cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
Creators: name: Audren, Benjamin
name: Lesgourgues, Julien
name: Benabed, Karim
name: Prunet, Simon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Models for the latest stages of the cosmological evolution rely on a less solid theoretical and observational ground than the description of earlier stages like BBN and recombination. As suggested in a previous work by Vonlanthen et al., it is possible to tweak the analysis of CMB data in such way to avoid making assumptions on the late evolution, and obtain robust constraints on "early cosmology parameters". We extend this method in order to marginalise the results over CMB lensing contamination, and present updated results based on recent CMB data. Our constraints on the minimal early cosmology model are weaker than in a standard LCDM analysis, but do not conflict with this model. Besides, we obtain conservative bounds on the effective neutrino number and neutrino mass, showing no hints for extra relativistic degrees of freedom, and proving in a robust way that neutrinos experienced their non-relativistic transition after the time of photon decoupling. This analysis is also an occasion to describe the main features of the new parameter inference code Monte Python, that we release together with this paper. Monte Python is a user-friendly alternative to other public codes like CosmoMC, interfaced with the Boltzmann code class.
description: 18 pages, 4 figures, typos corrected. Code available at http://montepython.net
Extremal black brane solutions in five-dimensional gauged supergravity
Creators: name: Barisch-Dick, Susanne
name: Cardoso, Gabriel Lopes
name: Haack, Michael
name: Nampuri, Suresh
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study stationary black brane solutions in the context of N = 2, U(1) gauged supergravity in five dimensions. Using the formalism of first-order flow equations, we construct examples of extremal black brane solutions that include Nernst branes, i.e. extremal black brane solutions with vanishing entropy density, as well as black branes with cylindrical horizon topology, whose entropy density can be computed from a Cardy formula of the dual CFT.
description: 37 pages, 5 figures, v2: Added references and derivation of the first-order flow equations from a superpotential, version which appeared in JHEP
Hunderte Tote unter dem Marktplatz
Creators: name: Kairies, Madita-Sophie
name: Wahl, Joachim
Publisher: name: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege
Year: 2019

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 48 Nr. 2 (2019)
SYMBA: Symbolic Computation of Squared Amplitudes in High Energy Physics with Machine Learning
Creators: name: Alnuqaydan, Abdulhakim
name: Gleyzer, Sergei
name: Prosper, Harrison
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The cross section is one of the most important physical quantities in high-energy physics and the most time consuming to compute. While machine learning has proven to be highly successful in numerical calculations in high-energy physics, analytical calculations using machine learning are still in their infancy. In this work, we use a sequence-to-sequence model, specifically, a transformer, to compute a key element of the cross section calculation, namely, the squared amplitude of an interaction. We show that a transformer model is able to predict correctly 97.6% and 99% of squared amplitudes of QCD and QED processes, respectively, at a speed that is up to orders of magnitude faster than current symbolic computation frameworks. We discuss the performance of the current model, its limitations and possible future directions for this work.
Anomalous magnetotransport through reflection-symmetric artificial molecules
Creators: name: D'Anjou, B.
name: Coish, W. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate magnetotransport oscillations in current through a triple-quantum-dot molecule, accounting for higher harmonics (having flux period h/ne, with n an integer). For a reflection-symmetric triple quantum dot, we find that harmonics with n odd can dominate over those with n even. This is opposite to the behavior theoretically predicted due to `dark-state' localization, but has been observed in recent experiments [L. Gaudreau et al., Phys. Rev. B, 80, 075415 (2009)], albeit in a triple-dot that may not exhibit reflection symmetry. This feature arises from a more general result: In the weak-coupling limit, we find that the current is flux-independent for an arbitrary reflection-symmetric Aharonov-Bohm network. We further show that these effects are observable in nanoscale systems even in the presence of typical dephasing sources.
description: 5 pages, 3 figures; v2: Minor changes, final version to appear in Phys. Rev. B
HR-EBSD analysis of in situ stable crack growth at the micron scale
Creators: name: Koko, Abdalrhaman
name: Becker, Thorsten H.
name: Elmukashfi, Elsiddig
name: Pugno, Nicola M.
name: Wilkinson, Angus J.
name: Marrow, T. James
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Understanding the local fracture resistance of microstructural features. such as brittle inclusions, coatings, and interfaces at the microscale under complex loading conditions is critical for microstructure-informed design of materials. In this study, a novel approach has been formulated to decompose the J-integral evaluation of the elastic energy release rate to the three-dimensional stress intensity factors directly from experimental measurements of the elastic deformation gradient tensors of the crack field by in situ high (angular) resolution electron backscatter diffraction (HR-EBSD). An exemplar study is presented of a quasi-static crack, inclined to the observed surface, propagating on low index {hkl} planes in a (001) single crystal silicon wafer.
Self-gravitational collapse of polytropic mass-losing gaseous discs: effects of outer boundary condition dictated by parent cloud
Creators: name: Nourbakhsh, Erfan
name: Shadmehri, Mohsen
name: Abbassi, Shahram
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Given the fact that accretion discs are associated with their parent molecular cloud, we studied its effects as a constraint on the outer boundary of the viscous-resistive polytropic self-gravitating accretion flows subject to the mass and angular momentum loss.
description: Proceedings of IAUS 290 "Feeding Compact Objects: Accretion on All Scales", C. M. Zhang, T. Belloni, M. Mendez & S. N. Zhang (eds.)
Measurement of charmonium production in PbPb collisions at sqrt(sNN) = 2.76 TeV with CMS
Creators: name: Moon, Dong Ho
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Compact Muon Solenoid (CMS) is fully equipped to measure hard probes in the di-muon decay channel in the high multiplicity environment of nucleus-nucleus collisions. Such probes are especially relevant for studying the quark-gluon plasma since they are produced at early times and propagate through the medium, mapping its evolution. CMS has measured the nuclear modification factors of non-prompt J/psi (from b-hadron decays) and prompt J/psi in PbPb collisions at sqrt{s_{NN}} = 2.76 TeV. For prompt J/psi with relatively high p_T (p_T=6.5-30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/psi, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Results from the 2010 data taking period are reported and an outlook on the 2011 data analysis will be given. In particular from 2011 data the Psi(2S) measurement is available and their double ratio respect to the J/psi in pp and PbPb will be shown.
description: Presented at HP2012: Hard Probes 2012
title: Bericht der Römisch-Germanischen Kommission, Bd. 21 1931(1933): Bericht der Römisch-Germanischen Kommission
title: Bd. 21 1931(1933): Bericht der Römisch-Germanischen Kommission
titleType: AlternativeTitle
Creators: name: Bericht Der Römisch-Germanischen Kommission
Publisher: name: Bericht der Römisch-Germanischen Kommission
Year: 2016

description: Titel
Inhaltsverzeichnis
Bericht über die Tätigkeit der Römisch-Germanischen Kommission vom 1. April 1931 bis 31. März 1932...1-10
Die Erforschung der Steinzeit und der älteren und mittleren Bronzezeit in England und Wales von 1914-1931...11-85
Die Erforschung der Spätbronzezeit, Hallstatt- und Latène-Zeit in England und Wales von 1914 bis 1931...86-173
Verzeichnis der Abkürzungen zu den Aufsätzen von Kendrick (S. 11-85) und Hawkes (S. 86-173)...174-175
Nachträge zur römischen und frühmittelalterlichen Münzstatistik für Westfalen und seine Nachbarländer...176-182
Burgwälle in Norddalmatien...183-198
Lottia_cf._fenestrata.fas
Creators: name: Tao, Xu
Publisher: name: figshare
Year: 2021
Subjects: subject: 60301 Animal Systematics and Taxonomy
subject: FOS: Biological sciences

description: Transcriptomic data were download from NCBI SRA database and raw reads were assembled using Trinity v 3.2.1 . Mitochondrial protein-coding genes were identified by TBLASTX using the published nucleotide sequences of 13 protein coding genes of the closest relatives as queries.
17-19 and Unemployed on the Isle of Sheppey, 1980
17-19 and Unemployed
Creators: name: Wallace, C. D.
Publisher: name: UK Data Service
Year: 2023

description: This small-scale study for the Department of Employment, examined the experience of youth unemployment on the Isle of Sheppey. It drew on extended interviews with unemployed 17-19 year olds.
The isospectrality of asymptotic quasinormal modes of large Gauss-Bonnet d-dimensional black holes
Creators: name: Moura, Filipe
name: Rodrigues, João
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the quasinormal frequencies of d-dimensional large spherically symmetric black holes with Gauss-Bonnet corrections in the highly damped regime. We solve perturbatively the master differential equation and we compute the monodromies of the master perturbation variable (analytically continued to the complex plane) in different contours, in order to obtain the quasinormal mode spectra. We consider tensorial, vectorial and scalar gravitational perturbations, obtaining the same frequencies for the three cases like in Einstein gravity. We also separately perform the same calculation for test scalar fields.
description: 26 pages, 3 figures. v2: clarifications and references added. Published version
Phocoenoides dalli
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Phocoenidae
Phocoenoides
Phocoenoides dalli

description: Phocoenoides dalli (True, 1885). Proc. U.S. Nat. Mus., 8: 95. TYPE LOCALITY: U.S.A., Alaska, strait west of Adak, Aleutian Isis. DISTRIBUTION: North Pacific, temperate to subarctic waters. COMMENT: Includes truei; see Morejohn, 1979, in Winn and Olla, eds., Behavior of Marine Animals, 3:45-83. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002020001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 298, DOI: 10.5281/zenodo.7352983
Search for exotic resonances decaying into WZ/ZZ in pp collisions at sqrt(s) = 7 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for new exotic particles decaying to the VZ final state is performed, where V is either a W or a Z boson decaying into two overlapping jets and the Z decays into a pair of electrons, muons or neutrinos. The analysis uses a data sample of pp collisions corresponding to an integrated luminosity of 5 inverse femtobarns collected by the CMS experiment at the LHC at sqrt(s) = 7 TeV in 2011. No significant excess is observed in the mass distribution of the VZ candidates compared with the background expectation from standard model processes. Model-dependent upper limits at the 95% confidence level are set on the product of the cross section times the branching fraction of hypothetical particles decaying to the VZ final state as a function of mass. Sequential standard model W' bosons with masses between 700 and 940 GeV are excluded. In the Randall-Sundrum model for graviton resonances with a coupling parameter of 0.05, masses between 750 and 880 GeV are also excluded.
description: Replaced with published version. Added journal reference and DOI
Linear programming-based solution methods for constrained partially observable Markov decision processes
Creators: name: Helmeczi, Robert K.
name: Kavaklioglu, Can
name: Cevik, Mucahit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Constrained partially observable Markov decision processes (CPOMDPs) have been used to model various real-world phenomena. However, they are notoriously difficult to solve to optimality, and there exist only a few approximation methods for obtaining high-quality solutions. In this study, grid-based approximations are used in combination with linear programming (LP) models to generate approximate policies for CPOMDPs. A detailed numerical study is conducted with six CPOMDP problem instances considering both their finite and infinite horizon formulations. The quality of approximation algorithms for solving unconstrained POMDP problems is established through a comparative analysis with exact solution methods. Then, the performance of the LP-based CPOMDP solution approaches for varying budget levels is evaluated. Finally, the flexibility of LP-based approaches is demonstrated by applying deterministic policy constraints, and a detailed investigation into their impact on rewards and CPU run time is provided. For most of the finite horizon problems, deterministic policy constraints are found to have little impact on expected reward, but they introduce a significant increase to CPU run time. For infinite horizon problems, the reverse is observed: deterministic policies tend to yield lower expected total rewards than their stochastic counterparts, but the impact of deterministic constraints on CPU run time is negligible in this case. Overall, these results demonstrate that LP models can effectively generate approximate policies for both finite and infinite horizon problems while providing the flexibility to incorporate various additional constraints into the underlying model.
description: 42 pages, 8 figures
Dynamics and hysteresis in square lattice artificial spin-ice
Creators: name: Wysin, G. M.
name: Moura-Melo, W. A.
name: Mól, L. A. S.
name: Pereira, A. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Dynamical effects under geometrical frustration are considered in a model for artificial spin ice on a square lattice in two dimensions. Each island of the spin ice has a three-component Heisenberg-like dipole moment subject to shape anisotropies that influence its direction. The model has real dynamics, including rotation of the magnetic degrees of freedom, going beyond the Ising-type models of spin ice. The dynamics is studied using a Langevin equation solved via a second order Heun algorithm. Thermodynamic properties such as the specific heat are presented for different couplings. A peak in specific heat is related to a type of melting-like phase transition present in the model. Hysteresis in an applied magnetic field is calculated for model parameters where the system is able to reach thermodynamic equilibrium.
description: Revised version
A Temporal Fusion Transformer for Long-term Explainable Prediction of Emergency Department Overcrowding
Creators: name: Caldas, Francisco M.
name: Soares, Cláudia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Emergency Departments (EDs) are a fundamental element of the Portuguese National Health Service, serving as an entry point for users with diverse and very serious medical problems. Due to the inherent characteristics of the ED; forecasting the number of patients using the services is particularly challenging. And a mismatch between the affluence and the number of medical professionals can lead to a decrease in the quality of the services provided and create problems that have repercussions for the entire hospital, with the requisition of health care workers from other departments and the postponement of surgeries. ED overcrowding is driven, in part, by non-urgent patients, that resort to emergency services despite not having a medical emergency and which represent almost half of the total number of daily patients. This paper describes a novel deep learning architecture, the Temporal Fusion Transformer, that uses calendar and time-series covariates to forecast prediction intervals and point predictions for a 4 week period. We have concluded that patient volume can be forecasted with a Mean Absolute Percentage Error (MAPE) of 5.90% for Portugal's Health Regional Areas (HRA) and a Root Mean Squared Error (RMSE) of 84.4102 people/day. The paper shows empirical evidence supporting the use of a multivariate approach with static and time-series covariates while surpassing other models commonly found in the literature.
description: Extended Abstract presented at Machine Learning for Health (ML4H) symposium 2022, November 28th, 2022, New Orleans, United States & Virtual, http://www.ml4h.cc, 16 pages
Suppression of back-tunnelling events in hybrid single-electron turnstiles by source-drain bias modulation
Creators: name: Marín-Suárez, Marco
name: Pashkin, Yuri A.
name: Peltonen, Joonas T.
name: Pekola, Jukka P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Accuracy of single-electron currents produced in hybrid turnstiles at high operation frequencies is, among other errors, limited by electrons tunnelling in the wrong direction. Increasing the barrier transparency between the island and the leads, and the source-drain bias helps to suppress these events in a larger frequency range, although they lead to some additional errors. We experimentally demonstrate a driving scheme that suppresses tunnelling in the wrong direction hence extending the range of frequencies for generating accurate single-electron currents. The main feature of this approach is an additional AC signal applied to the bias with twice the frequency as the one applied to the gate electrode. This allows additional modulation of the island chemical potential. By using the new approach under certain parameters, we improve the single-electron current accuracy by one order of magnitude. Finally, we show through experimentally-contrasted calculations that our method can improve accuracy even in devices for which the usual gate driving gives errors $\sim 10^{-3}$ at high frequencies and can bring them under $5\times 10^{-4}$.
description: 11 pages
Jungbronzezeitliche Urnenfunde bei Lütenthien, Kr. Lüchow-Dannenberg
Creators: name: Harck, Ole
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 33 (1964): Nachrichten aus Niedersachsens Urgeschichte
Optimal error estimates of coupled and divergence-free virtual element methods for the Poisson--Nernst--Planck/Navier--Stokes equations
Creators: name: Dehghan, Mehdi
name: Gharibi, Zeinab
name: Ruiz-Baier, Ricardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L60, 82B24

description: In this article, we propose and analyze a fully coupled, nonlinear, and energy-stable virtual element method (VEM) for solving the coupled Poisson-Nernst-Planck (PNP) and Navier--Stokes (NS) equations modeling microfluidic and electrochemical systems (diffuse transport of charged species within incompressible fluids coupled through electrostatic forces). A mixed VEM is employed to discretize the NS equations whereas classical VEM in primal form is used to discretize the PNP equations. The stability, existence and uniqueness of solution of the associated VEM are proved by fixed point theory. Global mass conservation and electric energy decay of the scheme are also proved. Also, we obtain unconditionally optimal error estimates for both the electrostatic potential and ionic concentrations of PNP equations in the $H^{1}$-norm, as well as for the velocity and pressure of NS equations in the $\mathbf{H}^{1}$- and $L^{2}$-norms, respectively. Finally, several numerical experiments are presented to support the theoretical analysis of convergence and to illustrate the satisfactory performance of the method in simulating the onset of electrokinetic instabilities in ionic fluids, and studying how they are influenced by different values of ion concentration and applied voltage. These tests relate to applications in the desalination of water.
Non-thermal emission from Pulsar-Wind Nebulae in Starburst Galaxies
Creators: name: Ohm, Stefan
name: Hinton, Jim
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The recently detected gamma-ray emission from Starburst galaxies is most commonly considered to be diffuse emission arising from strong interactions of accelerated cosmic rays. Mannheim et al. (2012), however, have argued that a population of individual pulsar-wind nebulae (PWNe) could be responsible for the detected TeV emission. Here we show that the Starburst environment plays a critical role in the TeV emission from Starburst PWNe, and perform the first detailed calculations for this scenario. Our approach is based on the measured star-formation rates in the Starburst nuclei of NGC 253 and M 82, assumed pulsar birth periods and a simple model for the injection of non-thermal particles. The two-zone model applied here takes into account the high far-infrared radiation field, and different densities and magnetic fields in the PWNe and the Starburst regions, as well as particle escape. We confirm that PWNe can make a significant contribution to the TeV fluxes, provided that the injection spectrum of particles is rather hard and that the average pulsar birth period is rather short (~35 ms). The PWN contribution should lead to a distinct spectral feature which can be probed by future instruments such as CTA.
description: 5 pages, 3 figures, accepted for publication in MNRAS Letters
Nachuntersuchungen an zerstörten Hügelgräbern im Kreis Verden
Creators: name: Schünemann, Detlef
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 37 (1968): Nachrichten aus Niedersachsens Urgeschichte
Monodontidae Gray 1821
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Monodontidae

description: Family Monodontidae REVIEWED BY: T. Kasuya (TK); J. G. Mead (JGM); D. W. Rice (DWR); O. L. Rossolimo (OLR) (U.S.S.R.). COMMENT: Some authors include Orcaella in this family; see Kasuya, 1973, Sci. Rep. Whales Res. Inst. (Tokyo), 25:1 -103; and Barnes, 1976, Syst. Zool., 23:321-343; but see also Rice, 1977. Monodontidae has been considered as a subfamily of Delphinidae; but see also Rice, 1977. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411003000000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 298, DOI: 10.5281/zenodo.7352983
description: {"references": ["Kasuya, T. 1973. Systematic consideration of recent toothed whales based on the morphology of the tympano-periotic bone. Scientific Reports of the Whales Research Institute (Tokyo), 25: 1 - 103.", "Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15."]}
Local Symmetry Breaking Drives Picosecond Spin Domain Formation in Polycrystalline Semiconducting Films
Creators: name: Ashoka, Arjun
name: Nagane, Satyawan
name: Strkalj, Nives
name: Roose, Bart
name: Sung, Jooyoung
name: MacManus-Driscoll, Judith L.
name: Stranks, Samuel D.
name: Feldmann, Sascha
name: Rao, Akshay
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Photoinduced spin-charge interconversion in semiconductors with spin-orbit coupling could provide a route to optically addressable spintronics without the use of external magnetic fields. A central question is whether the resulting spin-associated charge currents are robust to structural disorder, which is inherent to polycrystalline semiconductors that are desirable for device applications. Using femtosecond circular polarization-resolved pump-probe microscopy on polycrystalline halide perovskite thin films, we observe the photoinduced ultrafast formation of spin-polarized positive and, unexpectedly, negative spin domains on the micron scale formed through lateral currents. Further, the polarization of these domains and lateral transport direction is switched upon switching the polarization of the pump helicity. Micron scale variations in the intensity of optical second-harmonic generation and vertical piezoresponse suggest that the spin domain formation is driven by the presence of strong local inversion symmetry breaking via inter-grain structural disorder. We propose that this leads to spatially varying Rashba-like spin textures that drive spin-momentum locked currents, leading to local spin accumulation. Our results establish ultrafast spin domain formation in polycrystalline semiconductors as a new optically addressable platform for nanoscale spin-device physics.
The translation Invariant Massive Nelson Model: II. The Continuous Spectrum Below the Two-boson Threshold
Creators: name: Møller, Jacob Schach
name: Rasmussen, Morten Grud
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we continue the study of the energy-momentum spectrum of a class of translation invariant, linearly coupled, and massive Hamiltonians from non-relativistic quantum field theory. The class contains the Hamiltonians of E. Nelson and H. Froehlich. One of us previously investigated the structure of the ground state mass shell and the bottom of the continuous energy-momentum spectrum. Here we study the continuous energy-momentum spectrum itself up to the two-boson threshold, the threshold for energetic support of two-boson scattering states. We prove that non-threshold embedded mass shells have finite multiplicity and can accumulate only at thresholds. We furthermore establish the non-existence of singular continuous energy-momentum spectrum. Our results hold true for all values of the particle-field coupling strength but only below the two-boson threshold. The proof revolves around the construction of a certain relative velocity vector field used to construct a conjugate operator in the sense of Mourre.
Proattitudinal versus counterattitudinal messages: Message discrepancy, reactance, and the boomerang effect
Creators: name: Zhao, Xinyan
name: Fink, Edward L.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: A boomerang effect involves the movement of a message recipient's belief, attitude, or behavior in a direction contrary to the advocated position in the message. There has been limited scholarly attention to the mechanism of belief boomerang. To better understand boomerang effects, we tested the effect of message discrepancy on belief boomerang and the mechanism underlying such an effect with a between-subjects factorial study (N = 458). Our results revealed that a counterattitudinal message resulted in belief boomerang, whereas a proattitudinal message resulted in persuasion. The relationship between discrepancy and belief boomerang was accounted for by a motivational (i.e., reactance) process. The results suggest the significance of examining the boomerang effect as an outcome distinct from a failure to persuade.
Recursive generation of one-loop amplitudes in the Standard Model
Creators: name: Actis, Stefano
name: Denner, Ansgar
name: Hofer, Lars
name: Scharf, Andreas
name: Uccirati, Sandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce the computer code Recola for the recursive generation of tree-level and one-loop amplitudes in the Standard Model. Tree-level amplitudes are constructed using off-shell currents instead of Feynman diagrams as basic building blocks. One-loop amplitudes are represented as linear combinations of tensor integrals whose coefficients are calculated similarly to the tree-level amplitudes by recursive construction of loop off-shell currents. We introduce a novel algorithm for the treatment of colour, assigning a colour structure to each off-shell current which enables us to recursively construct the colour structure of the amplitude efficiently. Recola is interfaced with a tensor-integral library and provides complete one-loop Standard Model amplitudes including rational terms and counterterms. As a first application we consider Z+2jets production at the LHC and calculate with Recola the next-to-leading-order electroweak corrections to the dominant partonic channels.
description: 25 pages, 8 eps figures, section on accuracy and efficiency added, version to appear in JHEP
ОИЛАДА БОЛА ТАРБИЯСИ ТОИФАЛАРИ ВА ОҚИБАТЛАРИ
Creators: name: Ғаниева, Машҳура
Publisher: name: Zenodo
Year: 2023

description: мақолада ота-онанинг фарзанд тарбиясида эътибор қаратиши лозим бўлган жиҳатлар ҳамда ота-она ва болаларнинг ўзаро муносабатлари илмий таҳлил қилиниб, бой маданий меросимиз ва миллий қадриятларимиз бола тарбиясида муҳим категориялар сифатида қаралиши кераклиги асослантирилган.
Coulomb renormalization and ratio of proton and neutron asymptotic normalization coefficients for mirror nuclei
Creators: name: Mukhamedzhanov, A. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Asymptotic normalization coefficients (ANCs) are fundamental nuclear constants playing important role in nuclear reactions, nuclear structure and nuclear astrophysics. In this paper the physical reasons of the Coulomb renormalization of the ANC are addressed. Using Pinkston-Satchler equation the ratio for the proton and neutron ANCs of mirror nuclei is obtained in terms of the Wronskians from the radial overlap functions and regular solutions of the two-body Schrödinger equation with the short-range interaction excluded. This ratio allows one to use microscopic overlap functions for mirror nuclei in the internal region, where they are the most accurate, to correctly predict the ratio of the ANCs for mirror nuclei, which determine the amplitudes of the tails of the overlap functions. Calculations presented for different nuclei demonstrate the Coulomb renormalization effects and independence of the ratio of the nucleon ANCs for mirror nuclei on the channel radius. This ratio is valid both for bound states and resonances. One of the goals of this paper is to draw attention on the possibility to use the Coulomb renormalized ANCs rather than the standard ones especially when the standard ANCs are too large.
description: 20 pages, 14 figures
Ein völkerwanderungszeitliches Gefäß aus dem Kreise Einbeck
Creators: name: Plümer, Erich
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 37 (1968): Nachrichten aus Niedersachsens Urgeschichte
Eine frühgeschichtliche Speerspitze von Rhade, Kr. Bremervörde
Creators: name: Nowothnig, Walter
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 37 (1968): Nachrichten aus Niedersachsens Urgeschichte
Wilhelmi, Klemens: Beiträge zur einheimischen Kultur der jüngeren vorrömischen Eisen- und der älteren römischen Kaiserzeit zwischen Niederrhein und Mittelweser
Creators: name: Niquet, Franz
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Wilhelmi, Klemens: Beiträge zur einheimischen Kultur der jüngeren vorrömischen Eisen- und der älteren römischen Kaiserzeit zwischen Niederrhein und Mittelweser. Münster/Westfalen 1967. (Bodenaltertümer Westfalens. 11.)
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 37 (1968): Nachrichten aus Niedersachsens Urgeschichte
Fast Flavor Transformations
Creators: name: Richers, Sherwood
name: Sen, Manibrata
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The neutrino fast flavor instability (FFI) can change neutrino flavor on time scales of nanoseconds and length scales of centimeters. It is expected to be ubiquitous in core-collapse supernovae and neutron star mergers, potentially modifying the neutrino signal we see, how matter is ejected from these explosions, and the types of heavy elements that form in the ejecta and enrich the universe. There has been a great deal of recent interest in understanding the role the FFI plays in supernovae and mergers, but the short length and time scales and the strong nonlinearity have prevented the FFI from being included consistently in these models. We review the theoretical nature of the FFI starting with the quantum kinetic equations, where the instability exists in neutron star mergers and supernovae, and how the instability behaves after saturation in simplified simulations. We review the proposed methods to test for instability in moment-based calculations where the full distribution is not available and describe the numerical methods used to simulate the instability directly. Finally, we close by outlining the trajectory toward realistic, self-consistent models that will allow a more complete understanding of the impact of the FFI in supernovae and mergers.
description: Short review for the Handbook of Nuclear Physics. 13 pages, 1 figure
Delphinapterus Lacepede 1804
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Monodontidae
Delphinapterus

description: Delphinapterus Lacepede, 1804. Hist. Nat. Cetacees, pp. xli, 243. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411003001000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 298, DOI: 10.5281/zenodo.7352983
Excited-State Quantum Phase Transitions in the Anharmonic Lipkin-Meshkov-Glick Model: Dynamical Aspects
Creators: name: Khalouf-Rivera, Jamil
name: Gamito, Juan
name: Pérez-Bernal, Francisco
name: Arias, José Miguel
name: Pérez-Fernández, Pedro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The standard Lipkin-Meshkov-Glick (LMG) model undergoes a second-order ground-state quantum phase transition (QPT) and an excited-state quantum phase transition (ESQPT). The inclusion of an anharmonic term in the LMG Hamiltonian gives rise to a second ESQPT that alters the static properties of the model [Phys. Rev. E 106, 044125 (2022)]. In the present work, the dynamical implications associated to this new ESQPT are analyzed. For that purpose, a quantum quench protocol is defined on the system Hamiltonian that takes an initial state, usually the ground state, into a complex excited state that evolves on time. The impact of the new ESQPT on the time evolution of the survival probability and the local density of states after the quantum quench, as well as on the Loschmidt echoes and the microcanonical out-of-time-order correlator (OTOC) are discussed. The anharmonity-induced ESQPT, despite having a different physical origin, has dynamical consequences similar to those observed in the ESQPT already present in the standard LMG model.
Electronic Strengthening of Graphene by Charge Doping
Creators: name: Si, Chen
name: Duan, Wenhui
name: Liu, Zheng
name: Liu, Feng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphene is known as the strongest 2D material in nature, yet we show that moderate charge doping of either electrons or holes can further enhance its ideal strength by up to ~17%, based on first principles calculations. This unusual electronic enhancement, versus conventional structural enhancement, of material's strength is achieved by an intriguing physical mechanism of charge doping counteracting on strain induced enhancement of Kohn anomaly, which leads to an overall stiffening of zone boundary K1 phonon mode whose softening under strain is responsible for graphene failure. Electrons and holes work in the same way due to the high electron-hole symmetry around the Dirac point of graphene, while over doping may weaken the graphene by softening other phonon modes. Our findings uncover another fascinating property of graphene with broad implications in graphene-based electromechanical devices.
description: 11 pages, 4 figures
Anisotropic deformation of the 6-state clock model: Tricritical-point classification
Creators: name: Polackova, Maria
name: Gendiar, Andrej
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The two-dimensional $q$-state clock models exhibit the Berezinskii-Kosterlitz-Thouless (BKT) transition for $q\geq5$ since they are a subset of the isotropic XY model. We examine the $6$-state clock model with an anisotropic deformation. Selecting the $6$-state Potts model as a source of the deformation, the model naturally violates the discrete rotational symmetry of the clock model. We introduce the anisotropic deformation parameter $α$ in the clock model interpolating the clock ($α= 1$) and the Potts ($α= 0$) models. We employ the corner transfer matrix renormalization group method to analyze the phase transitions on the square lattice in the thermodynamic limit. Three different phases and phase transitions are identified. The phase diagram is constructed, and we determine a tricritical point at $α_{\rm c} = 0.21405(4)$ and $T_{\rm c} = 0.834017(5)$. Analyzing the latent heat and the entanglement entropy in the vicinity of the $T_{\rm c}(α_{\rm c})$, we observe a single discontinuous phase transition and two BKT phase transitions meeting in the tricritical point. The tricritical point exhibits a phase transition of the second order with the critical exponents $β\approx 1/10$ and $δ\approx 14$. We conjecture that an infinitesimal surrounding of the tricritical point consists of the three fundamental phase transitions, in which the first and the BKT orders gradually weaken into the second-order tricritical point.
Parity breaking and scaling behavior in light-matter interaction
Creators: name: Liu, T.
name: Feng, M.
name: Yang, W. L.
name: Zou, J. H.
name: Li, L.
name: Fan, Y. X.
name: Wang, K. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The light-matter interaction described by Rabi model and Jaynes-Cummings (JC) model is investigated by parity breaking as well as the scaling behavior of ground-state population-inversion expectation. We show that the parity breaking leads to different scaling behaviors in the two models, where the Rabi model demonstrates scaling invariance, but the JC model behaves in cusp-like way. Our study helps further understanding rotating-wave approximation and could present more subtle physics than any other characteristic parameter for the difference between the two models. More importantly, our results could be straightforwardly applied to the understanding of quantum phase transitions in spin-boson model. Furthermore, the scaling behavior is observable using currently available techniques in light-matter interaction.
description: 3 figures
title: Writingplace, No. 8-9 (2023): Writing Urban Places: New Narratives for the European City
title: Writing Urban Places: New Narratives for the European City
titleType: AlternativeTitle
Creators: name: Writingplace
Publisher: name: Writingplace
Year: 2023

description: The special issue Writing Urban Places: New Narratives on the European City, marks the culmination of an international research network that delved into the intricate interplay between communities, urban spaces and narratives. At its core, this endeavour introduced an inventive approach aimed at deepening our comprehension of urban communities, their dynamics and their rootedness, all through the lens of narrative methodologies. This collection gives an account of the dynamics of this network of academics, which consists of over 175 individuals from 35 different European countries and a variety of disciplinary backgrounds. As such, the issue offers a conclusion to the Writing Urban Places COST Action while also, hopefully, providing a springboard for further reflections and discussions on urban narratives, and the role these could play in spatial developments in the European city.
description: Delft Kamza and Tirana Osijek Almada Skopje Çanakkale Tampere Tallinn Porto Limerick Fieldwork for Writing Urban Places Unearthing Urban Narratives. Towards a Repository of Methods Intermediate European Cities. Conditions Between Metropolis and Town Placing Urban Writings. Narrative Technology and Possible Futures for the European City Introduction
Von Weimar nach Geislingen
Creators: name: Büchner, Dieter
Publisher: name: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege
Year: 2019

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 48 Nr. 2 (2019)
Ein Hügelgrab bei Düdenbüttel, Kr. Stade
Creators: name: Lüdke, W.
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 33 (1964): Nachrichten aus Niedersachsens Urgeschichte
Nonlinear Model Predictive Control Framework For Cooperative Three-Agent Target Defense Game
Creators: name: Manoharan, Amith
name: Sujit, P. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents cooperative target defense guidance strategies using nonlinear model predictive control (NMPC) framework for a target-attacker-defender (TAD) game. The TAD game consists of an attacker and a cooperative target-defender pair. The attacker's objective is to capture the target, whereas the target-defender team acts together such that the defender can intercept the attacker and ensure target survival. We assume that the cooperative target-defender pair do not have perfect knowledge of the attacker states, and hence the states are estimated using an Extended Kalman Filter (EKF). The capture analysis based on the Apollonius circles is performed to identify the target survival regions. The efficacy of the NMPC-based solution is evaluated through extensive numerical simulations. The results show that the NMPC-based solution offers robustness to the different unknown attacker models and has better performance than CLOS and A-CLOS based strategies.
description: 16 pages
Supplemental Material from Goffin's cockatoos discriminate objects based on weight alone
Creators: name: Lambert, Poppy J.
name: Stiegler, Alexandra
name: Rössler, Theresa
name: Lambert, Megan L.
name: Auersperg, Alice M. I.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology

description: Here we provide further details on our methods and analysis.
Six-dimensional Methods for Four-dimensional Conformal Field Theories II: Irreducible Fields
Creators: name: Weinberg, Steven
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This note supplements an earlier paper on conformal field theories. There it was shown how to construct tensor, spinor, and spinor-tensor primary fields in four dimensions from their counterparts in six dimensions, where conformal transformations act simply as SO(4,2) Lorentz transformations. Here we show how to constrain fields in six dimensions so that the corresponding primary fields in four dimensions transform according to irreducible representations of the four-dimensional Lorentz group, even when the irreducibility conditions on these representations involve the four-component Levi-Civita tensor $ε_{μνρσ}$.
description: 7 pages. Accepted for publication in Phys. Rev. D. A typographical error corrected, and references added
Convergence Properties of the Effective Theory for Trapped Bosons
Creators: name: Tölle, S.
name: Hammer, H. -W.
name: Metsch, B. Ch.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate few-boson systems with resonant interactions in a narrow harmonic trap within an effective theory framework. The size of the model space is identified with the effective theory cutoff. In the universal regime, the interactions of the bosons can be approximated by contact interactions. We investigate the convergence properties of genuine and smeared contact interactions as the size of the model space is increased and present a detailed error analysis. The spectra for few-boson systems with up to 6 identical particles are calculated by combining extrapolations in the cutoff and in the smearing parameter.
description: 26 pages, 14 figures