cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Computation of the Chiral Anomaly in the Bulk Quantization
Creators: name: Klose, Thomas
name: Marculescu, Sorin
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The bulk quantization method is used for regularizing a conventional four dimensional theory of massless fermions coupled to an external non-Abelian gauge field and for subsequently evaluating the associated Ward identity. As a result one obtains the well-known chiral anomaly.
description: 19 pages
Faddeev-Jackiw Quantization of Christ-Lee Model
Creators: name: S, Anjali
name: Gupta, Saurabh
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the constraints of Christ-Lee model by the means of modified Faddeev-Jackiw formalism in Cartesian as well as polar coordinates. Further, we accomplish quantization à la Faddeev-Jackiw by choosing appropriate gauge conditions in both the coordinate systems. Finally, we establish gauge symmetries of Christ-Lee model with the help of zero modes of the symplectic matrix.
description: LaTeX file, 14 pages, no figures, typos fixed, text expanded, references added, revised version to appear in Modern Physics Letters A
MOESM4 of Using imperfect data in predictive mapping of vectors: a regional example of Ixodes ricinus distribution
Creators: name: Ribeiro, Rita
name: Eze, Jude
name: Gilbert, Lucy
name: G. Wint
name: Gunn, George
name: Macrae, Alastair
name: Jolyon Medlock
name: Auty, Harriet
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 4: Table S1. Posterior mean, standard deviation, 2.5% and 97.5% quartiles for the binomial models of tick presenceâ€“absence with the data from public submissions (Dataset 2), first model selected based on the Bayesian criteria; secondly using covariates from model 3 to predicted Dataset 2 distribution. None of these two models were selected for the predictions of Dataset 2.
Methods for Preparing Quantum Gases of Lithium
Creators: name: Hulet, Randall G.
name: Nguyen, Jason H. V.
name: Senaratne, Ruwan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Lithium is an important element in atomic quantum gas experiments because its interactions are highly tunable, due to broad Feshbach resonances and zero-crossings, and because it has two stable isotopes, $^6$Li, a fermion, and $^7$Li, a boson. Although lithium has special value for these reasons, it also presents experimental challenges. In this article, we review some of the methods that have been developed or adapted to confront these challenges, including beam and vapor sources, Zeeman slowers, sub-Doppler laser cooling, laser sources at 671 nm, and all-optical methods for trapping and cooling. Additionally, we provide spectral diagrams of both $^6$Li and $^7$Li, and present plots of Feshbach resonances for both isotopes.
description: 30 pages, 8 figures
Extended Bloch group and the Chern-Simons class (Incomplete working version)
Creators: name: Neumann, Walter D
Publisher: name: arXiv
Year: 2002
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We define an extended Bloch group and show it is isomorphic to $H_3(PSL(2,C)^δ;Z)$. Using the Rogers dilogarithm function this leads to an exact simplicial formula for the universal Cheeger-Simons class on this homology group. It also leads to an independent proof of the analytic relationship between volume and Chern-Simons invariant of hyperbolic manifolds conjectured in \cite{neumann-zagier} and proved in \cite{yoshida}, as well as an effective formula for the Chern-Simons invariant of a hyperbolic manifold.
description: This incomplete preprint is identical to the version that has been on my web site since 1998. Since it has been quoted in the permanent literature, as well as in arXiv preprints by Baseilhac and Benedetti, it is being placed here for archival purposes
Stereus Wollaston 1857
Creators: name: Peck, Stewart B.
name: Cook, Joyce
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Stereus

description: Genus Stereus Wollaston, 1857
 Stereus Wollaston, 1857: 148. Type species: Stereus cercyonides Wollaston, 1857, by monotypy. Revised by Daffner (1983), Perkovsky (1991).
 Deltocnemis J. Sahlberg, 1886: 87. Type species: Deltocnemis humatus J. Sahlberg, 1886, by monotypy. As genus, Daffner (1983); as subgenus of Stereus, Perkovsky (1991).
 Pseudotriarthron Normand, 1938: 346. Type species: Pseudotriarthron numidicum Normand, 1938, by monotypy. Synonymized by Daffner (1983).
 Diagnosis. Antennal club large, 3-segmented; mandibles elongate, strongly protruding, apices entire; labrum emarginate; epistomal suture not carinate, strongly marked laterally, faintly indicated medially; clypeus lightly sclerotized; eyes not protuberant; post-ocular tempora not developed; gular sutures widely separated at base, convergent to base of submentum, narrowly separated apically, with a suture separating gula and submentum; mesoventrite weakly oblique, not carinate; mesocoxae narrowly separated by mesoventral process; tarsi very slender.
 Distribution and diversity. The genus is known to contain four Palearctic species (Daffner 1983, Newton 1998), and the following new species from the Nearctic.
description: Published as part of Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, pp. 1-74 in Zootaxa 2102 (1) on pages 25-26, DOI: 10.11646/zootaxa.2102.1.1, http://zenodo.org/record/5310884
The impact of shared sanitation facilities on diarrheal diseases with and without an environmental reservoir: a modeling study
Creators: name: Just, Matthew R.
name: Carden, Stephen W.
name: Li, Sheng
name: K. Baker, Kelly
name: Gambhir, Manoj
name: Chun-Hai Fung, Isaac
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Epidemiological studies have identified an increased risk of diarrheal diseases associated with using shared sanitation facilities. We hypothesized that this might be related to differences in transmission routes of pathogens. We proposed a mathematical model of two fictitious pathogens, one transmitted with an environmental reservoir and one without. We assumed that individuals susceptible to one pathogen are not susceptible to the other, and therefore, decoupled the two models. We initialized the model with 99% individuals being susceptible. We sampled the parameter space using Latin Hypercube Sampling. We simulated 10,000 parameter sets. We varied the effective shared sanitation coverage (the product of latrine coverage and users’ compliance). Our results show that, in our hypothetical scenario, across all levels of effective coverage of shared sanitation, the median final cumulative incidence of diarrheal disease was higher than that of zero coverage. Our simulation findings suggest that increasing effective coverage of shared sanitation may have limited benefits against diarrhea-causing pathogens with an environmental reservoir and may lack benefit against diarrhea-causing pathogens without an environmental reservoir given increased human contacts if latrines are poorly maintained.
The Interrelationship Between Agricultural and Competition Law
Creators: name: Avsec, Franci
name: Jakus, Anita
name: Jerina, Bojana
name: Petelin, Manca
name: Podmiljsak, Matjaz
name: Stepec, Bogdan
name: Zerjav, Primoz
name: Avsec, Franci
name: Jakus, Anita
name: Jerina, Bojana
name: Petelin, Manca
name: Podmiljsak, Matjaz
name: Stepec, Bogdan
name: Zerjav, Primoz
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural and Food Policy

description: In the last two decades, the common agricultural policy (CAP) has been moving its main area from direct market interventions to direct payments. As these changes have disclosed highly asymmetrical bargaining power of different stakeholders in the agrifood chain, the proposed legal acts aknowledge greater importance to producers' organisations. However, agreements, decisions and concerted practices of undertakings and their associations are subject also to the competition law. The paper analyses the recent developments of competition law in EU with regard to the agricultural producers' organisations. As competition aspects will play a greater role in the future CAP, more conflicts between the general (agricultural) policy support to producers' organisations and individual provisions of competition law provisions may be expected.
Sogda Lopatin 1961
Creators: name: Peck, Stewart B.
name: Cook, Joyce
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Sogda

description: Genus Sogda Lopatin, 1961
 Sogda Lopatin, 1961: 121. Type species: Sogda pavlovskii Lopatin, 1961, by original designation.
 Trichohydnobius Vogt, 1961: 154 (as subgenus of Hydnobius). Type species: Hydnobius perrisii Fairmaire, 1855 (= S. suturalis (Zetterstedt, 1828)), by original designation. As genus, Daffner (1983); synonymized by Perkovsky (1988).
 Diagnosis. Antennal club interrupted 5-segmented; mandibles moderately elongate, apices entire; labrum deeply emarginate; clypeus weakly concave; epistomal suture clearly indicated, complete; eye protuberant; post-ocular temporum short; gular sutures widely separated at base, convergent in basal one-half, moderately to narrowly separated at base of submentum, with a suture separating gula and submentum; mesoventrite weakly oblique, not carinate; mesocoxae separated by mesoventral and metaventral processes; elytral epipleura with dense whitish setae.
 Distribution and diversity. The genus is known to contain four Palearctic species (Daffner 1983, Newton 1998), and the following new records for the genus reported for the first time from the Nearctic.
description: Published as part of Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, pp. 1-74 in Zootaxa 2102 (1) on page 27, DOI: 10.11646/zootaxa.2102.1.1, http://zenodo.org/record/5310884
Full two-loop QCD corrections to the Higgs mass in the MSSM with heavy superpartners
Creators: name: Bagnaschi, Emanuele
name: Degrassi, Giuseppe
name: Paßehr, Sebastian
name: Slavich, Pietro
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We improve the determination of the Higgs-boson mass in the MSSM with heavy superpartners, by computing the two-loop threshold corrections to the quartic Higgs coupling that involve both the strong and the electroweak gauge couplings. Combined with earlier results, this completes the calculation of the two-loop QCD corrections to the quartic coupling at the SUSY scale. We also compare different computations of the relation between the quartic coupling and the pole mass of the Higgs boson at the EW scale. We find that the numerical impact of the new corrections on the prediction for the Higgs mass is modest, but comparable to the accuracy of the Higgs-mass measurement at the LHC.
description: 28 pages, 3 pdf figures; v2: reference added, minor textual changes, version published in EPJC
Theoretical analysis of quantum random walks with stress-engineered optics
Creators: name: Liang, Kevin
name: Ariyawansa, Ashan
name: Brown, Thomas G.
name: Magaña-Loaiza, Omar S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum random walks (QRWs) are random processes in which the resulting probability density of the "walker" state, whose movement is governed by a "coin" state, is described in a non-classical manner. Previously, Q-plates have been used to demonstrate QRWs with polarization and orbital angular momentum playing the role of coin and walker states, respectively. In this theoretical analysis, we show how stress-engineered optics can be used to develop new platforms for complex QRWs through relative simple optical elements. Our work opens up new paths to speed up classical-to-quantum transitions in robust photonic networks.
Sogda Lopatin 1961
Creators: name: Peck, Stewart B.
name: Cook, Joyce
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Sogda

description: Key to North American species of Sogda   1 Male metafemur serrulate on posterior margin, lacking a distinct tooth (Fig. 71); male metatibia elongate, curved, widened at apex (Fig. 71); male protibial spur unmodified; unicolorous throughout.................................... S. obtusa
 - Male metafemur with a distinct tooth on posterior margin as well as serrations (Fig. 77); male metatibia angulate at about basal one-fourth of inner margin, narrow at base, widened in apical three-fourths (Fig. 77); male protibial spur elongate, sinuate (Fig. 76); elytra distinctly paler than pronotum................................................................. S. enigma
description: Published as part of Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, pp. 1-74 in Zootaxa 2102 (1) on page 28, DOI: 10.11646/zootaxa.2102.1.1, http://zenodo.org/record/5310884
Advances in network visualisation with an application to serious games
Creators: name: Zheng, Jonathan Xiang-Sheng
Publisher: name: Imperial College London
Year: 2020

description: This thesis concerns the visualisation of networks, through an in-depth study into the node-link diagram representation. Three subtopics are explored within this space. The first is the problem of node layout, where the optimisation of a popular energy function, known as stress, is improved through an algorithm known as stochastic gradient descent. The second is the method of edge bundling, where the idea of hierarchical edge bundling is explored in the absence of a known ground truth hierarchy. Its similarity to a topologically lossless bundling method known as power-confluent drawing is then leveraged, in order to improve technical problems with the underlying algorithms. The final topic is an engineering application in the form of a serious game called EcoBuilder, which utilises the node-link diagram to visualise the dynamical behaviour of food webs. Its purpose is to crowdsource research through a citizen science approach, with outcomes in both visualisation and mathematical ecology.
Optimal Control for a Dispersing Biological Agent
Creators: name: Chalak, Morteza
name: Chalak, Morteza
Publisher: name: Unknown
Year: 2014
Subjects: subject: Environmental Economics and Policy
subject: Production Economics
subject: biological control
subject: economics
subject: externality
subject: optimization
subject: spillover
subject: weed

description: A bioeconomic model is developed to analyze the optimal control management strategies for an introduced herbivore in a two-compartment ecosystem. This paper analyzes cost-effective control strategies that decrease the spillover effects of the herbivore on endangered plant species, thereby reducing extinction pressure and increasing benefits. The optimal level of control is presented in different circumstances. The level of optimal control is high if the herbivore has a relatively low attack rate on the target species, the nontarget host has a high biodiversity value, or the costs of controlling the herbivore are low.
Bayesian latent feature modelling for unstructured data
Creators: name: Zhang, Xinyu
Publisher: name: Imperial College London
Year: 2020

description: Bayesian latent mixture modelling can be applied to a wide range of applications such as natural language processing, image classification, social network analysis and bioinformatics. The idea is to infer the structural relationships in data through unobserved features, which provide a low-dimensional representation of data for different tasks. Posterior inference is computationally expensive since the number of hidden parameters increases with the size of the data set. Also, model parameters are not identifiable because likelihood functions have many genuine modes besides label-switching of mixture components. To solve these problems, a complete framework for learning latent relational structures in data is developed in this thesis. We fully utilise the bag-of-words assumption and generate Poisson counting variables associated with each feature directly. As a result, the sampling complexity of Markov chain Monte Carlo estimation methods is significantly reduced. Several extensions of the framework are further proposed to accommodate different assumptions about data including sparsity, time dynamics and correlation. Our approach is straightforward and flexible, and is empirically proven to be superior to most of the existing topic models.
Universal Extra Dimensions and the Muon Magnetic Moment
Creators: name: Appelquist, Thomas
name: Dobrescu, Bogdan A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the muon anomalous magnetic moment in the context of universal extra dimensions. Our computation shows that the bound from electroweak data on the size of these dimensions allows only a small shift in the muon magnetic moment given by Kaluza-Klein modes of standard model fields. In the well-motivated case of two universal extra dimensions, additional contributions arising from physics at scales where the effective 6-dimensional standard model breaks down, given by dimension-ten operators, have a natural size comparable to the sensitivity of the muon (g-2) experiment at BNL.
description: 13 pages, Latex
Multipartite Entanglement Measure and Complete Monogamy Relation
Creators: name: Guo, Yu
name: Zhang, Lin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Although many different entanglement measures have been proposed so far, much less is known in the multipartite case, which leads to the previous monogamy relations in literatures are not complete. We establish here a strict framework for defining multipartite entanglement measure (MEM): apart from the postulates of bipartite measure, a genuine MEM should additionally satisfy the unification condition and the hierarchy condition. We then come up with a complete monogamy formula for the unified MEM and a tightly complete monogamy relation for the genuine MEM. Consequently, we propose MEMs which are multipartite extensions of entanglement of formation (EoF), concurrence, tangle, Tsallis $q$-entropy of entanglement, Rényi $α$-entropy of entanglement, the convex-roof extension of negativity and negativity, respectively. We show that (i) the extensions of EoF, concurrence, tangle, and Tsallis $q$-entropy of entanglement are genuine MEMs, (ii) multipartite extensions of Rényi $α$-entropy of entanglement, negativity and the convex-roof extension of negativity are unified MEMs but not genuine MEMs, and (iii) all these multipartite extensions are completely monogamous and the ones which are defined by the convex-roof structure (except for the Rényi $α$-entropy of entanglement and the convex-roof extension of negativity) are not only completely monogamous but also tightly completely monogamous. In addition, we find a class of tripartite states that one part can maximally entangled with other two parts simultaneously according to the definition of maximally entangled mixed state (MEMS) in [Quantum Inf. Comput. 12, 0063 (2012)]. Consequently, we improve the definition of maximally entangled state (MES) and prove that there is no MEMS and that the only MES is the pure MES.
description: 18 pages, 2 figures
A parametrization of the theta divisor of the quartic double solid
Creators: name: Markushevich, D.
name: Tikhomirov, A. S.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J30

description: Let M(2;0,3) be the moduli space of rank-2 stable vector bundles with Chern classes c_1=0, c_2=3 on the Fano threefold X, the double solid of index two. We prove that the vector bundles obtained by Serre's construction from smooth elliptic quintic curves on X form an open part of an irreducible component M' of M(2;0,3) and that the Abel-Jacobi map F:M'-->J(X) into the intermediate Jacobian J(X) defined by the second Chern class is generically finite of degree 84 onto a translate of the theta divisor. We also prove that the family of elliptic quintics on a general X is irreducible and of dimension 10.
description: 23 pages; final version as published
Interpretation of $Y_b (10750)$ as a tetraquark and its production mechanism
Creators: name: Ali, Ahmed
name: Maiani, Luciano
name: Parkhomenko, Alexander Ya.
name: Wang, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Recently, the Belle Collaboration has updated the analysis of the cross sections for the processes $e^+ e^- \to Υ(nS)\, π^+ π^-$ ($n = 1,\, 2,\, 3$) in the $e^+ e^-$ center-of-mass energy range from 10.52 to 11.02 GeV. A new structure, called here $Y_b (10750)$, with the mass $M (Y_b) = (10752.7 \pm 5.9^{+0.7}_{-1.1})$ MeV and the Breit-Wigner width $Γ(Y_b) = (35.5^{+17.6 +3.9}_{-11.3 -3.3})$ MeV was observed \cite{Abdesselam:2019gth}. We interpret $Y_b (10750)$ as a compact $J^{PC} = 1^{--}$ state with a dominant tetraquark component. The mass eigenstate $Y_b (10750)$ is treated as a linear combination of the diquark-antidiquark and $b \bar b$ components due to the mixing via gluonic exchanges shown recently to arise in the limit of large number of quark colors. The mixing angle between $Y_b$ and $Υ(5S)$ can be estimated from the electronic width, recently determined to be $Γ_{ee} (Y_b) = (13.7 \pm 1.8)$ eV. The mixing provides a plausible mechanism for $Y_b (10750)$ production in high energy collisions from its $b \bar b$ component and we work out the Drell-Yan and prompt production cross sections for $p p \to Y_b (10750) \to Υ(nS)\, π^+ π^-$ at the LHC. The resonant part of the dipion invariant mass spectrum in $Y_b (10750) \to Υ(1S)\, π^+ π^-$ and the corresponding angular distribution of $π^+$-meson in the dipion rest frame are presented as an example.
description: 6 pages, 3 figures; v2: some numerics updated based on new results for $\Gamma_{ee}(Y_b)$, references added; v3: accept by Physics Letters B
Corrigendum to “Adoption and Frequency of Precision Soil Testing in Cotton Production”
Creators: name: Lambert, Dayton M.
name: English, Burton
name: Harper, David
name: Larkin, Sherry L.
name: Laron, James
name: Mooney, Daniel F.
name: Roberts, Roland
name: Velandia, Margarita
name: Reeves, Jeanne
name: Lambert, Dayton M.
name: English, Burton
name: Harper, David
name: Larkin, Sherry L.
name: Laron, James
name: Mooney, Daniel F.
name: Roberts, Roland
name: Velandia, Margarita
name: Reeves, Jeanne
Publisher: name: Unknown
Year: 2014
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: frequency
subject: Poisson-hurdle regression
subject: post-stratification survey weight estimation
subject: precision soil sampling

description: The authors regret that the above paper contained an error in the calculation of the survey expansion weights (Lambert et al., 2014, p. 110). Using the notation of the paper, the expansion factor for the lth stratum was introduced as wl =agbh=ngh, where g indexes states and h indexes farm size class. This is in fact the correct expression if Sinkhorn’s (1964) RAS method were used. However, Ireland and Kullback’s (1968) cross-entropy method was used to estimate the expansion factors, and division of variables a and b by the survey response frequency (ngh) is unnecessary. The typographical error has no bearing on the empirical analysis. References
A Model of Two Dimensional Turbulence Using Random Matrix Theory
Creators: name: Iyer, Savitri V.
name: Rajeev, S. G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive a formula for the entropy of two dimensional incompressible inviscid flow, by determining the volume of the space of vorticity distributions with fixed values for the moments Q_k= \int_w(x)^k d^2 x. This space is approximated by a sequence of spaces of finite volume, by using a regularization of the system that is geometrically natural and connected with the theory of random matrices. In taking the limit we get a simple formula for the entropy of a vortex field. We predict vorticity distributions of maximum entropy with given mean vorticity and enstrophy; also we predict the cylindrically symmetric vortex field with maximum entropy. This could be an approximate description of a hurricane.
description: latex, 12 pages, 2 figures, acknowledgement added
On polarized scattering equations for superamplitudes of 11D supergravity and ambitwistor superstring
Creators: name: Bandos, Igor
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisited the formalism of 11D polarized scattering equation by Geyer and Mason from the perspective of spinor frame approach and spinor moving frame formulation of the 11D ambitwistor superstring action. In particular, we rigorously obtain the equation for the spinor function on Riemann sphere from the supertwistor form of the ambitwistor superstring action, write its general solution and use it to derive the polarized scattering equation. We show that the expression used by Geyer and Mason to motivate their ansatz for the solution of polarized scattering equation can be obtained from our solution after a suitable gauge fixing. To this end we use the hidden gauge symmetries of the 11D ambitwistor superstring, including $SO(16)$, and the description of ambitwistor superstring as a dynamical system in an 11D superspace enlarged by bosonic directions parametrized by 517 tensorial central charge coordinates $Z^{\underlineμ \underlineν}$ and $Z^{\underlineμ\underlineν\underlineρ\underlineσ\underlineκ}$. We have also found the fermionic superpartner of the polarized scattering equation. This happens to be a differential equation in fermionic variables imposed on the superamplitude, rather then just a condition on the scattering data as the bosonic polarized scattering equation is. D=10 case is also discussed stressing the similarities and differences with 11D systems. The useful formulation of 10D ambitwistor superstring considers it as a dynamical system in superspace enlarged with 126 tensorial central charge coordinates $Z^{μνρσκ}$.
description: 1+41 pages, no figures. V2: Misprints corrected. Minor changes
Polycentric water resources assessment and governance in data-scarce regions
Creators: name: Zogheib, Charles
Publisher: name: Imperial College London
Year: 2020

description: Achieving the Sustainable Development Goal (SDG) 6 is a major challenge as ensuring sustainable and universal access to water faces considerable demographic and climatological uncertainties. Limited data on water availability and water use is a key impediment to evidence- based decision making. Emerging hydrological monitoring technologies as well as improved modelling tools offer an opportunity to bridge this gap. However, hydrological evidence is not always perceived as conducive to sustainable water resources management and governance. Instead, it can lead to complex political reactions and increased conflict. I hypothesized that whilst hydrological data are a necessary pre-condition to improved decision-making, shaping such data into actionable evidence requires a combination of effective tools and broader policy considerations to ensure sustainable water resources management and governance. To test this hypothesis, I focused on the tropical Andes, a region facing major water-related challenges, significant anthropogenic pressures, and limited governance capacity. First, I designed a procedure to derive spatially explicit maps of anthropogenic water demand in data-scarce regions, a key element of the water cycle with substantially limited information across the globe. I then coupled this dataset with the physics-based land-surface model JULES to simulate the 2016 drying of Lake Poopó in Bolivia. I found a clear impact of anthropogenic water demand on the evolution of the lake, highlighting the importance of hydrological data to water management. I therefore subsequently examined the underlying assumptions on data availability in various water resources governance arrangements. I studied the Ecuadorian capital Quito to derive criteria to diagnose potential governance deficits when considering an increase in hydrological data availability. Lastly, I identified a paradox between apparently sub-optimal level of monitoring activities and their potentially high economic returns. I attributed this paradox to key limitations in the methods used to value monitoring benefits, which I attempted to address by developing a risk-based framework, illustrated using the case of the Rímac river basin in Lima, Peru. The outcomes of this thesis help overcome potential bottlenecks in data availability to support evidence-based decision making in order to achieve the SDGs.
MOESM2 of Tempol improves neuroinflammation and delays motor dysfunction in a mouse model (SOD1G93A) of ALS
Creators: name: Chiarotto, Gabriela
name: Cartarozzi, Luciana
name: Matheus Perez
name: Biscola, Natalia
name: Spejo, Aline
name: Gubert, Fernanda
name: Marcondes França Junior
name: Mendez-Otero, Rosália
name: Oliveira, Alexandre
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 2: Table S1. Number of motoneurons counted per spinal cord section (with Abercrombie’s correction, mean ± standard error, n = 6 per group).
MOESM5 of Performance and usability of machine learning for screening in systematic reviews: a comparative evaluation of three tools
Creators: name: Gates, Allison
name: Guitard, Samantha
name: Pillay, Jennifer
name: Elliott, Sarah
name: Dyson, Michele
name: Newton, Amanda
name: Hartling, Lisa
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: Additional file 5. Focused codes and supporting quotes for the properties of each tool. Focused codes and supporting quotes for the themes that emerged from the qualitative analysis, for each tool.
Additional file 9: of Aberrantly expressed messengerÂ RNAs and long noncoding RNAs in degenerative nucleus pulposus cells co-cultured with adipose-derived mesenchymal stem cells
Creators: name: Han, Zhihua
name: Wang, Jiandong
name: Gao, Liang
name: Wang, Qiugen
name: Wu, Jianhong
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Top 20 most significantly regulated genes in signal-net. (DOCX 15 kb)
One-Loop QCD Corrections to the Thermal Wilson Line Model
Creators: name: Wirstam, J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the time independent four-point function in high temperature (T) QCD and obtain the leading momentum dependent terms. Furthermore, we relate these derivative interactions to derivative terms in a recently proposed finite T effective action based on the SU(3) Wilson Line and its trace, the Polyakov Loop. By this procedure we thus obtain a perturbative matching at finite T between QCD and the effective model. In particular, we calculate the leading perturbative QCD-correction to the kinetic term for the Polyakov Loop.
description: Minor changes, one reference added
Quadrupolar interactions between acceptor pairs in p-doped semiconductors
Creators: name: Durst, Adam C.
name: Yang-Mejia, Genesis
name: Bhatt, R. N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the interaction between acceptor pairs in doped semiconductors in the limit of large inter-acceptor separation relevant for low doping densities. Modeling individual acceptors via the spherical model of Baldereschi and Lipari, we calculate matrix elements of the quadrupole tensor between the four degenerate ground states and show that the acceptor has a nonzero quadrupole moment. As a result, the dominant contribution to the large-separation acceptor-acceptor interaction comes from direct (charge-density) terms rather than exchange terms. The quadrupole is the leading nonzero moment, so the electric quadrupole-quadrupole interaction dominates for large separation. We calculate the matrix elements of the quadrupole-quadrupole interaction Hamiltonian in a product-state basis and diagonalize, obtaining a closed-form expression for the energies and degeneracies of the sixteen-state energy spectrum. All dependence on material parameters enters via an overall prefactor, resulting in surprisingly simple and universal results. This simplicity is due, in part, to a mathematical happenstance, the nontrivial vanishing of a particular Wigner 6-j symbol. Results are relevant to the control of two-qubit interactions in quantum computing implementations based on acceptor spins, as well as calculations of the thermodynamic properties of insulating p-type semiconductors.
description: 12 pages, 6 figures, as published in PRB
Covariant Effective Action for Quantum Particle with Coordinate-Dependent Mass
Creators: name: Kleinert, H.
name: Chervyakov, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using a covariant background field method we calculate the one-loop quantum effective action for a particle with coordinate-dependent mass moving slowly through a one-dimensional configuration space. The procedure can easily be extended to any desired loop order.
description: Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html . Latest update of paper (including all PS fonts) at http://www.physik.fu-berlin.de/~kleinert/313
Quasiparticle Calculations for Point Defects on Semiconductor Surfaces
Creators: name: Hedstrom, Magnus
name: Schindlmayr, Arno
name: Scheffler, Matthias
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss the implementation of quasiparticle calculations for point defects on semiconductor surfaces and, as a specific example, present an ab initio study of the electronic structure of the As vacancy in the +1 charge state on the GaAs(110) surface. The structural properties are calculated with the plane-wave pseudopotential method, and the quasiparticle energies are obtained from Hedin's GW approximation. Our calculations show that the 1a" vacancy state in the band gap is shifted from 0.06 to 0.65 eV above the valence-band maximum after the self-energy correction to the Kohn-Sham eigenvalues. The GW result is in close agreement with a recent surface photovoltage imaging measurement.
description: 9 pages including 3 figures, LaTeX
Riemann surfaces for KPZ with periodic boundaries
Creators: name: Prolhac, Sylvain
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Riemann surface for polylogarithms of half-integer index, which has the topology of an infinite dimensional hypercube, is studied in relation to one-dimensional KPZ universality in finite volume. Known exact results for fluctuations of the KPZ height with periodic boundaries are expressed in terms of meromorphic functions on this Riemann surface, summed over all the sheets of a covering map to an infinite cylinder. Connections to stationary large deviations, particle-hole excitations and KdV solitons are discussed.
description: 81 pages, 23 figures
Z decay into two massless gauge bosons in a magnetic field
Creators: name: Tinsley, Todd M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An investigation of the processes Z to gluon-gluon and Z to photon-photon in a background magnetic field is presented. For homogeneous fields corrections to the charged fermion propagator can be calculated in leading orders of the magnetic field. This work examines the first order contributions of the corrected propagator to decays that are otherwise zero. Results of the decay rates for varying field strengths are included.
description: 14 pages, 2 figures, needs RevTeX4; typos corrected, appendix added, references added, format changed to preprint mode
More about the axial anomaly on the lattice
Creators: name: Igarashi, Hiroshi
name: Okuyama, Kiyoshi
name: Suzuki, Hiroshi
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the axial anomaly defined on a finite-size lattice by using a Dirac operator which obeys the Ginsparg-Wilson relation. When the gauge group is U(1), we show that the basic structure of axial anomaly on the infinite lattice, which can be deduced by a cohomological analysis, persists even on (sufficiently large) finite-size lattices. For non-abelian gauge groups, we propose a conjecture on a possible form of axial anomaly on the infinite lattice, which holds to all orders in perturbation theory. With this conjecture, we show that a structure of the axial anomaly on finite-size lattices is again basically identical to that on the infinite lattice. Our analysis with the Ginsparg-Wilson Dirac operator indicates that, in appropriate frameworks, the basic structure of axial anomaly is quite robust and it persists even in a system with finite ultraviolet and infrared cutoffs.
description: 12 pages, uses JHEP.cls and amsfonts.sty, the final version to appear in Nucl. Phys. B
Reduced integration schemes in micromorphic computational homogenization of elastomeric mechanical metamaterials
Creators: name: Rokoš, Ondřej
name: Zeman, Jan
name: Doškář, Martin
name: Krysl, Petr
Publisher: name: arXiv
Year: 2019
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Exotic behaviour of mechanical metamaterials often relies on an internal transformation of the underlying microstructure triggered by its local instabilities, rearrangements, and rotations. Depending on the presence and magnitude of such a transformation, effective properties of a metamaterial may change significantly. To capture this phenomenon accurately and efficiently, homogenization schemes are required that reflect microstructural as well as macro-structural instabilities, large deformations, and non-local effects. To this end, a micromorphic computational homogenization scheme has recently been developed, which employs the particular microstructural transformation as a non-local mechanism, magnitude of which is governed by an additional coupled partial differential equation. Upon discretizing the resulting problem it turns out that the macroscopic stiffness matrix requires integration of macro-element basis functions as well as their derivatives, thus calling for a higher-order integration rules. Because evaluation of constitutive law in multiscale schemes involves an expensive solution of a non-linear boundary value problem, computational efficiency can be improved by reducing the number of integration points. Therefore, the goal of this paper is to investigate reduced-order schemes in computational homogenization, with emphasis on the stability of the resulting elements. In particular, arguments for lowering the order of integration from the expensive mass-matrix to a cheaper stiffness-matrix equivalent are first outlined. An efficient one-point integration quadrilateral element is then introduced and proper hourglass stabilization discussed. Performance of the resulting set of elements is finally tested on a benchmark bending example, showing that we achieve accuracy comparable to the full quadrature rules.
description: 21 pages, 8 figures, 3 tables, abstract shortened to fulfill 1920 character limit, small changes after review
Kalohydnobius Peck & Cook 2009, new genus
Creators: name: Peck, Stewart B.
name: Cook, Joyce
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Kalohydnobius

description: Genus Kalohydnobius Peck & Cook, new genus
 Type species: Hydnobius strigilatus Horn, 1880.
 Diagnostic description. Head with microsculpture of fine irregular lines; antennal club interrupted 5- segmented; mandibles stout, a thin plate forming inner apical margins, lacking distinct teeth on inner margins; labrum not emarginate; clypeus strongly sclerotized, convex; epistomal suture clearly indicated; eyes protuberant; post-ocular tempora short; gular sutures widely separated at base, convergent to base of submentum, with a suture separating gula and submentum; pronotum minutely punctate; mesoventrite weakly oblique, not carinate; mesocoxae separated by mesoventral process; parameres with lateral notch near base.
 The following characters of Kalohydnobius separate the genus from Hydnobius: head with microsculpture of fine irregular lines (not present in Hydnobius), apex of right mandible not bidentate (bidentate in Hydnobius), mandibles lack distinct teeth on inner margins (distinct teeth present in Hydnobius), labrum not emarginate (deeply emarginate in Hydnobius), eyes distinctly protuberant (weakly or not protuberant in Hydnobius), pronotum minutely punctate (not minutely punctate in Hydnobius), parameres with lateral notch near base (notch absent in Hydnobius).
 Distribution and diversity. The genus is known to contain only the following Nearctic species. We have not been able to recognize that any existing Palearctic species should be placed in this new genus.
 Etymology. From the Greek kalos, beautiful; refers to the attractive shining cuticle of these beetles; and Hydnobius.
description: Published as part of Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, pp. 1-74 in Zootaxa 2102 (1) on page 31, DOI: 10.11646/zootaxa.2102.1.1, http://zenodo.org/record/5310884
X-Symbols for Non-Abelian Symmetries in Tensor Networks
Creators: name: Weichselbaum, Andreas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The full exploitation of non-abelian symmetries in tensor network states (TNS) derived from a given lattice Hamiltonian is highly attractive in various aspects. From a theoretical perspective, it can offer deep insights into the entanglement structure and quantum information content of strongly correlated quantum many-body states. From a practical perspective, it allows one to push numerical efficiency by orders of magnitude. Physical expectation values based on TNS require the full contraction of a given tensor network, with the elementary ingredient being a pairwise contraction. While well-established for no or just abelian symmetries, this can become quickly extremely involved and cumbersome for general non-abelian symmetries. As shown in this work, however, the latter can be tackled in a transparent and efficient manner by introducing so-called X-symbols which deal with the underlying pairwise contraction of generalized Clebsch-Gordan tensors (CGTs). These X-symbols can be computed deterministically once and for all, and hence also be tabulated. Akin to 6j-symbols, X-symbols are generally much smaller than their constituting CGTs. In applications, they solely affect the tensors of reduced matrix elements, and therefore, once tabulated, allow one to completely sidestep the explicit usage of CGTs, and thus to greatly increase numerical efficiency.
description: 16 pages, 11 figures
Stringent neutron-star limits on large extra dimensions
Creators: name: Hannestad, Steen
name: Raffelt, Georg G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Supernovae (SNe) are copious sources for Kaluza-Klein gravitons which are generic for theories with large extra dimensions. These massive particles are produced with average velocities ~0.5 c so that many of them are gravitationally retained by the SN core. Every neutron star thus has a halo of KK gravitons which decay into nu bar-nu, e^+e^- and gamma gamma on time scales \~10^9 years. The EGRET gamma-flux limits (E_gamma ~ 100 MeV) for nearby neutron stars constrain the fundamental scale for n=2 extra dimensions to M >500 TeV, and M>30 TeV for n=3. The upcoming GLAST satellite is a factor ~30 more sensitive and thus may detect KK decays, for example at the nearby neutron star RX J185635--3754. The requirement that neutron stars are not excessively heated by KK decays implies M>1700 TeV for n=2, and M>60 TeV for n=3.
description: Minor changes, matches version to appear in PRL