cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Extremal Islands Made Easy, PartIII: Complexity on the Brane
Creators: name: Hernandez, Juan
name: Myers, Robert C.
name: Ruan, Shan-Ming
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 examine holographic complexity in the doubly holographic model introduced in [arXiv:2006.04851][arXiv:2010.00018] to study quantum extremal islands. We focus on the holographic complexity=volume (CV) proposal for boundary subregions in the island phase. Exploiting the Fefferman-Graham expansion of the metric and other geometric quantities near the brane, we derive the leading contributions to the complexity and interpret these in terms of the generalized volume of the island derived from the induced higher-curvature gravity action on the brane. Motivated by these results, we propose a generalization of the CV proposal for higher curvature theories of gravity. Further, we provide two consistency checks of our proposal by studying Gauss-Bonnet gravity and f(R) gravity in the bulk.
description: 45+5pages, 5 figures
Asymptotic Analysis of Losses in the $GI/M/m/n$ Queueing System as $n$ Increases to Infinity
Creators: name: Abramov, Vyacheslav M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25, 40E05

description: The paper studies asymptotic behavior of the loss probability for the $GI/M/m/n$ queueing system as $n$ increases to infinity. The approach of the paper is based on applications of classic results of Takács (1967) and the Tauberian theorem with remainder of Postnikov (1979-1980) associated with the recurrence relation of convolution type. The main result of the paper is associated with asymptotic behavior of the loss probability. Specifically it is shown that in some cases (precisely described in the paper) where the load of the system approaches 1 from the left and $n$ increases to infinity, the loss probability of the $GI/M/m/n$ queue becomes asymptotically independent of the parameter $m$.
description: 23 pages, 12pt, 1 table, to apear in "Quality Technology and Quantitative Management"
Nonlinear intraband tunneling of BEC in a cubic three-dimensional lattice
Creators: name: Shchesnovich, V. S.
name: Konotop, V. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The intra-band tunneling of a Bose-Einstein condensate between three degenerate high-symmetry X-points of the Brillouin zone of a cubic optical lattice is studied in the quantum regime by reduction to a three-mode model. The mean-field approximation of the deduced model is described. Compared to the previously reported two-dimensional (2D) case [Phys. Rev. A 75, 063628 (2007)], which is reducible to the two-mode model, in the case under consideration there exist a number of new stable stationary atomic distributions between the X-points and a new critical lattice parameter. The quantum collapses and revivals of the atomic population dynamics are absent for the experimentally realizable time span. The 2D stationary configurations, embedded into the 3D lattice, turn out to be always unstable, while existence of a stable 1D distribution, where all atoms populate only one X-state, may serve as a starting point in the experimental study of the nonlinear tunneling in the 3D lattice.
description: 13 pages, 10 figures, accepted to PRA
Point-Like Graviton Scattering in Plane-Wave Matrix Model
Creators: name: Shin, Hyeonjoon
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a plane-wave matrix model we discuss a two-body scattering of gravitons in the SO(3) symmetric space. In this case the graviton solutions are point-like in contrast to the scattering in the SO(6) symmetric space where spherical membranes are interpreted as gravitons. We concentrate on a configuration in the 1-2 plane where a graviton rotates with a constant radius and the other one elliptically rotates. Then the one-loop effective action is computed by using the background field method. As the result, we obtain the 1/r^7-type interaction potential, which strongly suggests that the scattering in the matrix model would be closely related to that in the light-front eleven-dimensional supergravity.
description: 17 pages, 1 figure, LaTeX, v2) references added
Mixed sums of squares and triangular numbers
Creators: name: Sun, Zhi-Wei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11E25; 05A30; 11B65; 11D85; 11P99

description: By means of $q$-series, we prove that any natural number is a sum of an even square and two triangular numbers, and that each positive integer is a sum of a triangular number plus $x^2+y^2$ for some integers $x$ and $y$ with $x\not\equiv y (mod 2)$ or $x=y>0$. The paper also contains some other results and open conjectures on mixed sums of squares and triangular numbers.
description: 11 pages
Evangelische Arbeitsstelle Ökumene Schweiz: Was bekennen die evangelischen Kirchen in der Schweiz
Creators: name: Vo.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 36 Nr. 4 (1987): Ökumenische Rundschau, Band 36, Heft 4
STRUCTURAL AND OPTICAL PROPERTIES OF CU2ZNSNS4 FILMS DEPOSITION BY SCREEN COATING TECHNIQUE OF SOL-GEL PROCESS
Creators: name: Nuttee Khottoommee
Publisher: name: Sakon Nakhon Press
Year: 2015
Subjects: CZTS, Copper Zinc Tin Sulfide, TFSCs, Wet-gel, Absorb layer

description: 2, 7, SNRU Journal of Science and Technology
Nonlocal impedances and the Casimir entropy at low temperatures
Creators: name: Svetovoy, V.
name: Esquivel-Sirvent, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The problem with the temperature dependence of the Casimir force is investigated. Specifically, the entropy behavior in the low temperature limit, which caused debates in the literature, is analyzed. It is stressed that the behavior of the relaxation frequency in the $T\to0$ limit does not play a physical role since the anomalous skin effect dominates in this range. In contrast with the previous works, where the approximate Leontovich impedance was used for analysis of nonlocal effects, we give description of the problem in terms of exact nonlocal impedances. It is found that the Casimir entropy is going to zero at $T\to0$ only in the case when $s$ polarization does not contribute to the classical part of the Casimir force. However, the entropy approaching zero from the negative side that, in our opinion, cannot be considered as thermodynamically satisfactory. The resolution of the negative entropy problem proposed in the literature is analyzed and it is shown that it cannot be considered as complete. The crisis with the thermal Casimir effect is stressed.
description: Accepted in Phys. Rev. E
The luminous red nova variety: AT 2020hat and AT 2020kog
Creators: name: Pastorello, A.
name: Valerin, G.
name: Fraser, M.
name: Elias-Rosa, N.
name: Valenti, S.
name: Reguitti, A.
name: Mazzali, P. A.
name: Amaro, R. C.
name: Andrews, J. E.
name: Dong, Y.
name: Jencson, J.
name: Lundquist, M.
name: Reichart, D. E.
name: Sand, D. J.
name: Wyatt, S.
name: Smartt, S. J.
name: Smith, K. W.
name: Srivastav, S.
name: Cai, Y. -Z.
name: Cappellaro, E.
name: Holmbo, S.
name: Fiore, A.
name: Jones, D.
name: Kankare, E.
name: Karamehmetoglu, E.
name: Lundqvist, P.
name: Morales-Garoffolo, A.
name: Reynolds, T. M.
name: Stritzinger, M. D.
name: Williams, S. C.
name: Chambers, K. C.
name: de Boer, T. J. L.
name: Huber, M. E.
name: Rest, A.
name: Wainscoat, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of our monitoring campaigns of the luminous red novae (LRNe) AT 2020hat in NGC 5068 and AT 2020kog in NGC 6106. The two objects were imaged (and detected) before their discovery by routine survey operations. They show a general trend of slow luminosity rise, lasting at least a few months. The subsequent major LRN outbursts were extensively followed in photometry and spectroscopy. The light curves present an initial short-duration peak, followed by a redder plateau phase. AT 2020kog is a moderately luminous event peaking at ~7 x 10^40 erg/s, while AT 2020hat is almost one order of magnitude fainter than AT 2020kog, although it is still more luminous than V838 Mon. In analogy with other LRNe, the spectra of AT 2020kog change significantly with time. They resemble those of type IIn supernovae at early phases, then they become similar to those of K-type stars during the plateau, and to M-type stars at very late phases. In contrast, AT 2020hat already shows a redder continuum at early epochs, and its spectrum shows the late appearance of molecular bands. A moderate-resolution spectrum of AT 2020hat taken at +37 d after maximum shows a forest of narrow P Cygni lines of metals with velocities of 180 km/s, along with an Halpha emission with a full-width at half-maximum velocity of 250 km/s. For AT 2020hat, a robust constraint on its quiescent progenitor is provided by archival images of the Hubble Space Telescope. The progenitor is clearly detected as a mid-K type star, with an absolute magnitude of MF606W = -3.33+-0.09 mag and a colour of F606W-F814W = 1.14+-0.05 mag, which are inconsistent with the expectations from a massive star that could later produce a core-collapse supernova. Although quite peculiar, the two objects nicely match the progenitor versus light curve absolute magnitude correlations discussed in the literature.
description: 14 pages, 9 figures, 2 tables. Accepted for publication in A&A
Dimensional similitude and the hydrodynamics of three-phase fluidized beds
Creators: name: Safoniuk, Michael
Publisher: name: University of British Columbia
Year: 2009

description: It is proposed that scaling of three-phase fluidized bed hydrodynamics can be carried out based on geometric similarity and matching of a set of five dimensionless groups: (i) the M-group, M=g-Δρ-μ[sub L]⁴/(ρ[sub L]²-σ³); (ii) an Eotvds number, Eo=g-Δρ-d[sub p]²/σ; (iii) the liquid Reynolds number, Re[sub L] = ρ[sub L]-d[sub p]-U[sub L]/μ[sub L]; (iv) a density ratio, β[sub d]= ρ[sub p]/ ρ[sub L]; and (v) a superficial velocity ratio, β[sub u]=U[sub g]/U[sub L]. These were varied in an experimental study where four dimensionless hydrodynamic parameters were measured: (i) gas hold-up, ε[sub g]; (ii) bed expansion ratio, β[sub be]; (iii) the ratio of mean bubble diameter to particle diameter, d[sub b]/d[sub p]; and (iv) the ratio of mean bubble rise velocity to gas superficial velocity, U[sub b]/U[sub g] . This approach was validated experimentally by matching the dimensionless operating conditions from a kerosene-nitrogen-ceramic three-phase system with those in an aqueous magnesium sulphate solution-air-aluminum particle fluidized bed. There was good agreement between the gas hold-ups and bed expansion ratios in the two systems. A pilot-plant scale cold-flow co-current upwards-flowing three-phase fluidized bed column of inside diameter 292 mm was built and operated using three different liquids (tap water, an aqueous 44 mass % glycerol solution, and an aqueous 60 mass % glycerol solution), air, and cylindrical aluminum particles of diameter 4 mm and length 10 mm. The fluids and solids were carefully selected to result in dimensionless group values in the range of those of an industrial hydroprocessor. Specially built conductivity probes and pressure transducers were used to measure the hydrodynamic properties for different gas and liquid superficial velocities. Special attention was required to provide for drift and calibration when recording and analyzing data from the conductivity probes. Gas hold-ups were in the range of 5 to 20% by volume and were correlated as a function of liquid-phase Reynolds number and superficial velocity ratio. The gas hold-ups were a strong function of the velocity ratio with little influence of the liquid-phase Reynolds number. Bed expansion, in the range of 0-200%, was similarly correlated. Although bed expansion was dependent on the velocity ratio, the liquid Reynolds number had a much more significant influence. Bubble rise velocities, pierced chord lengths, and frequencies were also determined for a range of operating conditions A new approach for estimating gas hold-up based on the gas-perturbed liquid model, using calculated values of interstitial liquid velocity, was also developed. This approach gave favorable agreement with gas hold-up measurements based on pressure drops.
MHD Simulations of Relic Radio Bubbles in Clusters
Creators: name: Jones, T. W.
name: DeYoung, D. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In order to better understand the origin and evolution of relic radio bubbles in clusters of galaxies, we report on an extensive set of 2D MHD simulations of hot buoyant bubbles evolving in a realistic intracluster medium. Our bubbles are inflated near the base of the ICM over a finite time interval from a region whose magnetic field is isolated from the ICM. We confirm both the early conjecture from linear analysis and the later results based on preformed MHD bubbles; namely, that very modest ICM magnetic fields can stabilize the rising bubbles against disruption by Rayleigh-Taylor and Kelvin-Helmholtz instabilities. We find in addition that amplification of the ambient fields as they stretch around the bubbles can be sufficient to protect the bubbles or their initial fragments even if the fields are initially much too weak to play a significant role early in the evolution of the bubbles. Indeed, even with initial fields less than a micro-Gauss and values of $β= P_g/P_b$ approaching $10^5$, magnetic stresses in our simulations eventually became large enough to influence the bubble evolution. Magnetic field influence also depends significantly on the geometry of the ICM field and on the topology of the field at the bubble/ICM interface. For example, reconnection of anti-parallel fields across the bubble top greatly reduced the ability of the magnetic field to inhibit disruptive instabilities. Our results confirm earlier estimates of $10^8$ yr for relic radio bubble lifetimes and show that magnetic fields can account for the long term stability of these objects against disruption by surface instabilities. In addition these calculations show that lifting and mixing of the ambient ICM may be a critical function of field geometries in both the ICM and in the bubble interior.
description: 39 pages, 11 figures, ApJ in press
Digital-born editing models for Historical Linguistics studies
Creators: name: Bermúdez Sabel, Helena
Publisher: name: Zenodo
Year: 2024
Subjects: historical linguistics
digital editions
Digital Humanities
TEI
corpus linguistics

description: Presentation of the talk "Digital-born editing models for Historical Linguistics studies", held at the University of Rostock on June, 12, 2023 in the lecture series "Digital Humanities im Fokus: Methoden, Anwendungen und Perspektiven". The slides are also available in HTML format: https://helenasabel.github.io/presentations/RosDH.html

Abstract:

In the last decade, we have seen an increase of corpus-based approaches within the Historical Linguistics field, a domain in which approaches based on selected examples have traditionally been predominant. This presentation will discuss the importance of specific data models than enable quantitative corpus methods in Historical Linguistics research. Through the discussion of a particular use case, I will address information representation strategies by means of a TEI-compliant modelisation of the critical apparatus in order to enable its quantitative analysis in general, and the study of linguistic variation among witnesses in particular. The talk will also include a brief presentation of resources that facilitate the creation and exploitation of historical corpora, highlighting its advantages and deficiencies.

Bio:

Helena Bermúdez Sabel ist promovierte Mediävistin (Universidade de Santiago de Compostela, 2019), die sich auf den Bereich der digitalen Geisteswissenschaften spezialisiert hat. Ihre Forschungsschwerpunkte umfassen historische Korpuslinguistik, computergestützte Literaturwissenschaft und computergestützte Philologie. Seit Januar 2021 ist sie Mitglied des Technischen Rats der Text Encoding Initiative.
Not So Strange Bedfellows: Information Standards for Librarians AND Publishers
Creators: name: Landesman, Betty
name: Heyman, Marti
Publisher: name: Maryland Shared Open Access Repository
Year: 2015
Subjects: Information Standards

description: Poster session presented at the Charleston Conference: Issues in Book and Serial Acquisition, November 6, 2015.
description: As our collections become increasingly electronic, standards play an increasingly important role not only in the work of librarians but also in that of publishers. This session will describe standards and recommended practices that are designed to support the publishing, identification, and retrieval of electronic materials, including KBART (Knowledge Bases and Related Tools), the DOI (Digital Object Identifiers), and EPUB (not an acronym...). What are they, what do they do, how do they relate to the work of a broad spectrum of attendees, and particularly why we should care. The presenters are co-chairs of the NISO (National Information Standards Organization) Content and Collection Management Topic Committee.

The objectives of the session are to demystify the alphabet soup of standards and to highlight practices that will help us to better serve our users. The audience will be encouraged to ask questions and to discuss. Attendees can expect to learn about a focused, relevant set of standards and best practices and how they directly affect the attendees and their work.
description: http://schd.ws/hosted_files/2015charlestonconference/0b/Strange_Bedfellows_Charleston2015%20rev_Final.pptx
Temperature Dependence of the Chemical Potential in NaxCoO2: Implications for the Large Thermoelectric Power
Creators: name: Ishida, Y.
name: Ohta, H.
name: Fujimori, A.
name: Hosono, H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed a temperature-dependent photoemission study of a NaxCoO2 (x~0.8) epitaxial thin film prepared by the reactive solid-phase epitaxy method. The chemical potential shift as a function of temperature was derived from the Co 3d peak shift, and revealed a crossover from the degenerate Fermion state at low temperatures to the correlated hopping state of Co3+/Co4+ mixed-valence at high temperatures. This suggests that the large thermoelectric power at high temperatures should be considered in the correlated hopping picture.
description: 5 pages, 4 figures
Time-space fabric underlying anomalous diffusion
Creators: name: Chen, W
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 62-xx; 26Axx; 28Axx

description: This study unveils the time-space transforms underlying anomalous diffusion process. Based on this finding, we present the two hypotheses concerning the effect of fractal time-space fabric on physical behaviors and accordingly derive fractional quantum relationships between energy and frequency, momentum and wavenumber which further give rise to fractional Schrodinger equation. As an alternative modeling approach to the standard fractional derivatives, we introduce the concept of the Hausdorff derivative underlying the Hausdorff dimensions of metric spacetime. And in terms of the proposed hypotheses, the Hausdorff derivative is used to derive a linear anomalous transport-diffusion equation underlying anomalous diffusion process. Its Green's function solution turns out to be a new type of stretched Gaussian distribution and is compared with that from the Richardson's diffusion equation.
description: Comments please go to chen_wen@iapcm.ac.cn
Fahlbusch, Erwin, Lochman, Jan Milic, Mbiti, John, Pelikan, Jaroslav: Evangelisches Kirchenlexikon
Creators: name: Krüger, Hanfried
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 36 Nr. 4 (1987): Ökumenische Rundschau, Band 36, Heft 4
Fluctuation guided search in quantum annealing
Creators: name: Chancellor, Nicholas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum annealing has great promise in leveraging quantum mechanics to solve combinatorial optimisation problems. However, to realize this promise to it's fullest extent we must appropriately leverage the underlying physics. In this spirit, I examine how the well known tendency of quantum annealers to seek solutions where more quantum fluctuations are allowed can be used to trade off optimality of the solution to a synthetic problem for the ability to have a more flexible solution, where some variables can be changed at little or no cost. I demonstrate this tradeoff experimentally using the reverse annealing feature a D-Wave Systems QPU for both problems composed of all binary variables, and those containing some higher-than-binary discrete variables. I further demonstrate how local controls on the qubits can be used to control the levels of fluctuations and guide the search. I discuss places where leveraging this tradeoff could be practically important, namely in hybrid algorithms where some penalties cannot be directly implemented on the annealer and provide some proof-of-concept evidence of how these algorithms could work.
description: 13 pages, 21 figures, associated dataset can be found at http://doi.org/10.15128/r1c534fn95w discussion, typo corrections, and reference to dataset added in v2, referee suggested changes made in v3 in including major restructuring, but no changes made to scientific content, accepted in PRA
Model-free hidden geometry of complex networks
Creators: name: Zhang, Yi-Jiao
name: Yang, Kai-Cheng
name: Radicchi, Filippo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The fundamental idea of embedding a network in a metric space is rooted in the principle of proximity preservation. Nodes are mapped into points of the space with pairwise distance that reflects their proximity in the network. Popular methods employed in network embedding either rely on implicit approximations of the principle of proximity preservation or implement it by enforcing the geometry of the embedding space, thus hindering geometric properties that networks may spontaneously exhibit. Here, we take advantage of a model-free embedding method explicitly devised for preserving pairwise proximity, and characterize the geometry emerging from the mapping of several networks, both real and synthetic. We show that the learned embedding has simple and intuitive interpretations: the distance of a node from the geometric center is representative for its closeness centrality, and the relative positions of nodes reflect the community structure of the network. Proximity can be preserved in relatively low-dimensional embedding spaces, and the hidden geometry displays optimal performance in guiding greedy navigation regardless of the specific network topology. We finally show that the mapping provides a natural description of contagion processes on networks, with complex spatiotemporal patterns represented by waves propagating from the geometric center to the periphery. The findings deepen our understanding of the model-free hidden geometry of complex networks.
description: 15 pages, 12 figures, 1 table
Taste symmetry breaking with HYP-smeared staggered fermions
Creators: name: Bae, Taegil
name: Adams, David H.
name: Jung, Chulwoo
name: Kim, Hyung-Jin
name: Kim, Jongjeong
name: Kim, Kwangwoo
name: Lee, Weonjong
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the impact of hypercubic (HYP) smearing on the size of taste breaking for staggered fermions, comparing to unimproved and to asqtad-improved staggered fermions. As in previous studies, we find a substantial reduction in taste-breaking compared to unimproved staggered fermions (by a factor of 4-7 on lattices with spacing $a\approx 0.1 $fm). In addition, we observe that discretization effects of next-to-leading order in the chiral expansion (${\cal O}(a^2 p^2)$) are markedly reduced by HYP smearing. Compared to asqtad valence fermions, we find that taste-breaking in the pion spectrum is reduced by a factor of 2.5-3, down to a level comparable to the expected size of generic ${\cal O}(a^2)$ effects. Our results suggest that, once one reaches a lattice spacing of $a\approx 0.09 $fm, taste-breaking will be small enough after HYP smearing that one can use a modified power counting in which ${\cal O}(a^2) \ll {\cal O}(p^2)$, simplify fitting to phenomenologically interesting quantities.
description: 14 pages, 13 figures, references updated, minor changes
THE FREQUENCY OF OCCURRENCE OF PATIENTS WITH DENTAL DISEASES AMONG EMPLOYEES OF A CHEMICAL ENTERPRISE, THEIR SPECIFIC CLINIC AND COMPREHENSIVE TREATMENT MEASURES USING NEW MODERN MEDICINES.
Creators: name: G'afforov, Sunatullo
name: Ibragimova, Feruza
Publisher: name: Zenodo
Year: 2024

description: The presence of high risks of occupational diseases among workers in industry has been proven. This is due to the entry of compounds of elements into the human body through the oral cavity (Lipanov G.Ya., Samylkin A.A., 2010; Adrianovsky V.I., 2015). Industrial workers are characterized by a high prevalence of dental caries and inflammatory periodontal diseases (Abdazimov A.D., 1990; Agafonov Yu.A., 2005; Kabirova M.F., 2013; Blashkova S.L., 2013).
Kinetic gravity braiding wormhole geometries
Creators: name: Korolev, Roman
name: Lobo, Francisco S. N.
name: Sushkov, Sergey V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An interesting class of scalar-tensor models, denoted by kinetic gravity braiding (KGB), has recently been proposed. These models contain interactions of the second derivatives of the scalar field that do not lead to additional degrees of freedom and exhibit peculiar features, such as an essential mixing of the scalar $ϕ$ and tensor kinetic $X$ terms. In this work, we consider the possibility that wormhole geometries are sustained by the KGB theory. More specifically, we present the full gravitational field equations in a static and spherically symmetric traversable wormhole background, and outline the general constraints at the wormhole throat, imposed by the flaring-out conditions. Furthermore, we present a plethora of analytical and numerical wormhole solutions by considering particular choices of the KGB factors. The analysis explicitly demonstrates that the KGB theory exhibits a rich structure of wormhole geometries, ranging from asymptotically flat solutions to asymptotically anti-de Sitter spacetimes.
description: 10 pages, 4 figures. V2: 11 pages, section on tidal forces added. Matches published version
Informal Networks, International Developments and the Founding of the First Interest-Representing Associations of Disabled People in Hungary in the Late Socialist Period (1970s – 1980s)
Creators: name: Baár, Monika
Publisher: name: Moving the Social
Year: 2015

description: The article focuses on the grassroots activities of disabled citizens in Hungary during the recent socialist period and relates to the emergence of the first two interest-representing organisations, the National Association of People with Physical Disabilities and the National Association of Parents of Children with Mental and Intellectual Disabilities in 1981. By contextualising the disabled people’s activities within the state socialist system, the article also contemplates the broader question if and to what extent it is possible to speak about a “social movement” and how the Hungarian disabled people’s activities compare to those of disabilty rights movement participants elsewhere in the world. With regard to the specific traits of the Hungarian case, the article emphasises the crucial role of informal networks. Moreover, it argues that contrary to other (capitalist) countries where the efforts of self-determination were directed against the patronising attidues of medical and professional experts, disabled activists in Hungary were actively and wholeheartedly assisted in their emancipatory desires by these professional groups. Last but not least, the article points to the significance of international connections and accommodates the activities of Hungarian disabled people within international developments and particularly within the increased activities in several countries during the International Year of Disabled Persons (1981).
description: Moving the Social, Vol 53 (2015): Disability Movements: National Policies and Transnational Perspectives
Improving models of the cosmic infrared background using CMB lensing mass maps
Creators: name: McCarthy, Fiona
name: Madhavacheril, Mathew S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The cosmic infrared background (CIB) sourced by infrared emission from dusty star-forming galaxies is a valuable source of information on the star formation history of the Universe. In measurements of the millimeter sky at frequencies higher than $\sim 300$ GHz, the CIB and thermal emission from Galactic dust dominate. A limited understanding of the CIB contribution at lower frequencies on the other hand can hinder efforts to measure the kinetic Sunyaev-Zeldovich spectrum on small scales as well as new physics that affects the damping tail of the cosmic microwave background (CMB). The Planck satellite has measured with high fidelity the CIB at 217, 353, 545 and 857 GHz. On very large scales, this measurement is limited by our ability to separate the CIB from Galactic dust, but on intermediate scales, the measurements are limited by sample variance in the underlying matter field traced by the CIB. We show how significant improvements (20-100%) can be obtained on parameters of star formation models by cross-correlating the CIB (as measured from existing {\it Planck} maps or upcoming CCAT-prime maps) with upcoming mass maps inferred from gravitational lensing of the CMB. This improvement comes from improved knowledge of the redshift distribution of star-forming galaxies as well as through the use of the unbiased matter density inferred from CMB lensing mass maps to cancel the sample variance in the CIB field. We also find that further improvements can be obtained on CIB model parameters if the cross-correlation of the CIB with CMB lensing is measured over a wider area while restricting the more challenging CIB auto-spectrum measurement to the cleanest 5% of the sky.
description: 20 pages, 10 figures
The German Disability Movement as a Transnational, Entangled New Social Movement
Creators: name: Stoll, Jan
Publisher: name: Moving the Social
Year: 2015

description: The article examines the Disability Movement in West Germany in the 1970s and 1980s. Therefore, disability activism in West Germany is considered with regard to new social movement research. Furthermore, the author asks for local, regional and national action-frames and addressees of the Disability Movements, based on the assumption that a movement of people personally affected by disabilities will address the national welfare policy or civil rights issues, which are bound to national legislation. The movement initially aimed at local everyday life barriers or national civil rights and societal discrimination. Thus, its action-frames and addressees were spatially bounded. However, following processes of differentiation and professionalisation in the early 1980s, the movement broadened its transnational alliances. One example considered are the attempts for the de-institutionalisation of care and the enabling of self-determined Personal Assistance, which took place in exchange with activists of the Independent Living Movement in the United States. The other example considered is the campaign of German disability activists to support a group of revolutionary people with disabilities in Nicaragua, which sets the movement into the context of new social movements and the alternative milieu with its specific political expression, habits and style.
description: Moving the Social, Vol 53 (2015): Disability Movements: National Policies and Transnational Perspectives
“Guest Workers” and Trade Union Politics in the Ruhr Coalfield from the Late 1950s to the Early 1980s
Creators: name: Seidel, Hans-Christoph
Publisher: name: Moving the Social
Year: 2015

description: The article examines the West Germany miners union’s (Industriegewerkschaft Bergbau und Energie, IGBE) attitude towards Turkish migrant workers in the Ruhr coalfields between the 1960s and the 1980s. By the beginning of the 1970s, the Turkish migrant workers had evolved into an important part of the Ruhr mines’ workforce. The Ruhrkohle AG, the unitary enterprise (Einheitsunternehmen) of the Ruhr mining industry, was for a short period the largest employer of Turkish migrant workers in the Federal Republic. Despite not paying much attention to the needs of Turkish workers during the 1960s, at the beginning of the 1970s the IGBE undertook many initiatives to integrate the Turkish miners in the union organisation and their families into the miner communities. This resulted in the miners union and the Ruhr mining industry being perceived as a role model for progressive integration policies in the Federal Republic. However, in the 1980s the return assistant policy in the mining industry again stimulated conflict between trade union organisations and the Turkish workforce.
description: Moving the Social, Vol 54 (2015): Essays on social history and the history of social movements
Dispersive analysis of low energy $γ^* N\rightarrowπN$ process
Creators: name: Cao, Xiong-Hui
name: Ma, Yao
name: Zheng, Han-Qing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use a dispersion representation based on unitarity and analyticity to study the low energy $γ^* N\rightarrow πN$ process in the $S_{11}$ channel. Final state interactions among the $πN$ system are critical to this analysis. The left-hand part of the partial wave amplitude is imported from $\mathcal{O}(p^2)$ chiral perturbation theory result. On the right-hand part, the final state interaction is calculated through Omnès formula in $S$ wave. It is found that a good numerical fit can be achieved with only one subtraction parameter, and the eletroproduction experimental data of multipole amplitudes $E_{0+},\ S_{0+}$ in the energy region below $Δ(1232)$ are well described when the photon virtuality $Q^2 \leq 0.1 \mathrm{GeV}^2$.
description: 30 pages, 11 figures, 3 tables; to match the published version
Conference Report Summer School: Social Movements in Global Perspectives – Past, Present and Future
Creators: name: Gondorová, Eva
name: Teichmann, Ulf
Publisher: name: Moving the Social
Year: 2015

description: During the summer semester 2014, Stefan Berger and Sabrina Zajak from the Institute for Social Movement (ISB) convened an interdisciplinary summer school at Ruhr-Universität Bochum, entitled Social Movements in Global Perspectives: Past, Present and Future. The summer school was organised as part of the university’s inSTUDIES programme, aiming at the advancement of teaching and enhancement of individual student profiles. At the heart of the summer school was an international and interdisciplinary conference, which took place in September 2014.
description: Moving the Social, Vol 54 (2015): Essays on social history and the history of social movements
Uncertainty estimation for molecular dynamics and sampling
Creators: name: Imbalzano, Giulio
name: Zhuang, Yongbin
name: Kapil, Venkat
name: Rossi, Kevin
name: Engel, Edgar A.
name: Grasselli, Federico
name: Ceriotti, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Machine learning models have emerged as a very effective strategy to sidestep time-consuming electronic-structure calculations, enabling accurate simulations of greater size, time scale and complexity. Given the interpolative nature of these models, the reliability of predictions depends on the position in phase space, and it is crucial to obtain an estimate of the error that derives from the finite number of reference structures included during the training of the model. When using a machine-learning potential to sample a finite-temperature ensemble, the uncertainty on individual configurations translates into an error on thermodynamic averages, and provides an indication for the loss of accuracy when the simulation enters a previously unexplored region. Here we discuss how uncertainty quantification can be used, together with a baseline energy model, or a more robust although less accurate interatomic potential, to obtain more resilient simulations and to support active-learning strategies. Furthermore, we introduce an on-the-fly reweighing scheme that makes it possible to estimate the uncertainty in the thermodynamic averages extracted from long trajectories. We present examples covering different types of structural and thermodynamic properties, and systems as diverse as water and liquid gallium.
description: 17 pages, 9 figures
Subpolitics and the Campaign against Barclays’ Involvement in South Africa
Creators: name: Skovgaard, Jakob
Publisher: name: Moving the Social
Year: 2015

description: In this article I examine the context for the British bank Barclays’ decision to disinvest from South Africa in 1986, with special attention to the impact of the Anti-Apartheid Movement’s campaign against the bank. The 18-year long campaign against Barclays – the largest bank in South Africa at the time and the fourth largest foreign-owned corporation – points to significant developments within the fields of corporate social responsibility and the potential influence of social movements on multinational corporations. Applying the theoretical approach of subpolitics as developed by Ulrich Beck in combination with the later subdivision by Boris Holzer and Mads P. Sørensen into a passive and an active form, it is possible to analyse the decisions of both anti-apartheid activists and Barclays on similar terms. The conclusions drawn in this article emphasise the idea that economic decisions taken by multinational corporations may have unintended political consequences and, furthermore, that the awareness of this phenomenon has contributed to the development of corporate social responsibility. Finally, I suggest that the campaign against Barclays generated public attentiveness towards the social responsibility of businesses.
description: Moving the Social, Vol 54 (2015): Essays on social history and the history of social movements
Higher-derivative Heterotic Double Field Theory and Classical Double Copy
Creators: name: Lescano, Eric
name: Rodríguez, Jesús A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The generalized Kerr-Schild ansatz (GKSA) is a powerful tool for constructing exact solutions in Double Field Theory (DFT). In this paper we focus in the heterotic formulation of DFT, considering up to four-derivative terms in the action principle, while the field content is perturbed by the GKSA. We study the inclusion of the generalized version of the Green-Schwarz mechanism to this setup, in order to reproduce the low energy effective heterotic supergravity upon parametrization. This formalism reproduces higher-derivative heterotic background solutions where the metric tensor and Kalb-Ramond field are perturbed by a pair of null vectors. Next we study higher-derivative contributions to the classical double copy structure. After a suitable identification of the null vectors with a pair of $U(1)$ gauge fields, the dynamics is given by a pair of Maxwell equations plus higher derivative corrections in agreement with the KLT relation.
description: V2 includes: EOM's for fundamental fields (Sec. 4), explicit construction of the spin-connection (Sec. 5) and we relax the ortogonality condition for the null vectors (Sec. 6). We thank our anonymous JHEP referee for the suggestions
A Non-Manual for Developing Responsible Selfhood
Creators: name: Jones, Roger Dale
Publisher: name: KULT_online
Year: 2014

description: How can average individual citizens take responsibility for past crimes against humanity? How can they take active part in developing solutions without participating in the same systems of violence they struggle against? This book takes an interdisciplinary look at questions of responsible selfhood, and places its inspection on Germany during the Third Reich. Combining backgrounds in history, literary criticism, philosophy and theology, the four authors investigate the role that myths, lies, non-conformity and irony play in the construction of the “self”. By discussing the ambiguity behind these concepts, as well as the inherent instability of the self, the authors present strategies for developing responsible individuals who are happy to bear the burden of history.
description: KULT_online, Nr. 38 (2014): KULT_online 38 (2014)
Magnetic fields from reionisation
Creators: name: Langer, Mathieu
name: Aghanim, Nabila
name: Puget, Jean-Loup
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a complementary study to a new model for generating magnetic fields of cosmological interest. The driving mechanism is the photoionisation process by photons provided by the first luminous sources. Investigating the transient regime at the onset of inhomogeneous reionisation, we show that magnetic field amplitudes as high as $2 \times 10^{-16}$ Gauss can be obtained within a source lifetime. Photons with energies above the ionisation threshold accelerate electrons, inducing magnetic fields outside the Stroemgren spheres which surround the ionising sources. Thanks to their mean free path, photons with higher energies propagate further and lead to magnetic field generation deeper in the neutral medium. We find that soft X-ray photons could contribute to a significant premagnetisation of the intergalactic medium at a redshift of z=15.
description: accepted for publication in A&A
Nation, Folk and People: How to transport ideologies in language use
Creators: name: Koch, Natascha
Publisher: name: KULT_online
Year: 2014

description: In this book-length discussion, James Underhill aims at exploring the connection between metaphors, ideologies, and language. He provides both a profound discussion of a number of major contributions to the field of metaphor theory and cognitive linguistics from Aristotle to George Lakoff and Paul Ricœur and, in the second part, an analysis of the significant impact metaphor has on the creation of worldviews. For exemplification, Underhill surveys the manner of speaking of the Czech communist regime during the Cold War, German rhetoric in Nazi Germany and, finally, the relationship of English as a global language to other languages, especially French.
description: KULT_online, Nr. 38 (2014): KULT_online 38 (2014)
Comparison of SDL and LMC measures of complexity: Atoms as a testbed
Creators: name: Panos, C. P.
name: Chatzisavvas, K. Ch.
name: Moustakidis, Ch. C.
name: Kyrkou, E. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The "simple" measure of complexity of Shiner, Davison and Landsberg (SDL) and the "statistical" one, according to Lopez-Ruiz, Mancini and Calbet (LMC), are compared in atoms as functions of the atomic number Z. Shell effects i.e. local minima at the closed shells atoms are observed, as well as certain qualitative trends of SDL and LMC measueres of complexity. If we impose the condition that SDL and LMC behave similarly as functions of Z, then we can conclude that complexity increases with Z and for atoms the strength of disorder is zero and order is four.
description: 14 pages, 2 figures, revised version, accepted for publiaction in Physics Letters A
Andreas Neufert; Auf Liebe und Tod. Das Leben des Surrealisten Wolfgang Paalen
Creators: name: El Rafie, Timur Alexander
Publisher: name: Journal für Kunstgeschichte
Year: 2024

description: Rezension zu: Andreas Neufert; Auf Liebe und Tod. Das Leben des Surrealisten Wolfgang Paalen; Berlin: Parthas Verlag 2015; 688 S., 111 Abb.; ISBN 978-3-86964-083-9
description: Journal für Kunstgeschichte, Bd. 24 Nr. 1 (2020): Journal für Kunstgeschichte
Climate Change and the International Red Cross / Red Crescent Movement
Creators: name: Rosenow-Williams, Kerstin
Publisher: name: Moving the Social
Year: 2015

description: Only since the turn of the 21st century have humanitarian organisations developed specific strategies that address climate change impacts as a humanitarian challenge. Taking the International Red Cross / Red Crescent Movement, being the largest humanitarian network, as an empirical case study, the article discusses the Movement’s changes in the areas 1) agenda setting, 2) organisational restructuring, 3) networking, 4) programming, and 5) advocacy. Based on the case study and a theoretical framework of organisational sociology, the article provides conclusions on internal and external factors that can explain why the Movement has been successful in being one of the first actors within the organisational field of humanitarian organisations to focus systematically on the humanitarian implications of climatic changes.
description: Moving the Social, Vol 54 (2015): Essays on social history and the history of social movements
Conflicting Visions The Shaping of Industrial Relations in Japan and the Founding of the Friedrich- Ebert-Stiftung Asian Labour Institute
Creators: name: Heideck, Christian
Publisher: name: Moving the Social
Year: 2015

description: This research paper seeks to shed light on the involvement of the Friedrich Ebert Foundation (FES) and the trade unions of West Germany in the shaping of industrial relations in Japan. The period observed starts with the domestic crisis of 1960 flowing from the labour dispute at the Mitsui Miike coal mines and the renewal of the Japanese-American Security Treaty and concludes with the consolidation of industrial relations in Japan at the beginning of the 1970s. By examining the ways in which the key proponents with conflicting approaches toward Japan’s future industrial relations interacted with both the FES and West German trade union affiliates, it shall be demonstrated that the exchange between West Germany and Japan on trade union level provided positive impetus to the process of shaping industrial relations in Japan during the 1960s.
description: Moving the Social, Vol 54 (2015): Essays on social history and the history of social movements