cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
$σ$-SCF: A Direct Energy-targeting Method To Mean-field Excited States
Creators: name: Ye, Hong-Zhou
name: Wellborn, Matthew
name: Ricke, Nathan D.
name: Van Voorhis, Troy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The mean-field solutions of electronic excited states are much less accessible than ground state (e.g.\ Hartree-Fock) solutions. Energy-based optimization methods for excited states, like $Δ$-scf, tend to fall into the lowest solution consistent with a given symmetry -- a problem known as "variational collapse". In this work, we combine the ideas of direct energy-targeting and variance-based optimization in order to describe excited states at the mean-field level. The resulting method, $σ$-scf, has several advantages. First, it allows one to target any desired excited state by specifying a single parameter: a guess of the energy of that state. It can therefore, in principle, find \emph{all} excited states. Second, it avoids variational collapse by using a variance-based, unconstrained local minimization. As a consequence, all states -- ground or excited -- are treated on an equal footing. Third, it provides an alternate approach to locate $Δ$-scf solutions that are otherwise inaccessible by the usual non-aufbau configuration initial guess. We present results for this new method for small atoms (He, Be) and molecules (H2, HF).
description: This paper has been withdrawn by the author due to a crucial sign error in equation 13
Chiral conductivities and effective field theory
Creators: name: Jensen, Kristan
name: Kovtun, Pavel
name: Ritz, Adam
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the three-dimensional effective field theory which reproduces low-momentum static correlation functions in four-dimensional quantum field theories with U(1) axial anomalies and a dynamical vector gauge field, in thermal equilibrium. We compute radiative corrections to parity-violating chiral conductivities, to leading order in the effective theory. All of the anomaly-induced transport is susceptible to radiative corrections, except for certain two-point functions which are required by symmetry to vanish.
description: 53 pages, 2 figures
Inclusive $ψ$(2S) production at forward rapidity in pp, p-Pb and Pb-Pb collisions with ALICE at the LHC
Creators: name: Paul, Biswarup
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The ALICE Collaboration has studied inclusive $ψ$(2S) production in pp, p-Pb and Pb-Pb collisions with the ALICE Muon Spectrometer which covers the rapidity range 2.5 $<$ $y_{\rm lab}$ $<$ 4. The $ψ$(2S) measurement was performed in the dimuon decay channel. The $ψ$(2S) production cross-section and $ψ$(2S) to J/$ψ$ cross-section ratio in pp collisions will be presented, both integrated and differential in rapidity and in transverse momentum. In p-Pb collisions, $ψ$(2S) results will be compared to the J/$ψ$ ones by means of the production cross-section ratio and the double ratio [$ψ$(2S)/J/$ψ$]$_{\mathrm {pPb}}$/[$ψ$(2S)/J/$ψ$]$_{\mathrm {pp}}$ studied as a function of the resonance transverse momentum and event activity of the collision. The $ψ$(2S) nuclear modification factor, $R_{\mathrm {pPb}}$, will also be presented. Theoretical models based on nuclear shadowing, coherent energy loss or both cannot describe our results. Therefore other mechanisms must be invoked in order to describe the $ψ$(2S) production. Finally, results on $ψ$(2S) production in Pb-Pb collisions will be shown in two transverse momentum ranges as a function of centrality.
description: 7 pages, 12 figures, 7th International Conference on Physics and Astrophysics of Quark Gluon Plasma, Kolkata, India, 1-5 February, 2015
Charmonium production in Pb-Pb collisions at $\sqrt{s_{\rm NN}} =$ 2.76 and 5.02 TeV with ALICE
Creators: name: Paul, Biswarup
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The production of charmonium states, J/$ψ$ and $ψ$(2S), in heavy-ion collisions, is an important probe to investigate the formation of a plasma of quarks and gluons (QGP). In a hot and deconfined medium, quarkonium production is, indeed, expected to be significantly modified, with respect to the pp yields, due to a balance of color screening and charm-quark recombination mechanisms. The ALICE Collaboration at the LHC has measured charmonium production in Pb-Pb collisions at $\sqrt{s}_{\rm NN} =$ 2.76 and 5.02 TeV. The nuclear modification factor of inclusive J/$ψ$, evaluated at forward ($-4<η<-2.5$) rapidity, is measured as a function of the centrality of the collision and of the J/$ψ$ kinematic variables as transverse momentum and rapidity. In this article, we report on the new J/$ψ$ results, obtained at forward rapidity, at $\sqrt{s}_{\rm NN} = 5.02$ TeV. These new results are compared to the J/$ψ$ nuclear modification factor obtained at $\sqrt{s}_{\rm NN} =$ 2.76 TeV and to the available theoretical predictions.
description: 4 pages, 4 figures, Strangeness in Quark Matter 2016, UC Berkeley, United States, 27 June-1 July, 2016
Order of convergence of the finite element method for the $p(x)-$Laplacian
Creators: name: Del Pezzo, Leandro M.
name: Martínez, Sandra
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this work, we study the rate of convergence of the finite element method for the $p(x)$Laplacian ($1< p_1\leq p(x)\leq p_2\leq 2$) in two dimensional convex domains.
description: 18 pag, 1 fig
Categorial Independence and Lévy Processes
Creators: name: Gerhold, Malte
name: Lachs, Stephanie
name: Schürmann, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Category Theory (math.CT)
subject: Probability (math.PR)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 18D10, 60G20, 81R50

description: We generalize Franz' independence in tensor categories with inclusions from two morphisms (which represent generalized random variables) to arbitrary ordered families of morphisms. We will see that this only works consistently if the unit object is an initial object, in which case the inclusions can be defined starting from the tensor category alone. The obtained independence for morphisms is called categorial independence. We define categorial Lévy processes on every tensor category with initial unit object and present a construction generalizing the reconstruction of a Lévy process from its convolution semigroup via the Daniell-Kolmogorov theorem. Finally, we discuss examples showing that many known independences from algebra as well as from (noncommutative) probability are special cases of categorial independence.
Vafa-Witten invariants for projective surfaces I: stable case
Creators: name: Tanaka, Yuuji
name: Thomas, Richard P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14N35, 14D20, 14D21, 14J60

description: On a polarised surface, solutions of the Vafa-Witten equations correspond to certain polystable Higgs pairs. When stability and semistability coincide, the moduli space admits a symmetric obstruction theory and a $\mathbb C^*$ action with compact fixed locus. Applying virtual localisation we define invariants constant under deformations. When the vanishing theorem of Vafa-Witten holds, the result is the (signed) Euler characteristic of the moduli space of instantons. In general there are other, rational, contributions. Calculations of these on surfaces with positive canonical bundle recover the first terms of modular forms predicted by Vafa and Witten.
description: Typo fixed. 61 pages
On Horowitz and Shelah's Borel maximal eventually different family
Creators: name: Schrittesser, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03E15, 03E25, 03E05

description: We show there is a closed (in fact effectively closed, i.e., $Π^0_1$) eventually different family (working in ZF or less).
description: 7 pages. Some small errors corrected
Exploring the Cosmological Model in $f(R,T^ϕ)$ Gravity with Observational Constraints
Creators: name: Bhardwaj, Vinod Kumar
name: Garg, Priyanka
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have investigated an isotropic and homogeneous cosmological model of the universe in $f(R, T^ϕ)$ gravity, where $T^ϕ$ is the trace of the energy-momentum tensor and $R$ is the Ricci scalar. We developed and presented exact solutions of field equations of the proposed model by taking the parametrization $q(z) =α+ \frac{βz}{1+z}$, where $α$ and $β$ are arbitrary constants. The best possible values of the model's free parameters are estimated using the latest observational data sets of OHD, BAO, and Pantheon by applying the MCMC statistical technique. Some kinematic properties like density parameter $ρ_ϕ$, pressure $p_ϕ$, and equation of state parameter $ω_ϕ$ are derived. We have also discussed the behavior of the scalar potential $V(ϕ)$ in the $f(R, T^ϕ)$ gravity theory. The behaviors of scalar fields for quintessence and phantom models are explored. Furthermore, we have discussed the behavior of energy conditions and sound speed in $f(R, T^ϕ)$ cosmology.
description: 18 pages, 12 figures
Improved EFX Approximation Guarantees under Ordinal-based Assumptions
Creators: name: Markakis, Evangelos
name: Santorinaios, Christodoulos
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Our work studies the fair allocation of indivisible items to a set of agents, and falls within the scope of establishing improved approximation guarantees. It is well known by now that the classic solution concepts in fair division, such as envy-freeness and proportionality, fail to exist in the presence of indivisible items. Unfortunately, the lack of existence remains unresolved even for some relaxations of envy-freeness, and most notably for the notion of EFX, which has attracted significant attention in the relevant literature. This in turn has motivated the quest for approximation algorithms, resulting in the currently best known $(ϕ-1)$-approximation guarantee by Amanatidis et al (2020), where $ϕ$ equals the golden ratio. So far, it has been notoriously hard to obtain any further advancements beyond this factor. Our main contribution is that we achieve better approximations, for certain special cases, where the agents agree on their perception of some items in terms of their worth. In particular, we first provide an algorithm with a $2/3$-approximation, when the agents agree on what are the top $n$ items (but not necessarily on their exact ranking), with $n$ being the number of agents. To do so, we also study a general framework that can be of independent interest for obtaining further guarantees.
description: 13 pages, 4 figures
Vafa-Witten invariants for projective surfaces II: semistable case
Creators: name: Tanaka, Yuuji
name: Thomas, Richard P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 14N35, 14D20, 14D21, 14J60

description: We propose a definition of Vafa-Witten invariants counting semistable Higgs pairs on a polarised surface. We use virtual localisation applied to Mochizuki/Joyce-Song pairs. For $K_S\le0$ we expect our definition coincides with an alternative definition using weighted Euler characteristics. We prove this for deg $K_S<0$ here, and it is proved for $S$ a K3 surface in \cite{MT}. For K3 surfaces we calculate the invariants in terms of modular forms which generalise and prove conjectures of Vafa and Witten.
description: Error found by Laarakker fixed. To appear in Pure Appl. Math. Quart. (2017), issue in honour of 60th birthday of Simon Donaldson. 37 pages
Compactness of maximal eventually different families
Creators: name: Schrittesser, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We show that there is an effectively closed maximal eventually different family of functions in spaces of the form $\prod_n F(n)$ for $F\colon \mathbb{N} \to \mathbb{N}\cup\{\mathbb{N}\}$ and give an exact criterion for when there exists an effectively compact such family.
description: 9 pages. Some small errors corrected
The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission
Creators: name: Rodrigues, Barbara H. G.
name: Grindlay, Jonathan E.
name: Allen, Branden
name: Hong, Jaesub
name: Barthelmy, Scott
name: Braga, Joao
name: D'Amico, Flavio
name: Rothschild, Richard E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~2.1 keV @ 60 keV and ~2.3 keV @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.
description: accepted for publication in Journal of Instrumentation
On stochastic modified 3d navier-stokes equations with anisotropic viscosity
Creators: name: Bessaih, Hakima
name: Millet, Annie
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Navier-Stokes equations in the whole space R^3 subject to an anisotropic viscosity and a random perturbation of multiplicative type is described. By adding a term of Brinkman-Forchheimer type to the model, existence and uniqueness of global weak solutions in the PDE sense are proved. These are strong solutions in the probability sense. The convective term given in terms of the Brinkman-Forchheirmer provides some extra regularity in the space L^{2$α$+2} (R^3), with $α$ > 1. As a consequence, the nonlinear term has better properties which allows to prove uniqueness. The proof of existence is performed through a control method. A Large Deviations Principle is given and proven at the end of the paper.
"Science in Tales": Analysis of the images of scientist in young people's fictional literature
Creators: name: Pujalte, Alejandro
name: Gangui, Alejandro
name: Aduriz-Bravo, Agustin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Popular Physics (physics.pop-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In the research field on the "images of scientists" that appear in fictional literature, we focus on a set of tales produced by students of secondary school. Our aim is to connect some traits of the stereotypical scientist that appear in those texts with the traits underlying other cultural productions, since those productions may constitute the probable source of the stereotype. Many common representations of the scientist emerge from an image of science that is inadequate from the point of view of science teaching. It correlates to a lack of interest towards science courses. This lack of interest would contribute to stagnation in the number of students pursuing science and technology careers in Ibero-America in general and especially in Argentina.
description: Article in Spanish, PDF document, 26 pages, 3 figures; Published version available at http://ergosum.uaemex.mx/
Charmonium production in p-Pb collisions with ALICE at the LHC
Creators: name: Paul, Biswarup
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The suppression of quarkonium production with respect to pp collisions is one of the most distinctive signatures of the formation of quark-gluon plasma (QGP), a hot nuclear medium created in ultrarelativistic heavy-ion collisions. However, the suppression of heavy quarkonium production with respect to pp collisions can also take place in p-A collisions, where QGP is not expected to be created and only cold nuclear matter (CNM) effects, such as nuclear absorption, parton shadowing and parton energy loss in initial and final states occur. The study of p-A collisions is therefore important to disentangle the effects of QGP from the CNM ones, and to provide essential input to understand the nucleus-nucleus collisions. The ALICE Collaboration at the LHC has studied inclusive J/$ψ$ production, in the dimuon decay channel, at forward rapidity (2.03 $<$ $y_{\rm cms}$ $<$ 3.53) and backward rapidity ($-$4.46 $<$ $y_{\rm cms}$ $<$ $-$2.96) in p-Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV with the Muon Spectrometer. In this contribution, we present the measurement of the nuclear modification factor of inclusive J/$ψ$ as a function of the centrality and we show the comparison of this result with the one at $\sqrt{s_{\rm NN}} = 5.02$ TeV.
description: 4 pages, 2 figures, EPS-HEP 2017, European Physical Society conference on High Energy Physics, Venice, Italy, 5-12 July 2017
Enhanced flow of core-softened fluids through nanotubes
Creators: name: Bordin, J. R.
name: Soares, J. S.
name: Diehl, A.
name: Barbosa, M. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate through non-equilibrium molecular dynamic simulations the flow of core-softened fluids inside nanotubes. Our results reveal a anomalous increase of the overall mass flux for nanotubes with sufficiently smaller radii. This is explained in terms of a transition from a single-file type of flow to the movement of an ordered-like fluid as the nanotube radius increases. The occurrence of a global minimum in the mass flux at this transition reflects the competition between the two characteristics length scales of the core-softened potential. Moreover, by increasing further the radius, another substantial change in the flow behavior, which becomes more evident at low temperatures, leads to a local minimum in the overall mass flux. Microscopically, this second transition results from the formation of a double-layer of flowing particles in the confined nanotube space. These special nano-fluidic features of core-softened particles closely resemble the enhanced flow behavior observed for liquid water inside carbon nanotubes.
description: 4 pages, 5 figures
LIBER Webinar: Measuring the Impacts of Curatorial Actions on Research Data Reuse at ICPSR
Creators: name: Lafia, Sara
Publisher: name: Zenodo
Year: 2020

description: Funding agencies and academic journals have recently shifted policies surrounding research data sharing. This push toward open science is intended to advance discoveries along with the evaluation, replication, and verification of results. While these policies encourage data sharing and suggest archives for data deposit, they do not provide guidance for the curation of data. What are the values and costs associated with sharing research data? And how does curation impact data discovery and reuse? Questions about how to efficiently allocate data archiving resources to meet increased demand for data sharing remain unanswered. This webinar introduces “Measuring and Improving the Efficacy of Curation Activities in Data Archives” or MICA, a three-year National Digital Infrastructures and Initiatives project led by investigators at the University of Michigan School of Information in partnership with the Inter- university Consortium for Political and Social Research (ICPSR). The goal of this project is to understand how curatorial actions impact the use of digital collections. This project is assessing stakeholder needs, priorities, and values for data reuse. It is also experimenting with machine learning methods to extract and classify curation activities from logs as well as discover incomplete data citations from literature. These methods will allow us to associate curation efforts with data reuse patterns and develop curatorial metrics for measuring the impact of curation activities. Early findings from an analysis of data downloads indicate relationships among dataset features, the intensity of curation activities, and data reuse.
Die lettische evangelisch-lutherische Exilkirche und ihr Friedensdienst
Creators: name: Rozîtis, Elmärs Emsts
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 23 (1976): Lutherische Kirche in der Welt, Band 23
A Bcool magnetic snapshot survey of solar-type stars
Creators: name: Marsden, S. C.
name: Petit, P.
name: Jeffers, S. V.
name: Morin, J.
name: Fares, R.
name: Reiners, A.
name: Nascimento, J. D. do
name: Auriere, M.
name: Bouvier, J.
name: Carter, B. D.
name: Catala, C.
name: Dintrans, B.
name: Donati, J. -F.
name: Gastine, T.
name: Jardine, M.
name: Konstantinova-Antova, R.
name: Lanoux, J.
name: Lignieres, F.
name: Morgenthaler, A.
name: Ramirez-Velez, J. C.
name: Theado, S.
name: Van Grootel, V.
name: Collaboration, the Bcool
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stellar magnetic field measurements obtained from spectropolarimetry offer key data for activity and dynamo studies, and we present the results of a major high-resolution spectropolarimetric Bcool project magnetic snapshot survey of 170 solar-type stars from observations with the Telescope Bernard Lyot and the Canada-France-Hawaii Telescope. For each target star a high signal-to-noise circularly polarised Stokes V profile has been obtained using Least-Squares Deconvolution, and used to detect surface magnetic fields and measure the corresponding mean surface longitudinal magnetic field ($B_{l}$). Chromospheric activity indicators were also measured. Surface magnetic fields were detected for 67 stars, with 21 of these stars classified as mature solar-type stars, a result that increases by a factor of four the number of mature solar-type stars on which magnetic fields have been observed. In addition, a magnetic field was detected for 3 out of 18 of the subgiant stars surveyed. For the population of K-dwarfs the mean value of $B_{l}$ ($|B_{l}|_{mean}$) was also found to be higher (5.7 G) than $|B_{l}|_{mean}$ measured for the G-dwarfs (3.2 G) and the F-dwarfs (3.3 G). For the sample as a whole $|B_{l}|_{mean}$ increases with rotation rate and decreases with age, and the upper envelope for $|B_{l}|$ correlates well with the observed chromospheric emission. Stars with a chromospheric S-index greater than about 0.2 show a high magnetic field detection rate and so offer optimal targets for future studies. This survey constitutes the most extensive spectropolarimetric survey of cool stars undertaken to date, and suggests that it is feasible to pursue magnetic mapping of a wide range of moderately active solar-type stars to improve understanding of their surface fields and dynamos.
description: 36 pages, 26 figures, 7 tables, submitted to MNRAS
title: Ein verfuchster Pudel; [1848]
title: Im Schwarzwald tief im Badenland Was da gescheh'n, ist Euch bekannt, Als gen die Throne, gen die Kronen, Und gegen Joch und Kett und Banden Wohl fünf und vierzig Millionen Im wilden Märzsturm aufgestanden ...
titleType: Subtitle
Creators: name: Schalck, Ernst
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Karikatur mit Monogramm: E.Sch
A z ~ 5.7 Lyα Emission Line with an Ultra Broad Red Wing
Creators: name: Yang, Huan
name: Wang, JunXian
name: Zheng, Zhen-Ya
name: Malhotra, Sangeeta
name: Rhoads, James E.
name: Infante, Leopoldo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using Lyα emission line as a tracer of high redshift star forming galaxies, hundreds of Lyα emission line galaxies (LAEs) at z > 5 have been detected. These LAEs are considered to be low mass young galaxies, critical to the reionization of the universe and the metal enrichment of circumgalactic medium (CGM) and intergalactic medium (IGM). It is assumed that outflows in LAEs can help ionizing photons and Lyα photons escape out of galaxies. However we still know little about the outflows in high redshifts LAEs due to observational difficulties, especially at redshift > 5. Models of Lyα radiative transfer predict asymmetric Lyα line profiles with broad red wing in LAEs with outflows. Here we report a z ~ 5.7 Lyα emission line with a broad red wing extending to > 1000 km/s relative to the peak of Lyα line, which has been detected in only a couple of z > 5 LAEs till now. If the broad red wing is ascribed to gas outflow instead of AGN activity, the outflow velocity could be larger than the escape velocity (~ 500 km/s) of typical halo mass of z ~ 5.7 LAEs, being consistent with the picture that outflows in LAEs disperse metals to CGM and IGM.
description: Accepted to ApJ
Framed graphs and the non-local ideal in the knot Floer cube of resolutions
Creators: name: Gilmore, Allison
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M25 (Primary), 57R58 (Secondary)

description: This article addresses the two significant aspects of Ozsváth and Szabó's knot Floer cube of resolutions that differentiate it from Khovanov and Rozansky's HOMFLY-PT chain complex: (1) the use of twisted coefficients and (2) the appearance of a mysterious non-local ideal. Our goal is to facilitate progress on Rasmussen's conjecture that a spectral sequence relates the two knot homologies. We replace the language of twisted coefficients with the more quantum topological language of framings on trivalent graphs. We define a homology theory for framed trivalent graphs with boundary that -- for a particular non-blackboard framing -- specializes to the homology of singular knots underlying the knot Floer cube of resolutions. For blackboard framed graphs, our theory conjecturally recovers the graph homology underlying the HOMFLY-PT chain complex. We explain the appearance of the non-local ideal by expressing it as an ideal quotient of an ideal that appears in both the HOMFLY-PT and knot Floer cubes of resolutions. This result is a corollary of our main theorem, which is that closing a strand in a braid graph corresponds to taking an ideal quotient of its non-local ideal. The proof is a Gröbner basis argument that connects the combinatorics of the non-local ideal to those of Buchberger's Algorithm.
description: 52 pages
On strong $L^2$ convergence of time numerical schemes for the stochastic 2D Navier-Stokes equations
Creators: name: Bessaih, Hakima
name: Millet, Annie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 60H15, 60H35, Secondary 76D06, 76M35

description: We prove that some discretization schemes for the 2D Navier-Stokes equations subject to a random perturbation converge in $L^2(Ω)$. This refines previous results which only established the convergence in probability of these numerical approximations. Using exponential moment estimates of the solution of the stochastic NS equations and convergence of a localized scheme, we can prove strong convergence of fully implicit and semi-implicit time Euler discretizations, and of a splitting scheme. The speed of the $L^2(Ω)$-convergence depends on the diffusion coefficient and on the viscosity parameter.
Wie kann das Evangelium in einer säkularisierten und religionslosen Welt verkündigt werden?
Creators: name: LeBlanc, René
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 23 (1976): Lutherische Kirche in der Welt, Band 23
The Deep Blue Color of HD189733b: Albedo Measurements with Hubble Space Telescope/Space Telescope Imaging Spectrograph at Visible Wavelengths
Creators: name: Evans, Thomas M.
name: Pont, Frédéric
name: Sing, David K.
name: Aigrain, Suzanne
name: Barstow, Joanna K.
name: Désert, Jean-Michel
name: Gibson, Neale
name: Heng, Kevin
name: Knutson, Heather A.
name: Etangs, Alain Lecavelier des
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a secondary eclipse observation for the hot Jupiter HD189733b across the wavelength range 290-570nm made using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. We measure geometric albedos of Ag = 0.40 \pm 0.12 across 290-450nm and Ag < 0.12 across 450-570nm at 1-sigma confidence. The albedo decrease toward longer wavelengths is also apparent when using six wavelength bins over the same wavelength range. This can be interpreted as evidence for optically thick reflective clouds on the dayside hemisphere with sodium absorption suppressing the scattered light signal beyond ~450nm. Our best-fit albedo values imply that HD189733b would appear a deep blue color at visible wavelengths.
description: 6 pages, 4 figures, 1 table
Incremental Embedding: A Density Matrix Embedding Scheme for Molecules
Creators: name: Ye, Hong-Zhou
name: Welborn, Matthew
name: Ricke, Nathan D.
name: Van Voorhis, Troy
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The idea of using fragment embedding to circumvent the high computational scaling of accurate electronic structure methods while retaining high accuracy has been a long-standing goal for quantum chemists. Traditional fragment embedding methods mainly focus on systems composed of weakly correlated parts and are insufficient when division across chemical bonds is unavoidable. Recently, density matrix embedding theory (DMET) and other methods based on the Schmidt decomposition have emerged as a fresh approach to this problem. Despite their success on model systems, these methods can prove difficult for realistic systems because they rely on either a rigid, non-overlapping partition of the system or a specification of some special sites (i.e. `edge' and `center' sites), neither of which is well-defined in general for real molecules. In this work, we present a new Schmidt decomposition-based embedding scheme called Incremental Embedding that allows the combination of arbitrary overlapping fragments without the knowledge of edge sites. This method forms a convergent hierarchy in the sense that higher accuracy can be obtained by using fragments involving more sites. The computational scaling for the first few levels is lower than that of most correlated wave function methods. We present results for several small molecules in atom-centered Gaussian basis sets and demonstrate that Incremental Embedding converges quickly with fragment size and recovers most static correlation in small basis sets even when truncated at the second lowest level.
description: 13 pages, 6 figures
Momentum broadening of partons on the light cone from the lattice
Creators: name: Panero, Marco
name: Rummukainen, Kari
name: Schäfer, Andreas
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The jet quenching parameter describes the momentum broadening of a high-energy parton moving through the quark-gluon plasma. Following an approach originally proposed by Caron-Huot, we discuss how one can extract information on the collision kernel associated with the parton momentum broadening, from the analysis of certain gauge-invariant operators in dimensionally reduced effective theories, and present numerical results from a lattice study.
description: 7 pages, 3 pdf figures, talk presented at the 31st International Symposium on Lattice Field Theory "Lattice 2013" (29 July - 3 August 2013, Mainz, Germany)
Truncation of Unitary Operads
Creators: name: Bao, Yan-Hong
name: Ye, Yu
name: Zhang, James J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 18D50, 55P48, 16W50, 16P90

description: We introduce truncation ideals of a $\Bbbk$-linear unitary symmetric operad and use them to study ideal structure, growth property and to classify operads of low Gelfand-Kirillov dimension.
Cone spherical metrics and stable vector bundles
Creators: name: Li, Lingguang
name: Song, Jijian
name: Xu, Bin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: primary 51M10, secondary 14H60

description: Cone spherical metrics are conformal metrics with constant curvature one and finitely many conical singularities on compact Riemann surfaces. A cone spherical metric is called irreducible if each developing map of the metric does not have monodromy lying in ${\rm U(1)}$. We establish on compact Riemann surfaces of positive genera a correspondence between irreducible cone spherical metrics with cone angles being integral multiples of $2π$ and line subbundles of rank two stable vector bundles. Then we are motivated by it to prove a theorem of Lange-type that there always exists a stable extension of $L^*$ by $L$, for $L$ being a line bundle of negative degree on each compact Riemann surface of genus greater than one. At last, as an application of these two results, we obtain a new class of irreducible spherical metrics with cone angles being integral multiples of $2π$ on each compact Riemann surface of genus greater than one
description: 22 pages, Submitted
Task adapted reconstruction for inverse problems
Creators: name: Adler, Jonas
name: Lunz, Sebastian
name: Verdier, Olivier
name: Schönlieb, Carola-Bibiane
name: Öktem, Ozan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Functional Analysis (math.FA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The paper considers the problem of performing a task defined on a model parameter that is only observed indirectly through noisy data in an ill-posed inverse problem. A key aspect is to formalize the steps of reconstruction and task as appropriate estimators (non-randomized decision rules) in statistical estimation problems. The implementation makes use of (deep) neural networks to provide a differentiable parametrization of the family of estimators for both steps. These networks are combined and jointly trained against suitable supervised training data in order to minimize a joint differentiable loss function, resulting in an end-to-end task adapted reconstruction method. The suggested framework is generic, yet adaptable, with a plug-and-play structure for adjusting both the inverse problem and the task at hand. More precisely, the data model (forward operator and statistical model of the noise) associated with the inverse problem is exchangeable, e.g., by using neural network architecture given by a learned iterative method. Furthermore, any task that is encodable as a trainable neural network can be used. The approach is demonstrated on joint tomographic image reconstruction, classification and joint tomographic image reconstruction segmentation.
Denoising spectroscopic data by means of the improved Least-Squares Deconvolution method
Creators: name: Tkachenko, A.
name: Van Reeth, T.
name: Tsymbal, V.
name: Aerts, C.
name: Kochukhov, O.
name: Debosscher, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The MOST, CoRoT, and Kepler space missions led to the discovery of a large number of intriguing, and in some cases unique, objects among which are pulsating stars, stars hosting exoplanets, binaries, etc. Although the space missions deliver photometric data of unprecedented quality, these data are lacking any spectral information and we are still in need of ground-based spectroscopic and/or multicolour photometric follow-up observations for a solid interpretation. Both faintness of most of the observed stars and the required high S/N of spectroscopic data imply the need of using large telescopes, access to which is limited. In this paper, we look for an alternative, and aim for the development of a technique allowing to denoise the originally low S/N spectroscopic data, making observations of faint targets with small telescopes possible and effective. We present a generalization of the original Least-Squares Deconvolution (LSD) method by implementing a multicomponent average profile and a line strengths correction algorithm. The method was successfully tested on the high resolution spectra of Vega and a Kepler star, KIC04749989. Application to the two pulsating stars, 20 Cvn and HD189631, showed that the technique is also applicable to intrinsically variable stars: the results of frequency analysis and mode identification from the LSD model spectra for both objects are in good agreement with the findings from literature. Depending on S/N of the original data and spectral characteristics of a star, the gain in S/N in the LSD model spectrum typically ranges from 5 to 15 times. The restored LSD model spectra contain all the information on line profile variations present in the original spectra. The method is applicable to both high- (>30 000) and low- (<30 000) resolution spectra, though the information that can be extracted from the latter is limited by the resolving power itself.
description: 15 pages, 12 figures, 5 tables; accepted for publication in A&A
Constraining Dark Matter-Baryon Scattering with Linear Cosmology
Creators: name: Dvorkin, Cora
name: Blum, Kfir
name: Kamionkowski, Marc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive constraints on elastic scattering between baryons and dark matter using the cosmic microwave background (CMB) data from the Planck satellite and the Lyman-alpha forest data from the Sloan Digital Sky Survey. Elastic scattering allows baryons and dark matter to exchange momentum, affecting the dynamics of linear density perturbations in the early Universe. We derive constraints to scattering cross sections of the form sigma \propto v^n, allowing for a wide range of velocity dependencies with n between -4 and 2. We improve and correct previous estimates where they exist, including velocity-independent cross section as well as dark matter millicharge and electromagnetic dipole moments. Lyman-alpha forest data dominates the constraints for n>-3, where the improvement over CMB data alone can be several orders of magnitude. Dark matter-baryon scattering cannot affect the halo mass function on mass scales M>10^{12} M_{solar}. Our results imply, model-independently, that a baryon in the halo of a galaxy like our own Milky Way, does not scatter from dark matter particles during the age of the galaxy.
description: 15 pages, 5 figures
Probing top-quark couplings indirectly at Higgs factories
Creators: name: Durieux, Gauthier
name: Gu, Jiayin
name: Vryonidou, Eleni
name: Zhang, Cen
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We perform a global effective-field-theory analysis to assess the combined precision on Higgs couplings, triple gauge-boson couplings, and top-quark couplings, at future circular $e^+e^-$ colliders, with a focus on runs below the $t\bar t$ production threshold. Deviations in the top-quark sector entering as one-loop corrections are consistently taken into account in Higgs and diboson processes. We find that future lepton colliders running at center-of-mass energies below the $t\bar t$ production threshold can still provide useful information on top-quark couplings, by measuring virtual top-quark effects. With rate and differential measurements, the indirect individual sensitivity achievable is better than at the high-luminosity LHC. However, strong correlations between the extracted top-quark and Higgs couplings are also present and lead to much weaker global constraints on top-quark couplings. This implies that a direct probe of top-quark couplings above the $t\bar t$ production threshold is helpful also for the determination of Higgs and triple-gauge-boson couplings. In addition, we find that below the $e^+e^-\to t\bar th$ production threshold, the top-quark Yukawa coupling can be determined by its loop corrections to all Higgs production and decay channels. Degeneracy with the $ggh$ coupling can be resolved, and even a global limit is competitive with the prospects of a linear collider above the threshold. This provides an additional means of determining the top-quark Yukawa coupling indirectly at lepton colliders.
description: 14 pages, 6 figures, v2: minor changes, matches the published version
Accelerated finite elements schemes for parabolic stochastic partial differential equations
Creators: name: Gyöngy, István
name: Millet, Annie
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary: 60H15, 65M60 Secondary: 65M15, 65B05

description: For a class of finite elements approximations for linear stochastic parabolic PDEs it is proved that one can accelerate the rate of convergence by Richardson extrapolation. More precisely, by taking appropriate mixtures of finite elements approximations one can accelerate the convergence to any given speed provided the coefficients, the initial and free data are sufficiently smooth.
description: 1 figure
Equivariant bifurcation in geometric variational problems
Creators: name: Bettiol, Renato G.
name: Piccione, Paolo
name: Siciliano, Gaetano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58E07, 58E09, 46T05, 58D19, 53A10

description: We prove an extension of a celebrated equivariant bifurcation result of J. Smoller and A. Wasserman, in an abstract framework for geometric variational problems. With this purpose, we prove a slice theorem for continuous affine actions of a (finite-dimensional) Lie group on Banach manifolds. As an application, we discuss equivariant bifurcation of constant mean curvature hypersurfaces, providing a few concrete examples and counter-examples.
description: LaTeX2e, 27 pages, 2 figures. To appear in Proceedings of the 9th WNLDE (Birkhauser)
On orientations for gauge-theoretic moduli spaces
Creators: name: Joyce, Dominic
name: Tanaka, Yuuji
name: Upmeier, Markus
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: Let $X$ be a compact manifold, $D$ a real elliptic operator on $X$, $G$ a Lie group, $P\to X$ a principal $G$-bundle, and ${\mathcal B}_P$ the infinite-dimensional moduli space of all connections $\nabla_P$ on $P$ modulo gauge, as a topological stack. For each $[\nabla_P]\in{\mathcal B}_P$, we can consider the twisted elliptic operator $D^{\nabla_{Ad(P)}}$ on X. This is a continuous family of elliptic operators over the base ${\mathcal B}_P$, and so has an orientation bundle $O^D_P\to{\mathcal B}_P$, a principal ${\mathbb Z}_2$-bundle parametrizing orientations of Ker$D^{\nabla_{Ad(P)}}\oplus$Coker$D^{\nabla_{Ad(P)}}$ at each $[\nabla_P]$. An orientation on $({\mathcal B}_P,D)$ is a trivialization $O^D_P\cong{\mathcal B}_P\times{\mathbb Z}_2$. In gauge theory one studies moduli spaces $\mathcal M$ of connections $\nabla_P$ on $P$ satisfying some curvature condition, such as anti-self-dual instantons on Riemannian 4-manifolds $(X, g)$. Under good conditions $\mathcal M$ is a smooth manifold, and orientations on $({\mathcal B}_P,D)$ pull back to orientations on $\mathcal M$ in the usual sense under the inclusion ${\mathcal M}\hookrightarrow{\mathcal B}_P$. This is important in areas such as Donaldson theory, where one needs an orientation on $\mathcal M$ to define enumerative invariants. We explain a package of techniques, some known and some new, for proving orientability and constructing canonical orientations on $({\mathcal B}_P,D)$, after fixing some algebro-topological information on $X$. We use these to construct canonical orientations on gauge theory moduli spaces, including new results for moduli spaces of flat connections on 2- and 3-manifolds, instantons, Kapustin-Witten and Vafa-Witten equations on 4-manifolds, and the Haydys-Witten equations on 5-manifolds. Two sequels arXiv:1811.02405, arXiv:1811.09658 discuss orientations in 7 and 8 dimensions.
description: 60 pages. (v2) sections 2.3-2.5 rewritten
Noncommutative corrections to the minimal surface areas of the pure AdS spacetime and Schwarzschild-AdS black hole
Creators: name: Liu, Zhang-Cheng
name: Miao, Yan-Gang
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Based on the perturbation expansion, we compute the noncommutative corrections to the minimal surface areas of the pure AdS spacetime and Schwarzschild-AdS black hole, where the noncommutative background is suitably constructed in terms of the Poincaré coordinate system. In particular, we find a reasonable tetrad with subtlety, which not only matches the metrics of the pure AdS spacetime and Schwarzschild-AdS black hole in the commutative case, but also makes the corrections real rather than complex in the noncommutative case. For the pure AdS spacetime, the nocommutative effect is only a logarithmic term, while for the Schwarzschild-AdS black hole, it contains a logarithmic contribution plus both a mass term and a noncommutative parameter related term. Furthermore, we show that the holographic entanglement entropy with noncommutativity obeys a relation which is similar to the first law of thermodynamics in the pure AdS spacetime.
description: v1: 10 pages, no figures; v2: 11 pages, minor clarifications and references added; v3: minor revisons and references added; v4: major revisions made and references added, final version to appear in Universe