cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring energy efficiency pathways for the Nigerian energy transition plan
Creators: name: Golobish, Sarah
name: Shari, Babajide E
name: Emmanuel, Victor
Publisher: name: Zenodo
Year: 2022
Subjects: Energy Efficiency
Nigeria transition plan
Climate Compatible Growth
Total Energy Demand
Nigeria
OSeMOSYS
ClicSAND

description: Presentation for the 2022 Joint Summer School on Modelling Tools for Sustainable Development. The study explores the impact of energy efficiency on demand, emissions, and system costs in the Nigerian power sector using OSeMOSYS and ClicSAND.
Diffraction in Periodic Structures and Optimal Design of Binary Gratings II. Gradient Formulas for TM Polarization
Creators: name: Elschner, Johannes
name: Schmidt, Gunther
Publisher: name: Weierstrass Institute
Year: 1999
Subjects: subject: Diffraction problems
subject: Helmholtz equation
subject: shape optimization
subject: 78A45
subject: 35J20
subject: 49J20

description: This paper provides the mathematical foundation of analytic formulae for derivatives of TM reflection and transmission coefficients of diffraction gratings with respect to geometric parameters of non-smooth grating profiles and interfaces. This problem arises in optimal design problems for those optical devices studied in Part I. The derivatives can be expressed by contour integrals involving the direct and adjoint solutions of TM diffraction problems.
Theoretical aspects of photon production in high energy nuclear collisions
Creators: name: Ghiglieri, Jacopo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A brief overview of the calculation of photon and dilepton production rates in a deconfined quark-gluon plasma is presented. We review leading order rates as well as recent NLO determinations and non-equilibrium corrections. Furthermore, the difficulties in a non-perturbative lattice determination are summarized.
description: 8 pages, to appear in the proceedings of Quark Matter 2014
Rate dependence of hysteresis in one-dimensional phase transitions
Creators: name: Bubner, Nikolaus
name: Mackin, Gail
name: Rogers, Robert C.
Publisher: name: Weierstrass Institute
Year: 1999
Subjects: subject: hysteresis
subject: numerical simulation
subject: rate-type viscosity
subject: solid-solid phase transitions
subject: thermal dissipation
subject: 73K99
subject: 35Q72
subject: 80A22

description: Two models for solid-solid phase transition in one-dimension are examined. Thermal dissipation and a rate-type viscosity are added to a stress with strain gradient. Numerical examinations of both models reveal similar results, in particular, stress-strain hysteresis, which is a commonly observed phenomena, and stability of single-phase boundary solutions.
Regular black holes with a nonlinear electrodynamics source
Creators: name: Balart, Leonardo
name: Vagenas, Elias C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct several charged regular black hole metrics employing mass distribution functions which are inspired by continuous probability distributions. Some of these metrics satisfy the weak energy condition and asymptotically behave as the Reissner--Nordstrom black hole. In each case, the source to the Einstein equations corresponds to a nonlinear electrodynamics model, which in the weak field limit becomes the Maxwell theory (compatible with the Maxwell weak field limit or approximation). Furthermore, we include other regular black hole solutions that satisfy the weak energy condition and some of them correspond to the Maxwell theory in the weak field limit.
description: v1: 19 pages, LaTeX, no figures; v2: typos corrected and one reference removed to match published version in Phys. Rev. D
Cosmic web alignments with the shape, angular momentum and peculiar velocities of dark matter haloes
Creators: name: Forero-Romero, Jaime E.
name: Contreras, Sergio
name: Padilla, Nelson
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the alignment of dark matter haloes with the cosmic web characterized by the tidal and velocity shear fields. We focus on the alignment of their shape, angular momentum and peculiar velocities. We use a cosmological N-body simulation that allows to study dark matter halos spanning almost five orders of magnitude in mass ($10^{9}$-$10^{14}$) $h^{-1}$$M_{\odot}$ and spatial scales of $(0.5$-$1.0)$ $h^{-1}$ Mpc to define the cosmic web. We find that the halo shape presents the strongest alignment along the smallest tidal eigenvector, e.g. along filaments and walls, with a signal that gets stronger as the halo mass increases. In the case of the velocity shear field only massive halos $>10^{12}$ $h^{-1}$$M_{\odot}$ tend to have their shapes aligned along the largest tidal eigenvector; that is, perpendicular to filaments and walls. For the angular momentum we find alignment signals only for halos more massive than $10^{12}$ $h^{-1}$$M_{\odot}$ both in the tidal and velocity shear webs where the preferences are for it to be parallel to the middle eigenvector; perpendicular to filaments and parallel to walls. Finally, the peculiar velocities show a strong alignment along the smallest tidal eigenvector for all halo masses; halos move along filaments and walls. In the velocity shear the same alignment is present but weaker and only for haloes less massive than $10^{12}$ $h^{-1}$$M_{\odot}$. Our results clearly show that the two different algorithms we used to define the cosmic web describe different physical aspects of non-linear collapse and should be used in a complementary way to understand the effect of the cosmic web on galaxy evolution.
description: 14 pages, 5 figures, MNRAS accepted
A critical analysis of the self assessment basis of taxation
Creators: name: Molyneux, Anne Eugénie.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: Towards Secure Urban Infrastructures: Cyber Security Challenges to Information and Communication Technology in Smart Cities
Creators: name: Reuter, Christian
name: Haunschild, Jasmin
name: Hollick, Matthias
name: Mühlhäuser, Max
name: Vogt, Joachim
name: Kreutzer, Michael
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2023

description: The growth of cities continues to be a global megatrend. As more and more people live in urban areas and urban services and infrastructures are under growing strain, technologies are increasingly being researched and used to make city life more efficient and comfortable. As a result, so-called “Smart Cities” have complex IT infrastructures and cyber-physical systems such as sensor/actuator networks for the general population and are developing worldwide. Urban infrastructure must be secured against attacks, ensuring reliable and resilient services for citizens as well as privacy and data security. This paper introduces selected challenges faced by infrastructure providers, citizens and decision-makers in handling attacks aimed at information and communication technologies (ICT) of urban infrastructures and presents current research avenues for tackling cyberattacks and for developing tools for creating, portraying and disseminating actionable information as one important response to security challenges. It then presents findings from a representative survey conducted in Germany (N=1091) on the experiences and perceptions of citizens concerning the relevance of cyberattacks will be presented.
Transport and pinning properties of Ag-doped FeSe0.94
Creators: name: Nazarova, E.
name: Balchev, N.
name: Nenkov, K.
name: Buchkov, K.
name: Kovacheva, D.
name: Zahariev, A.
name: Fuchs, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigated the superconducting transition and the pinning properties of undoped and Ag-doped FeSe0.94 at magnetic fields up to 14 T. It was established that due to Ag addition the hexagonal phase formation in melted FeSe0.94 samples is suppressed and the grain connectivity is strongly improved. The obtained superconducting zero-field transition becomes sharp (with a transition width below 1 K), Tc and the upper critical field were found to increase, whereas the normal state resistivity significantly reduces becoming comparable with those of FeSe single crystals. In addition, a considerable magnetoresistance was observed due to Ag doping. The resistive transition of undoped and Ag-doped FeSe0.94 is dominated by thermally activated flux flow. From the activation energy U vs H dependence, a crossover from single-vortex pinning to a collective creep pinning behavior was found with increasing the magnetic field.
description: 19 pages, 11 figures
Fanaticism, Patriotism and Politics
Creators: name: Ikpo, Ley Gregoire
Publisher: name: figshare
Year: 2023
Subjects: Peace studies
Political theory and political philosophy
Comparative government and politics

description: The research work is conducted through deductive reasoning. It is designed upon qualitative research but digits are calculated when necessary. Sources are of primary and secondary types which are both in English and French. The collected data are newspapers, academic books, official documents and peer review scientific articles. The research is of intertextuality type due to the interpretation and analysis of former researchers’ works. Three theories were developed in order to give a good understanding of the terminologies to the audience. Dependent and independent variables are explained throughout the development of the research paper. Dependent variables are changing while independent variables do not (Voit, 2000). Côte d’Ivoire is the independent variable since the country as a territory remained the same. Two dependent variables are referred to as the type of political systems applied to the territory with different faces in reference to both the colonial and postcolonial eras. Three theories are explained in the research paper which do not fully justify the causes or reasons of political instability in the Republic of Côte d’Ivoire during the colonial and postcolonial periods, since social sciences differ from hard sciences (Boldyrev & Svetlova, 2016). Hard sciences are mathematically demonstrated while social sciences are abstract concepts regardless of being scientifically approved. Theories of fanaticism, patriotism and politics are detailed in the paper in order to help audiences and readers to have a good comprehension of these three terminologies and differentiate them from each other. First the theory of fanaticism is explained and the one of patriotism and in last position the theory of politics.
Generalized Uncertainty Principle: Implications for Black Hole Complementarity
Creators: name: Chen, Pisin
name: Ong, Yen Chin
name: Yeom, Dong-han
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: At the heart of the black hole information loss paradox and the firewall controversy lies the conflict between quantum mechanics and general relativity. Much has been said about quantum corrections to general relativity, but much less in the opposite direction. It is therefore crucial to examine possible corrections to quantum mechanics due to gravity. Indeed, the Heisenberg Uncertainty Principle is one profound feature of quantum mechanics, which nevertheless may receive correction when gravitational effects become important. Such generalized uncertainty principle [GUP] has been motivated from not only quite general considerations of quantum mechanics and gravity, but also string theoretic arguments. We examine the role of GUP in the context of black hole complementarity. We find that while complementarity can be violated by large N rescaling if one assumes only the Heisenberg's Uncertainty Principle, the application of GUP may save complementarity, but only if certain N-dependence is also assumed. This raises two important questions beyond the scope of this work, i.e., whether GUP really has the proposed form of N-dependence, and whether black hole complementarity is indeed correct.
description: Added footnote 5; version accepted by JHEP
Supplementary Figure 1 - 3 from Polo-like kinase 1 promotes Cdc42-induced actin polymerization for asymmetric division in oocytes
Creators: name: Yuen, Wai Shan
name: Zhang, Qing Hua
name: Bourdais, Anne
name: Adhikari, Deepak
name: Halet, Guillaume
name: Carroll, John
Publisher: name: The Royal Society
Year: 2023
Subjects: Cell Biology
Developmental Biology

description: Supplementary Figures 1 through 3, including raw data files of western blots
Charge density wave soliton liquid
Creators: name: Matsuura, T.
name: Hara, J.
name: Inagaki, K.
name: Tsubota, M.
name: Hosokawa, T.
name: Tanda, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the charge density wave transport in a quasi-one-dimensional conductor, orthorhombic tantalum trisulfide ($o$-TaS$_3$), by applying a radio-frequency ac voltage. We find a new ac-dc interference spectrum in the differential conductance, which appear on both sides of the zero-bias peak. The frequency and amplitude dependences of the new spectrum do not correspond to those of any usual ac-dc interference spectrum (Shapiro steps). The results suggest that CDW phase dynamics has a hidden degree of freedom. We propose a model in which $2π$ phase solitons behave as liquid. The origin of the new spectrum is that the solitons are depinned from impurity potentials assisted by an ac field when small dc field is applied. Our results provide a new insight as regards our understanding of an elementary process in CDW dynamics.
description: 16 pages, 5 figures
Webinar RJI Jateng: Optimalisasi MsWord dalam Layout Jurnal
Creators: name: Suyanto, Helmi
Publisher: name: Zenodo
Year: 2020
Subjects: layout jurnal
full text
bengkel jurnal

description: Selama ini, image yang terbentuk bahwa layout jurnal atau buku harus menggunakan program semacam PageMaker atau Adobe InDesign. Presentasi ini membahas tentang optimalisasi Ms.Word dalam layout jurnal. Disampaikan pada webinar yang diselenggarakan oleh Relawan Jurnal Indonesia Pengurus Daerah Jawa Tengah, Sabtu 31 Oktober 2020.
The Vertical, the Horizontal and the Rest: anatomy of the middle cohomology of Calabi-Yau fourfolds and F-theory applications
Creators: name: Braun, Andreas P.
name: Watari, Taizan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The four-form field strength in F-theory compactifications on Calabi-Yau fourfolds takes its value in the middle cohomology group $H^4$. The middle cohomology is decomposed into a vertical, a horizontal and a remaining component, all three of which are present in general. We argue that a flux along the remaining or vertical component may break some symmetry, while a purely horizontal flux does not influence the unbroken part of the gauge group or the net chirality of charged matter fields. This makes the decomposition crucial to the counting of flux vacua in the context of F-theory GUTs. We use mirror symmetry to derive a combinatorial formula for the dimensions of these components applicable to any toric Calabi--Yau hypersurface, and also make a partial attempt at providing a geometric characterization of the four-cycles Poincaré dual to the remaining component of $H^4$. It is also found in general elliptic Calabi-Yau fourfolds supporting SU(5) gauge symmetry that a remaining component can be present, for example, in a form crucial to the symmetry breaking ${\rm SU}(5) \longrightarrow {\rm SU}(3)_C \times {\rm SU}(2)_L \times {\rm U}(1)_Y$. The dimension of the horizontal component is used to derive an estimate of the statistical distribution of the number of generations and the rank of 7-brane gauge groups in the landscape of F-theory flux vacua.
description: 78 pages, 10 figures, 6 tables; v2: typos fixed, references added; v3: typos fixed, improved discussion in Sect. 6
The nature of separator current layers in MHS equilibria I. Current parallel to the separator
Creators: name: Stevenson, J. E. H.
name: Parnell, C. E.
name: Priest, E. R.
name: Haynes, A. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Separators, which are in many ways the three-dimensional equivalent to two-dimensional nulls, are important sites for magnetic reconnection. Magnetic reconnection occurs in strong current layers which have very short length scales. The aim of this work is to explore the nature of current layers around separators. A separator is a special field line which lies along the intersection of two separatrix surfaces and forms the boundary between four topologically distinct flux domains. In particular, here the current layer about a separator that joins two 3D nulls and lies along the intersection of their separatrix surfaces is investigated. A magnetic configuration containing a single separator embedded in a uniform plasma with a uniform electric current parallel to the separator is considered. This initial magnetic setup, which is not in equilibrium, relaxes in a non-resistive manner to form an equilibrium. The relaxation is achieved using the 3D MHD code, Lare3d, with resistivity set to zero. A series of experiments with varying initial current are run to investigate the characteristics of the resulting current layers present in the final (quasi-) equilibrium states. In each experiment, the separator collapses and a current layer forms along it. The dimensions and strength of the current layer increase with initial current. It is found that separator current layers formed from current parallel to the separator are twisted. Also the collapse of the separator is a process that evolves like an infinite-time singularity where the length, width and peak current in the layer grow slowly whilst the depth of the current layer decreases.
description: 15 pages, 14 figures
Molecular Population Genetics of Aspen Mosaic-Associated Virus in Finland and Sweden
Creators: name: Nourinejhad Zarghani, Shaheen
name: Al Kubrusli, Rim
name: Iancev, Serghei
name: Jalkanen, Risto
name: Büttner, Carmen
name: Von Bargen, Susanne
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: emaravirus
subject: –ssRNA
subject: full length
subject: PCR–RFLP
subject: phylogeny
subject: diversity
subject: RT–PCR
subject: cloning
subject: forest
subject: ornamental trees
subject: 570 Biologie

description: Aspen mosaic-associated virus (AsMaV) is a newly identified Emaravirus, in the family Fimoviridae, Bunyavirales, associated with mosaic symptoms in aspen trees (Populus tremula). Aspen trees are widely distributed in Europe and understanding the population structure of AsMaV may aid in the development of better management strategies. The virus genome consists of five negative-sense single-stranded RNA (–ssRNA) molecules. To investigate the genetic diversity and population parameters of AsMaV, different regions of the genome were amplified and analyzed and full-length sequence of the divergent isolates were cloned and sequenced. The results show that RNA3 or nucleoprotein is a good representative for studying genetic diversity in AsMaV. Developed RT–PCR–RFLP was able to identify areas with a higher number of haplotypes and could be applied for screening the large number of samples. In general, AsMaV has a conserved genome and based on the phylogenetic studies, geographical structuring was observed in AsMaV isolates from Sweden and Finland, which could be attributed to founder effects. The genome of AsMaV is under purifying selection but not distributed uniformly on genomic RNAs. Distant AsMaV isolates displayed amino acid sequence variations compared to other isolates, and bioinformatic analysis predicted potential post-translational modification sites in some viral proteins.
Distribution of the Number of Generations in Flux Compactifications
Creators: name: Braun, Andreas P.
name: Watari, Taizan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Flux compactification of string theory generates an ensemble with a large number of vacua called the landscape. By using the statistics of various properties of low-energy effective theories in the string landscape, one can therefore hope to provide a scientific foundation to the notion of naturalness. This article discusses how to answer such questions of practical interest by using flux compactification of F-theory. It is found that the distribution is approximately in a factorized form given by the distribution of the choice of 7-brane gauge group, that of the number of generations $N_{\rm gen}$ and that of effective coupling constants. The distribution of $N_{\rm gen}$ is approximately Gaussian for the range $|N_{\rm gen}| \lesssim 10$. The statistical cost of higher-rank gauge groups is also discussed.
description: 4 pages, 2 tables; v2: improved discussion in Sect. 3A
title: Wie sehen Mitarbeiter von Feuerwehr und THW den Einsatz sozialer Medien in Gefahrenlagen?
Creators: name: Reuter, Christian
name: Ludwig, Thomas
name: Kaufhold, Marc-André
name: Spielhofer, Thomas
Publisher: name: Beta Verlag & Marketinggesellschaft mbH
Year: 2023

description: Zahlreiche Studien und Berichte zeigen, dass soziale Medien in Gefahrenlagen eingesetzt werden – und dass trotz möglicher Herausforderungen für Behörden und Organisationen mit Sicherheitsaufgaben (BOS) nutzbringende Anwendungsfälle identifiziert werden können. Auch wenn unstrittig ist, dass die Verbreitung von Fehlinformationen und sogenannte „Unfallgaffer“ nicht gefördert werden sollten, besteht die Möglichkeit, die verfügbaren Daten aus sozialen Medien geeignet zu nutzen. Empirische Studien hinsichtlich der Einstellungen von BOS zu sozialen Medien sind derzeit noch nicht weit verbreitet. Dieser Artikel fasst die Ergebnisse einer Umfragestudie mit 761 BOS-Mitarbeitern in 32 europäischen Ländern im Rahmen des EU-Projekts „EmerGent“ zusammen. Die Ziele der Umfrage waren die Untersuchung der Meinungen von BOS zu sozialen Medien für den privaten und organisatorischen Gebrauch sowie Hauptfaktoren, die die aktuelle und wahrscheinliche zukünftige Nutzung von sozialen Medien in ihren Organisationen beeinflussen.
A new mechanism of realizing inflationary universe with recourse to backreaction of quantized free fields -- Inflation without inflaton --
Creators: name: Habara, Yoshinobu
name: Kawai, Hikaru
name: Ninomiya, Masao
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is shown that the inflationary era in early universe is realized due to the effect of backreaction of quantized matter fields. In fact we start by quantizing a free scalar field in the Friedmann-Robertson-Walker space-time, and the field is fluctuating quantum mechanically around the bottom of the mass potential. We then obtain the vacuum expectation value of the energy density of the scalar field as a functional of the scale factor $a(t)$ of the universe. By plugging it into the Einstein equation, a self-consistent equation is established in which the matter fields determine the time evolution of the universe. We solve this equation by setting few conditions and find the following solution: the universe expands à la de Sitter with e-folding number $\gtrsim 60$ and then it turns to shrink with a decreasing Hubble parameter $H(t)$ which rapidly goes to zero.
description: 25 pages, 5 figures
The Exact Effective Couplings of 4D N=2 gauge theories
Creators: name: Mitev, Vladimir
name: Pomoni, Elli
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The anomalous dimensions of operators in the purely gluonic SU(2,1|2) sector of any planar conformal N=2 theory can be read off from the N=4 SYM results by replacing the N=4 coupling constant by an interpolating function of the N=2 coupling constants, to which we refer to as the effective coupling. For a large class of N=2 theories we compute the weak coupling expansion of these functions as well as the leading strong coupling term by employing supersymmetric localization. Via Feynman diagrams, we interpret our results as the relative (between N=2 and N=4) finite renormalization of the coupling constant. Using the AdS/CFT dictionary, we identify the effective couplings with the effective string tensions of the corresponding gravity dual theories. Thus, any observable in the SU(2,1|2) sector can be obtained from its N=4 counterpart by replacing the N=4 coupling constant by the universal, for a given theory, effective coupling.
description: 5 pages, Letter, v2: added the leading term in strong coupling limit, minor changes to the main text and one additional reference
Implementation and evaluation of a multilingual search pilot in the Europeana digital library (presentation)
Creators: name: Marrero, Mónica
name: Isaac, Antoine
Publisher: name: Zenodo
Year: 2022
Subjects: Information retrieval
Multilinguality
Cultural Heritage

description: Presentation of the paper "Implementation and evaluation of a multilingual search pilot in the Europeana digital library", published in the 26th International Conference on Theory and Practice of Digital Libraries (TPDL'22). In that work we implemented a pilot applying query translation to English from the Spanish version of the website in order to surface results that have English metadata associated with them. Dataset and technical report also available at Zenodo: https://doi.org/10.5281/zenodo.6861293 (dataset), https://doi.org/10.5281/zenodo.7123543 (report)
Self-Scattering for Dark Matter with an Excited State
Creators: name: Schutz, Katelin
name: Slatyer, Tracy R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Self-interacting dark matter scenarios have recently attracted much attention, as a possible means to alleviate the tension between N-body simulations and observations of the dark matter distribution on galactic and sub-galactic scales. The presence of internal structure for the dark matter --- for example, a nearly-degenerate state in the spectrum that could decay, or be collisionally excited or de-excited --- has also been proposed as a possible means to address these discrepancies. Such internal structure can be a source of interesting signatures in direct and indirect dark matter searches, for example providing a novel explanation for the 3.5 keV line recently observed in galaxies and galaxy clusters. We analyze a simple model of dark matter self-scattering including a nearly-degenerate excited state, and develop an accurate analytic approximation for the elastic and inelastic s-wave cross sections, which is valid outside the perturbative regime provided the particle velocity is sufficiently low (this condition is also required for the s-wave to dominate over higher partial waves). We anticipate our results will be useful in incorporating inelastic self-scattering into N-body simulations, in order to study the quantitative impact of nearly-degenerate states in the dark matter spectrum on galactic structure and dynamics, and in computing the indirect signatures of multi-state dark matter.
description: 27 pages + 19 pages appendices, 14 figures, Submitted to JCAP. v2 fixes typos, adds three references
Search for a light charged Higgs boson in $t \rightarrow H^{\pm}b$ decays, with $H^{\pm} \rightarrow cb$, in the lepton+jets final state in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: p p: scattering
p p: colliding beams
Higgs particle: charged particle
top: rare decay
top: pair production
Higgs particle: hadronic decay
jet: multiplicity: high
Higgs particle: mass
final state: ((n)jet lepton)
ATLAS
muon
CERN Lab
electron
CERN LHC Coll
kinematics
background
charm: particle identification
bottom: particle identification
neural network
topology
top: branching ratio
Higgs particle: branching ratio
branching ratio: upper limit
statistical analysis
data analysis method
experimental results
top --> Higgs particle bottom
Higgs particle --> charm bottom
13000 GeV-cms

description: A search for a charged Higgs boson, $H^{\pm}$, produced in top-quark decays, $t \rightarrow H^{\pm}b$, is presented. The search targets $H^{\pm}$ decays into a bottom and a charm quark, $H^{\pm} \rightarrow cb$. The analysis focuses on a selection enriched in top-quark pair production, where one top quark decays into a leptonically decaying $W$ boson and a bottom quark, and the other top quark decays into a charged Higgs boson and a bottom quark. This topology leads to a lepton-plus-jets final state, characterised by an isolated electron or muon and at least four jets. The search exploits the high multiplicity of jets containing $b$-hadrons, and deploys a neural network classifier that uses the kinematic differences between the signal and the background. The search uses a dataset of proton-proton collisions collected at a centre-of-mass energy $\sqrt{s}=13$ TeV between 2015 and 2018 with the ATLAS detector at CERN's Large Hadron Collider, amounting to an integrated luminosity of 139~fb$^{-1}$. Observed (expected) 95% confidence-level upper limits between 0.15% (0.09%) and 0.42% (0.25%) are derived for the product of branching fractions $\mathscr{B}(t\rightarrow H^{\pm}b) \times \mathscr{B}(H^{\pm}\rightarrow cb)$ for charged Higgs boson masses between 60 and 160~GeV, assuming the SM production of the top-quark pairs.
Classical and Quantum Polyhedra
Creators: name: Schliemann, John
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum polyhedra constructed from angular momentum operators are the building blocks of space in its quantum description as advocated by Loop Quantum Gravity. Here we extend previous results on the semiclassical properties of quantum polyhedra. Regarding tetrahedra, we compare the results from a canonical quantization of the classical system with a recent wave function based approach to the large-volume sector of the quantum system. Both methods agree in the leading order of the resulting effective operator (given by an harmonic oscillator), while minor differences occur in higher corrections. Perturbative inclusion of such corrections improves the approximation to the eigenstates. Moreover, the comparison of both methods leads also to a full wave function description of the eigenstates of the (square of the) volume operator at negative eigenvalues of large modulus. For the case of general quantum polyhedra described by discrete angular momentum quantum numbers we formulate a set of quantum operators fulfilling in the semiclassical regime the standard commutation relations between momentum and position. Differently from previous formulations, the position variable here is chosen to have dimension of (Planck) length squared which facilitates the identification of quantum corrections. Finally, we provide expressions for the pentahedral volume in terms of Kapovich-Millson variables.
description: 11 pages, 3 figues; comments welcome. Among minor alterations, appendix on the pentahedral volume expressed in terms of Kapovich-Millson variables added. Version to appear in PRD
Accounting policy choice by Australian mining companies : an exploratory study
Creators: name: Stoddart, Ellen K. .
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Experimental constraints and a possible quantum Hall state at $ν=5/2$
Creators: name: Yang, Guang
name: Feldman, D. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Several topological orders have been proposed to explain the quantum Hall plateau at $ν=5/2$. The observation of an upstream neutral mode on the sample edge [Bid et al., Nature (London) 466, 585 (2010)] supports the non-Abelian anti-Pfaffian state. On the other hand, the tunneling experiments [Radu et al., Science 320, 899 (2008); Lin et al., Phys. Rev. B 85, 165321 (2012); Baer et al., arXiv:1405.0428] favor the Halperin 331 state which exhibits no upstream modes. We find a topological order, compatible with the results of both types of experiments. That order allows both finite and zero spin polarizations. It is Abelian but its signatures in Aharonov-Bohm interferometry can be similar to those of the Pfaffian and anti-Pfaffian states.
description: 5+1 pages
Newtonian self-gravitating system in a relativistic huge void universe model
Creators: name: Nishikawa, Ryusuke
name: Nakao, Ken-ichi
name: Yoo, Chul-Moon
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider a test of the Copernican Principle through observations of the large-scale structures, and for this purpose we study the self-gravitating system in a relativistic huge void universe model which does not invoke the Copernican Principle. If we focus on the the weakly self-gravitating and slowly evolving system whose spatial extent is much smaller than the scale of the cosmological horizon in the homogeneous and isotropic background universe model, the cosmological Newtonian approximation is available. Also in the huge void universe model, the same kind of approximation as the cosmological Newtonian approximation is available for the analysis of the perturbations contained in a region whose spatial size is much smaller than the scale of the huge void: the effects of the huge void are taken into account in a perturbative manner by using the Fermi-normal coordinates. By using this approximation, we derive the equations of motion for the weakly self-gravitating perturbations whose elements have relative velocities much smaller than the speed of light, and show the derived equations can be significantly different from those in the homogeneous and isotropic universe model, due to the anisotropic volume expansion in the huge void. We linearize the derived equations of motion and solve them. The solutions show that the behaviors of linear density perturbations are very different from those in the homogeneous and isotropic universe model.
description: 32 pages, 6 figures
Search for pair production of third-generation leptoquarks decaying into a bottom quark and a $\tau$-lepton with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: p p: colliding beams
family: 3
leptoquark: scalar
p p: scattering
leptoquark: mass
tau: particle identification
tau: hadronic decay
leptoquark: branching ratio
ATLAS
leptoquark: pair production
vector
Yang-Mills
CERN LHC Coll
channel cross section: upper limit
mass dependence
leptoquark: mass: lower limit
experimental results
leptoquark --> bottom tau
13000 GeV-cms

description: A search for pair-produced scalar or vector leptoquarks decaying into a $b$-quark and a $\tau$-lepton is presented using the full LHC Run 2 (2015-2018) data sample of 139 fb$^{-1}$ collected with the ATLAS detector in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Events in which at least one $\tau$-lepton decays hadronically are considered, and multivariate discriminants are used to extract the signals. No significant deviations from the Standard Model expectation are observed and 95% confidence-level upper limits on the production cross-section are derived as a function of leptoquark mass and branching ratio into the $\tau$-lepton. For scalar leptoquarks, masses below 1490 GeV are excluded assuming a 100% branching ratio, while for vector leptoquarks the corresponding limit is 1690 GeV (1960 GeV) in the minimal-coupling (Yang-Mills) scenario.
Entanglement dynamics in short and long-range harmonic oscillators
Creators: name: Nezhadhaghighi, M. Ghasemi
name: Rajabpour, M. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the time evolution of the entanglement entropy in the short and long-range coupled harmonic oscillators that have well-defined continuum limit field theories. We first introduce a method to calculate the entanglement evolution in generic coupled harmonic oscillators after quantum quench. Then we study the entanglement evolution after quantum quench in harmonic systems that the couplings decay effectively as $1/r^{d+α}$ with the distance $r$. After quenching the mass from non-zero value to zero we calculate numerically the time evolution of von Neumann and Rényi entropies. We show that for $1
description: 20 pages, 27 figures, v2: a new figure added and some other minor additions
Partially Composite Dark Matter
Creators: name: Asano, Masaki
name: Kitano, Ryuichiro
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In a class of theories where the Higgs field emerges as a pseudo Nambu-Goldstone boson, it is often assumed that interactions to generate the top Yukawa coupling provide the Higgs potential as well. Such a scenario generically requires a little cancellation in the leading contribution to the Higgs potential, and the electroweak scale is generated by the balance between the leading and the subleading contributions. We, instead, consider the possibility that the contribution from the dark matter particle balances against that from the top quark. The thermal relic of the new particle explains the abundance of dark matter in a consistent region of the parameter space, and the direct detection is found to be promising.
description: 16 pages, 2 figures, v2: minor changes, references added
Catching Quenching Galaxies: The Nature of the WISE Infrared Transition Zone
Creators: name: Alatalo, Katherine
name: Cales, Sabrina L.
name: Appleton, Philip N.
name: Kewley, Lisa J.
name: Lacy, Mark
name: Lisenfeld, Ute
name: Nyland, Kristina
name: Rich, Jeffrey A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the discovery of a prominent bifurcation between early-type galaxies and late-type galaxies, in [4.6]-[12] micron colors from the Wide Field Infrared Survey Explorer (WISE). We then use an emission-line diagnostic comparison sample to explore the nature of objects found both within, and near the edges of, this WISE infrared transition zone (IRTZ). We hypothesize that this birfurcation might be due to the presence of hot dust and PAH emission features in late-type galaxies. Using a sample of galaxies selected through the Shocked Poststarburst Galaxy Survey (SPOGS), we are able to identify galaxies with strong Balmer absorption (EW(Hdelta)>5 Angstroms) as well as emission lines inconsistent with star formation (deemed SPOG candidates, or SPOGs*) that lie within the optical green valley. Seyferts and low ionization nuclear emission line regions, whose u-r colors tend to be red, are strongly represented within the IRTZ, whereas SPOGs* tend to sit near the star-forming edge. Although AGN are well-represented in the IRTZ, we argue that the dominant IRTZ population are galaxies that are in late stages of transitioning across the optical green valley, shedding the last of their remnant interstellar media.
description: Accepted to the Astrophysical Journal Letters (7 pages, 4 figures, 1 table)
Constructing local integrals of motion in the many-body localized phase
Creators: name: Chandran, Anushya
name: Kim, Isaac H.
name: Vidal, Guifre
name: Abanin, Dmitry A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many-body localization provides a generic mechanism of ergodicity breaking in quantum systems. In contrast to conventional ergodic systems, many-body localized (MBL) systems are characterized by extensively many local integrals of motion (LIOM), which underlie the absence of transport and thermalization in these systems. Here we report a physically motivated construction of local integrals of motion in the MBL phase. We show that any local operator (e.g., a local particle number or a spin flip operator), evolved with the system's Hamiltonian and averaged over time, becomes a LIOM in the MBL phase. Such operators have a clear physical meaning, describing the response of the MBL system to a local perturbation. In particular, when a local operator represents a density of some globally conserved quantity, the corresponding LIOM describes how this conserved quantity propagates through the MBL phase. Being uniquely defined and experimentally measurable, these LIOMs provide a natural tool for characterizing the properties of the MBL phase, both in experiments and numerical simulations. We demonstrate the latter by numerically constructing an extensive set of LIOMs in the MBL phase of a disordered spin chain model. We show that the resulting LIOMs are quasi-local, and use their decay to extract the localization length and establish the location of the transition between the MBL and ergodic phases.
description: 8 pages, 3 figures
The information content of cash flow data : the Australian evidence
Creators: name: Lor, Eng Min. .
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Motion on Constant Curvature Spaces and Quantization Using Noether Symmetries
Creators: name: Bracken, Paul
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A general approach is presented for quantizing a metric nonlinear system on a manifold of constant curvature. It makes use of a curvature dependent procedure which relies on determining Noether symmetries from the metric. The curvature of the space functions as a constant parameter. For a specific metric which defines the manifold, Lie differentiation of the metric gives these symmetries. A metric is used such that the resulting Schrodinger equation can be solved in terms of hypergeometric functions. This permits the investigation of both the energy spectrum and wave functions exactly for this system.
Statistical Mechanics of Hamiltonian Adaptive Resolution Simulations
Creators: name: Español, Pep
name: Delgado-Buscalioni, Rafael
name: Everaers, Ralf
name: Potestio, Raffaelo
name: Donadio, Davide
name: Kremer, Kurt
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Adaptive Resolution Scheme (AdResS) is a hybrid scheme that allows one to treat a molecular system with different levels of resolution depending on the location of the molecules. The construction of a Hamiltonian based on the this idea (H-AdResS) allows one to formulate the usual tools of ensembles and statistical mechanics. We present a number of exact and approximate results that provide a statistical mechanics foundation for this simulation method. We also present simulation results that illustrate the theory.
On the $L_p$ discrepancy of two-dimensional folded Hammersley point sets
Creators: name: Goda, Takashi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We give an explicit construction of two-dimensional point sets whose $L_p$ discrepancy is of best possible order for all $1\le p\le \infty$. It is provided by folding Hammersley point sets in base $b$ by means of the $b$-adic baker's transformation which has been introduced by Hickernell (2002) for $b=2$ and Goda, Suzuki and Yoshiki (2013) for arbitrary $b\in \mathbb{N}$, $b\ge 2$. We prove that both the minimum Niederreiter-Rosenbloom-Tsfasman weight and the minimum Dick weight of folded Hammersley point sets are large enough to achieve the best possible order of $L_p$ discrepancy for all $1\le p\le \infty$.
Leptokurtic stock distributions : implications for option valuation
Creators: name: Chan, Howard W. H. .
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Short cycle pulse sequence for dynamical decoupling of local fields and dipole-dipole interactions
Creators: name: Moiseev, S. A.
name: Skrebnev, V. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new pulse sequence for dynamical averaging of the dipole-dipole interactions and inhomogeneities of the magnetic fields in the nuclear spin system. The sequence contains a short cycle of the periodic resonant pulse excitation that offers new possibilities for implementing the long-lived multi-qubit quantum memory on the condensed spin ensembles that are so important for construction of universal quantum computer and long-distance quantum communications.
description: 6 pages, 1 figure
Ex-dividend day behaviour of call option prices in the Australian options market
Creators: name: Oliver, Barry.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.