cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantization ambiguities and the robustness of effective descriptions of primordial perturbations in hybrid Loop Quantum Cosmology
Creators: name: Navascués, Beatriz Elizaga
name: Marugán, Guillermo A. Mena
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the imprint that certain quantization ambiguities may leave in effective regimes of the hybrid loop quantum description of cosmological perturbations. More specifically, in the case of scalar perturbations we investigate how to reconstruct the Mukhanov-Sasaki field in the effective regime of Loop Quantum Cosmology, taking as starting point for the quantization a canonical formulation in terms of other perturbative gauge invariants that possess different dynamics. This formulation of the quantum theory, in terms of variables other than the Mukhanov-Sasaki ones, is crucial to arrive at a quantum Hamiltonian with a good behavior, elluding the problems with ill defined Hamiltonian operators typical of quantum field theories. In the reconstruction of the Mukhanov-Sasaki field, we ask that the effective Mukhanov-Sasaki equations adopt a similar form and display the same Hamiltonian structure as the classical ones, a property that has been widely assumed in Loop Quantum Cosmology studies over the last decade. This condition actually restricts the freedom inherent to certain quantization ambiguities. Once these ambiguities are removed, the reconstruction of the Mukhanov-Sasaki field naturally identifies a set of positive-frequency solutions to the effective equations, and hence a choice of initial conditions for the perturbations. Our analysis constitutes an important and necessary test of the robustness of standard effective descriptions in Loop Quantum Cosmology, along with their observational predictions on the primordial power spectrum, taking into account that they should be the consequence of a more fundamental quantum theory with a well-defined Hamiltonian, in the spirit of Dirac's long-standing ideas.
description: 13 pages
Rapid granular flows on a rough incline: phase diagram, gas transition, and effects of air drag
Creators: name: Borzsonyi, Tamas
name: Ecke, Robert E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report experiments on the overall phase diagram of granular flows on an incline with emphasis on high inclination angles where the mean layer velocity approaches the terminal velocity of a single particle free falling in air. The granular flow was characterized by measurements of the surface velocity, the average layer height, and the mean density of the layer as functions of the hopper opening, the plane inclination angle and the downstream distance x of the flow. At high inclination angles the flow does not reach an x-invariant steady state over the length of the inclined plane. For low volume flow rates, a transition was detected between dense and very dilute (gas) flow regimes. We show using a vacuum flow channel that air did not qualitatively change the phase diagram and did not quantitatively modify mean flow velocities of the granular layer except for small changes in the very dilute gas-like phase.
description: 10 pages, 16 figures, accepted to Phys. Rev. E
Parallel Minimum Cuts in $O(m \log^2(n))$ Work and Low Depth
Creators: name: Anderson, Daniel
name: Blelloch, Guy E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We present a randomized $O(m \log^2 n)$ work, $O(\text{polylog } n)$ depth parallel algorithm for minimum cut. This algorithm matches the work bounds of a recent sequential algorithm by Gawrychowski, Mozes, and Weimann [ICALP'20], and improves on the previously best parallel algorithm by Geissmann and Gianinazzi [SPAA'18], which performs $O(m \log^4 n)$ work in $O(\text{polylog } n)$ depth. Our algorithm makes use of three components that might be of independent interest. Firstly, we design a parallel data structure that efficiently supports batched mixed queries and updates on trees. It generalizes and improves the work bounds of a previous data structure of Geissmann and Gianinazzi and is work efficient with respect to the best sequential algorithm. Secondly, we design a parallel algorithm for approximate minimum cut that improves on previous results by Karger and Motwani. We use this algorithm to give a work-efficient procedure to produce a tree packing, as in Karger's sequential algorithm for minimum cuts. Lastly, we design an efficient parallel algorithm for solving the minimum $2$-respecting cut problem.
description: This is the full version of the paper appearing in the ACM Symposium on Parallelism in Algorithms and Architectures (SPAA), 2021
title: Mandibular brown tumour
Creators: name: Baptista, Diogo
Publisher: name: EURORAD
Year: 2025
Subjects: subject: Head & neck imaging
subject: Head and neck
subject: Musculoskeletal bone
subject: CT
subject: Ultrasound
subject: Diagnostic procedure
subject: Clinical Case

description: Clinical History: A 53-year-old male patient presented with a lump in his left jaw, with noted enlargement in 2 months. There were no associated symptoms or relevant clinical history. Physical examination disclosed an expansile lesion in the left mandibular region and excluded palpable lymph nodes.

description: 53 years, male
Tri-bimaximal Neutrino Mixing and Quark Masses from a Discrete Flavour Symmetry
Creators: name: Feruglio, Ferruccio
name: Hagedorn, Claudia
name: Lin, Yin
name: Merlo, Luca
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We build a supersymmetric model of quark and lepton masses based on the discrete flavour symmetry group T', the double covering of A_4. In the lepton sector our model is practically indistinguishable from recent models based on A_4 and, in particular, it predicts a nearly tri-bimaximal mixing, in good agreement with present data. In the quark sector a realistic pattern of masses and mixing angles is obtained by exploiting the doublet representations of T', not available in A_4. To this purpose, the flavour symmetry T' should be broken spontaneously along appropriate directions in flavour space. In this paper we fully discuss the related vacuum alignment problem, both at the leading order and by accounting for small effects coming from higher-order corrections. As a result we get the relations: \sqrt{m_d/m_s}\approx |V_{us}| and \sqrt{m_d/m_s}\approx |V_{td}/V_{ts}|.
description: 27 pages, 1 figure; minor corrections
Manifolds of quasi-constant SOAP and ACSF fingerprints and the resulting failure to machine learn four-body interactions
Creators: name: Parsaeifard, Behnam
name: Goedecker, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Atomic fingerprints are commonly used for the characterization of local environments of atoms in machine learning and other contexts. In this work, we study the behavior of two widely used fingerprints, namely the smooth overlap of atomic positions (SOAP) and the atom-centered symmetry functions (ACSF), under finite changes of atomic positions and demonstrate the existence of manifolds of quasi-constant fingerprints. These manifolds are found numerically by following eigenvectors of the sensitivity matrix with quasi-zero eigenvalues. The existence of such manifolds in ACSF and SOAP causes a failure to machine learn four-body interactions such as torsional energies that are part of standard force fields. No such manifolds can be found for the Overlap Matrix (OM) fingerprint due to its intrinsic many-body character.
description: 8 pages, 5 figures
Full counting statistics and conditional evolution in a nanoelectromechanical system
Creators: name: Bennett, S. D.
name: Clerk, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically the full distribution of transferred charge in a tunnel junction (or quantum point contact) coupled to a nanomechanical oscillator, as well as the conditional evolution of the oscillator. Even if the oscillator is very weakly coupled to the tunnel junction, it can strongly affect the tunneling statistics and lead to a highly non-Gaussian distribution. Conversely, given a particular measurement history of the current, the oscillator energy distribution may be localized and highly non-thermal. We also discuss non-Gaussian correlations between the oscillator motion and tunneling electrons; these show that the tunneling back-action cannot be fully described as an effective thermal bath coupled to the oscillator.
description: 7 pages; figure added; typos corrected
Additional file 1 of A novel toothbrush with a thin-head, slender-neck and super-tapered bristles enhancing accessibility in hard-to-reach areas: a crossover randomized trial
Creators: name: Kim, Hyo-Jung
name: Lee, Joo-Yeon
name: Lee, Eun-Song
name: Kim, Da-Mi
name: Jung, Ui-Won
name: Cha, Jae-Kook
name: Kim, Baek-Il
Publisher: name: figshare
Year: 2024
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Mental Health
subject: Hematology

description: Supplementary Material 1
Additional file 1 of Optimization, purification and characterization of laccase from a new endophytic Trichoderma harzianum AUMC14897 isolated from Opuntia ficus-indica and its applications in dye decolorization and wastewater treatment
Creators: name: Salem, Maha M.
name: Mohamed, Tarek M.
name: Shaban, Aya M.
name: Mahmoud, Yehia A.-G.
name: Eid, Mohammed A.
name: El-Zawawy, Nessma A.
Publisher: name: figshare
Year: 2024
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Supplementary material 1.
Pressure-induced structural phase transition and suppression of Jahn-Teller distortion in the quadruple perovskite structure
Creators: name: Bhadram, V. S.
name: Joseph, B.
name: Delmonte, D.
name: Gilioli, E.
name: Baptiste, B.
name: -Godec, Y. Le
name: Lobo, R. P. S. M.
name: Gauzzi, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By means of in situ synchrotron X-ray diffraction and Raman spectroscopy under hydrostatic pressure, we investigate the structural stability of the quadruple perovskite LaMn7O12. At 34 GPa, the data unveil a first-order structural phase transition from monoclinic I2/m to cubic Im-3 symmetry characterized by a pronounced contraction of the unit cell and by a significant modifications in the Raman phonon modes. The phase transition is also marked by the suppression of Jahn-Teller distortion which is present in the ambient monoclinic phase. In addition, above 20 GPa pressure, a sudden and simultaneous broadening is observed in several Raman modes which suggests the onset of a sizable electron-phonon interaction and incipient charge mobility. Considering that LaMn7O12 is paramagnetic insulator at ambient, and Jahn-Teller distortion is frozen in the high-pressure Im-3 phase, we argue that this phase could be a potential candidate to host a purely electronic insulator-metal transition with no participation of the lattice
description: 6 pages, 4 figures
Multi-Step stochastic correction in dynamical fermion updating algorithms
Creators: name: Scholz, Enno E.
name: Montvay, Istvan
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The advantages of using Multi-Step corrections for simulations of lattice gauge theories with dynamical fermions will be discussed. This technique is suited for algorithms based on the Multi-Boson representation of the dynamical fermions as well as for the Hybrid Monte-Carlo (HMC) algorithm and variants of the latter, like the Polynomial-HMC. Especially the latter has the power to deal with an odd number of fermion fields--an essential feature necessary for realistic QCD-simulations with up-, down-, and strange-quarks. In particular, we will discuss the application of the multi-step (actually two-step) correction technique to a PHMC updating algorithm for twisted-mass Wilson fermions with non-degenerate fermion masses, as it was used in recent dynamical simulations for N_f=2+1+1 fermion flavors.
description: 7 pages, 2 figures, talk presented at Lattice 2006(Algorithms, Machines, and Networks), Tucson; v2: replaced with version accepted by PoS: minor modifications, content unchanged
Additional file 1 of Living less safely through the pandemic in England for people with serious mental and physical health conditions: qualitative interviews with service users and carers of Black African, Caribbean, and South-Asian descent
Creators: name: Ocloo, Josephine
name: Stuart, Ruth
name: Dasch, Hannah K.
name: Dyer, Jacqui
name: Choudhury, Dina
name: McAnuff, Leroy
name: McGowan, Stephen
name: Bakolis, Ioannis
name: Das-Munshi, Jayati
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 1: Appendix 1 – Table 4 – Actionable recommendations by service users, carers, and community organisations.
Constraining the population of 6 < z < 10 star-forming galaxies with deep near-IR images of lensing clusters
Creators: name: Richard, Johan
name: Pello, Roser
name: Schaerer, Daniel
name: Borgne, Jean-Francois Le
name: Kneib, Jean-Paul
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) We present the first results of our deep survey of lensing clusters aimed at constraining the abundance of star-forming galaxies at z~6-10. Deep near-IR photometry of two lensing clusters (A1835 and AC114) was obtained with ISAAC/VLT. These images, combined with existing data in the optical bands, including HST images, were used to select very high redshift candidates at z>~6 among the optical-dropouts. We have identified 18(8) first and second-category optical dropouts in A1835 (AC114), detected in more than one filter up to H(Vega)~23.8 (AB~25.2,uncorrected for lensing). Among them, 8(5) exhibit homogeneous SEDs compatible with star-forming galaxies at z>~6, and 5(1) are more likely intermediate-redshift EROs based on luminosity considerations. We have also identified a number of fainter sources in these fields fulfilling our photometric selection and located around the critical lines. We use all these data to make a first attempt at constraining the density of star-forming galaxies present at 66 candidates appears compatible with that of LBGs at z~3. The turnover observed by Bouwens et al. (2005) towards the bright end relative to the z~3 LF is not observed in this sample. Also the upper limit for the UV SFR density at z~6-10 is compatible with the usual values derived at z~5-6, but higher than the estimates obtained in the NICMOS Ultra Deep Field (UDF). Increasing the number of blank and lensing fields with ultra-deep near-IR photometry is essential to get more accurate constraints on the abundance of z>6 galaxies.
description: 35 pages, 19 figures; Accepted for publication in A&A; Corrected missing separation line between First/Second candidates in Table C.2 and added corrections from language editor. Full version with high resolution figures available at http://astro.caltech.edu/~johan/publi.html
Exploration and integration with mixOmics our latest improvements
Creators: name: Francois Bartolo
name: Kim-Anh Lê Cao
Publisher: name: F1000Research
Year: 2015

description: Mixomics is an R package dedicated to the exploration and integration of 'omics datasets (transcriptomics, proteomics, metabolomics etc.). Its first release to the CRAN in 2009 proposed statistical methodologies to integrate two ’omics data sets. Since then numerous methodologies and sparse variants have been implemented such as Generalized Canonical Correlation Analysis (GCCA) to integrate more than two datasets. These latest developments require effective computational optimisation and memory management.
Additional file 2 of Living less safely through the pandemic in England for people with serious mental and physical health conditions: qualitative interviews with service users and carers of Black African, Caribbean, and South-Asian descent
Creators: name: Ocloo, Josephine
name: Stuart, Ruth
name: Dasch, Hannah K.
name: Dyer, Jacqui
name: Choudhury, Dina
name: McAnuff, Leroy
name: McGowan, Stephen
name: Bakolis, Ioannis
name: Das-Munshi, Jayati
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 2: Appendix 2 – Service User Topic Guide.
Angiosperm phylogeny poster – flowering plant systematics
Creators: name: Cole, Theodor C. H.
name: Hilger, Hartmut H.
Publisher: name: F1000Research
Year: 2015

description: This poster presents the phylogenetic tree of angiosperms according to APG and APweb (orders and families) and according to the most recent literature. The main anatomical, morphological, and phytochemical characteristics are provided as common shared features (apomorphies/plesiomorphies) within the tree and for each order.
A Sealed Gas Pixel Detector for X-ray Astronomy
Creators: name: Bellazzini, R.
name: Spandre, G.
name: Minuti, M.
name: Baldini, L.
name: Brez, A.
name: Latronico, L.
name: Omodei, N.
name: Razzano, M.
name: Massai, M. M.
name: Pinchera, M.
name: Pesce-Rollins, M.
name: Sgro, C.
name: Costa, E.
name: Soffitta, P.
name: Sipila, H.
name: Lempinen, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report on the results of a new, sealed, Gas Pixel Detector. The very compact design and the absence of the gas flow system, make this detector substantially ready for use as focal plane detector for future X-ray space telescopes. The instrument brings high sensitivity to X-ray polarimetry, which is the last unexplored field of X-ray astronomy. It derives the polarization information from the track of the photoelectrons that are imaged by a high gain (>1000), fine pitch GEM that matches the pitch of a pixel ASIC which is the collecting anode of the GPD (105k, 50 micron wide, hexagonal cells). The device is able to simultaneously perform good imaging (50-60 micron), moderate spectroscopy (~15% at 6 keV) as well as fast, high rate timing in the 1-10keV range. Moreover, being truly 2D, it is non dispersive and does not require any rotation. The great improvement of sensitivity, at least two orders of magnitude with respect to traditional polarimeters (based on Bragg crystals or Thomson scattering), will allow the direct exploration of the most dramatic objects of the X-ray sky. At the focus of the large mirror area of the XEUS telescope it will be decisive in reaching many of the scientific goals of the mission. With integration times of the order of one day, polarimetry of Active Galactic Nuclei at the per cent level will be possible, making for a real breakthrough in high energy astrophysics.
description: 10 pages, 10 figures, Presented to the Sixth International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (to be published on NIMA)
Classical light dispersion theory in a regular lattice
Creators: name: Marino, M.
name: Carati, A.
name: Galgani, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study the dynamics of an infinite regular lattice of classical charged oscillators. Each individual oscillator is described as a point particle subject to a harmonic restoring potential, to the retarded electromagnetic field generated by all the other particles, and to the radiation reaction expressed according to the Lorentz--Dirac equation. Exact normal mode solutions, describing the propagation of plane electromagnetic waves through the lattice, are obtained for the complete linearized system of infinitely many oscillators. At variance with all the available results, our method is valid for any values of the frequency, or of the ratio between wavelength and lattice parameter. A remarkable feature is that the proper inclusion of radiation reaction in the dynamics of the individual oscillators does not give rise to any extinction coefficient for the global normal modes of the lattice. The dispersion relations resulting from our solution are numerically studied for the case of a simple cubic lattice. New predictions are obtained in this way about the behavior of the crystal at frequencies near the proper oscillation frequency of the dipoles.
description: 15 pages, 1 figure; typos corrected
Additional file 3 of Living less safely through the pandemic in England for people with serious mental and physical health conditions: qualitative interviews with service users and carers of Black African, Caribbean, and South-Asian descent
Creators: name: Ocloo, Josephine
name: Stuart, Ruth
name: Dasch, Hannah K.
name: Dyer, Jacqui
name: Choudhury, Dina
name: McAnuff, Leroy
name: McGowan, Stephen
name: Bakolis, Ioannis
name: Das-Munshi, Jayati
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 3: Appendix 3 – Carer Topic Guide.
From stripe to checkerboard order on the square lattice in the presence of quenched disorder
Creators: name: Del Maestro, Adrian
name: Rosenow, Bernd
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss the effects of quenched disorder on a model of charge density wave (CDW) ordering on the square lattice. Our model may be applicable to the cuprate superconductors, where a random electrostatic potential exists in the CuO2 planes as a result of the presence of charged dopants. We argue that the presence of a random potential can affect the unidirectionality of the CDW order, characterized by an Ising order parameter. Coupling to a unidirectional CDW, the random potential can lead to the formation of domains with 90 degree relative orientation, thus tending to restore the rotational symmetry of the underlying lattice. We find that the correlation length of the Ising order can be significantly larger than the CDW correlation length. For a checkerboard CDW on the other hand, disorder generates spatial anisotropies on short length scales and thus some degree of unidirectionality. We quantify these disorder effects and suggest new techniques for analyzing the local density of states (LDOS) data measured in scanning tunneling microscopy experiments.
description: 10 pages, 11 figures; added reference
Quarkonia correlators and spectral functions from lattice QCD
Creators: name: Petreczky, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss recent progress in calculating quarkonia correlators and spectral functions on the lattice in relation with the problem of quarkonia dissolution at high temperatures and heavy quark transport in Quark Gluon Plasma.
description: Invited plenary talk at Strangeness in Quark Matter 2006, LaTeX 8 pages, uses IOP syle, typos corrected
Non-flow effects in correlation between harmonic flow and transverse momentum in nuclear collisions
Creators: name: Zhang, Chunjian
name: Behera, Arabinda
name: Bhatta, Somadutta
name: Jia, Jiangyong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A large anti-correlation signal between elliptic flow $v_2$ and average transverse momentum $[p_{\mathrm{T}}]$ was recently measured in small collision systems, consistent with a final-state hydrodynamic response to the initial geometry. This negative $v_2$-$[p_{\mathrm{T}}]$ correlation was predicted to change to positive correlation for events with very small charged particle multiplicity $N_{\mathrm{ch}}$ due to initial-state momentum anisotropies of the gluon saturation effects. However, the role of non-flow correlations is expected to be important in these systems, which is not yet studied. We estimate the non-flow effects in $pp$, $p$Pb and peripheral PbPb collisions using {\tt Pythia} and {\tt Hijing} models, and compare them with the experimental data. We show that the non-flow effects are largely suppressed using the rapidity-separated subevent cumulant method (details of the cumulant framework are also provided). The magnitude of the residual non-flow is much less than the experimental observation in the higher $N_{\mathrm{ch}}$ region, supporting the final-state response interpretation. In the very low $N_{\mathrm{ch}}$ region, however, the sign and magnitude of the residual non-flow depend on the model details. Therefore, it is unclear at this moment whether the sign change of $v_2$-$[p_{\mathrm{T}}]$ can serve as evidence for initial state momentum anisotropies predicted by the gluon saturation.
description: 9 pages, 8 figures including an appendix, replace with published version
Quantification pour les paires symetriques et diagrammes de Kontsevich
Creators: name: Cattaneo, Alberto S.
name: Torossian, Charles
Publisher: name: arXiv
Year: 2006
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B, 17B25, 22E, 53C35

description: In this article we use the expansion for biquantization described in Cattaneo-Felder [math.QA/0309180] for the case of symmetric spaces. We introduce a function of two variables $E(X,Y)$ for any symmetric pairs. This function has an expansion in terms of Kontsevich's diagrams. We recover most of the known results though in a more systematic way by using some elementary properties of this $E$ function. We prove that Cattaneo and Felder's star product coincides with Rouviere's for any symmetric pairs. We generalize some of Lichnerowicz's results for the commutativity of the algebra of invariant differential operators and solve a long standing problem posed by M. Duflo for the expression of invariant differential operators on any symmetric spaces in exponential coordinates. We describe the Harish-Chandra homomorphism in the case of symmetric spaces by using all these constructions. We develop a new method to construct characters for algebras of invariant differential operators. We apply these methods in the case of $σ$-stable polarizations.
description: To be published in Annales de l'ENS. French, 78 pages, 13 figures, English Introduction. Typographic errors corrected. Sections 1.3 and 1.6 rewritten. Sections 3.5 and 3.6 and 5.5 have been reduced. Many pictures have been deleted and presentation changed
Characterization of a hydrocarbon contaminated site using in-situ methods
Creators: name: Everard, Jodi Lynne
Publisher: name: University of British Columbia
Year: 2009

description: Conventional drilling and soil sampling together with well installation and water sampling are currently the most common methods used to assess site contamination. The time and expense associated with this approach often limit the scope of the investigation and the extent to which the stratigraphy and contaminant plume may be delineated. As such, there has been increasing interest in developing/refining technologies and methodologies that would provide quick, reliable and cost effective site screening. The piezocone penetration (CPTU) test and the resistivity CPTU (RCPTU) test utilize a direct push technology and provide rapid, high resolution delineation of stratigraphy and determination of in-situ hydrogeological regime. Both geotechnical and hydrogeological parameters are readily obtained from the testing. Equilibrium pore pressures can be obtained by conducting pore pressure dissipations at select depths enabling determination of existing hydraulic gradients and hydraulic conductivity values. Calibration of bulk resistivity measurements to discrete depth water sampling and appropriate analyses enable identification of discrete lenses and/or zones of elevated concentrations of contaminants. This technology was used to characterize a hydrocarbon contaminated industrial site located in the Lower Mainland, B.C. The project demonstrated how the RCPTU in conjunction with discrete depth water sampling can be used and interpreted to provide a geo-environmental characterization of a contaminated site, with respect to stratigraphy, geotechnical and hydrogeological parameters of interest and contaminant location and distribution within the subsurface. Results obtained from the RCPTU program were compared to those obtained from a more conventional investigation. Practical applications and limitations of penetration technology as applied to this hydrocarbon contaminated site are also presented and discussed. Recommendations for further areas of research with respect to tool and method usage are listed. Key words: resistivity, piezocone, in-situ testing, ground water, hydrocarbon, site characterization, geo-environmental
Anémonas/Anemones
Creators: name: González, Ricardo
name: Ugalde, Diana
name: Simoes, Nuno
name: Guerra, Alberto
Publisher: name: Zenodo
Year: 2019
Subjects: subject: Marine Biodiversity
subject: Biodiversity
subject: Taxonomy
subject: Marine Ecology
subject: Marine Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Marine Environment
subject: Ecosystem Ecology

description: This Infographic is a product of BDMY (https://www.bdmy.org.mx) project, that
 was produced with funds of the Harte Research Institute for Gulf of
 Mexico Studies, and CONABIO (Mexico).
 The information in the infographic was reviewed and validated by a
 group of specialists in the taxon.
Feebly-Interacting Particles:FIPs 2020 Workshop Report
Creators: name: Agrawal, Prateek
name: Bauer, Martin
name: Beacham, James
name: Berlin, Asher
name: Boyarsky, Alexey
name: Cebrian, Susana
name: Cid-Vidal, Xabier
name: d'Enterria, David
name: De Roeck, Albert
name: Drewes, Marco
name: Echenard, Bertrand
name: Giannotti, Maurizio
name: Giudice, Gian Francesco
name: Gninenko, Sergei
name: Gori, Stefania
name: Goudzovski, Evgueni
name: Heeck, Julian
name: Hernandez, Pilar
name: Hostert, Matheus
name: Irastorza, Igor
name: Izmaylov, Alexander
name: Jaeckel, Joerg
name: Kahlhoefer, Felix
name: Knapen, Simon
name: Krnjaic, Gordan
name: Lanfranchi, Gaia
name: Monroe, Jocelyn
name: Martinez-Outschoorn, Verena
name: Lopez-Pavon, Jacobo
name: Pascoli, Silvia
name: Pospelov, Maxim
name: Redigolo, Diego
name: Ringwald, Andreas
name: Ruchayskiy, Oleg
name: Ruderman, Joshua
name: Russell, Heather
name: Salfeld-Nebgen, Jakob
name: Schuster, Philip
name: Shaposhnikov, Mikhail
name: Shchutska, Lesya
name: Shelton, Jessie
name: Soreq, Yotam
name: Stadnik, Yevgeny
name: Swallow, Joel
name: Tobioka, Kohsaku
name: Tsai, Yu-Dai
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop "Physics Beyond Colliders meets theory", held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.
description: 240 pages, 71 figures (version published on EPJC)
Additional file 4 of Living less safely through the pandemic in England for people with serious mental and physical health conditions: qualitative interviews with service users and carers of Black African, Caribbean, and South-Asian descent
Creators: name: Ocloo, Josephine
name: Stuart, Ruth
name: Dasch, Hannah K.
name: Dyer, Jacqui
name: Choudhury, Dina
name: McAnuff, Leroy
name: McGowan, Stephen
name: Bakolis, Ioannis
name: Das-Munshi, Jayati
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 4: Appendix 4 – COREQ Checklist.
Nanometer-scale sharpness in corner-overgrown heterostructures
Creators: name: Steinke, L.
name: Cantwell, P.
name: Zakharov, D.
name: Stach, E.
name: Zaluzec, N. J.
name: Morral, A. Fontcuberta i
name: Bichler, M.
name: Abstreiter, G.
name: Grayson, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A corner-overgrown GaAs/AlGaAs heterostructure is investigated with transmission and scanning transmission electron microscopy, demonstrating self-limiting growth of an extremely sharp corner profile of 3.5 nm width. In the AlGaAs layers we observe self-ordered diagonal stripes, precipitating exactly at the corner, which are regions of increased Al content measured by an XEDS analysis. A quantitative model for self-limited growth is adapted to the present case of faceted MBE growth, and the corner sharpness is discussed in relation to quantum confined structures. We note that MBE corner overgrowth maintains nm-sharpness even after microns of growth, allowing the realization of corner-shaped nanostructures.
description: 4 pages, 3 figures
Dynamics of smectic elastomers
Creators: name: Stenull, Olaf
name: Lubensky, T. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the low-frequency, long-wavelength dynamics of liquid crystal elastomers, crosslinked in the smectic-$A$ phase, in their smectic-$A$, biaxial smectic and smectic-$C$ phases. Two different yet related formulations are employed. One formulation describes the pure hydrodynamics and does not explicitly involve the Frank director, which relaxes to its local equilibrium value in a non-hydrodynamic time. The other formulation explicitly treats the director and applies beyond the hydrodynamic limit. We compare the low-frequency, long-wavelength dynamics of smectic-$A$ elastomers to that of nematics and show that the two are closely related. For the biaxial smectic and the smectic-$C$ phases, we calculate sound velocities and the mode structure in certain symmetry directions. For the smectic-$C$ elastomers, in addition, we discuss in some detail their possible behavior in rheology experiments.
description: 19 pages, 3 figures
Linear cosmological constraints on 2-body decaying dark matter scenarios and the $S_8$ tension
Creators: name: Abellán, Guillermo Franco
name: Murgia, Riccardo
name: Poulin, Vivian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The '$S_8$ tension' is a longstanding discrepancy between the cosmic microwave background (CMB) and weak gravitational lensing determination of the amplitude of matter fluctuations, parametrized as $S_8\equivσ_8(Ω_m/0.3)^{0.5}$, where $σ_8$ is the root mean square of matter fluctuations on a 8 $h^{-1}$Mpc scale, and $Ω_m$ is the total matter abundance. It was recently shown that dark matter (DM) decaying into a massless (dark radiation) and a massive (warm DM) species, with a lifetime $Γ^{-1} \simeq 55~(\varepsilon/0.007)^{1.4}$ Gyrs -- where $\varepsilon$ represent the mass-energy fraction transferred to the massless component -- can ease the tension. Thanks to a fast and accurate fluid approximation scheme for the warm species, we perform a comprehensive study of this 2-body decaying DM scenario, discussing in detail its dynamics and its impact on the CMB and linear matter power spectra. We then investigate the implications for the '$S_8$ tension' against a number of changes in the analysis: different $S_8$ priors, marginalization over the lensing information in Planck data, trading Planck high$-\ell$ polarization data for those from the SPTpol and ACTPol surveys, and the inclusion of the recent results from the Xenon1T collaboration. We conclude that the preference for decaying DM, apparent only when the $S_8$ value determined from weak lensing data is added to the analysis, does not sensibly degrade the fit to any of the cosmological data-sets considered, and that the model could potentially explain the anomalous electron recoil excess reported by the Xenon1T collaboration. Furthermore, we explictly show that while current CMB data alone are not sensitive enough to distinguish between standard CDM and decaying DM, next-generation CMB observations (CMB-S4) can unambiguously detect its signature.
description: 18+7 pages, 19 figures. Improved slightly text and figures. Added ACTPol analysis and CMB-S4 forecast. Included discussion on linear priors. v2 matches the published PRD version. Comments welcome!
Effects of primordial chemistry on the cosmic microwave background
Creators: name: Schleicher, D. R. G.
name: Galli, D.
name: Palla, F.
name: Camenzind, M.
name: Klessen, R. S.
name: Bartelmann, M.
name: Glover, S. C. O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Previous works have demonstrated that the generation of secondary CMB anisotropies due to the molecular optical depth is likely too small to be observed. In this paper, we examine additional ways in which primordial chemistry and the dark ages might influence the CMB. We present a detailed and updated chemical network and give an overview of the interactions of molecules with the CMB. We consider the optical depth due to line absorption, photoionization, photodissociation and free-free processes, and estimate the resulting changes in the CMB temperature and its power spectrum. The most promising results are obtained for the negative hydrogen ion \HM and the \HeHII molecule. The free-free process of \HM yields a relative change in the CMB temperature of up to $2\times10^{-11}$, and leads to a frequency-dependent change in the power spectrum of the order $10^{-7}$ at 30 GHz. With a change of the order $10^{-10}$ in the power spectrum, our result for the bound-free process of \HM is significantly below a previous suggestion. \HeHII efficiently scatters CMB photons and smears out primordial fluctuations, leading to a change in the power spectrum of the order $10^{-8}$. Improvements in the accuracy of future CMB experiments may thus help to constrain and finally detect these interesting signals from the dark ages of the universe.
description: 16 pages, 15 figures, accepted for publication at A&A. Discussion section updated
Additional file 5 of Living less safely through the pandemic in England for people with serious mental and physical health conditions: qualitative interviews with service users and carers of Black African, Caribbean, and South-Asian descent
Creators: name: Ocloo, Josephine
name: Stuart, Ruth
name: Dasch, Hannah K.
name: Dyer, Jacqui
name: Choudhury, Dina
name: McAnuff, Leroy
name: McGowan, Stephen
name: Bakolis, Ioannis
name: Das-Munshi, Jayati
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 5: Appendix 5 – GRIPP2 short form.
Probing Lepton Number Violating Interactions with Beta-beams
Creators: name: Agarwalla, Sanjib Kumar
name: Rakshit, Subhendu
name: Raychaudhuri, Amitava
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that a detector placed near a beta-beam storage ring can probe lepton number violating interactions, as predicted by supersymmetric theories with R-parity non-conservation. In the presence of such interactions, nu_tau can be produced during beta-decay leading to tau leptons through weak interactions. Alternatively, electron neutrinos from beta-decay of radioactive ions can produce tau leptons in a nearby detector through these interactions. The muons from the decay of these tau leptons can be readily identified in a small iron calorimeter detector and will signal violation of R-parity.
description: To be published in Phys. Lett. B. Background analysis redone with a detector simulation study. 19 pages
Pluripotential Monge-Amp{è}re flows in Big Cohomology Classes
Creators: name: Dang, Quang-Tuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53C44

description: We study pluripotential complex Monge-Ampère flows in big cohomology classes on compact K{ä}hler manifolds. We use the Perron method, considering pluripotential subsolutions to the Cauchy problem. We prove that, under natural assumptions on the data, the upper envelope of all subsolutions is continuous in space and semi-concave in time, and provides a unique pluripotential solution with such regularity. We apply this theory to study pluripotential K{ä}hler-Ricci flows on compact K{ä}hler manifolds of general type as well as on stable varieties.
description: 47 pages, to appear in J. Funct. Anal
Microlocalization of subanalytic sheaves
Creators: name: Prelli, Luca
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32C35, 35A27, 18F10

description: In this paper we define specialization and microlocalization for subanalytic sheaves. Applying these functors to the sheaves of tempered and Whytney holomorphic functions we get a unifying description of tempered and formal microlocalization using the theory of subanalytic sheaves.
description: 99 pages, uses xy-pic
Galaxy Zoo DECaLS: Detailed Visual Morphology Measurements from Volunteers and Deep Learning for 314,000 Galaxies
Creators: name: Walmsley, Mike
name: Lintott, Chris
name: Geron, Tobias
name: Kruk, Sandor
name: Krawczyk, Coleman
name: Willett, Kyle W.
name: Bamford, Steven
name: Kelvin, Lee S.
name: Fortson, Lucy
name: Gal, Yarin
name: Keel, William
name: Masters, Karen L.
name: Mehta, Vihang
name: Simmons, Brooke D.
name: Smethurst, Rebecca
name: Smith, Lewis
name: Baeten, Elisabeth M.
name: Macmillan, Christine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present Galaxy Zoo DECaLS: detailed visual morphological classifications for Dark Energy Camera Legacy Survey images of galaxies within the SDSS DR8 footprint. Deeper DECaLS images (r=23.6 vs. r=22.2 from SDSS) reveal spiral arms, weak bars, and tidal features not previously visible in SDSS imaging. To best exploit the greater depth of DECaLS images, volunteers select from a new set of answers designed to improve our sensitivity to mergers and bars. Galaxy Zoo volunteers provide 7.5 million individual classifications over 314,000 galaxies. 140,000 galaxies receive at least 30 classifications, sufficient to accurately measure detailed morphology like bars, and the remainder receive approximately 5. All classifications are used to train an ensemble of Bayesian convolutional neural networks (a state-of-the-art deep learning method) to predict posteriors for the detailed morphology of all 314,000 galaxies. When measured against confident volunteer classifications, the networks are approximately 99% accurate on every question. Morphology is a fundamental feature of every galaxy; our human and machine classifications are an accurate and detailed resource for understanding how galaxies evolve.
description: Accepted by MNRAS July '21. Open access DOI below. Data at https://doi.org/10.5281/zenodo.4196266. Code at https://www.github.com/mwalmsley/zoobot. Docs at https://zoobot.readthedocs.io/. Interactive viewer at https://share.streamlit.io/mwalmsley/galaxy-poster/gz_decals_mike_walmsley.py
Cyclic response of Oak Street Bridge bents
Creators: name: Seethaler, Markus
Publisher: name: University of British Columbia
Year: 2009

description: The Ministry of Transportation and Highways (MOTH) of British Columbia has initiated an upgrade program for its bridges. Among them is Oak Street Bridge, which spans the Fraser River between Vancouver and Richmond. The Ministry of Transportation and Highways of British Columbia decided to supplement the seismic assessment of the Oak Street Bridge by large scale tests of the bridge bents at the structures laboratories of the University of British Columbia. The proposed tests consists of slow cyclic loading through increasing displacements. The test series consists of five specimens of the Oak Street Bridge, with various retrofits and an as built version, and one as built specimen representing the Queensborough Bridge. A test setup to conduct the tests was designed and installed in the UBC structures laboratory. Predictions of the response of the prototype and the test specimen were conducted to establish a testing regime and loading sequence for the slow cyclic testing program. Various analysis methods were used to assess the seismic performance of the as built bridge bent. The first test, an as built model of the Oak Street Bridge bent, supplied the data of the experimental response to compare to the analytical predictions, and gave some further insight into the failure modes, and established the ultimate strengths. The severe deficiencies in shear reinforcement in the cap beam of the bents made an accurate prediction of the response of the bridge bent very difficult. The experimental investigation resulted in much improved understanding of the seismic performance of this very typical structural component of many bridge approaches in the Lower Mainland of British Columbia.
Symmetry transformation of subregion bulk representations
Creators: name: Kajuri, Nirmalya
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Different AdS-Rindler wedges can be mapped to each other using bulk isometries. In this paper we address how the boundary representations corresponding to the AdS-Rindler wedges transform under such isometries. We show that when a bulk wedge is mapped to another using a bulk isometry, their boundary representations are mapped by the conformal transformation corresponding to the isometry. We comment on the import of this result on the relation between AdS/CFT and quantum error correction.
description: Version accepted for publication in Phys Letters B