cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Superconductivity in Ce-based cage compounds
Creators: name: Panday, Suman Raj
name: Dzero, Maxim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Cerium-based ternary compounds CeNi$_2$Cd$_{20}$ and CePd$_2$Cd$_{20}$ do not exhibit long-range order down to millikelvin temperature range. Given the large separation between cerium ions which significantly reduces the superexchange interactions and vanishingly small RKKY interaction, here we show that nodal superconductivity mediated by the valence fluctuations must be a ground state in these materials. We propose that the critical temperature for the superconducting transition can be significantly increased by applying hydrostatic pressure. We employ an extended periodic Anderson lattice model which includes the long-range Coulomb interactions between the itinerant electrons as well as the local Coulomb interaction between the predominantly localized and itinerant electrons to compute a critical temperature of the superconducting transition. Using the slave-boson approach we show that fluctuations mediated by the repulsive electron-electron interactions lead to the emergence of d-wave superconductivity.
description: 9 pages, 4 figures
The Catchment Area of Groomed Jets at NNLL
Creators: name: Pathak, Aditya
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Groomed jet observables have a dynamical catchment area which plays a key role in determining the leading nonperturbative power corrections and the impact of the underlying event. Based on field-theoretic arguments, certain moments of the groomed jet radius $R_g$ capture the entirety of the kinematic and grooming parameter dependence of these effects. These moments can be computed perturbatively in the soft drop operator expansion region where these corrections are small, but yet significant to be relevant for precision physics. A precise determination of these moments is thus crucial to faithfully isolate the universal contributions of hadronization and the underlying event. Building on a previously developed effective field theory framework for the doubly differential soft drop groomed jet mass and groomed jet radius measurement, we present here a calculation of these moments at next-to-next-to-leading-logarithmic (NNLL) accuracy including matching into the plain jet mass region. We compare our predictions for these moments against parton-shower Monte Carlo simulations and find good agreement. These results have applications for precision physics with soft drop jet mass such as determination of the strong coupling constant and the top quark mass and for improving hadronization models.
description: 73 pages + appendices, 25 figures; Updated to journal version -- added additional section on comparison to previous results + improved restructuring of sections
title: WaMSTeC Industry Guidelines for hydrometric monitoring revisions update for groundwater
Creators: name: H., Carey
name: H., Carey
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EFTF – Exploring for the Future
subject: National Groundwater Systems
subject: Water Monitoring and Standardisation Technical Committee
subject: WaMSTeC
subject: update to national industry guidelines
subject: hydrometric monitoring
subject: Groundwater hydrology
subject: Published_External

description: This was the third of five presentations held on 31 July 2023 as part of the National Groundwater Systems Workshop - WaMSTeC: Water Monitoring and Standardisation Technical Committee National Industry Guidelines for hydrometric monitoring WaMSTeC GUIDELINE REVISIONS UPDATE FOR GROUNDWATER COMPONENTS: GROUNDWATER SUBCOMMITTEE
A Thematic Analysis of Ang Bayan Denunciations of the United States of America and the People’s Republic of China from 2015 to the Present
Creators: name: Hopkinson, Joseph Aneurin
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Communism
subject: Maoism
subject: Marxism-Leninism-Maoism
subject: Ang Bayan
subject: CPP/NPA
subject: Communist Party of the Philippines
subject: New People's Army
subject: Philippines
subject: Benigno Aquino
subject: Rodrigo Duterte
subject: Bongbong Marcos
subject: Propaganda

description: Ang Bayan, the in-house magazine of the Communist Party of the Philippines/New People's Army, has over the years harshly criticized both the USA and the PRC. This paper analyses the variations in theme and frequency of those denunciations, from the rise of the Duterte regime to the present day.
“That was the chance we had” On ritual farewell events for children who die before being born
Creators: name: Kristvik, Ellen
Publisher: name: Nordic Journal of Practical Theology
Year: 2023

description: The article was first published in Norwegian, in Tidsskrift for praktisk teologi/Nordic Journal of Practical Theology, vol. 40/1, 2023, pp. 20-35. Original title: "Det var den sjansen vi hadde" - Om rituelle avskjedsmarkeringar for barn som døyr før dei blir fødde. DOI: 10.48626/tpt.v40i1.5524 How to bid farewell to a child never known? In this article I discuss challenges connected to ritual farewell events for the stillborn. Stillborn children have been excluded from traditional funerals and burials in many cultures. Until a few decades ago, this was also the case in Norway. The Norwegian Church has now stated the right for everyone to have their own grave, and chaplains assist bereaved parents in farewell ceremonies. Based on interview material with bereaved parents and participant observation from farewell events, this article seeks to highlight the question of ritual farewells from bereaved parents’ point of view. The need for individual adjustment stands out as a compelling concern. Parents underlined the importance of their own preferences being heeded to, but also the need for information about actual possibilities. The availability of proficient counselling, open to the complexity of the issue involved, was found to be crucial.
description: Nordic Journal of Practical Theology, Vol 40 Nr. 1 (2023): Tidsskrift for praktisk teologi
In-focus wavefront sensing using non-redundant mask-induced pupil diversity
Creators: name: Greenbaum, Alexandra
name: Sivaramakrishnan, Anand
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Wavefront estimation using in-focus image data is critical to many applications. This data is invariant to a sign flip with complex conjugation of the complex amplitude in the pupil, making for a non-unique solution. Information from an in-focus image taken through a non-redundant pupil mask (NRM) can break this ambiguity, enabling the true aberration to be determined. We demonstrate this by priming a full pupil Gerchberg-Saxton phase retrieval with NRM fringe phase information. We apply our method to measure simulated aberrations on the segmented James Webb Space Telescope (JWST) mirror using full pupil and NRM data from its Near Infrared Imager and Slitless Spectrograph (NIRISS).
description: 16 pages, 11 figures. \c{opyright} 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-14-15506
Dissipative Entanglement of Quantum Spin Fluctuations
Creators: name: Benatti, Fabio
name: Carollo, Federico
name: Floreanini, Roberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider two non-interacting infinite quantum spin chains immersed in a common thermal environment and undergoing a local dissipative dynamics of Lindblad type. We study the time evolution of collective mesoscopic quantum spin fluctuations that, unlike macroscopic mean-field observables, retain a quantum character in the thermodynamical limit. We show that the microscopic dissipative dynamics is able to entangle these mesoscopic degrees of freedom, through a purely mixing mechanism. Further, the behaviour of the dissipatively generated quantum correlations between the two chains is studied as a function of temperature and dissipation strength.
description: 54 pages, 8 figures
Quantum Heat Engines and the Generalized Uncertainty Principle
Creators: name: Blado, Gardo
name: Nguyen, Jonathan
name: Renteria, Giovani
name: Gay, Skylar
name: Mortimer, Bryce
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effects of the generalized uncertainty principle (GUP) on the efficiency of quantum heat engines based on a particle in an infinite square well using the partition function approach. In particular, we study the Carnot and Otto heat engines. For the system we used, the GUP-corrected efficiencies turned out to be lower than efficiencies without the GUP effects. However, as expected, GUP effects increase as the temperature of the cold heat bath decreases and as the width of the potential well decreases.
description: 20 pages, 6 figures
Ultra-Low Dissipation Superfluid Micromechanical Resonator
Creators: name: Souris, Fabien
name: Rojas, Xavier
name: Kim, Paul H.
name: Davis, John P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Micro and nanomechanical resonators with ultra-low dissipation have great potential as useful quantum resources. The superfluid micromechanical resonators presented here possess several advantageous characteristics: straightforward thermalization, dissipationless flow, and in situ tunability. We identify and quantitatively model the various dissipation mechanisms in two resonators, one fabricated from borosilicate glass and one from single crystal quartz. As the resonators are cryogenically cooled into the superfluid state, the damping from thermal effects and from the normal fluid component are strongly suppressed. At our lowest temperatures, damping is limited solely by internal dissipation in the substrate materials, and reach quality factors up to 913,000 at 13 mK. By lifting this limitation through substrate material choice and resonator design, modelling suggests that the resonators should reach quality factors as high as 10$^8$ at 100 mK, putting this architecture in an ideal position to harness mechanical quantum effects.
description: 25 pages, 12 figures, 3 tables
Superconducting fluctuations and charge-4$e$ plaquette state at strong coupling
Creators: name: Qin, Qiong
name: Dong, Jian-Jun
name: Sheng, Yutao
name: Huang, Dongchen
name: Yang, Yi-feng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We apply the static auxiliary field Monte Carlo approach to study phase correlations of the pairing fields in a microscopic model with spin-singlet pairing interaction. We find that the short- and long-range phase correlations are well captured by the phase mutual information, which allows us to construct a theoretical phase diagram containing the uniform $d$-wave superconducting region, the phase fluctuating region, the local pairing region, and the disordered region. We show that the gradual development of phase coherence has a number of consequences on spectroscopic measurements, such as the development of the Fermi arc and the anisotropy in the angle-resolved spectra, scattering rate, entropy, specific heat, and quasiparticle dispersion, in good agreement with experimental observations. For strong coupling, our Monte Carlo simulation reveals an unexpected charge-4$e$ plaquette state with $d$-wave bonds, which competes with the uniform $d$-wave superconductivity and exhibits a U-shaped density of states.
Exploring nonnormality in magnetohydrodynamic rotating shear flows: application to astrophysical accretion disks
Creators: name: Bhatia, Tanayveer Singh
name: Mukhopadhyay, Banibrata
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The emergence of turbulence in shear flows is a well-investigated field. Yet, one of major issues is the apparent contradiction between linear stability analysis quoting a flow to be stable and results from experiments and simulations proving it to be otherwise. There is some success, in particular in astrophysical systems, based on Magneto-Rotational Instability (MRI). However, MRI requires the system to be weakly magnetized, which is not a feature of general magnetohydrodynamic (MHD) flows. Nevertheless, linear perturbations of such flows are nonnormal in nature which argues for an origin of nonlinearity therein. The idea is, nonnormal perturbations could produce huge transient energy growth (TEG), which may lead to non-linearity and further turbulence. However, so far, nonnormal effects in shear flows have not been explored much in the presence of magnetic fields. Here, we consider the perturbed visco-resistive incompressible MHD shear flows with rotation in general. Basically we consider the magnetized version of Orr-Sommerfeld and Squire equations and their magnetic analogues in the presence of Coriolis effect. We solve the equations using a pseudospectral eigenvalue approach. We investigate the possible emergence of instability and large TEG in three different flows: the Keplerian, constant angular momentum and plane Couette flows. We show that, above a certain value of magnetic field, instability and TEG both stop occurring. We also show that TEG is maximum near the regions of instability in the wave number space for a given magnetic field and Reynolds number. Rotating shear flows are ubiquitous in astrophysics, especially accretion disks, where molecular viscosity is too low to account for observed data. The primary accepted cause of energy-momentum transport therein is turbulent viscosity. Hence, these results would have important implications in astrophysics.
description: 16 pages including 12 figures; accepted for publication in Physical Review Fluids
A Lighter QCD Axion from Anarchy
Creators: name: Elahi, Fatemeh
name: Elor, Gilly
name: Kivel, Alexey
name: Laux, Julien
name: Najjari, Saereh
name: Yu, Felix
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce the Anarchic Axion, a class of axion models which solves the Strong CP problem within current nEDM constraints with a lighter than usual QCD axion, thus populating new parameter space that ongoing and future experiments target. The Anarchic Axion is driven light by a soft breaking of the Peccei-Quinn symmetry, which also predicts a residual neutron electric dipole moment. We introduce a novel measure to quantify the tuning required for large deviations from the usual QCD axion band. In addition to motivating searches for unusually light axions, this work establishes a new target for axion effective field theory.
description: 5+2 pages. 3 figures. 1 table. v2: minor comments added, version published in Phys. Rev. D Letters
Determination of the strong coupling constant from transverse energy$-$energy correlations in multijet events at $\sqrt{s} = 13$ TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of transverse energy$-$energy correlations and their associated azimuthal asymmetries in multijet events are presented. The analysis is performed using a data sample corresponding to 139 $\mbox{fb\(^{-1}\)}$ of proton$-$proton collisions at a centre-of-mass energy of $\sqrt{s} = 13$ TeV, collected with the ATLAS detector at the Large Hadron Collider. The measurements are presented in bins of the scalar sum of the transverse momenta of the two leading jets and unfolded to particle level. They are then compared to next-to-next-to-leading-order perturbative QCD calculations for the first time, which feature a significant reduction in the theoretical uncertainties estimated using variations of the renormalisation and factorisation scales. The agreement between data and theory is good, thus providing a precision test of QCD at large momentum transfers $Q$. The strong coupling constant $α_s$ is extracted differentially as a function of $Q$, showing a good agreement with the renormalisation group equation and with previous analyses. A simultaneous fit to all transverse energy$-$energy correlation distributions across different kinematic regions yields a value of $α_\mathrm{s}(m_Z) = 0.1175 \pm 0.0006 \mbox{ (exp.)} ^{+0.0034}_{-0.0017} \mbox{ (theo.)}$, while the global fit to the asymmetry distributions yields $α_{\mathrm{s}}(m_Z) = 0.1185 \pm 0.0009 \mbox{ (exp.)} ^{+0.0025}_{-0.0012} \mbox{ (theo.)}$.
description: Comments: 32 pages in total, 13 figures, 5 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2018-51
The Single Mirror Small Sized Telescope For The Cherenkov Telescope Array
Creators: name: Heller, M.
name: Schioppa, E. jr
name: Porcelli, A.
name: Pujadas, I. Troyano
name: Zietara, K.
name: della Volpe, D.
name: Montaruli, T.
name: Cadoux, F.
name: Favre, Y.
name: Aguilar, J. A.
name: Christov, A.
name: Prandini, E.
name: Rajda, P.
name: Rameez, M.
name: Bilnik, W.
name: Blocki, J.
name: Bogacz, L.
name: Borkowski, J.
name: Bulik, T.
name: Frankowski, A.
name: Grudzinska, M.
name: Idzkowski, B.
name: Jamrozy, M.
name: Janiak, M.
name: Kasperek, J.
name: Lalik, K.
name: Lyard, E.
name: Mach, E.
name: Mandat, D.
name: Marszalek, A.
name: Miranda, L. D. Medina
name: Michalowski, J.
name: Moderski, R.
name: Neronov, A.
name: Niemiec, J.
name: Ostrowski, M.
name: Pasko, P.
name: Pech, M.
name: Schovanek, P.
name: Seweryn, K.
name: Sliusar, V.
name: Skowron, K.
name: Stawarz, L.
name: Stodulska, M.
name: Stodulski, M.
name: Walter, R.
name: Wiecek, M.
name: Zagdanski, A.
name: consortium, the CTA
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Small Size Telescope with Single Mirror (SST-1M) is one of the proposed types of Small Size Telescopes (SST) for the Cherenkov Telescope Array (CTA). About 70 SST telescopes will be part the CTA southern array which will also include Medium Sized Telescopes (MST) in its threshold configuration. Optimized for the detection of gamma rays in the energy range from 5 TeV to 300 TeV, the SST-1M uses a Davies-Cotton optics with a 4 m dish diameter with a field of view of 9 degrees. The Cherenkov light resulting from the interaction of the gamma-rays in the atmosphere is focused onto a 88 cm side-to-side hexagonal photo-detection plane. The latter is composed of 1296 hollow light guides coupled to large area hexagonal silicon photomultipliers (SiPM). The SiPM readout is fully digital readout as for the trigger system. The compact and lightweight design of the SST-1M camera offers very high performance ideal for gamma-ray observation requirement. In this contribution, the concept, design, performance and status of the first telescope prototype are presented.
description: 7 pages, figure 6, Conference Gamma 2016 in Heildelberg
Reinjection as a solution to greenhouse gas emissions from high emitting geothermal power plants in New Zealand
Creators: name: Choudhary, Anu
name: Burnell, John
name: Hinkley, Jim
name: Elias, Arun
name: Rayudu, Ramesh
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: Uncategorized

description: The purpose of this paper is to discuss emissions from geothermal power plants in New Zealand. Geothermal energy has been considered as a clean and sustainable source of energy. However, the geothermal fluid also contains the greenhouse gases which are emitted to the atmosphere after the electricity generation process. Releasing the gases to the environment after the electricity generation process is neither environmentally suitable and may not be economically feasible if the price of carbon increases. These emissions have become an issue of major concern with the draft advice of the climate change commission recommending that high emitting power stations be closed by 2030. Reinjection of the fluid and the gases back to the reservoir or using CO2 for industrial and agriculture purpose seems to be a viable solution towards achieving a zero-carbon emission target. Reinjection of separated brine is routinely carried out and plays an important role in the geothermal system as it provides pressure support which acts as a barrier to cold water recharge to the reservoir and reduces environmental impacts by deposing water back to the reservoir. Though reinjection provides a feasible solution to the water disposal problem, it can also harm to the reservoir by creating problem such as thermal breakthrough. Therefore, we need well planned and modelled strategies for reinjection systems, that are site-specific as the geologic setting differs from site to site. This paper will provide a qualitative understanding of the various reinjection strategies in New Zealand and the response of the geothermal system to those strategies. If the CO2 gas from a geothermal power plant is reinjected into the reservoir there may be impacts on surface features which may impact economic and cultural factors. This work will outline a study that will be undertaken to optimize the strategy for reinjecting CO2 gas into a geothermal reservoir. The optimization will consider the impacts on power generation, surface features and other factors. Index Terms—Greenhouse gas emissions, geothermal, reservoir, gases, reinjection, emissions.
The different origins of high- and low-ionization broad emission lines revealed by gravitational microlensing in the Einstein cross
Creators: name: Braibant, Lorraine
name: Hutsemékers, Damien
name: Sluse, Dominique
name: Anguita, Timo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the kinematics and ionization structure of the broad emission line region of the gravitationally lensed quasar QSO2237+0305 (the Einstein cross) using differential microlensing in the high- and low-ionization broad emission lines. We combine visible and near-infrared spectra of the four images of the lensed quasar and detect a large-amplitude microlensing effect distorting the high-ionization CIV and low-ionization H$α$ line profiles in image A. While microlensing only magnifies the red wing of the Balmer line, it symmetrically magnifies the wings of the CIV emission line. Given that the same microlensing pattern magnifies both the high- and low-ionization broad emission line regions, these dissimilar distortions of the line profiles suggest that the high- and low-ionization regions are governed by different kinematics. Since this quasar is likely viewed at intermediate inclination, we argue that the differential magnification of the blue and red wings of H$α$ favors a flattened, virialized, low-ionization region whereas the symmetric microlensing effect measured in CIV can be reproduced by an emission line formed in a polar wind, without the need of fine-tuned caustic configurations.
description: 11 pages, 4 figures, A&A
Set-Theoretic and Type-Theoretic Ordinals Coincide
Creators: name: de Jong, Tom
name: Kraus, Nicolai
name: Forsberg, Fredrik Nordvall
name: Xu, Chuangjie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In constructive set theory, an ordinal is a hereditarily transitive set. In homotopy type theory (HoTT), an ordinal is a type with a transitive, wellfounded, and extensional binary relation. We show that the two definitions are equivalent if we use (the HoTT refinement of) Aczel's interpretation of constructive set theory into type theory. Following this, we generalize the notion of a type-theoretic ordinal to capture all sets in Aczel's interpretation rather than only the ordinals. This leads to a natural class of ordered structures which contains the type-theoretic ordinals and realizes the higher inductive interpretation of set theory. All our results are formalized in Agda.
description: v2: Minor changes. To appear at LICS'23. v3: Acknowledgments updated
title: Detailed Groundwater Science Inventory Geology, hydrogeology and groundwater systems in the Kati Thanda-Lake Eyre Basin
Creators: name: H., Carey
name: T., Evans
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EFTF – Exploring for the Future
subject: National Groundwater Systems
subject: groundwater hydrology
subject: Detailed groundwater inventory
subject: National Hydrogeological Inventory
subject: kati thanda-Lake eyre basin
subject: Lake Eyre Basin
subject: Groundwater hydrology
subject: Published_External

description: This was the fourth of five presentations held on 31 July 2023 as part of the National Groundwater Systems Workshop - Detailed Groundwater Science Inventory Geology, hydrogeology and groundwater systems in the Kati Thanda-Lake Eyre Basin.
Analysis of the impact of the reinjection of gases on the mass flow rate from production wells at varying reservoir conditions
Creators: name: Choudhary, Anu
name: Burnell, John
name: Rayudu, Ramesh
name: Hinkley, Jim
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: Uncategorized

description: Greenhouse gas emissions from geothermal power plants are a barrier to the growth of geothermal energy at present and in the future. The discharge of the gases associated with the electricity generation process from geothermal fluids to the atmosphere contradicts New Zealand's target to achieve net-zero emissions by 2050. These gases are dominated by carbon dioxide. Reinjecting the gases back into the reservoir by dissolving them in the separated brine could be one way of reducing emissions from the geothermal electricity generation process. Besides reducing greenhouse gas emissions, reinjection may help in mitigating silica scaling problems by making the reservoir fluids more acidic. This helps in the dissolution of minerals, which further helps in improving the permeability of the reservoir and contributes to variation in output from the production well. This paper discusses an analysis of the impact of the concentration of gases present in the reservoir on the mass flow rate from the production well. This is a result of changes in the thermodynamic properties of the fluid present in the reservoir. The analysis of the main parameters that contribute to the predicted mass flows will be presented. Well flows are estimated from production wells over the range of conditions found in New Zealand's geothermal production fields. It demonstrates the impact of reinjection of gases on different types of geothermal reservoirs through changes in mass flow rate from the production well.
Spin-Polarized Surface Resonances Accompanying Topological Surface State Formation
Creators: name: Jozwiak, Chris
name: Sobota, Jonathan A.
name: Gotlieb, Kenneth
name: Kemper, Alexander F.
name: Rotundu, Costel R.
name: Birgeneau, Robert J.
name: Hussain, Zahid
name: Lee, Dung-Hai
name: Shen, Zhi-Xun
name: Lanzara, Alessandra
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Topological insulators host spin-polarized surface states born out of the energetic inversion of bulk bands driven by the spin-orbit interaction. Here we discover previously unidentified consequences of band-inversion on the surface electronic structure of the topological insulator Bi$_2$Se$_3$. By performing simultaneous spin, time, and angle-resolved photoemission spectroscopy, we map the spin-polarized unoccupied electronic structure and identify a surface resonance which is distinct from the topological surface state, yet shares a similar spin- orbital texture with opposite orientation. Its momentum- dependence and spin texture imply an intimate connection with the topological surface state. Calculations show these two distinct states can emerge from trivial Rashba-like states that change topology through the spin-orbit-induced band inversion. This work thus provides a compelling view of the coevolution of surface states through a topological phase transition, enabled by the unique capability of directly measuring the spin-polarized unoccupied band structure.
title: Towards developing a 3D hydrogeological framework for Australia.
Creators: name: H., Carey
name: N., Rollet
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EFTF – Exploring for the Future
subject: National Groundwater Systems
subject: groundwater hydrology
subject: groundwater system
subject: hydrogeology
subject: hydrogeology framework
subject: chronostratigraphic
subject: aquifers
subject: Groundwater hydrology
subject: Published_External

description: This was the last of five presentations held on 31 July 2023 as part of the National Groundwater Systems Workshop. Towards developing a 3D hydrogeological framework for Australia: A common chronostratigraphic framework for aquifers
Disk reflection and a possible disk wind during a soft X-ray state in the neutron star low-mass X-ray binary 1RXS J180408.9-342058
Creators: name: Degenaar, N.
name: Altamirano, D.
name: Parker, M.
name: Miller-Jones, J. C. A.
name: Miller, J. M.
name: Heinke, C. O.
name: Wijnands, R.
name: Ludlam, R.
name: Parikh, A.
name: Hessels, J. W. T.
name: Gusinskaia, N.
name: Deller, A. T.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: 1RXS J180408.9-342058 is a transient neutron star low-mass X-ray binary that exhibited a bright accretion outburst in 2015. We present Nustar, Swift, and Chandra observations obtained around the peak of this outburst. The source was in a soft X-ray spectral state and displayed an X-ray luminosity of Lx~(2-3)E37 (D/5.8 kpc)^2 erg cm-2 (0.5-10 keV). The Nustar data reveal a broad Fe-K emission line that we model as relativistically broadened reflection to constrain the accretion geometry. We found that the accretion disk is viewed at an inclination of i~27-35 degrees and extended close to the neutron star, down to Rin~5-7.5 gravitational radii (~11-17 km). This inner disk radius suggests that the neutron star magnetic field strength is B<2E8 G. We find a narrow absorption line in the Chandra/HEG data at an energy of ~7.64 keV with a significance of ~4.8 sigma. This feature could correspond to blue-shifted Fe xxvi and arise from an accretion disk wind, which would imply an outflow velocity of v~0.086c (~25800 km s-1). However, this would be extreme for an X-ray binary and it is unclear if a disk wind should be visible at the low inclination angle that we infer from our reflection analysis. Finally, we discuss how the X-ray and optical properties of 1RXS J180408.9-342058 are consistent with a relatively small (Porb<3 hr) binary orbit.
description: 10 pages, 3 tables, 5 figures, accepted for publication in MNRAS
Greenhouse gas emissions from geothermal powerplants in New Zealand: Is reinjection of gases a solution?
Creators: name: Choudhary, Anu
name: Burnell, J
name: Rayudu, Ramesh
name: Hinkley, James
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: Uncategorized

description: The primary purpose of this paper is to discuss the greenhouse gas emissions from geothermal power plants in New Zealand. Geothermal energy has been considered a clean, economical, environmentally friendly, and sustainable source of energy. However, emission from geothermal power plants is a barrier to the growth of geothermal in the present and the future. The emissions have become an issue of primary concern after the report presented by the climate change commission recommending the closing of high greenhouse gas emitting geothermal power plants by 2030. Also, to reach New Zealand targets of achieving net-zero emissions by 2050, the discharge of gases to the atmosphere is to be reduced. The reinjection of separated brine plays an important role in the geothermal system. It provides pressure support that acts as a barrier to cold water recharge and reduces environmental impacts by deposing water back to the reservoir. Reinjection of gases could show different behaviour depending upon the reservoir conditions. This paper gives an outline of the use of geothermal energy for electricity production. It also shows the impact of gases on the flow rate from the well for a single-phase liquid dominated reservoir which showed an increase in flow rate from the well when the gases are present in the reservoir.
Inclusive-photon production and its dependence on photon isolation in $pp$ collisions at $\sqrt s=13$ TeV using 139 fb$^{-1}$ of ATLAS data
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of differential cross sections are presented for inclusive isolated-photon production in $pp$ collisions at a centre-of-mass energy of 13 TeV provided by the LHC and using 139 fb$^{-1}$ of data recorded by the ATLAS experiment. The cross sections are measured as functions of the photon transverse energy in different regions of photon pseudorapidity. The photons are required to be isolated by means of a fixed-cone method with two different cone radii. The dependence of the inclusive-photon production on the photon isolation is investigated by measuring the fiducial cross sections as functions of the isolation-cone radius and the ratios of the differential cross sections with different radii in different regions of photon pseudorapidity. The results presented in this paper constitute an improvement with respect to those published by ATLAS earlier: the measurements are provided for different isolation radii and with a more granular segmentation in photon pseudorapidity that can be exploited in improving the determination of the proton parton distribution functions. These improvements provide a more in-depth test of the theoretical predictions. Next-to-leading-order QCD predictions from JETPHOX and SHERPA and next-to-next-to-leading-order QCD predictions from NNLOJET are compared to the measurements, using several parameterisations of the proton parton distribution functions. The measured cross sections are well described by the fixed-order QCD predictions within the experimental and theoretical uncertainties in most of the investigated phase-space region.
description: 69 pages in total, author list starting page 52, 21 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2018-39/
Teacher Knowledge Sharing and Reflection as Predictors of Teacher Professional Development A Case of Iranian TEFL Faculty Members
Creators: name: Farahian, Majid
Publisher: name: figshare
Year: 2023
Subjects: English as a second language

description: Despite the accumulated body of research on teachers’ professional development few have offered a relationship between professional development and knowledge sharing or reflective practice. We investigated whether Iranian Teaching English as a foreign language (TEFL) teachers’ reflective teaching and their knowledge sharing can predict their professional success. To answer the research questions a quantitative approach was utilized. Then, 264 faculty members through available sampling were recruited using three questionnaires, namely reflective teaching measurement scale by Akbari et al. (System, 38(2): 211–227, 2010), teacher professional development scale by Soodmand Afshar and Ghasemi (J Teach Lang Skills 37: 169–210, 2018), and Teachers’ knowledge sharing behavior by Ramayah et al. (Eval Rev 38(2): 1–28, 2014). Findings showed that knowledge sharing has a significant relationship with professional development (P < 0.001). In addition, teachers’ reflective practice has a significant relationship with professional development (P < 0.001). Based on the findings we suggest that TEFL teachers should promote their knowledge sharing and reflection to improve their professional development.
Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper presents a measurement of the double-differential cross section for the Drell-Yan $Z/γ^{*} \rightarrow \ell^{+} \ell^{-}$ and photon-induced $γγ\rightarrow \ell^{+} \ell^{-}$ processes where $\ell$ is an electron or muon. The measurement is performed for invariant masses of the lepton pairs, $m_{\ell\ell}$, between 116 GeV and 1500 GeV, using a sample of 20.3 fb$^{-1}$ of pp collisions data at centre-of-mass energy of $\sqrt{s}$ = 8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented double differentially in invariant mass and absolute dilepton rapidity as well as in invariant mass and absolute pseudorapidity separation of the lepton pair. The single-differential cross section as a function of $m_{\ell\ell}$ is also reported. The electron and muon channel measurements are combined and a total experimental precision of better than 1% is achieved at low $m_{\ell\ell}$. A comparison to next-to-next-to-leading order perturbative QCD predictions using several recent parton distribution functions and including next-to-leading order electroweak effects indicates the potential of the data to constrain parton distribution functions. In particular, a large impact of the data on the photon PDF is demonstrated.
description: 43 pages plus author list + cover pages (61 pages total), 13 figures, 11 tables, submitted to JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-06/
Towards Noncommutative Topological Quantum Field Theory: Tangential Hodge-Witten cohomology
Creators: name: Zois, Ioannis P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present a method to develop a Hodge theory for tangential cohomology of foliations by mimicing Witten's approach to ordinary Morse theory by perturbations of the Laplacian
description: 4 pages, references addded. arXiv admin note: text overlap with arXiv:1401.4080
Self-Destructing Spiral Waves: Global Simulations of a Spiral Wave Instability in Accretion Disks
Creators: name: Bae, Jaehan
name: Nelson, Richard P.
name: Hartmann, Lee
name: Richard, Samuel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present results from a suite of three-dimensional global hydrodynamic simulations which show that spiral density waves propagating in circumstellar disks are unstable to the growth of a parametric instability that leads to break-down of the flow into turbulence. This spiral wave instability (SWI) arises from a resonant interaction between pairs of inertial waves, or inertial-gravity waves, and the background spiral wave. The development of the instability in the linear regime involves the growth of a broad spectrum of inertial modes, with growth rates on the order of the orbital time, and results in a nonlinear saturated state in which turbulent velocity perturbations are of a similar magnitude to those induced by the spiral wave. The turbulence induces angular momentum transport, and vertical mixing, at a rate that depends locally on the amplitude of the spiral wave (we obtain a stress parameter $α\sim 5 \times 10^{-4}$ in our reference model). The instability is found to operate in a wide-range of disk models, including those with isothermal or adiabatic equations of state, and in viscous disks where the dimensionless kinematic viscosity $ν\le 10^{-5}$. This robustness suggests that the instability will have applications to a broad range of astrophysical disk-related phenomena, including those in close binary systems, planets embedded in protoplanetary disks (including Jupiter in our own Solar System) and FU Orionis outburst models. Further work is required to determine the nature of the instability, and to evaluate its observational consequences, in physically more complete disk models than we have considered in this paper.
description: Accepted for publication in ApJ, 22 pages, 22 figures, 2 tables, some figures are reduced in size to meet the arxiv requirement
Braking Index of Isolated Pulsars
Creators: name: Hamil, Oliver Q.
name: Stone, Jirina R.
name: Urbanec, Martin
name: Urbancova, Gabriela
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Isolated pulsars are rotating neutron stars with accurately measured angular velocities $Ω$, and their time derivatives that show unambiguously that the pulsars are slowing down. The commonly accepted view is that it arises through emission of magnetic dipole radiation (MDR) from a rotating magnetized body. The calculated energy loss by a rotating pulsar with a constant moment of inertia is assumed proportional to a model dependent power of $Ω$. This relation leads to the power law $\dotΩ$ = -K $Ω^{\rm n}$ where $n$ is called the braking index. The MDR model predicts $n$ exactly equal to 3. Selected observations of isolated pulsars provide rather precise values of $n$, individually accurate to a few percent or better, in the range 1$
description: PRD preprint; 10 figures, 3 tables
“To promote some publick Good, by the Joint Endeavours of a Number of People” : hereditary societies in Philadelphia and Charleston, 1740-1810
Creators: name: Lott, Rebecca Ann
Publisher: name: University of St Andrews
Year: 2022
Subjects: American Revolutionary War
Colonial North America
Clubs
18th century
Associations
Charities
Charleston
Philadelphia
St. Andrew's Society
St. George's Society
German Friendly Society
German Society
Migration
Ethnicity
Scottish diaspora
English diaspora
German diaspora
Cultural Identity
Charity
Sociability

description: This thesis focuses on the English, German, and Scottish societies in Philadelphia and Charleston from the 1740s until the 1810s. It argues the significance of early American charitable organizations in maintaining and perpetuating social structure and social morals through uncertain, volatile circumstances. To do so, it employs a comparative focus to consider the roles of ethnicity and region and explores continuities by tying together research on the colonial, revolutionary, and early republic periods. During the late colonial period, American hereditary societies, while being a product of and a response to their local environment, inherited their institutional structure and their views on poverty from European charitable and associational traditions. These societies fulfilled dual roles of sociability and charity and thereby supported and furthered social and moral norms by regulating who was deserving of membership or assistance. In the face of wartime disruption, the societies worked to provide relief while grappling with the intersection of their hereditary and political identities. Following the war, the societies fostered reconciliation by encouraging the reintegration of their membership and by providing continuity of their activities from before the war. In the early republic, the societies retained their hereditary identities while expressing their new patriotism through encouraging local state-building. In doing so, they supported government initiatives as well as founded their own institutions for education and healthcare. Just as they had done prior to the war, the societies’ activities worked to create normality, supported those they deemed deserving, and perpetuated their social expectations and values.
Statistical reconstruction of pulse shapes from pulse streams
Creators: name: Rupniewski, Marek W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 94A12, 94A20

description: A short sample sequence of a finite-length pulse signal allows for its reconstruction only if the signal has a sparse representation in some basis. The recurrence of the pulse allows for a statistical approach to its reconstruction. We propose a novel method for this task. It is based on the distribution of short sample sequences treated as points which lie along a curve in a low-dimensional Euclidean space. We prove that the probability distribution of the points along this curve determines the underlying pulse signal uniquely. Based on this discovery, we propose an algorithm for pulse estimation from a finite number of short sequences of pulse-stream samples.
Nuclear and Hybrid Equations of State in Light of the Low-Mass Compact Star in HESS J1731-347
Creators: name: Brodie, Liam
name: Haber, Alexander
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We sample over $500$ relativistic mean-field theories constrained by chiral effective field theory and properties of isospin-symmetric nuclear matter and test them against known stellar structure constraints. This includes a recent mass and radius measurement of a compact object in supernova remnant HESS J1731-347, with an unusually low mass of $M=0.77^{+0.20}_{-0.17}\,M_{\odot}$ and a compact radius of $R=10.4^{+0.86}_{-0.78}$ km. We show that none of the sampled nuclear models meet all constraints at the $68\,\%$ credibility level, but that hybrid equations of state with a quark matter inner core and nuclear outer core easily can. This indicates a tension between astrophysical constraints and low-energy nuclear theory.
description: 7 pages, 3 figures, version to appear in PRC, minor changes
Numerical validation of Ehrenfest theorem in a Bohmian perspective for non-conservative systems
Creators: name: Paixão, Matheus M. A.
name: Lima, Henrique Santos
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we make a high precision numerical study of the Ehrenfest theorem using the Bohmian approach, where we obtain classical solutions from the quantum trajectories performing the Bohmian averages. We analyse the one-dimensional quantum harmonic and Duffing oscillator cases, finding numerical solutions of the time-dependent Schrödinger equation and the guidance equation for different sets of initial conditions and connects these results with the corresponding classical solutions. We also investigate the effect of introducing external forces of three types: a simple constant force, a fast-acting Gaussian impulse, and an oscillatory force with different frequencies. In the last case the resonance in the quantum trajectories was observed.
description: 13 pages and 11 figures