: 2022

description: Die vorliegende Masterarbeit setzt sich mit dem Stand der Kinos in einem modernen visuellen Zeitalter auseinander, indem es nicht mehr über dieselbe mediale Vorherrschaft verfügt, wie noch zu seinen Anfangszeiten – dem Post Cinema. Um das Post Cinema als solches erkenntlich zu machen, untersuche ich anhand der beiden 3D-Animationsfilme Alles steht Kopf und Soul die komplexe körperliche Verbindung, die zwischen Publikum und Filmbild unter optimalen Rezeptionsbedingungen entsteht. Den theoretischen Rahmen hierfür bildet die spinozistische/Bergson’sche Affektphilosophie von Giles Deleuze. Um mich dem Post Cinema anzunähern, wähle ich einen bewusst „sinnlichen“ Zugang. Ich zeige auf, wie das photographische Bild als ikonografischer Abgleich der Realität diente, um sich zu einem Medium der parallelen Wahrnehmung zu entwickeln, dass durch Bewegung seine eigene (filmische) Realität schafft. In der Filmrezeption entsteht eine Überlagerung der Realitäten, in der das affektive Potenzial des Bewegtbildes wirksam wird. Bewegungen und Geschwindigkeiten werden vom Publikum, basierend auf ihrem kinematografischen Vokabular, in Affekte und Intensitäten übersetzt. Dies geschieht für Deleuze unter anderem im Affektbild, das er als Teil des Bewegungsbildes sieht, doch es findet sich auch im Zeitbild als optisches oder akustisches Bild wieder. In diesen Momenten können bewegte Bilder ihr besonderes Potenzial erfüllen und eine kinematografische Sprache entwickeln, die dem Kino seine einzigartige Qualität verleiht. Diese Arbeit zeigt auf, wie sich diese kinematografische Sprache den Möglichkeiten und Bedingungen des visuellen Zeitalters anpasst, um die im Kino einzigartigen Affekte zu generieren. Sowohl in Alles steht Kopf wie auch in Soul ist ein erhöhter Fokus auf das Wesen der Bildoberfläche zu erkennen. Eine Oberfläche, die sich schnell als (körperliche) Grenze darlegt, um von den halb-durchlässigen Protagonist*innen der Filme durchdrungen zu werden. Diese Bewegung jenseits dieser für das Post Cinema bezeichnenden extra- und intradiegetischen metaphysischen Grenzen ist das, was die beiden Filme auch als Vertreter als postkinematografische Vertreter auszeichnet.
Algebraic (super-)integrability from commutants of subalgebras in universal enveloping algebras
Creators: name: Campoamor-Stursberg, Rutwig
name: Latini, Danilo
name: Marquette, Ian
name: Zhang, Yao-Zhong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Starting from a purely algebraic procedure based on the commutant of a subalgebra in the universal enveloping algebra of a given Lie algebra, the notion of algebraic Hamiltonians and the constants of the motion generating a polynomial symmetry algebra is proposed. The case of the special linear Lie algebra $\mathfrak{sl}(n)$ is discussed in detail, where an explicit basis for the commutant with respect to the Cartan subalgebra is obtained, and the order of the polynomial algebra is computed. It is further shown that, with an appropriate realization of $\mathfrak{sl}(n)$, this provides an explicit connection with the generic superintegrable model on the $(n-1)$-dimensional sphere $\mathbb{S}^{n-1}$ and the related Racah algebra $R(n)$. In particular, we show explicitly how the models on the $2$-sphere and $3$-sphere and the associated symmetry algebras can be obtained from the quadratic and cubic polynomial algebras generated by the commutants defined in the enveloping algebra of $\mathfrak{sl}(3)$ and $\mathfrak{sl}(4)$, respectively. The construction is performed in the classical (or Poisson-Lie) context, where the Berezin bracket replaces the commutator.
Human amnion epithelial cell therapy reduces hypertension-induced vascular stiffening and cognitive impairment
Creators: name: Dinh, Quynh Nhu
name: Lo, Cecilia
name: Zhang, David Wong
name: Tran, Vivian
name: Gibson-Hughes, Tayla
name: Sheriff, Ashleigh
name: Diep, Henry
name: Kim, Hyun Ah
name: Zhang, Shenpeng
name: Barreto-Arce, Liz J
name: Jelinic, Maria
name: Vinh, Antony
name: Arumugam, Thiruma
name: Chan, Siow Teng
name: Lim, Rebecca
name: Drummond, Grant
name: Sobey, Christopher
name: De Silva, Michael
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 3201
subject: Cardiovascular medicine and haematology

description: Vascular inflammation and fibrosis are hallmarks of hypertension and contribute to the development of cardiovascular disease and cognitive impairment. However, current anti-hypertensive drugs do not treat the underlying tissue damage, such as inflammation-associated fibrosis. Human amnion epithelial cells have several properties amenable for treating vascular pathology. This study tested the effect of amnion epithelial cells on vascular pathology and cognitive impairment during hypertension. Male C57Bl6 mice (8–12 weeks) were administered vehicle (saline; n = 58) or angiotensin II (0.7 mg/kg/d, n = 56) subcutaneously for 14 d. After surgery, a subset of mice were injected with 106 amnion epithelial cells intravenously. Angiotensin II infusion increased systolic blood pressure, aortic pulse wave velocity, accumulation of aortic leukocytes, and aortic mRNA expression of collagen subtypes compared to vehicle-infused mice (n = 9–11, P < 0.05). Administration of amnion epithelial cells attenuated these effects of angiotensin II (P < 0.05). Angiotensin II-induced cognitive impairment was prevented by amnion epithelial cell therapy (n = 7–9, P < 0.05). In the brain, amnion epithelial cells modulated some of the inflammatory genes that angiotensin II promoted differential expression of (n = 6, p-adjusted < 0.05). These findings suggest that amnion epithelial cells could be explored as a potential therapy to inhibit vascular pathology and cognitive impairment during hypertension.
Effective binding potential from Casimir interactions: the case of the Bose gas
Creators: name: Pruszczyk, Marcin
name: Jakubczyk, Paweł
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider the thermal Casimir effect in ideal Bose gases, where the dispersion relation involves both terms quadratic and quartic in momentum. We demonstrate that if macroscopic objects are immersed in such a fluid in spatial dimensionality $d\in\{3,7, 11, \dots\}$ and at the critical temperature $T_c$, the Casimir force acting between them is characterized by a sign which depends on the separation $D$ between the bodies and changes from attractive at large distances to repulsive at smaller separations. In consequence, an effective potential which binds the two objects at a finite separation arises. We demonstrate that for odd integer dimensionality $d\in \{3, 5, 7, \dots\}$, the Casimir energy is a polynomial of degree $(d-1)$ in $D^{-2}$. We point out a very special role of dimensionality $d=3$, where we derive a strikingly simple form of the Casimir energy as a function of $D$ at Bose-Einstein condensation. We discuss crossover between monotonous and oscillatory decay of the Casimir interaction above the condensation temperature.
A high-frequency mobility big-data reveals how COVID-19 spread across professions, locations and age groups
Creators: name: Zhao, Chen
name: Zhang, Jialu
name: Hou, Xiaoyue
name: Yeung, Chi Ho
name: Zeng, An
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: As infected and vaccinated population increases, some countries decided not to impose non-pharmaceutical intervention measures anymore and to coexist with COVID-19. However, we do not have a comprehensive understanding of its consequence , especially for China where most population has not been infected and most Omicron transmissions are silent. This paper serves as the first study to reveal the complete silent transmission dynamics of COVID-19 overlaying a big data of more than 0.7 million real individual mobility tracks without any intervention measures throughout a week in a Chinese city, with an extent of completeness and realism not attained in existing studies. Together with the empirically inferred transmission rate of COVID-19, we find surprisingly that with only 70 citizens to be infected initially, 0.33 million becomes infected silently at last. We also reveal a characteristic daily periodic pattern of the transmission dynamics, with peaks in mornings and afternoons. In addition, retailing, catering and hotel staff are more likely to get infected than other professions. Unlike all other age groups and professions, elderly and retirees are more likely to get infected at home than outside home.
description: 39 pages, 5+9 figures
title: "Kanin an Affi" - Briefe von Dr. Käte Laserstein (1900-1965) an ihre Schwester Lotte Laserstein
Creators: name: Braun, Felicitas
Year: 2022

description: Ich bespreche die von mir recherchierte Quellenlage und ihre Inhalte zu Dr. Käte Laserstein (1900-1965), Schwester der zwei Jahre älteren Malerin Lotte Laserstein. Meine Frage ist, wie sich ihr Leben anhand der etwa 250 Briefe an ihre Schwester, die im Künstler*innenarchiv der Berlinischen Galerie archiviert sind, abbildet. Dr. Käte Laserstein, studierte Germanistin, wurde 1932 Lehrerin. Während Lotte Laserstein 1937 nach Schweden emigrieren kann, bleibt sie in Berlin und überlebt die Verfolgung durch das NS-Regime, indem sie sich von Juli 1942 bis zum Kriegsende 1945 mit zwei weiteren Frauen versteckt halten kann, während ihre Mutter 1942 verhaftet wird und laut Totenschein 1943 im KZ Ravensbrück stirbt. Meine Arbeit zeichnet die Versuche von Dr. Käte Lasersteins Ausreise und ihr Leben im Versteck nach, sowie ihr Leben nach dem Überleben. 1946 wanderte sie nach Schweden zu ihrer Schwester aus, sie kehrte aber acht Jahre später nach Berlin zurück und arbeitete bis zu ihrem Tod 1965 wieder als Lehrerin. Fragen meiner Arbeit sind Möglichkeiten und Grenzen von Käte Lasersteins Bildungsgeschichte, die Auswirkungen der unterschiedlichen Eigen- und Fremdzuschreibungen in den verschiedenen politischen Systemen sowie die Überlebensstrategien der drei Frauen als Solidargemeinschaft während der Verfolgung als Jüdinnen im Nationalsozialismus.
Structural aging of human neurons is the opposite of the changes in schizophrenia
Creators: name: Mizutani, Ryuta
name: Saiga, Rino
name: Yamamoto, Yoshiro
name: Uesugi, Masayuki
name: Takeuchi, Akihisa
name: Uesugi, Kentaro
name: Terada, Yasuko
name: Suzuki, Yoshio
name: De Andrade, Vincent
name: De Carlo, Francesco
name: Takekoshi, Susumu
name: Inomoto, Chie
name: Nakamura, Naoya
name: Torii, Youta
name: Kushima, Itaru
name: Iritani, Shuji
name: Ozaki, Norio
name: Oshima, Kenichi
name: Itokawa, Masanari
name: Arai, Makoto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Human mentality develops with age and is altered in psychiatric disorders, though their underlying mechanism is unknown. In this study, we analyzed nanometer-scale three-dimensional structures of brain tissues of the anterior cingulate cortex from eight schizophrenia and eight control cases. The distribution profiles of neurite curvature of the control cases showed a trend depending on their age, resulting in an age-correlated decrease in the standard deviation of neurite curvature (Pearson's r = -0.80, p = 0.018). In contrast to the control cases, the schizophrenia cases deviate upward from this correlation, exhibiting a 60% higher neurite curvature compared with the controls (p = 7.8 x 10^(-4)). The neurite curvature also showed a correlation with a hallucination score (Pearson's r = 0.80, p = 1.8 x 10^(-4)), indicating that neurite structure is relevant to brain function. We suggest that neurite curvature plays a pivotal role in brain aging and can be used as a hallmark to exploit a novel treatment of schizophrenia. This nano-CT paper is the result of our decade-long analysis and is unprecedented in terms of number of cases.
description: 24 pages, 5 figures. arXiv admin note: text overlap with arXiv:2007.00212
Faddeev-Jackiw Quantization of Non-Autonomous Singular Systems
Creators: name: Belhadi, Zahir
name: Bérard, Alain
name: Mohrbach, Hervé
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend the quantization à la Faddeev-Jackiw for non-autonomous singular systems. This leads to a generalization of the Schrödinger equation for those systems. The method is exemplified by the quantization of the damped harmonic oscillator and the relativistic particle in an external electromagnetic field.
Accounting for Temporal Variability in Functional Magnetic Resonance Imaging Improves Prediction of Intelligence
Creators: name: Li, Yang
name: Ma, Xin
name: Sunderraman, Raj
name: Ji, Shihao
name: Kundu, Suprateek
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: Computation (stat.CO)
subject: Methodology (stat.ME)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Neuroimaging-based prediction methods for intelligence and cognitive abilities have seen a rapid development in literature. Among different neuroimaging modalities, prediction based on functional connectivity (FC) has shown great promise. Most literature has focused on prediction using static FC, but there are limited investigations on the merits of such analysis compared to prediction based on dynamic FC or region level functional magnetic resonance imaging (fMRI) times series that encode temporal variability. To account for the temporal dynamics in fMRI data, we propose a deep neural network involving bi-directional long short-term memory (bi-LSTM) approach that also incorporates feature selection mechanism. The proposed pipeline is implemented via an efficient GPU computation framework and applied to predict intelligence scores based on region level fMRI time series as well as dynamic FC. We compare the prediction performance for different intelligence measures based on static FC, dynamic FC, and region level time series acquired from the Adolescent Brain Cognitive Development (ABCD) study involving close to 7000 individuals. Our detailed analysis illustrates that static FC consistently has inferior prediction performance compared to region level time series or dynamic FC for unimodal rest and task fMRI experiments, and in almost all cases using a combination of task and rest features. In addition, the proposed bi-LSTM pipeline based on region level time series identifies several shared and differential important brain regions across task and rest fMRI experiments that drive intelligence prediction. A test-retest analysis of the selected features shows strong reliability across cross-validation folds. Given the large sample size from ABCD study, our results provide strong evidence that superior prediction of intelligence can be achieved by accounting for temporal variations in fMRI.
State Estimation in Electric Power Systems Using Belief Propagation: An Extended DC Model
Creators: name: Cosovic, Mirsad
name: Vukobratovic, Dejan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, we model an extended DC state estimation (SE) in an electric power system as a factor graph (FG) and solve it using belief propagation (BP) algorithm. The DC model comprises bus voltage angles as state variables, while the extended DC model includes bus voltage angles and bus voltage magnitudes as state variables. By applying BP to solve the SE problem in the extended DC model, we obtain a Gaussian BP scenario for which we derive closed-form expressions for BP messages exchanged along the FG. The performance of the BP algorithm is demonstrated for the IEEE 14 bus test case. Finally, the application of BP algorithm on the extended DC scenario provides significant insights into a fundamental structure of BP equations in more complex models such as the AC model - the topic we will investigate in our follow up work. As a side-goal of this paper, we aim at thorough and detailed presentation on applying BP on the SE problem in order to make the powerful BP algorithm more accessible and applicable within the power-engineering community.
description: 5 pages; 5 figures; to appear in the IEEE International workshop on Signal Processing advances in Wireless Communications (SPAWC 2016)
Slow light based optical frequency shifter
Creators: name: Li, Qian
name: Bao, Yupan
name: Thuresson, Axel
name: Nilsson, Adam N.
name: Rippe, Lars
name: Kröll, Stefan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate experimentally and theoretically a controllable way of shifting the frequency of an optical pulse by using a combination of spectral hole burning, slow light effect, and linear Stark effect in a rare-earth-ion doped crystal. We claim that the solid angle of acceptance of a frequency shift structure can be close to $2π$, which means that the frequency shifter could work not only for optical pulses propagating in a specific spatial mode but also for randomly scattered light. As the frequency shift is controlled solely by an external electric field, it works also for weak coherent light fields, and can e.g. be used as a frequency shifter for quantum memory devices in quantum communication.
Non-dipolar gauge links for transverse-momentum-dependent pion wave functions
Creators: name: Wang, Yu-Ming
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss the factorization-compatible definitions of transverse-momentum-dependent (TMD) pion wave functions which are fundamental theory inputs entering QCD factorization formulae for many hard exclusive processes. I will first demonstrate that the soft subtraction factor introduced to remove both rapidity and pinch singularities can be greatly reduced by making the maximal use of the freedom to construct the Wilson-line paths when defining the TMD wave functions. I will then turn to show that the newly proposed TMD definition with non-dipolar Wilson lines is equivalent to the one with dipolar gauge links and with a complicated soft function, to all orders of the perturbative expansion in the strong coupling, as far as the infrared behavior is concerned.
description: 7 pages, 3 figures
A $L_μ- L_τ$ theory of Higgs flavor violation and $(g-2)_μ$
Creators: name: Altmannshofer, Wolfgang
name: Carena, Marcela
name: Crivellin, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Several experiments reported hints for the violation of lepton flavor or lepton flavor universality in processes involving muons. Most prominently, there is the hint for a non-zero rate of the flavor violating Higgs decay $h \to τμ$ at the LHC, as well as the hint for lepton flavor universality violation in rare $B$ meson decays at LHCb. In addition, also the long standing discrepancy in the anomalous magnetic moment of the muon motivates new physics connected to muons. A symmetry which violates lepton flavor universality, is $L_μ-L_τ$: the difference of muon-number and tau-number. We show that adding vector-like fermions to a $L_μ-L_τ$ theory generates naturally an effect in the anomalous magnetic moment of the muon and $h\toτμ$, while effects in other $τ\to μ$ transitions are systematically suppressed by symmetry arguments. We find that if $L_μ-L_τ$ is gauged it is possible to also accommodate the discrepant $b\to sμμ$ data while predicting a $τ\to3μ$ and a modified $h\toμμ$ rate within reach of upcoming experiments.
description: 6 pages, 2 figures
Entanglement in Algebraic Quantum Mechanics: Majorana fermion systems
Creators: name: Benatti, F.
name: Floreanini, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Many-body entanglement is studied within the algebraic approach to quantum physics in systems made of Majorana fermions. In this framework, the notion of separability stems from partitions of the algebra of observables and properties of the associated correlation functions, rather than on particle tensor products. This allows obtaining a complete characterization of non-separable Majorana fermion states. These results may find direct applications in quantum metrology: using Majorana systems, sub-shot noise accuracy in parameter estimations can be achieved without preliminary, resource consuming, state entanglement operations.
description: 44 pages, LaTex