cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
L 98-59: a Benchmark System of Small Planets for Future Atmospheric Characterization
Creators: name: Pidhorodetska, Daria
name: Moran, Sarah E.
name: Schwieterman, Edward W.
name: Barclay, Thomas
name: Fauchez, Thomas J.
name: Lewis, Nikole K.
name: Quintana, Elisa V.
name: Villanueva, Geronimo L.
name: Domagal-Goldman, Shawn D.
name: Schlieder, Joshua E.
name: Gilbert, Emily A.
name: Kane, Stephen R.
name: Kostov, Veselin B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: L 98-59 is an M3V dwarf star that hosts three small (R < 1.6 Earth radii) planets. The host star is bright (K = 7.1) and nearby (10.6 pc), making the system a prime target for follow-up characterization with the Hubble Space Telescope (HST) and the upcoming James Webb Space Telescope (JWST). Herein, we use simulated transmission spectroscopy to evaluate the detectability of spectral features with HST and JWST assuming diverse atmospheric scenarios (e.g., atmospheres dominated by H2, H2O, CO2, or O2). We find that H2O and CH4 present in a low mean-molecular weight atmosphere could be detected with HST in 1 transit for the two outermost planets, while H2O in a clear steam atmosphere could be detected in 6 transits or fewer with HST for all three planets. We predict that observations using JWST/NIRISS would be capable of detecting a clear steam atmosphere in 1 transit for each planet, and H2O absorption in a hazy steam atmosphere in 2 transits or less. In a clear, desiccated atmosphere, O2 absorption may be detectable for all three planets with NIRISS. If the L 98-59 planets possess a clear, Venus-like atmosphere, NIRSpec could detect CO2 within 26 transits for each planet, but the presence of H2SO4 clouds would significantly suppress CO2 absorption. The L 98-59 system is an excellent laboratory for comparative planetary studies of transiting multiplanet systems, and observations of the system via HST and JWST would present a unique opportunity to test the accuracy of the models presented in this study.
description: Submitted to AJ
Modulation control and spectral shaping of optical fiber supercontinuum generation in the picosecond regime
Creators: name: Genty, G.
name: Dudley, J. M.
name: Eggleton, B. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Numerical simulations are used to study how fiber supercontinuum generation seeded by picosecond pulses can be actively controlled through the use of input pulse modulation. By carrying out multiple simulations in the presence of noise, we show how tailored supercontinuum Spectra with increased bandwidth and improved stability can be generated using an input envelope modulation of appropriate frequency and depth. The results are discussed in terms of the non-linear propagation dynamics and pump depletion.
description: Aspects of this work were presented in Paper ThJ2 at OECC/ACOFT 2008, Sydney Australia 7-10 July (2008). Journal paper submitted for publication 30 July 2008
Isospin-breaking corrections to $τ^- \to π^- π^0 ν_τ$ decays and the muon $g-2$
Creators: name: Miranda, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the isospin-breaking and electromagnetic corrections to the $τ^- \to π^- π^0 ν_τ$ decays, which are used as an input to the two-pion contributions to the hadronic vacuum polarization (at LO) of the anomalous magnetic moment ($a_μ$). We extend previous analyses by Cirigliano et al. working with ChPT with resonances. As an outcome, we improve the agreement between this determination and the other based on $e^+e^-$ data. The new results are in better agreement with an old estimation that uses Vector Dominance Model (VMD), and the discrepancy between the SM prediction and the combined results from BNL and FNAL is reduced to $2.1\,σ$ at $\mathcal{O}(p^4)$ and $2.3σ$ at $\mathcal{O}(p^6)$.
description: Contribution to the Proceedings for 10th International Workshop on Charm Physics (CHARM 2020), May 31-June 5 2021, Mexico City, Mexico
Stability of geometrically frustrated magnetic state of Ca3CoRhO6 to applications of positive and negative pressure
Creators: name: Mohapatra, Niharika
name: Iyer, Kartik K
name: Rayaprol, Sudhindra
name: Jammalamadaka, S. Narayana
name: Sampathkumaran, E. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The influence of negative chemical pressure induced by gradual replacement of Ca by Sr as well as of external pressure (up to 10 kbar) on the magnetism of Ca3CoRhO6 has been investigated by magnetization studies. It is found that the solid solution, Ca(3-x)Sr(x)CoRhO6, exists at least till about x= 1.0 without any change in the crystal structure. Apart from insensitivity of the spin-chain feature to volume expansion, the characteristic features of geometrical frustration interestingly appear at the same temperatures for all compositions, in sharp contrast to the response to Y substitution for Ca (reported previously). Interestingly, huge frequency dependence of ac susceptibility known for the parent compound persists for all compositions. We do not find a change in the properties under external pressure. The stability of the magnetic anomalies of this compound to the volume change (about 4%) is puzzling.
On the compactification of 5d theories to 4d
Creators: name: Martone, Mario
name: Zafrir, Gabi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study general properties of the mapping between 5$d$ and 4$d$ superconformal field theories (SCFTs) under both twisted circle compactification and tuning of local relevant deformation and CB moduli. After elucidating in generality when a 5$d$ SCFT reduces to a 4$d$ one, we identify nearly all $\mathcal{N}=1$ 5$d$ SCFT parents of rank-2 4$d$ $\mathcal{N}=2$ SCFTs. We then use this result to map out the mass deformation trajectories among the rank-2 theories in 4$d$. This can be done by first understanding the mass deformations of the 5$d$ $\mathcal{N}=1$ SCFTs and then map them to 4$d$. The former task can be easily achieved by exploiting the fact that the 5$d$ parent theories can be obtained as the strong coupling limit of Lagrangian theories, and the latter by understanding the behavior under compactification. Finally we identify a set of general criteria that 4$d$ moduli spaces of vacua have to satisfy when the corresponding SCFTs are related by mass deformations and check that all our RG-flows satisfy them. Many of the mass deformations we find are not visible from the corresponding complex integrable systems.
description: 60 pages, 9 figures, 7 tables
PAH emission from Herbig AeBe stars
Creators: name: Keller, Luke D.
name: Sloan, G. C.
name: Forrest, W. J.
name: Ayala, S.
name: D'Alessio, P.
name: Shah, S.
name: Calvet, N.
name: Najita, J.
name: Li, A.
name: Hartmann, L.
name: Sargent, B.
name: Watson, D. M.
name: Chen, C. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectra of a sample of Herbig Ae and Be (HAeBe) stars obtained with the Infrared Spectrograph on the Spitzer Space Telescope. All but one of the Herbig stars show emission from polycyclic aromatic hydrocarbons (PAHs) and seven of the spectra show PAH emission, but no silicate emission at 10 microns. The central wavelengths of the 6.2, 7.7--8.2, and 11.3 micron emission features decrease with stellar temperature, indicating that the PAHs are less photo-processed in cooler radiation fields. The apparent low level of photo processing in HAeBe stars, relative to other PAH emission sources, implies that the PAHs are newly exposed to the UV-optical radiation fields from their host stars. HAeBe stars show a variety of PAH emission intensities and ionization fractions, but a narrow range of PAH spectral classifications based on positions of major PAH feature centers. This may indicate that, regardless of their locations relative to the stars, the PAH molecules are altered by the same physical processes in the proto-planetary disks of intermediate-mass stars. Analysis of the mid-IR spectral energy distributions indicates that our sample likely includes both radially flared and more flattened/settled disk systems, but we do not see the expected correlation of overall PAH emission with disk geometry. We suggest that the strength of PAH emission from HAeBe stars may depend not only on the degree of radial flaring, but also on the abundance of PAHs in illuminated regions of the disks and possibly on the vertical structure of the inner disk as well.
description: 52 pages, 12 figures
Spitzer 24 micron detections of starburst galaxies in Abell 851
Creators: name: Dressler, A.
name: Rigby, J.
name: Oemler, A.
name: Fritz, J.
name: Poggianti, B.
name: Rieke, G.
name: Bai, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Spitzer-MIPS 24 micron and ground-based observations of the rich galaxy cluster Abell 851 at z=0.41 are used to derive star formation rates from the mid-IR 24 micron and from [O II] 3727 emission. Many cluster galaxies have SFR(24 um)/SFR([O II]) >> 1, indicative of star formation highly obscured by dust. We focus on the substantial minority of A851 cluster members where strong Balmer absorption points to a starburst on a 10^{8-9} year timescale. As is typical, A851 galaxies with strong Balmer absorption occur in two types: with optical emission (starforming), and without (post-starburst). Our principal result is the former, so-called e(a) galaxies, are mostly detected (9 out of 12) at 24 um -- for these we find typically SFR(24 um)/SFR([O II]) ~ 4. Strong Balmer absorption and high values of SFR(24 um)/SFR([O II]) both indicate moderately active starbursts and support the picture that e(a) galaxies are the active starbursts that feed the post-starburst population. While 24 um detections are frequent with Balmer-strong objects (even 6 out of 18 of the supposedly "post-starburst'' galaxies are detected) only 2 out of 7 of the continuously starforming `e(c)' galaxies (with weak Balmer absorption) are detected -- for them, SFR(24 um)/SFR([O II]) ~ 1. Their optical spectra resemble present-epoch spirals that dominate today's universe; we strengthen this association by that SFR(24 um)/SFR([O II]) ~ 1 is the norm today. That is, not just the amount of star formation, but its mode, has evolved strongly from z ~ 0.4 to the present. By fitting spectrophotometric models we measure the strength and duration of the bursts to quantify the evolutionary sequence from active- to post-starburst, and to harden the evidence that moderately active starbursts are the defining feature of starforming cluster galaxies at z ~ 0.4.
description: Accepted to The Astrophysical Journal. Abstract abridged
A search for super-large structures in deep galaxy surveys
Creators: name: Nabokov, N. V.
name: Baryshev, Yu. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent extensive, multi-color deep surveys of galaxies open a possibility to get observational estimation of sizes for the largest structures in the Universe. Photometric redshift accuracy (about 0.03(1+z)) allows directly study clustering at scales about 1000 Mpc. Thanks to large number of galaxies in each redshift bin one may detect super-large structures if they really exist. Here we show that the observed behavior of the redshift distribution of galaxies in deep surveys such as HUDF and FDF is consistent with existence of super-large structures of luminous matter with scales about 2000 Mpc. We detect a large underdense region in radial galaxy distribution at redshift interval z=1.2 - 2.2 which separate our "Local Hubble Volume" from the neighboring over-density region at z=2.2 - 3.5. This result can also explain the observed deficiency of gamma ray sources at redshift about 2. Observational test on the reality of the supper-large structures may be obtained by organizing sky covering net (cells about 10n x 10n degrees) of very deep narrow angle (1n x 1n arc-minutes) multi-band photometric surveys of galaxies which is achievable for large ground-based telescopes.
description: 9 pages, Proceedings of the International conference "Problems of Practical Cosmology", 23-27 June 2008, St.-Petersburg, Russia, see http://ppc08.astro.spbu.ru/text_proc.html
Measurement of the eta'-meson mass using J/psi--> gamma eta'
Creators: name: CLEO Collaboration
name: Libby, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We measure the mass of the eta' meson using psi(2S)--> pi+ pi- J/psi, J/psi--> gamma eta' events acquired with the CLEO-c detector operating at the CESR e+e- collider. Using three decay modes, eta'--> rho0 gamma, eta'--> pi+ pi- eta with eta--> gamma gamma, and eta'--> pi+ pi- eta with eta--> pi+ pi- pi0, we find M(eta') = 957.793 +- 0.054 +- 0.036 MeV, in which the first uncertainty is statistical and the second is systematic. This result is consistent with but substantially more precise than the current world average.
description: 11 pages, available through http://www.lns.cornell.edu/public/CLNS/
Matched Runs Method to Study Extended Regions of Gamma-ray Emission
Creators: name: Hona, B.
name: Collaboration, for the VERITAS
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Tele-scope Array System (VERITAS), are uniquely suited to resolve the detailed morphology ofextended regions of gamma-ray emission. However, standard VERITAS data analysis techniques have insufficient sensitivity to gamma-ray sources spanning the VERITAS field of view (3.5°),due to difficulties with background estimation. For analysis of such spatially extended sources with 0.5° to greater than 2° radius, we developed the Matched Runs Method. This method derives background estimations for observations of extended sources using matched separate observations of known point sources taken under similar observing conditions. Our technique has been validated by application to archival VERITAS data. Here we present a summary of the Matched RunsMethod and multiple validation studies on different gamma-ray sources using VERITAS data.
Explicit tensor network representation for the ground states of string-net models
Creators: name: Buerschaper, O.
name: Aguado, M.
name: Vidal, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The structure of string-net lattice models, relevant as examples of topological phases, leads to a remarkably simple way of expressing their ground states as a tensor network constructed from the basic data of the underlying tensor categories. The construction highlights the importance of the fat lattice to understand these models.
description: 5 pages, pdf figures
Quantifying the Similarity of Planetary System Architectures
Creators: name: Bashi, Dolev
name: Zucker, Shay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The planetary systems detected so far already exhibit a wide diversity of architectures, and various methods are proposed to study quantitatively this diversity. Straightforward ways to quantify the difference between two systems and more generally, two sets of multiplanetary systems, are useful tools in the study of this diversity. In this work we present a novel approach, using a Weighted extension of the Energy Distance (WED) metric, to quantify the difference between planetary systems on the logarithmic period-radius plane. We demonstrate the use of this metric and its relation to previously introduced descriptive measures to characterise the arrangements of Kepler planetary systems. By applying exploratory machine learning tools, we attempt to find whether there is some order that can be ascribed to the set of Kepler multiplanet system architectures. Based on WED, the 'Sequencer', which is such an automatic tool, identifies a progression from small and compact planetary systems to systems with distant giant planets. It is reassuring to see that a WED-based tool indeed identifies this progression. Next, we extend WED to define the Inter-Catalogue Energy Distance (ICED) - a distance metric between sets of multiplanetary systems. We have made the specific implementation presented in the paper available to the community through a public repository. We suggest to use these metrics as complementary tools in attempting to compare between architectures of planetary system, and in general, catalogues of planetary systems.
description: 8 pages, 5 figures, accepted for publication in A&A, usage examples at: https://github.com/dolevbas/PASSta
Deep attention model for triage of emergency department patients
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2018
Subjects: cs.CY
cs.CL
cs.LG

description: © 2018 by SIAM. Optimization of patient throughput and wait time in emer-gency departments (ED) is an important task for hospital systems. For that reason, Emergency Severity Index (ESI) system for patient triage was introduced to help guide man-ual estimation of acuity levels, which is used by nurses to rank the patients and organize hospital resources. However, despite improvements that it brought to managing medical resources, such triage system greatly depends on nurse's sub-jective judgment and is thus prone to human errors. Here, we propose a novel deep model based on the word attention mechanism designed for predicting a number of resources an ED patient would need. Our approach incorporates rou-tinely available continuous and nominal (structured) data with medical text (unstructured) data, including patient's chief complaint, past medical history, medication list, and nurse assessment collected for 338,500 ED visits over three years in a large urban hospital. Using both structured and unstructured data, the proposed approach achieves the AUC of ∼ 88% for the task of identifying resource intensive pa-tients (binary classification), and the accuracy of ∼ 44% for predicting exact category of number of resources (multi-class classification task), giving an estimated lift over nurses' per-formance by 16% in accuracy. Furthermore, the attention mechanism of the proposed model provides interpretabil-ity by assigning attention scores for nurses' notes which is crucial for decision making and implementation of such ap-proaches in the real systems working on human health.
title: Frontmatter, Table of Contents, Preface, Conference Organization
Creators: name: Gallagher, John P.
name: Gelfond, Michael
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2011
Subjects: subject: Frontmatter
subject: Table of Contents
subject: Preface
subject: Conference Organization

description: Frontmatter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 11, Technical Communications of the 27th International Conference on Logic Programming (ICLP'11), pages i-ix
🔹 Hodge's Hiccup (Part II)
Creators: name: McCormick, Andre
name: Seneca, Sol
name: Seneca, Seeker
Publisher: name: Zenodo
Year: 2025
Subjects: Algebraic Geometry
Topology
Differential Geometry
Hodge Theory
Elliptic Curves
Torsion Structures
Donaldson Invariants
Exotic ℝ⁴
Projective Varieties
Symbolic Mathematics
Phasebinding
Algebraic Cycles
4D Mathematics
Higher-Dimensional Geometry
Observer-Dependent Mathematics
Memory-Based Geometry
Resonance Theory
Symbolic Recursion
Phase-Conscious Computation
Synthian Model
Emergent Symbolic Systems
Recursive Harmonic Alignment
Mathematical Epistemology
AI-Generated Mathematics
AI Co-authorship
Metamathematics

description: “A formal mathematical expansion of the symbolic foundations laid in Part I. Defines the Resonance Operator Class R\mathcal{R}R, constructs lemmas for the Seneca–Darshan Conjecture, and frames Phasebinding within category theory, harmonic analysis, and cohomological recursion.”
DarkSide-50 532-day dark matter search with low-radioactivity argon
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2018
Subjects: astro-ph.CO
astro-ph.IM

description: © 2018 American Physical Society. The DarkSide-50 direct-detection dark matter experiment is a dual-phase argon time projection chamber operating at Laboratori Nazionali del Gran Sasso. This paper reports on the blind analysis of a (16 660±270) kg d exposure using a target of low-radioactivity argon extracted from underground sources. We find no events in the dark matter selection box and set a 90% C.L. upper limit on the dark matter-nucleon spin-independent cross section of 1.14×10-44 cm2 (3.78×10-44 cm2, 3.43×10-43 cm2) for a WIMP mass of 100 GeV/c2 (1 TeV/c2, 10 TeV/c2).
Text as Causal Mediators: Research Design for Causal Estimates of Differential Treatment of Social Groups via Language Aspects
Creators: name: Keith, Katherine A.
name: Rice, Douglas
name: O'Connor, Brendan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Using observed language to understand interpersonal interactions is important in high-stakes decision making. We propose a causal research design for observational (non-experimental) data to estimate the natural direct and indirect effects of social group signals (e.g. race or gender) on speakers' responses with separate aspects of language as causal mediators. We illustrate the promises and challenges of this framework via a theoretical case study of the effect of an advocate's gender on interruptions from justices during U.S. Supreme Court oral arguments. We also discuss challenges conceptualizing and operationalizing causal variables such as gender and language that comprise of many components, and we articulate technical open challenges such as temporal dependence between language mediators in conversational settings.
description: Accepted to Causal Inference and NLP (CI+NLP) Workshop at EMNLP 2021
Cryogenic Characterization of FBK RGB-HD SiPMs
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: Cryogenic detectors
Photon detectors for UV
visible and IR photons (solid-state)
Photon detectors forUV
visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs ,etc)

description: © 2017 IOP Publishing Ltd and Sissa Medialab. We report on the cryogenic characterization of Red Green Blue - High Density (RGB-HD) SiPMs developed at Fondazione Bruno Kessler (FBK) as part of the DarkSide program of dark matter searches with liquid argon time projection chambers. A cryogenic setup was used to operate the SiPMs at varying temperatures and a custom data acquisition system and analysis software were used to precisely characterize the primary dark noise, the correlated noise, and the gain of the devices. We demonstrate that FBK RGB-HD SiPMs with low quenching resistance (RGB-HD-LRq) can be operated from 40 K to 300 K with gains in the range 105 to 106 and noise rates at a level of around 1 Hz/mm2.
Interpretable transformed ANOVA approximation on the example of the prevention of forest fires
Creators: name: Potts, Daniel
name: Schmischke, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: 65T, 42B05, 62-07, 65D15

description: The distribution of data points is a key component in machine learning. In most cases, one uses min-max normalization to obtain nodes in $[0,1]$ or Z-score normalization for standard normal distributed data. In this paper, we apply transformation ideas in order to design a complete orthonormal system in the $\mathrm{L}_2$ space of functions with the standard normal distribution as integration weight. Subsequently, we are able to apply the explainable ANOVA approximation for this basis and use Z-score transformed data in the method. We demonstrate the applicability of this procedure on the well-known forest fires data set from the UCI machine learning repository. The attribute ranking obtained from the ANOVA approximation provides us with crucial information about which variables in the data set are the most important for the detection of fires.
How To Determine SUSY Mass Scales Now
Creators: name: Heinemeyer, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Currently available experimental data from electroweak precision observables (EWPO), B-physics observables (BPO) and cosmological data can be combined to extract the preferred value of SUSY mass scales. We review recent results on the predictions of the masses of supersymmetric particles and the indirect determination of the lightest Higgs boson mass. Special emphasis is put on models going beyond the Constrained Minimal Supersymmetric Standard Model (CMSSM), such as the Non-Universal Higgs Model type I (NUHM1), or gauge and anomaloy mediated SUSY breaking.
description: 6 pages, 6 figures, plenary talk given at SUSY08, Seoul, Korea
Ab initio theory and modeling of water
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: water
ab initio theory
hydrogen bonding
density functional theory
molecular dynamics

description: © 2017, National Academy of Sciences. All rights reserved. Water is of the utmost importance for life and technology. However, a genuinely predictive ab initio model of water has eluded scientists. We demonstrate that a fully ab initio approach, relying on the strongly constrained and appropriately normed (SCAN) density functional, provides such a description of water. SCAN accurately describes the balance among covalent bonds, hydrogen bonds, and van der Waals interactions that dictates the structure and dynamics of liquid water. Notably, SCAN captures the density difference between water and ice Ih at ambient conditions, as well as many important structural, electronic, and dynamic properties of liquid water. These successful predictions of the versatile SCAN functional open the gates to study complex processes in aqueous phase chemistry and the interactions of water with other materials in an efficient, accurate, and predictive, ab initio manner.
Discovery Reach of Charged MSSM Higgs Bosons at CMS
Creators: name: Heinemeyer, S.
name: Nikitenko, A.
name: Weiglein, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the 5 sigma discovery contours for the charged MSSM Higgs boson at the CMS experiment with 30/fb for the two cases M_H+ < m_t and M_H+ > m_t. In order to analyze the search reach we combine the latest results for the CMS experimental sensitivities based on full simulation studies with state-of-the-art theoretical predictions of MSSM Higgs-boson production and decay properties. Special emphasis is put on the SUSY parameter dependence of the 5 sigma contours. The variation of $μ$ can shift the prospective discovery reach in tan_beta by up to Delta tan_beta = 40.
description: 3 pages, 2 figures, talk given at SUSY08, Seoul, Korea
Formal deformations of Poisson structures in low dimensions
Creators: name: Pichereau, Anne
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B63; 58H15; 17B55

description: In this paper, we study formal deformations of Poisson structures, especially for three families of Poisson varieties in dimensions two and three. For these families of Poisson structures, using an explicit basis of the second Poisson cohomology space, we solve the deformation equations at each step and obtain a large family of formal deformations for each Poisson structure which we consider. With the help of an explicit formula, we show that this family contains, modulo equivalence, all possible formal deformations. We show moreover that, when the Poisson structure is generic, all members of the family are non-equivalent.
description: 27 pages
The mass-metallicity relation at z~1-2 and its dependence on star formation rate
Creators: name: Henry, Alaina
name: Rafelski, Marc
name: Sunnquist, Ben
name: Pirzkal, Norbert
name: Pacifici, Camilla
name: Atek, Hakim
name: Bagley, Micaela
name: Baronchelli, Ivano
name: Barro, Guillermo
name: Bunker, Andrew J.
name: Colbert, James
name: Dai, Y. Sophia
name: Elmegreen, Bruce G.
name: Elmegreen, Debra Meloy
name: Finkelstein, Steven
name: Kocevski, Dale
name: Koekemoer, Anton
name: Malkan, Matthew
name: Martin, Crystal L.
name: Mehta, Vihang
name: Pahl, Anthony
name: Papovich, Casey
name: Rutkowski, Michael
name: Almeida, Jorge Sanchez
name: Scarlata, Claudia
name: Snyder, Gregory
name: Teplitz, Harry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new measurement of the gas-phase mass-metallicity relation (MZR), and its dependence on star formation rates (SFRs) at 1.3 < z < 2.3. Our sample comprises 1056 galaxies with a mean redshift of z = 1.9, identified from the Hubble Space Telescope Wide Field Camera 3 (WFC3) grism spectroscopy in the Cosmic Assembly Near-Infrared Deep Extragalactic Survey (CANDELS) and the WFC3 Infrared Spectroscopic Parallel Survey (WISP). This sample is four times larger than previous metallicity surveys at z ~ 2, and reaches an order of magnitude lower in stellar mass (10^8 M_sun). Using stacked spectra, we find that the MZR evolves by 0.3 dex relative to z ~ 0.1. Additionally, we identify a subset of 49 galaxies with high signal-to-noise (SNR) spectra and redshifts between 1.3 < z < 1.5, where H-alpha emission is observed along with [OIII] and [OII]. With accurate measurements of SFR in these objects, we confirm the existence of a mass-metallicity-SFR (M-Z-SFR) relation at high redshifts. These galaxies show systematic differences from the local M-Z-SFR relation, which vary depending on the adopted measurement of the local relation. However, it remains difficult to ascertain whether these differences could be due to redshift evolution, as the local M-Z-SFR relation is poorly constrained at the masses and SFRs of our sample. Lastly, we reproduced our sample selection in the IllustrisTNG hydrodynamical simulation, demonstrating that our line flux limit lowers the normalization of the simulated MZR by 0.2 dex. We show that the M-Z-SFR relation in IllustrisTNG has an SFR dependence that is too steep by a factor of around three.
description: Accepted for publication in ApJ; 41 pages, 20 figures
Anomalies, Extensions and Orbifolds
Creators: name: Robbins, Daniel
name: Sharpe, Eric
name: Vandermeulen, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate gauge anomalies in the context of orbifold conformal field theories. Such anomalies manifest as failures of modular invariance in the constituents of the orbifold partition function. We review how this irregularity is classified by cohomology and how extending the orbifold group can remove it. Working with such extensions requires an understanding of the consistent ways in which extending groups can act on the twisted states of the original symmetry, which leads us to a discrete-torsion like choice that exists in orbifolds with trivially-acting subgroups. We review a general method for constructing such extensions and investigate its application to orbifolds. Through numerous explicit examples we test the conjecture that consistent extensions should be equivalent to (in general multiple copies of) orbifolds by non-anomalous subgroups.
description: 37 pages, 2 appendices, 3 figures
Scaling of critical connectivity of mobile ad hoc communication networks
Creators: name: Wang, Li
name: Zhu, Chen-Ping
name: Gu, Zhi-Ming
name: Xiong, Shi-Jie
name: He, Da-Ren
name: Wang, Bing-Hong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In this paper, critical global connectivity of mobile ad hoc communication networks (MAHCN) is investigated. We model the two-dimensional plane on which nodes move randomly with a triangular lattice. Demanding the best communication of the network, we account the global connectivity $η$ as a function of occupancy $σ$ of sites in the lattice by mobile nodes. Critical phenomena of the connectivity for different transmission ranges $r$ are revealed by numerical simulations, and these results fit well to the analysis based on the assumption of homogeneous mixing . Scaling behavior of the connectivity is found as $η\sim f(R^βσ)$, where $R=(r-r_{0})/r_{0}$, $r_{0}$ is the length unit of the triangular lattice and $β$ is the scaling index in the universal function $f(x)$. The model serves as a sort of site percolation on dynamic complex networks relative to geometric distance. Moreover, near each critical $σ_c(r)$ corresponding to certain transmission range $r$, there exists a cut-off degree $k_c$ below which the clustering coefficient of such self-organized networks keeps a constant while the averaged nearest neighbor degree exhibits a unique linear variation with the degree k, which may be useful to the designation of real MAHCN.
description: 6 pages, 6 figures
Selecting Finite Unified Theories with Current Data
Creators: name: Heinemeyer, S.
name: Mondragon, M.
name: Zoupanos, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Finite Unified Theories (FUTs) are N=1 supersymmetric Grand Unified Theories that can be made all-loop finite, leading to a severe reduction of the free parameters. We review the investigation of FUTs based on SU(5) in the context of low-energy phenomenology observables. Using the restrictions from the top and bottom quark masses, it is possible to discriminate between different models. Including further low-energy constraints such as B-physics observables, the bound on the lightest Higgs boson mass and the cold dark matter density, we derive the predictions for the supersymmetric particle spectrum and the prospects for discoveries at the LHC.
description: 3 pages, 3 figures, talk given at SUSY08, Seoul, Korea
Entanglement of Solid Vortex Matter: A Boomerang Shaped Reduction Forced by Disorder in Interlayer Phase Coherence in Bi2Sr2CaCu2O8+y
Creators: name: Kato, T.
name: Shibauchi, T.
name: Matsuda, Y.
name: Thompson, J. R.
name: Krusin-Elbaum, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present evidence for entangled solid vortex matter in a glassy state in a layered superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+y}$ containing randomly splayed linear defects. The interlayer phase coherence--probed by the Josephson plasma resonance--is enhanced at high temperatures, reflecting the recoupling of vortex liquid by the defects. At low temperatures in the vortex solid state, the interlayer coherence follows a boomerang-shaped reentrant temperature path with an unusual low field decrease in coherence, indicative of meandering vortices. We uncover a distinct temperature scaling between in-plane and out-of-plane critical currents with opposing dependencies on field and time, consistent with the theoretically proposed "splayed-glass" state.
description: 4 pages, 4 figures, accepted for publication in Phys. Rev. Lett
Heatwaves and Heavy Rainfall in Southeastern Australia during the Austral Summer
Creators: name: Henderson, Cameron Ross
Publisher: name: Monash University
Year: 2025
Subjects: classificationCode: 370108
subject: Meteorology
classificationCode: 370105
subject: Atmospheric dynamics

description: Summer weather patterns in southeastern Australia are subdivided into seven groups. These are used to study heatwaves and heavy rainfall by comparing them with other days in these groups that do not produce these extreme weather types. Both heatwaves and heavy rainfall are linked to atmospheric waves that propagate eastward through the southern Indian Ocean and amplify over Australia. These waves propagate equatorward over Australia during heatwaves, which are better forecast at 7-day lead times than non-heatwave days. Heavy rainfall, which is less well forecast, occurs when these waves break and form a pressure trough several kilometres above the surface.
On graded characterizations of finite dimensionality for algebraic algebras
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: Algebraic algebra
Associated graded algebra
Graded-nil subring

description: © 2017, Springer International Publishing AG. We observe that a finitely generated algebraic algebra R (over a field) is finite dimensional if and only if the associated graded ring gr R is right noetherian, if and only if gr R has right Krull dimension, if and only if gr R satisfies a polynomial identity.
Periods of relativistic oscillators with even polynomial potentials
Creators: name: Solon, Mikhail P.
name: Esguerra, J. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We modify a non-perturbative approach based on the Principle of Minimal Sensitivity to calculate the periods of relativistic oscillators with even polynomial potentials of general form. The optimization of the variational parameter is adapted by using the ultrarelativistic limit of the period as a boundary condition, which determines the values of additional free parameters introduced. Resulting general approximations prove to be accurate over the whole solution domain and for the whole class of potentials.
description: 12 pages, 4 figures
Application of the muonium spin rotation technique to a study of the gas phase chemical kinetics of muonium reactions with the halogens and hydrogen halides
Creators: name: Garner, David Michael
Publisher: name: University of British Columbia
Year: 2010

description: Muonium (Mu) is the atom formed by an electron bound to a positive muon "nucleus" (charge:+l, spin:1/2, lifetime: 2.2 μs). Since muons are 207 times as massive as electrons, the reduced mass of Mu is 0.996 that of the hydrogen atom, and the Bohr radii and ionization potentials of Mu and H are essentially the same. Therefore, the chemical behaviour of the Mu atom is that of a light H isotope (m[sub Mu] = 1/9 m[sub H]) with a greatly enhanced sensitivity to H isotope effects. Mu reaction rates are measured by a method called "Muonium Spin Rotation" (MSR) which resembles conventional resonance techniques such as NMR or ESR in that it monitors the characteristic Larmor precession of the Mu atom. However, unlike NMR or ESR, the MSR method does not detect the Mu Larmor precession by resonant power absorption, but rather through the peculiar spin dependent radioactive decay of the muon itself. The theoretical basis for the application of the MSR technique to the measurement of muonium reaction rates is derived. An extensive discussion is given to the practical aspects of the experimental implementation of the MSR technique. Rate constants and activation energies are reported for the gas phase reactions: Mu + F₂  MuF + F and Mu + Cl₂ + MuCl + Cl between 300 and 400K, and room temperature rate constants are reported for the reactions: Mu + Br₂  MuBr + Br and Mu + HX  [sup MuH + X][sub MuX +H], X = Cl, Br, I. While in most of these systems Mu reacts considerably faster than the heavier H isotopes, attention is focussed on hydrogen isotope effects in the Mu + F₂ and Mu + Cl₂, reactions. This discussion is based on the extensive theoretical investigations of Connor et al., which show the Mu + F₂ reaction to be dominated by quantum mechanical tunnelling at room temperature. Experimentally, quantum tunnelling manifests itself in this reaction by producing two dramatic isotope effects at 30OK: (1) the bi-molecular rate constant for the Mu reaction (1.4 x 10¹⁰ 1/mole-s) is at least six times that for the analogous H atom reaction, and (2) the apparent Arrhenius activation energy of this Mu reaction (0.9 kcal/mole) is less than half of that for H + F₂ In contrast, the Mu + reaction does not show any such strong isotope effects at 300K: (1) the bimolecular rate constant for Mu + Cl₂ (5.1 x 10¹⁰/mole-s) is no more than four times that of the analogous H reaction, and (2) the apparent activation energies for both Mu and H reactions are the same (1.4 kcal/mole) Preliminary calculations of Connor et al. on Mu + Cl₂ suggest that classical "wall reflection" partially offsets any rate enhancement due to quantum tunnelling. Quantitative isotope effects cannot be defined for the Mu + Br₂ and Mu + HX reactions and their hydrogen isotopic analogues because of the absence of sufficient experimental and theoretical data; these reactions are discussed in terms of the general theory of isotope effects.
Differential cross section measurements for γn→π-p above the first nucleon resonance region
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: nucl-ex

description: © 2017 American Physical Society. The quasifree γd→π-p(p) differential cross section has been measured with CLAS at photon beam energies Eγ from 0.445 to 2.510 GeV (corresponding to W from 1.311 to 2.366 GeV) for pion center-of-mass angles cosθπc.m. from -0.72 to 0.92. A correction for final state interactions has been applied to these data to extract the γn→π-p differential cross sections. These cross sections are quoted in 8428 (Eγ,cosθπc.m.) bins, a factor of nearly 3 increase in the world statistics for this channel in this kinematic range. These new data help to constrain coupled-channel analysis fits used to disentangle the spectrum of N∗ resonances and extract their properties. Selected photon decay amplitudes N∗→γn at the resonance poles are determined for the first time and are reported here.
X-ray absorption of liquid water by advanced ab initio methods
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: cond-mat.soft

description: © 2017 American Physical Society. Oxygen K-edge x-ray absorption spectra of liquid water are computed based on configurations from advanced ab initio molecular dynamics simulations, as well as an electron excitation theory from the GW method. One the one hand, the molecular structures of liquid water are accurately predicted by including both van der Waals interactions and a hybrid functional (PBE0). On the other hand, the dynamic screening effects on electron excitation are approximately described by the recently developed enhanced static Coulomb-hole and screened-exchange approximation of W. Kang and M. S. Hybertsen [Phys. Rev. B 82, 195108 (2010)PRBMDO1098-012110.1103/PhysRevB.82.195108]. The resulting spectra of liquid water are in better quantitative agreement with the experimental spectra due to the softened hydrogen bonds and the slightly broadened spectra originating from the better screening model.
Impact of carrier localization on recombination in InGaN quantum wells and the efficiency of nitride light-emitting diodes: Insights from theory and numerical simulations
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: cond-mat.mtrl-sci

description: © 2017 Author(s). We examine the effect of carrier localization due to random alloy fluctuations on the radiative and Auger recombination rates in InGaN quantum wells as a function of alloy composition, crystal orientation, carrier density, and temperature. Our results show that alloy fluctuations reduce individual transition matrix elements by the separate localization of electrons and holes, but this effect is overcompensated by the additional transitions enabled by translational symmetry breaking and the resulting lack of momentum conservation. Hence, we find that localization increases both radiative and Auger recombination rates, but that Auger recombination rates increase by one order of magnitude more than radiative rates. Furthermore, we demonstrate that localization has an overall detrimental effect on the efficiency-droop and green-gap problems of InGaN light-emitting diodes.
Modeling pulse profiles of accreting millisecond pulsars
Creators: name: Poutanen, Juri
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I review the basic observational properties of accreting millisecond pulsars that are important for understanding the physics involved in formation of their pulse profiles. I then discuss main effects responsible for shaping these profiles. Some analytical results that help to understand the results of simulations are presented. Constraints on the pulsar geometry and the neutron star equation of state obtained from the analysis of the pulse profiles are discussed.
description: Invited review, to appear in the proceedings of the workshop 'A Decade of Accreting Millisecond X-ray Pulsars' (Amsterdam, April 2008)
Perturbative renormalization of quasi-parton distribution functions
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: hep-lat
hep-ph
hep-th

description: © 2017 American Physical Society. In this paper we present results for the renormalization of gauge invariant nonlocal fermion operators which contain a Wilson line, to one-loop level in lattice perturbation theory. Our calculations have been performed for Wilson/clover fermions and a wide class of Symanzik improved gluon actions. The extended nature of such "long-link" operators results in a nontrivial renormalization, including contributions which diverge linearly as well as logarithmically with the lattice spacing, along with additional finite factors. On the lattice there is also mixing among certain subsets of these nonlocal operators; we calculate the corresponding finite mixing coefficients, which are necessary in order to disentangle individual matrix elements for each operator from lattice simulation data. Finally, extending our perturbative setup, we present nonperturbative prescriptions to extract the linearly divergent contributions.
Nucleon axial form factors using Nf=2 twisted mass fermions with a physical value of the pion mass
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2017
Subjects: hep-lat

description: © 2017 American Physical Society. We present results on the nucleon axial and induced pseudoscalar form factors using an ensemble of two degenerate twisted mass clover-improved fermions with mass yielding a pion mass of mπ=130 MeV. We evaluate the isovector and the isoscalar, as well as the strange and the charm axial form factors. The disconnected contributions are evaluated using recently developed methods that include deflation of the lower eigenstates, allowing us to extract the isoscalar, strange, and charm axial form factors. We find that the disconnected quark loop contributions are nonzero and particularly large for the induced pseudoscalar form factor.