cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Critical points of the cosmic velocity field and the uncertainties in the value of the Hubble constant
Creators: name: Liu, Hao
name: Mohayaee, Roya
name: Naselsky, Pavel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The existence of critical points for the peculiar velocity field is a natural feature of the correlated vector field. These points appear at the junctions of velocity domains with different orientations of their averaged velocity vectors. Since peculiar velocities are the important cause of the scatter in the Hubble expansion rate, we propose that a more precise determination of the Hubble constant can be made by restricting analysis to a subsample of observational data containing only the zones around the critical points of the peculiar velocity field, associated with voids and saddle points. On large-scales the critical points, where the first derivative of the gravitational potential vanishes, can easily be identified using the density field and classified by the behavior of the Hessian of the gravitational potential. We use high-resolution N-body simulations to show that these regions are stable in time and hence are excellent tracers of the initial conditions. Furthermore, we show that the variance of the Hubble flow can be substantially minimized by restricting observations to the subsample of such regions of vanishing velocity instead of aiming at increasing the statistics by averaging indiscriminately using the full data sets, as is the common approach.
description: 17 pages, 6 figures and 2 tables, minor modifications after receiving several useful comments
title: Hätten Sie es gewusst? – Tinea capitis et corporis – zwei Erreger – ein klinisches Bild
Creators: name: Koop, Sabrina
name: Lode, Holger
name: Lutze, Stine
name: Daeschlein, Georg
name: Bruns, Roswitha
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Die Tinea capitis tritt vorwiegend im Kindesalter auf und wird durch antro- wie auch zoophile Dermatophyten verursacht. M. canis, der primär Katzen befällt, stellt hierbei als hochkontagiöser Erreger in Mitteleuropa die häufigste Ursache dar. Kasuistiken: Fall[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 24. Jahrestagung der Deutschen Gesellschaft für Pädiatrische Infektiologie (DGPI)
Dispersive CFT Sum Rules
Creators: name: Caron-Huot, Simon
name: Mazac, Dalimil
name: Rastelli, Leonardo
name: Simmons-Duffin, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a unified treatment of dispersive sum rules for four-point correlators in conformal field theory. We call a sum rule dispersive if it has double zeros at all double-twist operators above a fixed twist gap. Dispersive sum rules have their conceptual origin in Lorentzian kinematics and absorptive physics (the notion of double discontinuity). They have been discussed using three seemingly different methods: analytic functionals dual to double-twist operators, dispersion relations in position space, and dispersion relations in Mellin space. We show that these three approaches can be mapped into one another and lead to completely equivalent sum rules. A central idea of our discussion is a fully nonperturbative expansion of the correlator as a sum over Polyakov-Regge blocks. Unlike the usual OPE sum, the Polyakov-Regge expansion utilizes the data of two separate channels, while having (term by term) good Regge behavior in the third channel. We construct sum rules which are non-negative above the double-twist gap; they have the physical interpretation of a subtracted version of superconvergence sum rules. We expect dispersive sum rules to be a very useful tool to study expansions around mean-field theory, and to constrain the low-energy description of holographic CFTs with a large gap. We give examples of the first kind of applications, notably, we exhibit a candidate extremal functional for the spin-two gap problem.
description: 87 pages + appendices, 16 figures; v2: references added; v3: published version, clarifications added
Regulation of viral protein nuclear trafficking
Creators: name: Fulcher., Alex J.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: Weder Ost noch West – Zentral!(Europa!). Freiwillige Feuerwehren als nachhaltiges Muster der lokalen Selbstregierung
Creators: name: Kladnik, Ana
name: Lindenberger, Thomas
name: Stránský, Mojmír
name: Unger, Steffi
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2019

description: Die öffentliche Wahrnehmung der Transformationen in den postsozialistischen Ländern ist in zweierlei Hinsicht unterbelichtet: Sie ist räumlich begrenzt, indem sie den Fokus auf jeweils national begrenzte Fälle im ehemaligen Ostblock richtet. Sie ist zeitlich begrenzt, indem sie den Fokus auf die Jahre des raschen Systemumbaus richtet und allenfalls die Jahre unmittelbar davor einbezieht. Transformationen ganzer Gesellschaften, so wollen wir an einer alltagsrelevanten Institution zeigen, greifen aber auch auf Ressourcen zurück, die viel weiter in die Vergangenheit zurückreichen und gerade im zentraleuropäischen Raum schon immer einen zugleich nationalen und transnationalen Charakter hatten. Die Rede ist von der Freiwilligen Feuerwehr als einem seit Mitte des 19. Jahrhunderts in allen Ländern des Deutschen Reichs wie auch der Österreichisch-Habsburgischen Monarchie verbreiteten Muster der lokalen Selbstregierung (self governance). Unsere Beispiele kommen aus Sachsen, den tschechischen Ländern und Slowenien – sie könnten aber auch aus Mecklenburg-Vorpommern, Galizien, der Slowakei oder der Vojvodina stammen. Gemeinsam ist ihnen die erstaunliche institutionelle Kontinuität der Organisation eines freiwilligen Dienstes für die lokale Gemeinschaft über die dramatischen Systemwechsel des 20. Jahrhunderts hinweg. Dabei existieren Freiwillige Feuerwehren immer lokal als Personenvereine mit aktiven (das heißt für die Brandbekämpfung einsatzbereiten) und fördernden Mitglieder*innen, die sich überlokal zu regionalen und nationalen Verbänden zusammenschließen, die wiederum untereinander rege den internationalen Austausch pflegen.
NNLO QCD corrections to leptonic observables in top-quark pair production and decay
Creators: name: Czakon, Michal
name: Mitov, Alexander
name: Poncelet, Rene
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate a comprehensive set of spin correlations and differential distributions in top-quark pair production and decay to dilepton final states. This is the first time such a complete study is performed at next-to-next-to leading order in QCD. Both inclusive and fiducial distributions are presented and analyzed. Good agreement between NNLO QCD predictions and data is found. We demonstrate that it is possible to perform high-precision comparisons of fixed-order calculations with fiducial-level data. Subtleties of the top quark definition are raised and clarified. Some of those are found to have a very significant impact on top-quark pair production at absolute threshold.
description: 49 pages, 94 figures, published version, minor changes in the figures and text
$γ$-soft $^{146}$Ba and the role of non-axial shapes at N ~ 90
Creators: name: Mitchell, A. J.
name: Lister, C. J.
name: McCutchan, E. A.
name: Albers, M.
name: Ayangeakaa, A. D.
name: Bertone, P. F.
name: Carpenter, M. P.
name: Chiara, C. J.
name: Chowdhury, P.
name: Clark, J. A.
name: Copp, P.
name: David, H. M.
name: Deo, A. Y.
name: DiGiovine, B.
name: D'Olympia, N.
name: Dungan, R.
name: Harding, R. D.
name: Harker, J.
name: Hota, S. S.
name: Janssens, R. V. F.
name: Kondev, F. G.
name: Liu, S. H.
name: Ramayya, A. V.
name: Rissanen, J.
name: Savard, G.
name: Seweryniak, D.
name: Shearman, R.
name: Sonzogni, A. A.
name: Tabor, S. L.
name: Walters, W. B.
name: Wang, E.
name: Zhu, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Low-spin states in the neutron-rich, N = 90 nuclide $^{146}$Ba were populated following $β$-decay of $^{146}$Cs, with the goal of clarifying the development of deformation in Ba isotopes through delineation of their non-yrast structures. Fission fragments of $^{146}$Cs were extracted from a 1.7-Ci $^{252}$Cf source and mass-selected using the CARIBU facility. Low-energy ions were deposited at the center of a box of thin $β$ detectors, surrounded by a high-efficiency HPGe array. The new $^{146}$Ba decay scheme now contains 31 excited levels extending up to ~2.5 MeV excitation energy, double what was previously known. These data are compared to predictions from the Interacting Boson Approximation (IBA) model. It appears that the abrupt shape change found at N = 90 in Sm and Gd is much more gradual in Ba and Ce, due to an enhanced role of the $γ$ degree of freedom.
description: 10 pages, 8 figures, accepted to Physical Review C
Possible Generation Mechanism for Compressional Alfvénic Spikes as Observed by Parker Solar Probe
Creators: name: He, Jiansen
name: Zhu, Xingyu
name: Yang, Liping
name: Hou, Chuanpeng
name: Duan, Die
name: Zhang, Lei
name: Wang, Ying
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The solar wind is found by Parker Solar Probe (PSP) to be abundant with Alfvénic velocity spikes and magnetic field kinks. Temperature enhancement is another remarkable feature associated with the Alfvénic spikes. How the prototype of these coincident phenomena is generated intermittently in the source region becomes a hot topic of wide concerns. Here we propose a new model introducing guide-field discontinuity into the interchange magnetic reconnection between open funnels and closed loops with different magnetic helicities. The modified interchange reconnection model not only can accelerate jet flows from the newly opening closed loop but also excite and launch Alfvénic wave pulses along the newly-reconnected and post-reconnected open flux tubes. We find that the modeling results can reproduce the following observational features: (1) Alfvén disturbance is pulsive in time and asymmetric in space; (2) Alfvénic pulse is compressible with temperature enhancement and density variation inside the pulse. We point out that three physical processes co-happening with Alfvén wave propagation can be responsible for the temperature enhancement: (a) convection of heated jet flow plasmas (decrease in density), (b) propagation of compressed slow-mode waves (increase in density), and (c) conduction of heat flux (weak change in density). We also suggest that the radial nonlinear evolution of the Alfvénic pulses should be taken into account to explain the formation of magnetic switchback geometry.
On the Capacity of Diffusion-Based Molecular Timing Channels
Creators: name: Farsad, Nariman
name: Murin, Yonathan
name: Eckford, Andrew
name: Goldsmith, Andrea
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: This work introduces capacity limits for molecular timing (MT) channels, where information is modulated on the release timing of small information particles, and decoded from the time of arrival at the receiver. It is shown that the random time of arrival can be represented as an additive noise channel, and for the diffusion-based MT (DBMT) channel, this noise is distributed according to the Lévy distribution. Lower and upper bounds on the capacity of the DBMT channel are derived for the case where the delay associated with the propagation of information particles in the channel is finite. These bounds are also shown to be tight.
description: Accepted at IEEE International Symposium on Information Theory (ISIT) 2016
Design and characterization of a Zeeman Slower
Creators: name: Guevara-Bertsch, Milena
name: Salfenmoser, Lena
name: Chavarría-Sibaja, Andrés
name: Avendaño, Esteban
name: Herrera-Sancho, Óscar Andrey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on an investigation of a method that applies simultaneously two different mathematical models in order to optimize the design of a Zeeman Slower towards the implementation of ultra cold atoms in solid state physics. We introduce the implementation of a finite element simulation that allows us to predict with great accuracy the magnetic field intensity profile generated by the proposed design. Through the prediction of the behavior of the Zeeman Slower a greater control is acquired, which allows the optimization of the different experimental variables. We applied the method in the design of a multilayer solenoidal "Spin-Flip" Zeeman Slower for strontium atoms. The magnetic intensity profile generated by the Zeeman Slower is in agreement with the magnetic field strength profile necessary for the atom cooling and tends to zero in both end sides. The latter terms are essential in order to optimize the amount of trapped and cooled atoms.
description: 12 pages, 5 figures, in Spanish
Entanglement entropy in cubic gravitational theories
Creators: name: Cáceres, Elena
name: Vásquez, Rodrigo Castillo
name: López, Alejandro Vilar
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the holographic entanglement entropy functional for a generic gravitational theory whose action contains terms up to cubic order in the Riemann tensor, and in any dimension. This is the simplest case for which the so-called splitting problem manifests itself, and we explicitly show that the two common splittings present in the literature - minimal and non-minimal - produce different functionals. We apply our results to the particular examples of a boundary disk and a boundary strip in a state dual to 4-dimensional Poincaré AdS in Einsteinian Cubic Gravity, obtaining the bulk entanglement surface for both functionals and finding that causal wedge inclusion is respected for both splittings and a wide range of values of the cubic coupling.
description: 18 pages, 6 figures and 4 appendices; v3: major revision, including new content (subsection 4.2 and appendix B) and correction of some errors
A generalized voter model with time-decaying memory on a multilayer network
Creators: name: Zhong, Li-Xin
name: Xu, Wen-Juan
name: Chen, Rong-Da
name: Zhong, Chen-Yang
name: Qiu, Tian
name: Shi, Yong-Dong
name: Wang, Li-Liang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: By incorporating a multilayer network and time-decaying memory into the original voter model, the coupled effects of spatial and temporal cumulation of peer pressure on consensus are investigated. Heterogeneity in peer pressure and time-decaying mechanism are both found to be detrimental to consensus. The transition points, below which a consensus can always be reached and above which two opposed opinions are more likely to coexist, are found. A mean-field analysis indicates that the phase transitions in the present model are governed by the cumulative influence of peer pressure and the updating threshold. A functional relation between the consensus threshold and the decaying rate of the influence of peer pressure is found. As to the time to reach a consensus, it is governed by the coupling of the memory length and the decaying rate. An intermediate decaying rate may lead to much lower time to reach a consensus.
Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis: cosmic strings
Creators: name: Samanta, Rome
name: Datta, Satyabrata
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In seesaw mechanism, if right handed (RH) neutrino masses are generated dynamically by a gauged $U(1)$ symmetry breaking, a stochastic gravitational wave background (SGWB) sourced by a cosmic string network could be a potential probe of leptogenesis. We show that the leptogenesis mechanism that facilitates the dominant production of lepton asymmetry via the quantum effects of right-handed neutrinos in gravitational background, can be probed by GW detectors as well as next-generation neutrinoless double beta decay ($0νββ$) experiments in a complementary way. We infer that for a successful leptogenesis, an exclusion limit on $f-Ω_{\rm GW}h^2$ plane would correspond to an exclusion on the $|m_{ββ}|-m_1$ plane as well. We consider a normal light neutrino mass ordering and discuss how recent NANOGrav pulsar timing data (if interpreted as GW signal) e.g., at 95$\%$ CL, would correlate with the potential discovery or null signal in $0νββ$ decay experiments.
description: 16 pages, 4 figures, discussion on flavour couplings added. Explanation on the trace anomaly added. matches with the JHEP version
title: Quantitative Erforschung der ostdeutschen Transformationsgeschichte
Creators: name: Banditt, Christopher
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2019

description: Im Bereich der Transformationsforschung wird bisweilen den Geschichtswissenschaften noch keine eigenständige Rolle zugedacht. So werden etwa in der Einleitung eines Handbuchs zur Transformationsforschung zwar „welthistorische“ Beispiele von gesellschaftlichen und politischen Transformationen zur, wie es heißt, „Horizonterweiterung“ dargestellt. Allerdings wird die Historiografie dort nicht zu dem breiten, von Politik- sowie Kultur- über Rechts- bis hin zu Sozial- und Wirtschaftswissenschaften reichenden Feld der mit Transformationsforschung befassten Disziplinen gezählt. Und gerade die quantifizierende Darstellung von gesellschaftlichem Wandel, also dessen eher zahlenmäßige und datenbasierte Beschreibung, wird immer noch vornehmlich als Domäne der Sozial- und Wirtschaftswissenschaften betrachtet.
Quantum Dynamics in Noisy Backgrounds: from sampling to dissipation and fluctuations
Creators: name: Oliveira, O.
name: de Paula, W.
name: Frederico, T.
name: Hussein, M. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the dynamics of a quantum system coupled linearly to Gaussian white noise using functional methods. By performing the integration over the noisy field in the evolution operator, we get an equivalent non-Hermitian Hamiltonian, which evolves the quantum state with a dissipative dynamics. We also show that if the integration over the noisy field is done for the time evolution of the density matrix, a gain contribution from the fluctuations, can be accessed in addition to the loss one from the non-hermitian Hamiltonian dynamics. We illustrate our study by computing analytically the effective non-Hermitian Hamiltonian, which we found to be the complex frequency harmonic oscillator, with a known evolution operator. It leads to space and time localisation, a common feature of noisy quantum systems in general applications.
Towards a non-uniform epistemology of modality
Creators: name: Baron, Moritz Viktor Jakob
Publisher: name: The University of St Andrews
Year: 2022
Subjects: subject: Epistemology
subject: Modality
subject: Epistemology of modality
subject: BD218.5B2
subject: Modality (Theory of knowledge)
subject: Knowledge, Theory of

description: While most theories of a modal epistemology implicitly assume, or sometimes explicitly state, a uniform picture of the epistemology of modality, in this thesis I challenge this basic assumption. I argue that there is not one single epistemology of modality for all ‘domains of discourse’. That is, there is no one single way of coming to know modal propositions with such different content as those of mathematics, logic, physics, or the empirical world. I am not attempting to show that all epistemologies of modality should be non-uniform, but instead I am arguing that three influential modal epistemologies each fail to paint a uniform picture of our epistemic access of the modal realm on their own, but taken together form a coherent non-uniform epistemology of modality. The counterfactual theory fails to provide an adequate answer to how we attain modal knowledge of necessary mathematical and empirical propositions. These necessary truths, I argue, do not possess the relevant independence from each other to be analysable in terms of counterfactuals. I argue that Williamson is forced to accept a non-uniform epistemology of modality as a result with respect to our knowledge of constitutive truths. Next, I outline Vetter’s possibility-based epistemology of modality and pose three challenges: the access problem, the problem of scope and the generalization problem. The resulting picture is a firmly non-uniform epistemology of modality on at least the level of an epistemology of circumstantial modality and, similar to the counterfactual-based account, the level of essential truths. In the last chapter of this thesis, I discuss Bob Hale’s essentialist modal epistemology. I take on board the essentialist epistemology of necessity, and focus instead on knowledge of possibility on this account. I argue that, on its own, it fails to paint a psychologically plausible picture of how we come to know obvious modal possibility knowledge but instead may plausibly be complemented by other epistemologies of modality.
title: Инновационные технологии получения растительных аналогов молока
Creators: name: Серазетдинова, Юлия
name: Дышлюк, Любовь
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: В связи с увеличением числа пищевых аллергий, случаев частичной или полной непереносимости лактозы и других заболеваний растет популярность растительных аналогов молока. Производство данного вида продукта является более экологичным, по сравнению с производством продуктов животного происхождения. Однако наиболее экологичной технологии производства можно достичь, используя инновационные методы переработки. Целью данной работы является краткий обзор инновационных методов переработки растительного сырья. Рассмотрены такие методы как ультразвуковая и ферментативная экстракция, стерилизация СВЧ, ферментация.
Listeners’ Canon in Western Music: The Secret of Conservatism of Public Taste and its Ramifications for the Music Industry
Creators: name: Nikolsky, Aleksey
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 360102
subject: Art history
classificationCode: 360302
subject: Music composition and improvisation
classificationCode: 360304
subject: Music performance
classificationCode: 360303
subject: Music education
classificationCode: 360306
subject: Musicology and ethnomusicology
classificationCode: 360399
subject: Music not elsewhere classified

description: In exploring the phenomenon of canonization of composers and their works by the general public as fixed through the interaction of the professional criticism, music education, journalism and later, the record industry and radio broadcasting stations within the Western cultural establishment, I demonstrate the futility of attempts to whether to revise the existing canons or to introduce new ones. I show that no matter how hard the artistic and educational institutions try to push their agenda, the public continues to dearly hold onto its old time favorites. The roots of this problem are examined in light of the cultural mismanagement of music by the record industry and the cultural and educational institutions. Its ramifications are discussed in relation to, both, classical and popular music.
Gravitational Wave Signatures from Domain Wall and Strong First-Order Phase Transitions in a Two Complex Scalar extension of the Standard Model
Creators: name: Paul, Avik
name: Mukhopadhyay, Upala
name: Majumdar, Debasish
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a simple extension of Standard Model by adding two complex singlet scalars with a $\rm{U}\left(1\right)$ symmetry. A discrete $\mathcal{Z}_2 \times \mathcal{Z}^{\prime}_2$ symmetry is imposed in the model and the added scalars acquire a non zero vacuum expectation value (VEV) when the imposed symmetry is broken spontaneously. The real (CP even) parts of the complex scalars mix with the SM Higgs and give three physical mass eigenstates. One of these physical mass eigenstates is attributed to the SM like Higgs boson with mass 125.09 GeV. In the present scenario, domain walls are formed in the early Universe due to the breaking of discrete $\mathcal{Z}_2 \times \mathcal{Z}^{\prime}_2$ symmetry. In order to ensure the unstability of the domain wall this discrete symmetry is also explicitly broken by adding a bias potential to the Lagrangian. The unstable annihilating domain walls produce a significant amount of gravitational waves (GWs). In addition, we also explore the possibility of the production of GW emission from the strong first-order phase transition. We calculate the intensities and frequencies of each of such gravitational waves originating from two different phenomena of the early Universe namely annihilating domain walls and strong first-order phase transition. Finally, we investigate the observational signatures from these GWs at the future GW detectors such as ALIA, BBO, DECIGO, LISA, TianQin, Taiji, aLIGO, aLIGO+ and pulsar timing arrays such as SKA, IPTA, EPTA, PPTA, NANOGrav11 and NANOGrav12.5.
description: 30 pages, 3 figures and 5 tables
The role of gastric microvasculature in gastric injury and protection
Creators: name: Frydman., Gary Mark
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Leading Nonlinear Tidal Effects and Scattering Amplitudes
Creators: name: Bern, Zvi
name: Parra-Martinez, Julio
name: Roiban, Radu
name: Sawyer, Eric
name: Shen, Chia-Hsien
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the two-body Hamiltonian and associated eikonal phase, to leading post-Minkowskian order, for infinitely many tidal deformations described by operators with arbitrary powers of the curvature tensor. Scattering amplitudes in momentum and position space provide systematic complementary approaches. For the tidal operators quadratic in curvature, which describe the linear response to an external gravitational field, we work out the leading post-Minkowskian contributions using a basis of operators with arbitrary numbers of derivatives which are in one-to-one correspondence with the worldline multipole operators. Explicit examples are used to show that the same techniques apply to both bodies interacting tidally with a spinning particle, for which we find the leading contributions from quadratic in curvature tidal operators with an arbitrary number of derivatives, and to effective field theory extensions of general relativity. We also note that the leading post-Minkowskian order contributions from higher-dimension operators manifest double-copy relations. Finally, we comment on the structure of higher-order corrections.
description: 45 pages, 7 figures
The Soft, Fluctuating UVB at $z\sim6$ as Traced by C IV, SiIV, and CII
Creators: name: Finlator, K.
name: Oppenheimer, B. D.
name: Davé, R.
name: Zackrisson, E.
name: Thompson, R.
name: Huang, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The sources that drove cosmological reionization left clues regarding their identity in the slope and inhomogeneity of the ultraviolet ionizing background (UVB): Bright quasars (QSOs) generate a hard UVB with predominantly large-scale fluctuations while Population II stars generate a softer one with smaller-scale fluctuations. Metal absorbers probe the UVB's slope because different ions are sensitive to different energies. Likewise, they probe spatial fluctuations because they originate in regions where a galaxy-driven UVB is harder and more intense. We take a first step towards studying the reionization-epoch UVB's slope and inhomogeneity by comparing observations of 12 metal absorbers at $z\sim6$ versus predictions from a cosmological hydrodynamic simulation using three different UVBs: a soft, spatially-inhomogeneous "galaxies+QSOs" UVB; a homogeneous "galaxies+QSOs" UVB (Haardt & Madau 2012); and a QSOs-only model. All UVBs reproduce the observed column density distributions of CII, SiIV, and CIV reasonably well although high-column, high-ionization absorbers are underproduced, reflecting numerical limitations. With upper limits treated as detections, only a soft, fluctuating UVB reproduces both the observed SiIV/CIV and CII/CIV distributions. The QSOs-only UVB overpredicts both CIV/CII and CIV/SiIV, indicating that it is too hard. The Haardt & Madau (2012) UVB underpredicts CIV/SiIV, suggesting that it lacks amplifications near galaxies. Hence current observations prefer a soft, fluctuating UVB as expected from a predominantly Population II background although they cannot rule out a harder one. Future observations probing a factor of two deeper in metal column density will distinguish between the soft, fluctuating and QSOs-only UVBs.
description: 13 pages, 10 figures, re-submitted to MNRAS after incorporating referee's suggestions
Nonperturbative dynamics of (2+1)d $ϕ^4$-theory from Hamiltonian truncation
Creators: name: Anand, Nikhil
name: Katz, Emanuel
name: Khandker, Zuhair U.
name: Walters, Matthew T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We use Lightcone Conformal Truncation (LCT) -- a version of Hamiltonian truncation -- to study the nonperturbative, real-time dynamics of $ϕ^4$-theory in 2+1 dimensions. This theory has UV divergences that need to be regulated. We review how, in a Hamiltonian framework with a total energy cutoff, renormalization is necessarily \emph{state-dependent}, and UV sensitivity cannot be canceled with standard local operator counterterms. To overcome this problem, we present a prescription for constructing the appropriate state-dependent counterterms for (2+1)d $ϕ^4$-theory in lightcone quantization. We then use LCT with this counterterm prescription to study $ϕ^4$-theory, focusing on the $\mathbb{Z}_2$ symmetry-preserving phase. Specifically, we compute the spectrum as a function of the coupling and demonstrate the closing of the mass gap at a (scheme-dependent) critical coupling. We also compute Lorentz-invariant two-point functions, both at generic strong coupling and near the critical point, where we demonstrate IR universality and the vanishing of the trace of the stress tensor.
description: 33 pages + appendices, 14 figures; references added
Bichromatic magneto-optical trapping for $ J\rightarrow J,J-1 $ configurations
Creators: name: Cournol, Anne
name: Pillet, Pierre
name: Lignier, Hans
name: Comparat, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A magneto-optical trap (MOT) of atoms or molecules is studied when two lasers of different detunings and polarization are used. Especially for $J\rightarrow J,J-1$ transitions, a scheme using more than one frequency per transition and different polarization is required to create a significant force. Calculations have been performed with the simplest forms of the $J\rightarrow J-1$ case (i.e. $J''=1 \rightarrow J'=0$) and $J\rightarrow J$ case (i.e. $J''=1/2 \rightarrow J'=1/2$). A one dimensional (1D) model is presented and a complete 3D simulation using rate equations confirm the results. Even in the absence of Zeeman effect in the excited state, where no force is expected in the single laser field configuration, we show that efficient cooling and trapping forces are restored in our configuration. We study this mechanism for the C$_2^-$ molecular anion as a typical example of the interplay between the two simple transitions $J \rightarrow J,J-1$.
description: 7 pages, 6 figures
title: Anpassen, aneignen, abgrenzen: Interdisziplinäre Arbeiten zur langen Geschichte der Wende
Creators: name: Schröter, Anja
name: Villinger, Clemens
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2019

description: Wer die lange Geschichte der „Wende“ und den Zusammenhang von Lebenswelt und Systemwechsel erforschen will, sieht sich mit einer Zweiteilung der Quellenüberlieferung konfrontiert. Während für die Phase bis 1989 und auch die Epochenzäsur 1989/90 häufig klassische Archivakten bereitstehen, ist die Überlieferung für die Zeit danach überwiegend von den Forschungsdaten der Sozialwissenschaften geprägt. Es ist also interdisziplinäres Arbeiten gefragt. Dabei geht es nicht nur um die geschichtswissenschaftliche Nutzung und Interpretation „fachfremder“ Quellen oder den Rückgriff auf Methoden anderer Disziplinen, sondern auch um die Weiterentwicklung von Methoden gemeinsam mit Wissenschaftler*innen anderer Fachrichtungen. Drei Szenarien seien hier skizziert.
Standard Model from A Supergravity Model with a Naturally Small Cosmological Constant
Creators: name: Li, Shing Yan
name: Qiu, Yu-Cheng
name: Tye, S. -H. Henry
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Guided by the naturalness criterion for an exponentially small cosmological constant, we present a string theory motivated 4-dimensional $\mathcal{N}=1$ non-linear supergravity model (or its linear version with a nilpotent superfield) with spontaneous supersymmetry breaking. The model encompasses the minimal supersymmetric standard model, the racetrack Kähler uplift, and the KKLT anti-$\rm D3$-branes, and use the nilpotent superfield to project out the undesirable interaction terms as well as the unwanted degrees of freedom to end up with the standard model (not the supersymmetric version) of strong and electroweak interactions.
description: 6 pages
Impact of Covid-19 on the stress level and functionality of Autistic Children and Their Parents, in Egypt: A Cross Sectional study
Creators: name: Gihan Mohamed Mohamed Salem
name: Shimmaa Mansour Moustafa Mohammed;
Publisher: name: OSF Registries
Year: 2027
Subjects: subject: Pediatric Nursing
subject: Medicine and Health Sciences
subject: Psychiatric and Mental Health Nursing
subject: Nursing
subject: FOS: Health sciences

description: This study aimed to explore the impact of COVID-19 pandemic on autistic children and their parents' stress level and functionality. it is a descriptive cross-sectional study was conducted on a convenient sample of 80 Parent of autistic children who used to get therapeutic services for their autistic children at two centres, in Zagazig, Egypt. The collected data took place between June 2021 and September 2021 and included the characteristics of the autistic children and their parents, the impact of the pandemic on children and their parents’ stress and functionality. The study followed the STROBE reporting guideline for the cross-sectional studies.
Studies on the control of the number of large follicles and ovulation rate in the sheep
Creators: name: Fry., Richard Charles
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Mode Conversion and Period Doubling at Plasma-$β$ Unity in an Alfvén-Wave Experiment with Liquid Rubidium
Creators: name: Stefani, F.
name: Forbriger, J.
name: Gundrum, Th.
name: Herrmannsdörfer, T.
name: Wosnitza, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We report Alfvén-wave experiments with liquid rubidium at the Dresden High Magnetic Field Laboratory (HLD). Reaching up to 63 T, the pulsed magnetic field exceeds the critical value of 54 T at which the Alfvén speed becomes equal to the sound speed (plasma-$β$ unity). At this threshold we observe a period doubling of an applied 8 kHz CW excitation, a clear footprint for a parametric resonance between magnetosonic waves and Alfvén waves.
description: 5 pages, 4 figures
Dynamical Tadpoles and Weak Gravity Constraints
Creators: name: Mininno, Alessandro
name: Uranga, Angel M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-supersymmetric string models are plagued with tadpoles for dynamical fields, which signal uncanceled forces sourced by the vacuum. We argue that in certain cases, uncanceled dynamical tadpoles can lead to inconsistencies with quantum gravity, via violation of swampland constraints. We describe an explicit realization in a supersymmetric toroidal ${\textbf{Z}}_2\times{\textbf{Z}}_2$ orientifold with D7-branes, where the dynamical tadpole generated by displacement of the D7-branes off its minimum leads to violation of the axion Weak Gravity Conjecture. In these examples, cancellation of dynamical tadpoles provides consistency conditions for the configuration, of dynamical nature (as opposed to the topological conditions of topological tadpoles, such as RR tadpole cancellation in compact spaces). We show that this approach provides a re-derivation of the Z-minimization criterion for AdS vacua giving the gravitational dual of a-maximization in 4d $\mathcal{N}=1$ toric quiver SCFTs.
description: v3, added references, JHEP accepted, 34 pages + 1 appendix, 3 figures
Klein factors and Fermi-Bose Equivalence
Creators: name: Lee, Taejin
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Generalizing the kink operator of the Heisenberg spin 1/2 model, we construct a set of Klein factors explicitly such that $(1+1)$ dimensional fermion theories with arbitrary number of species are mapped onto the corresponding boson theories with the same number of species and vice versa. The actions for the resultant theories do not possess any nontrivial Klein factor. With this set of Klein factors, we are also able to map the simple boundary states such as the Neumann and the Dirichlet boundary states, of the fermion (boson) theory onto those of the boson (fermion) theory. Applications of the Fermi-Bose equivalence with the constructed Klein factors to well-known $(1+1)$ dimensional theories have been discussed.
description: 20 pages
Charge Algebra in Al(A)dS$_n$ Spacetimes
Creators: name: Fiorucci, Adrien
name: Ruzziconi, Romain
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The gravitational charge algebra of generic asymptotically locally (A)dS spacetimes is derived in $n$ dimensions. The analysis is performed in the Starobinsky/Fefferman-Graham gauge, without assuming any further boundary condition than the minimal falloffs for conformal compactification. In particular, the boundary structure is allowed to fluctuate and plays the role of source yielding some symplectic flux at the boundary. Using the holographic renormalization procedure, the divergences are removed from the symplectic structure, which leads to finite expressions. The charges associated with boundary diffeomorphisms are generically non-vanishing, non-integrable and not conserved, while those associated with boundary Weyl rescalings are non-vanishing only in odd dimensions due to the presence of Weyl anomalies in the dual theory. The charge algebra exhibits a field-dependent $2$-cocycle in odd dimensions. When the general framework is restricted to three-dimensional asymptotically AdS spacetimes with Dirichlet boundary conditions, the $2$-cocycle reduces to the Brown-Henneaux central extension. The analysis is also specified to leaky boundary conditions in asymptotically locally (A)dS spacetimes that lead to the $Λ$-BMS asymptotic symmetry group. In the flat limit, the latter contracts into the BMS group in $n$ dimensions.
description: 48 pages, 1 figure, published version
A magneto-viscoelasticity problem with a singular memory kernel
Creators: name: Carillo, Sandra
name: Chipot, Michel
name: Valente, Vanda
name: Caffarelli, Giorgio Vergara
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The existence of solutions to a one-dimensional problem arising in magneto-viscoelasticity is here considered. Specifically, a non-linear system of integro-differential equations is analyzed, it is obtained coupling an integro-differential equation modeling the viscoelastic behaviour, in which the kernel represents the relaxation function, with the non-linear partial differential equations modeling the presence of a magnetic field. The case under investigation generalizes a previous study since the relaxation function is allowed to be unbounded at the origin, provided it belongs to $L^1$; the magnetic model equation adopted, as in the previous results [21,22, 24, 25] is the penalized Ginzburg-Landau magnetic evolution equation.
description: original research article
Elliptic Anisotropy $v_2$ May Be Dominated by Particle Escape instead of Hydrodynamic Flow
Creators: name: Lin, Zi-Wei
name: He, Liang
name: Edmonds, Terrence
name: Liu, Feng
name: Molnar, Denes
name: Wang, Fuqiang
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: It is commonly believed that azimuthal anisotropies in relativistic heavy ion collisions are generated by hydrodynamic evolution of the strongly interacting quark-gluon plasma. Here we use transport models to study how azimuthal anisotropies depend on the number of collisions that each parton suffers. We find that the majority of $v_2$ comes from the anisotropic escape of partons, not from the parton collective flow, for semi-central Au+Au collisions at 200A GeV. As expected, the fraction of $v_2$ from the anisotropic particle escape is even higher for smaller systems such as d+Au. Our transport model results also confirm that azimuthal anisotropies would be dominated by hydrodynamic flow at unrealistically-high parton cross sections. Our finding thus naturally explains the similarity of azimuthal anisotropies in small and large systems; however, it presents a challenge to the paradigm of anisotropic flow.
description: 4 pages, 5 figures, Quark Matter 2015 proceedings
On the Boussinesq equations with non-monotone temperature profiles
Creators: name: Zillinger, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q79, 35Q35, 76D05, 35B40

description: In this article we consider the asymptotic stability of the two-dimensional Boussinesq equations with partial dissipation near a combination of Couette flow and temperature profiles $T(y)$. As a first main result we show that if $T'$ is of size at most $ν^{1/3}$ in a suitable norm, then the linearized Boussinesq equations with only vertical dissipation of the velocity but not of the temperature are stable. Thus, mixing enhanced dissipation can suppress Rayleigh-Bénard instability in this linearized case. We further show that these results extend to the (forced) nonlinear equations with vertical dissipation in both temperature and velocity.
description: 30 pages; updated and added references
Trap assisted tunneling and its effect on subthreshold swing of tunnel field effect transistors
Creators: name: Sajjad, Redwan N.
name: Chern, Winston
name: Hoyt, Judy L.
name: Antoniadis, Dimitri A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We provide a detailed study of the interface Trap Assisted Tunneling (TAT) mechanism in tunnel field effect transistors to show how it contributes a major leakage current path before the Band To Band Tunneling (BTBT) is initiated. With a modified Shockley-Read-Hall formalism, we show that at room temperature, the phonon assisted TAT current always dominates and obscures the steep turn ON of the BTBT current for common densities of traps. Our results are applicable to top gate, double gate and gate all around structures where the traps are positioned between the source-channel tunneling region. Since the TAT has strong dependence on electric field, any effort to increase the BTBT current by enhancing local electric field also increases the leakage current. Unless the BTBT current can be increased separately, calculations show that the trap density Dit has to be decreased by 40-100 times compared with the state of the art in order for the steep turn ON (for III-V materials) to be clearly observable at room temperature. We find that the combination of the intrinsic sharpness of the band edges (Urbach tail) and the surface trap density determines the subthreshold swing.