cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 7 of Cys-SH based quantitative redox proteomics of salt induced response in sugar beet monosomic addition line M14
Creators: name: Li, Jinna
name: Wang, Kun
name: Ji, Meichao
name: Zhang, Tingyue
name: Yang, Chao
name: Liu, He
name: Chen, Sixue
name: Li, Hongli
name: Li, Haiying
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 7: Table S5. Transcriptional level, redox level and protein expressing pattern of seven differential redox proteins and 11 differential proteins.
It’s not (really) the medium, it’s the message : interpersonal emotion regulation across in-person and digitally-mediated contexts
Creators: name: Lisi, Diana Michelle
Publisher: name: University of British Columbia
Year: 2021

description: Introduction: The field of emotion regulation (ER) has grown exponentially over the past two decades. Yet, the literature to date has largely focused on the independent efforts of an individual in the ER process, and social processes – specifically, interpersonal emotion regulation (IER) – are comparatively understudied. Moreover, given the ubiquity of digital technologies and the ease and convenience with which they afford opportunities for social connection, how these modes of communication may be used for IER is worthy of exploration. The current research utilized an intensive longitudinal design to better understand the extent to which in-person and digitally-mediated methods of communication may be associated with different emotional and social outcomes, as well as the role of IER in this relationship. Methods: A sample of 237 emerging adults completed brief surveys twice daily for seven days. Surveys assessed modes of communication used for IER, specific IER strategies used in the interaction, positive and negative emotions, and satisfaction with responses. Multilevel modeling assessed the association of mode of communication with support satisfaction and emotions. Multilevel mediation assessed whether these relationships could be explained by differences in IER strategies. Results: Compared to in-person communication, those who used an overall greater proportion of digital communication across the study period reported lower satisfaction and higher negative emotions. Positive IER strategies significantly mediated the relationship between mode of communication and socioemotional outcomes, both within time points and on average across the study period. That is, digital (versus in-person) communication was associated with reports of lower satisfaction and positive emotions, and this was explained, in part, by lower levels of positive IER strategies (and specifically, less laughter) in digital interactions. Conclusions: This is the first known study to examine IER over digital and in-person methods of communication, as well as provide context into the reasons why negative outcomes have previously been linked to digital communication. Future research that considers additional within- and between-person factors associated with mode of communication is required. This research additionally highlights the need to examine the burgeoning field of IER as it occurs across diverse methods of communication.
Электрические машины: Типовая программа, методические указания и контрольные задания для студентов заочной формы обучения специальности 0628 (ЭМ - ЭМА)
Creators: name: Владимировна, Шевченко Валентина
name: Фрумин Валерий Львович
Publisher: name: Zenodo
Year: 1988
Subjects: методические указания
электрические машины

description: Электрические машины: Типовая программа, методические указания и контрольные задания для студентов заочной формы обучения специальности 0628 (ЭМ - ЭМА) / составитель Шевченко В.В., отв. за выпуск Фрумин В.Л. - УССР, Харьков: УЗПИ, 1988. https://doi.org/10.5281/zenodo.2638731
Intense widely-controlled terahertz radiation from laser-driven wires
Creators: name: Bukharskii, N.
name: Korneev, Ph.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Irradiation of a thin metallic wire with an intense femtosecond laser pulse creates a strong discharge wave that travels as a narrow pulse along the wire surface. The travelling discharge efficiently emits secondary radiation with spectral characteristics mostly defined by the wire geometry. Several exemplary designs are considered in the context of generation of intense terahertz radiation with controllable characteristics for various scientific and technological applications. The proposed setup benefits by its robustness, versatility and high conversion efficiency of laser energy to terahertz radiation, which reaches several percent.
La psicologia positiva orientata al benessere degli alunni
Creators: name: Marturano, Michele Paride
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021
Subjects: questionario MDI
benessere
psicologia positiva

description: Il seguente lavoro ha lo scopo di indagare l’influenza di un itinerario didattico di educazione fisica su determinate dimensioni del benessere degli alunni. Il quadro teorico fa riferimento alla nascita e allo sviluppo di quel ramo della Psicologia definito “Psicologia Positiva”. Nella seconda parte del lavoro si delinea il progetto di ricerca e gli interventi eseguiti: l’intenzione è quella di indagare come cambia la percezione di tre dimensioni del benessere – empatia, autostima e ottimismo – in allievi di scuola media, in seguito ad un itinerario di educazione fisica in ambito sociomotorio in relazione alla dimensione relazionale della personalità. L’approccio metodologico utilizzato è quello della “ricerca-azione”. In un primo momento è stato somministrato alle due classi coinvolte – una IIª e una IVª – il questionario Middle Years Development Instrument e i risultati sono stati confrontati con il campione di riferimento di coetanei del Canton Ticino. La fase successiva ha visto la progettazione e l’attuazione dell’itinerario, attraverso dieci unità didattiche, al termine del quale è stato somministrato agli alunni una versione ridotta del questionario MDI, sulla base delle dimensioni del benessere indagate. L’analisi di questi ultimi dati, raffrontati a quelli iniziali, ha permesso di scorgere dei cambiamenti nella percezione di empatia e ottimismo (la percezione di autostima non si è modificata in modo significativo) nella classe IVª, meno nella classe IIª coinvolta. Relatori: Alberto Crescentini e Luca Sciaroni.
Constraining properties of asymmetric dark matter candidates from gravitational-wave observations
Creators: name: Singh, Divya
name: Gupta, Anuradha
name: Berti, Emanuele
name: Reddy, Sanjay
name: Sathyaprakash, B. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The accumulation of certain types of dark matter particles in neutron star cores due to accretion over long timescales can lead to the formation of a mini black hole. In this scenario, the neutron star is destabilized and implodes to form a black hole without significantly increasing its mass. When this process occurs in neutron stars in coalescing binaries, one or both stars might be converted to a black hole before they merge. Thus, in the mass range of $\sim \mbox{1--2}\, M_\odot,$ the Universe might contain three distinct populations of compact binaries: one containing only neutron stars, the second population of only black holes, and a third, mixed population consisting of a neutron star and a black hole. However, it is unlikely to have a mixed population as the various timescales allow for both neutron stars to remain or collapse within a short timescale. In this paper, we explore the capability of future gravitational-wave detector networks, including upgrades of Advanced LIGO and Virgo, and new facilities such as the Cosmic Explorer and Einstein Telescope (XG network), to discriminate between different populations by measuring the effective tidal deformability of the binary, which is zero for binary black holes but nonzero for binary neutron stars. Furthermore, we show that observing the relative abundances of the different populations can be used to infer the timescale for neutron stars to implode into black holes, and in turn, provide constraints on the particle nature of dark matter. The XG network will infer the implosion timescale to within an accuracy of 0.01 Gyr at 90% credible interval and determine the dark matter mass and interaction cross section to within a factor of 2 GeV and 10 cm$^{-2}$, respectively.
From data to knowledge: Research data management
Creators: name: Celjak, Draženko
name: Imamagić, Emir
Publisher: name: Zenodo
Year: 2025

description: Presented at the Conference on Data Sharing and Secondary Analysis in Child and Youth Wellbeing Research, organised within the COORDINATE project, held in Zagreb from 9th to 10th December 2024. The main objective of the conference was to showcase existing efforts in secondary data analysis for research and policy development, and to discuss the benefits and challenges of data-sharing practices in the field of child and youth wellbeing.
Dynamical aspects of inextensible chains
Creators: name: Ferrari, Franco
name: Pyrka, Maciej
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present work the dynamics of a continuous inextensible chain is studied. The chain is regarded as a system of small particles subjected to constraints on their reciprocal distances. It is proposed a treatment of systems of this kind based on a set Langevin equations in which the noise is characterized by a non-gaussian probability distribution. The method is explained in the case of a freely hinged chain. In particular, the generating functional of the correlation functions of the relevant degrees of freedom which describe the conformations of this chain is derived. It is shown that in the continuous limit this generating functional coincides with a model of an inextensible chain previously discussed by one of the authors of this work. Next, the approach developed here is applied to a inextensible chain, called the freely jointed bar chain, in which the basic units are small extended objects. The generating functional of the freely jointed bar chain is constructed. It is shown that it differs profoundly from that of the freely hinged chain. Despite the differences, it is verified that in the continuous limit both generating functionals coincide as it is expected.
description: 15 pages, LaTeX 2e + various packages, 3 figures. The title has been changed and three references have been added. A large part of the manuscript has been rewritten to improve readability. Chapter 4 has been added. It contains the construction of the generating functional without the shish-kebab approximation and a new derivation of the continuous limit of the freely jointed bar chain
Listen to what they say: Better understand and detect online misinformation with user feedback
Creators: name: Etienne, Hubert
name: Çelebi, Onur
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Social media users who report content are key allies in the management of online misinformation, however, no research has been conducted yet to understand their role and the different trends underlying their reporting activity. We suggest an original approach to studying misinformation: examining it from the reporting users perspective at the content-level and comparatively across regions and platforms. We propose the first classification of reported content pieces, resulting from a review of c. 9,000 items reported on Facebook and Instagram in France, the UK, and the US in June 2020. This allows us to observe meaningful distinctions regarding reporting content between countries and platforms as it significantly varies in volume, type, topic, and manipulation technique. Examining six of these techniques, we identify a novel one that is specific to Instagram US and significantly more sophisticated than others, potentially presenting a concrete challenge for algorithmic detection and human moderation. We also identify four reporting behaviours, from which we derive four types of noise capable of explaining half of the inaccuracy found in content reported as misinformation. We finally show that breaking down the user reporting signal into a plurality of behaviours allows to train a simple, although competitive, classifier on a small dataset with a combination of basic users-reports to classify the different types of reported content pieces.
The Hungry Fly: Hydrodynamics of feeding in the common house fly
Creators: name: Prakash, Manu
name: Steele, Miles
Publisher: name: arXiv
Year: 2010
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: A large number of insect species feed primarily on a fluid diet. To do so, they must overcome the numerous challenges that arise in the design of high-efficiency, miniature pumps. Although the morphology of insect feeding structures has been described for decades, their dynamics remain largely unknown even in the most well studied species (e.g. fruit fly). Here, in the fluid dynamics video, we demonstrate in-vivo imaging and microsurgery to elucidate the design principles of feeding structures of the common house fly. Using high-resolution X-ray absorption microscopy, we record in-vivo flow of sucrose solutions through the body over many hours during fly feeding. Borrowing from microsurgery techniques common in neurophysiology, we are able to perturb the pump to a stall position and thus evaluate function under load conditions. Furthermore, fluid viscosity-dependent feedback is observed for optimal pump performance. As the gut of the fly starts to fill up, feedback from the stretch receptors in the cuticle dictates the effective flow rate. Finally, via comparative analysis between the housefly, blow fly, fruit fly and bumble bees, we highlight the common design principles and the role of interfacial phenomena in feeding.
description: Two videos are included with this submission
Investigating Content-Aware Neural Text-To-Speech MOS Prediction Using Prosodic and Linguistic Features
Creators: name: Vioni, Alexandra
name: Maniati, Georgia
name: Ellinas, Nikolaos
name: Sung, June Sig
name: Hwang, Inchul
name: Chalamandaris, Aimilios
name: Tsiakoulis, Pirros
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Current state-of-the-art methods for automatic synthetic speech evaluation are based on MOS prediction neural models. Such MOS prediction models include MOSNet and LDNet that use spectral features as input, and SSL-MOS that relies on a pretrained self-supervised learning model that directly uses the speech signal as input. In modern high-quality neural TTS systems, prosodic appropriateness with regard to the spoken content is a decisive factor for speech naturalness. For this reason, we propose to include prosodic and linguistic features as additional inputs in MOS prediction systems, and evaluate their impact on the prediction outcome. We consider phoneme level F0 and duration features as prosodic inputs, as well as Tacotron encoder outputs, POS tags and BERT embeddings as higher-level linguistic inputs. All MOS prediction systems are trained on SOMOS, a neural TTS-only dataset with crowdsourced naturalness MOS evaluations. Results show that the proposed additional features are beneficial in the MOS prediction task, by improving the predicted MOS scores' correlation with the ground truths, both at utterance-level and system-level predictions.
description: Proceedings of ICASSP 2023
High Resolution Flicker-Noise-Free Frequency Measurements of Weak Microwave Signals
Creators: name: Creedon, Daniel L.
name: Tobar, Michael E.
name: Ivanov, Eugene N.
name: Hartnett, John G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Amplification is usually necessary when measuring the frequency instability of microwave signals. In this work, we develop a flicker noise free frequency measurement system based on a common or shared amplifier. First, we show that correlated flicker phase noise can be cancelled in such a system. Then we compare the new system with the conventional by simultaneously measuring the beat frequency from two cryogenic sapphire oscillators with parts in 10^15 fractional frequency instability. We determine for low power, below -80 dBm, the measurements were not limited by correlated noise processes but by thermal noise of the readout amplifier. In this regime, we show that the new readout system performs as expected and at the same level as the standard system but with only half the number of amplifiers. We also show that, using a standard readout system, the next generation of cryogenic sapphire oscillators could be flicker phase noise limited when instability reaches parts in 10^16 or better
description: Accepted for publication in IEEE Transactions on Microwave Theory & Techniques
Reading Notes on Professor Sangeeta Ray’s   Gayatri Chakravorty Spivak:  A Polemic with Digressions on a Theory of Irreducibility
Creators: name: Leonard, Jerry
Publisher: name: Cultural Logic: A Journal of Marxist Theory & Practice
Year: 2018

description: Cultural Logic: A Journal of Marxist Theory & Practice, Vol 18 (2011)
Measuring orbital eccentricity and periastron advance in quasi-circular black hole simulations
Creators: name: Mroué, Abdul H.
name: Pfeiffer, Harald P.
name: Kidder, Lawrence E.
name: Teukolsky, Saul A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compare different methods of computing the orbital eccentricity of quasi-circular binary black hole systems using the orbital variables and gravitational wave phase and frequency. For eccentricities of about a per cent, most methods work satisfactorily. For small eccentricity, however, the gravitational wave phase allows a particularly clean and reliable measurement of the eccentricity. Furthermore, we measure the decay of the orbital eccentricity during the inspiral and find reasonable agreement with post-Newtonian results. Finally, we measure the periastron advance of non-spinning binary black holes, and we compare them to post-Newtonian approximations. With the low uncertainty in the measurement of the periastron advance, we positively detect deviations between fully numerical simulations and post-Newtonian calculations.
description: 12 pages, 8 figures.
ANF preserves dependent types up to extensional equality
Creators: name: Koronkevich, Paulette
Publisher: name: University of British Columbia
Year: 2021

description: A growing number of programmers use dependently typed languages such as Coq to machine-verify important properties of high-assurance software. However, existing compilers for these languages provide no guarantees after compiling, nor when linking after compilation. Type-preserving compilers preserve guarantees encoded in types, then use type checking to verify compiled code and ensure safe linking with external code. Unfortunately, standard compiler passes do not preserve the dependent typing of commonly used (intensional) type theories. This is because assumptions valid in simpler type systems no longer hold, and intensional dependent type systems are highly sensitive to syntactic changes, including compilation. We develop an A-normal form (ANF) translation with join-point optimization, a standard translation for making control flow explicit in functional languages, from the Extended Calculus of Constructions (ECC) with dependent elimination of booleans and natural numbers (a representative subset of Coq). Our dependently typed target language has equality reflection, allowing the type system to encode semantic equality of terms. This is key to proving type preservation and correctness of separate compilation for this translation. This is the first ANF translation for dependent types. Unlike related translations, it supports the universe hierarchy, and does not rely on parametricity or impredicativity.
title: ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð±Ð¾ÑÑ ÑÐºÐ²Ð°Ð¶Ð¸Ð½Ñ Ð½Ð° Ð½ÐµÑÑÑÐ°Ð½Ð¾Ð²Ð¸Ð²ÑÐµÐ¼ÑÑ ÑÐµÐ¶Ð¸Ð¼Ðµ ÑÐµÑÐµÐ½Ð¸Ñ Ð´Ð»Ñ ÑÐ»ÑÑÐ°Ñ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ°Ð·Ð½Ð¾Ð³Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¸Ð¾ÑÑÐ¾Ð²ÑÐºÐ¸Ð¹, ÐÐµÐ¾ÑÐ³Ð¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÐÐµÑÑÑÐ½ÑÐµ Ð¸ Ð³Ð°Ð·Ð¾Ð²ÑÐµ Ð¼ÐµÑÑÐ¾ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ
ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
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Ð½ÐµÑÑÑÐ½Ð°Ñ ÑÐºÐ²Ð°Ð¶Ð¸Ð½Ð°
Ð½ÐµÑÑÑÐ½Ð¾Ð¹ Ð¸Ð½Ð¶Ð¸Ð½Ð¸ÑÐ¸Ð½Ð³
Ð¼Ð½Ð¾Ð³Ð¾ÑÐ°Ð·Ð½Ð¾Ðµ ÑÐµÑÐµÐ½Ð¸Ðµ
Ð½ÐµÑÑÑÐ°Ð½Ð¾Ð²Ð¸Ð²ÑÐ¸Ð¹ÑÑ ÑÐµÐ¶Ð¸Ð¼
Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐºÐ²Ð°Ð¶Ð¸Ð½Ñ Ð¿Ð¾ÑÐ»Ðµ Ð¾ÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð½ÐµÑÑÑÐ°Ð½Ð¾Ð²Ð¸Ð²ÑÐµÐ³Ð¾ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð° ÑÐ°Ð±Ð¾ÑÑ ÑÐºÐ²Ð°Ð¶Ð¸Ð½Ñ Ð¿Ð¾ÑÐ»Ðµ Ð³ÐµÐ¾Ð»Ð¾Ð³Ð¾-ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹ Ð¸ Ð¿ÑÐ¾ÑÐ¸Ñ Ð¾ÑÑÐ°Ð½Ð¾Ð²Ð¾Ðº Ð´Ð»Ñ ÑÐ»ÑÑÐ°Ñ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ°Ð·Ð½Ð¾Ð³Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ. ÐÐ»Ñ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð°Ñ ÑÑÐµÐ¼Ð°, ÐºÐ¾ÑÐ¾ÑÐ°Ñ Ð±ÑÐ»Ð° ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð½Ð°Ñ Ð½Ð° ÑÐ·ÑÐºÐµ Python. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ° Ð°Ð´Ð°Ð¿ÑÐ°ÑÐ¸Ð¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ð¿Ð»Ð°ÑÑÐ° (Ð¿ÑÐ¾Ð½Ð¸ÑÐ°ÐµÐ¼Ð¾ÑÑÑ, Ð¿Ð»Ð°ÑÑÐ¾Ð²Ð¾Ðµ Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¸ ÑÐºÐ¸Ð½-ÑÐ°ÐºÑÐ¾Ñ) Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¿ÑÐ¾Ð¼ÑÑÐ»Ð¾Ð²ÑÑ Ð´Ð°Ð½Ð½ÑÑ.
description: This paper presents a mathematical model of the transient mode of operation of a well after a well test and other shutdowns for the case of multiphase flow. For the presented model, a numerical scheme was generated, which was implemented in Python. A methodology for adapting reservoir parameters (permeability, reservoir pressure and skin factor) using field data is presented.
Table S1. Ecological classifications of diet and ecosystem; Table S2. Data sources; Supplementary Figure S1; Supplementary Figure S2 from Human density is associated with the increased prevalence of a generalist zoonotic parasite in mammalian wildlife
Creators: name: Wilson, Amy G.
name: Wilson, Scott
name: Alavi, Niloofar
name: Lapen, David R.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: List of published data sources used in global analysis.; PRISMA 2009 Flow Diagram; Density histogram showing sampling representation across A) Human Footprint Index, B) Human density people/km2, C) Cropland coverage, D) Annual precipitation (mm), E) Average temperature °C
Scale setting and the light baryon spectrum in $N_f=2+1$ QCD with Wilson fermions
Creators: name: Bali, Gunnar S.
name: Collins, Sara
name: Georg, Peter
name: Jenkins, Daniel
name: Korcyl, Piotr
name: Schäfer, Andreas
name: Scholz, Enno E.
name: Simeth, Jakob
name: Söldner, Wolfgang
name: Weishäupl, Simon
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the light baryon spectrum on ensembles generated by the Coordinated Lattice Simulations (CLS) effort, employing $N_f=2+1$ flavours of non-perturbatively improved Wilson fermions. The hadron masses are interpolated and extrapolated within the quark mass plane, utilizing three distinct trajectories, two of which intersect close to the physical quark mass point and the third one approaching the SU(3) chiral limit. The results are extrapolated to the continuum limit, utilizing six different lattice spacings ranging from $a\approx 0.10\,$fm down to below $0.04\,$fm. The light pion mass varies from $M_π\approx 429\,$MeV down to $127\,$MeV. In general, the spatial extent is kept larger than four times the inverse pion mass and larger than $2.3\,$fm, with additional small and large volume ensembles to investigate finite size effects. We determine the Wilson flow scales $\sqrt{t_{0,{\rm ph}}}=0.1449^{(7)}_{(9)}\,$fm and $t_0^*\approx t_{0,{\rm ph}}$ from the octet cascade ($Ξ$ baryon). Determining the light baryon spectrum in the continuum limit, we find the nucleon mass $m_N=941.7^{(6.5)}_{(7.6)}\,$MeV and the other stable baryon masses to agree with their experimental values within sub-percent level uncertainties. Moreover, we determine SU(3) and SU(2) chiral perturbation theory low energy constants, including the octet and the $Ω$ baryon sigma~terms $σ_{πN}=43.9(4.7)\,$MeV, $σ_{πΛ}=28.2^{(4.3)}_{(5.4)}\,$MeV, $σ_{πΣ}=25.9^{(3.8)}_{(6.1)}\,$MeV, $σ_{πΞ}=11.2^{(4.5)}_{(6.4)}\,$MeV and $σ_{πΩ}=6.9^{(5.3)}_{(4.3)}\,$MeV, as well as various parameters, renormalization factors and improvement coefficients that are relevant for simulations with our lattice action.
description: 132 pages, many figures. v2: reordered the content, improved cross linking, added some explanations, corrected typos, improved/corrected three figures, added one new comparison figure, updated the literature
Supersolid Phase of Cold Fermionic Polar Molecules in 2D Optical Lattices
Creators: name: He, Liang
name: Hofstetter, Walter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study a system of ultra-cold fermionic polar molecules in a two-dimensional square lattice interacting via both the long-ranged dipole-dipole interaction and a short-ranged on-site attractive interaction. Singlet superfluid, charge density wave, and supersolid phases are found to exist in the system. We map out the zero temperature phase diagram and find that the supersolid phase is considerably stabilized by the dipole-dipole interaction and thus can exist over a large region of filling factors. We study the melting of the supersolid phase with increasing temperature, map out a finite temperature phase diagram of the system at fixed filling, and determine the parameter region where the supersolid phase can possibly be observed in experiments.
description: 8 pages, 5 figures
data.ms.xls from Human density is associated with the increased prevalence of a generalist zoonotic parasite in mammalian wildlife
Creators: name: Wilson, Amy G.
name: Wilson, Scott
name: Alavi, Niloofar
name: Lapen, David R.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Toxoplasma gondii prevalence data for free-ranging mammalian wildlife
Revisiting the Quark-Lepton Complementarity and Triminimal Parametrization of Neutrino Mixing Matrix
Creators: name: Kang, Sin Kyu
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine how a parametrization of neutrino mixing matrix reflecting quark-lepton complementarity can be probed by considering phase-averaged oscillation probabilities, flavor composition of neutrino fluxes coming from atmospheric and astrophysical neutrinos and lepton flavor violating radiative decays. We discuss about some distinct features of the parametrization by comparing with the triminimal parametrization of perturbations to tri-bimaximal neutrino mixing matrix.
description: 9 pages, references added
Peak Effect of Flux Pinning in Sc5Ir4Si10 Superconductors
Creators: name: Sun, Y.
name: Shi, Z. X.
name: Gu, D. M.
name: Miura, M.
name: Tamegai, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Magnetic hysteresis loops (MHLs) have been comparatively measured on both textured and single crystalline Sc5Ir4Si10 superconductors. Critical current densities and flux pinning forces are calculated from MHLs by Bean model. Three kinds of peaks of the flux pinning force are found at low fields near zero, intermediated fields, and high fields near the upper critical field, respectively. The characters and origins of these peaks are studied in detail.
description: 6 pages, 9 figures, 1 table
Limits on Simultaneous and Delayed Optical Emission from Well-localized Fast Radio Bursts
Creators: name: Hiramatsu, Daichi
name: Berger, Edo
name: Metzger, Brian D.
name: Gomez, Sebastian
name: Bieryla, Allyson
name: Arcavi, Iair
name: Howell, D. Andrew
name: Mckinven, Ryan
name: Tominaga, Nozomu
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the largest compilation to date of optical observations during and following fast radio bursts (FRBs). The data set includes our dedicated simultaneous and follow-up observations, as well as serendipitous archival survey observations, for a sample of 15 well-localized FRBs: eight repeating and seven one-off sources. Our simultaneous (and nearly simultaneous with a $0.4$ s delay) optical observations of 13 (1) bursts from the repeating FRB 20220912A provide the deepest such limits to date for any extragalactic FRB, reaching a luminosity limit of $νL_ν\lesssim 10^{42}$ erg s$^{-1}$ ($\lesssim 2\times10^{41}$ erg s$^{-1}$) with $15-400$ s exposures; an optical-flux-to-radio-fluence ratio of $f_{\rm opt}/F_{\rm radio}\lesssim 10^{-7}$ ms$^{-1}$ ($\lesssim 10^{-8}$ ms$^{-1}$); and flux ratio of $f_{\rm opt}/f_{\rm radio}\lesssim 0.02-\lesssim 2\times 10^{-5}$ ($\lesssim 10^{-6}$) on millisecond to second timescales. These simultaneous limits provide useful constraints in the context of FRB emission models, such as the pulsar magnetosphere and pulsar nebula models. Interpreting all available optical limits in the context of the synchrotron maser model, we find that they constrain the flare energies to $\lesssim 10^{43}-10^{49}$ erg (depending on the distances of the various repeating FRBs, with $\lesssim 10^{39}$ erg for the Galactic SGR 1935+2154). These limits are generally at least an order of magnitude larger than those inferred from the FRBs themselves, although in the case of FRB 20220912A our simultaneous and rapid follow-up observations severely restrict the model parameter space. We conclude by exploring the potential of future simultaneous and rapid-response observations with large optical telescopes.
description: Updated to match the published letter in ApJL, 2023 April 26
Strong electron-phonon coupling and enhanced phonon Grüneisen parameters in valence-fluctuating metal EuPd$_2$Si$_2$
Creators: name: Ye, Mai
name: von Westarp, Mark Joachim Graf
name: Souliou, Sofia-Michaela
name: Peters, Marius
name: Möller, Robert
name: Kliemt, Kristin
name: Merz, Michael
name: Heid, Rolf
name: Krellner, Cornelius
name: Tacon, Matthieu Le
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the valence crossover and strong electron-phonon coupling of EuPd$_2$Si$_2$ by polarization-resolved Raman spectroscopy. The fully-symmetric phonon mode shows strongly asymmetric lineshape at low temperature, indicating Fano-type interaction between this mode and a continuum of electron-hole excitations. Moreover, the frequency and linewidth of the phonon modes exhibit anomalies across the valence-crossover temperature, suggesting the coupling between valence fluctuations and lattice vibration. In particular, two phonon modes show significantly enhanced Grüneisen parameter, suggesting proximity to a critical elasticity regime. The relative contribution of the structural change and valence change to the phonon anomalies is evaluated by density functional theory calculations.
Millicharged Relics Reveal Massless Dark Photons
Creators: name: Berlin, Asher
name: Dror, Jeff A.
name: Gan, Xucheng
name: Ruderman, Joshua T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The detection of massless kinetically-mixed dark photons is notoriously difficult, as the effect of this mixing can be removed by a field redefinition in vacuum. In this work, we study the prospect of detecting massless dark photons in the presence of a cosmic relic directly charged under this dark electromagnetism. Such millicharged particles, in the form of dark matter or dark radiation, generate an effective dark photon mass that drives photon-to-dark photon oscillations in the early universe. We also study the prospect for such models to alleviate existing cosmological constraints on massive dark photons, enlarging the motivation for direct tests of this parameter space using precision terrestrial probes.
description: 16 pages, 3 appendices, 6 figures; v2, minor improvements to the text, references added, results and conclusions unchanged
АСОСИЙ ЭКИН ШАРОИТИДА ЕТИШТИРИШ УЧУН ПАТИССОННИНГ ИСТИҚБОЛЛИ НАВ НАМУНАЛАРИНИ ТАНЛАШ.
Creators: name: Дурходжаев, Шавкат
name: Сативалдийев, Фурқатжон
name: Исмоилова, Севинч
name: Рамазонова, Маржона
Publisher: name: Zenodo
Year: 2024

description: Ушбу мақолада Ўзбекистон иқлим шароитида патиссон кўчатини етиштириш, турли муддатларда экиш ва унинг ўсиши, ривожланиши, ҳосилдорлиги, шунингдек об-ҳаво шароитларининг таъсири бўйича тадқиқотлар натижалари келтирилган. Паттисон-қовоқдошлар оиласининг бир йиллик ўсимлиги, асосан, бутасимон, камдан-кам ҳолларда қамчисимон шаклда бўлади. Пояси тик, қиррали, қаттиқ-попукли, тугунлар орасида қисқарган. Бутасимон қийшиқ поянинг узунлиги 30-60 см. мевалар яссиланган, пластинка шаклидаги ёки қўнғироқ шаклидаги, оқ ёки тўқ сариқ рангда. Униб чиққандан то товар маҳсулотларини олишгача бўлган давр 40-50 кунни ташкил этади. Тадқиқот натижаларига кўра Солнышко ва Фонарик Летающая тарелка навларини етиштиришда юқори маҳсулдорликка эришилди.
title: Ð£ÑÑÑ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½ÑÑ ÑÑÑÐµÐºÑÐ¾Ð² Ð¿ÑÐ¸ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð³Ð¸Ð´ÑÐ¾ÑÐ°Ð·ÑÑÐ²Ð° Ð¿Ð»Ð°ÑÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Consideration of temperature effects in modeling hydraulic fracturing
Creators: name: Ð¡Ð²ÐµÑÐ½Ð¸ÐºÐ¾Ð²Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð³Ð¸Ð´ÑÐ¾ÑÐ°Ð·ÑÑÐ² Ð¿Ð»Ð°ÑÑÐ°
ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½ÑÐµ ÑÑÑÐµÐºÑÑ
Ð¼Ð¾Ð´ÑÐ»Ñ planar3D
ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð¶Ð¸Ð´ÐºÐ¾ÑÑÐ¸
hydraulic fracturing
temperature effects
module planar3D
fluid properties

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½ÑÑ ÑÑÑÐµÐºÑÐ¾Ð² Ð½Ð° Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸Ñ ÑÑÐµÑÐ¸Ð½Ñ Ð³Ð¸Ð´ÑÐ¾ÑÐ°Ð·ÑÑÐ²Ð° Ð¿Ð»Ð°ÑÑÐ°. ÐÑÐ¸ Ð½Ð°Ð³ÑÐµÐ²Ð°Ð½Ð¸Ð¸ Ð¶Ð¸Ð´ÐºÐ¾ÑÑÐ¸ Ð¼ÐµÐ½ÑÑÑÑÑ ÐµÑ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐ°ÑÑÑÑÑ Ð² Ð´Ð²ÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð°Ñ: Ð±Ð°Ð·Ð¾Ð²Ð¾Ð¼ Ð¼Ð¾Ð´ÑÐ»Ðµ Planar3D Ð¸ Planar3D-T, ÑÑÐ¸ÑÑÐ²Ð°ÑÑÐµÐ³Ð¾ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ ÑÐ²Ð¾Ð¹ÑÑÐ² Ð¶Ð¸Ð´ÐºÐ¾ÑÑÐ¸ Ð¾Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ. ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð½Ð° ÑÐ¸Ð¼Ð¸Ñ Ð¶Ð¸Ð´ÐºÐ¾ÑÑÐ¸ Ð¸ ÑÐ²Ð¾Ð»ÑÑÐ¸Ñ ÑÑÐµÑÐ¸Ð½Ñ.
description: In this paper, the influence of temperature effects on the geometry of a hydraulic fracture is considered. When a liquid is heated, its properties change. Calculations were performed in two modules: the base Planar3D and Planar3D-T, which takes into account the temperature dependence of the fluid properties. The effects of temperature on fluid chemistry and fracture evolution are analyzed.
Joint Receiver Design for Integrated Sensing and Communications
Creators: name: Dong, Yuxiang
name: Liu, Fan
name: Xiong, Yifeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this letter, we investigate the joint receiver design for integrated sensing and communication (ISAC) systems, where the communication signal and the target echo signal are simultaneously received and processed to achieve a balanced performance between both functionalities. In particular, we proposed two design schemes to solve the joint sensing and communication problem of receive signal processing. {\color{black} The first is based on maximum likelihood (ML) detection, minimum mean squared error (MMSE) estimation and interference cancellation (IC), and the other formulates a tailored MMSE estimator for target estimation that is independent to the detector, which form a Non-IC design. We show that with the structural information of the communication signal taken into account, the Non-IC approach outperforms the IC method and achieves optimal performance.} Numerical results are provided to validate the effectiveness of the proposed optimal designs.
Effective field theory approach to Casimir interactions on soft matter surfaces
Creators: name: Yolcu, Cem
name: Rothstein, Ira Z.
name: Deserno, Markus
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We utilize an effective field theory approach to calculate Casimir interactions between objects bound to thermally fluctuating fluid surfaces or interfaces. This approach circumvents the complicated constraints imposed by such objects on the functional integration measure by reverting to a point particle representation. To capture the finite size effects, we perturb the Hamiltonian by DH that encapsulates the particles' response to external fields. DH is systematically expanded in a series of terms, each of which scales homogeneously in the two power counting parameters: λ\equiv R/r, the ratio of the typical object size (R) to the typical distance between them (r), and delta=kB T/k, where k is the modulus characterizing the surface energy. The coefficients of the terms in DH correspond to generalized polarizabilities and thus the formalism applies to rigid as well as deformable objects. Singularities induced by the point particle description can be dealt with using standard renormalization techniques. We first illustrate and verify our approach by re-deriving known pair forces between circular objects bound to films or membranes. To demonstrate its efficiency and versatility, we then derive a number of new results: The triplet interactions present in these systems, a higher order correction to the film interaction, and general scaling laws for the leading order interaction valid for objects of arbitrary shape and internal flexibility.
description: 4 pages, 1 figure
Straordinariamente forti
Creators: name: Pegorari, Valentina
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021
Subjects: accoglienza – dinamiche relazionali – socializzazione – identità competenti – benessere

description: Il lavoro propone ai bambini di una sezione di Scuola dell’Infanzia un percorso che porti alla scoperta delle proprie Identità Competenti e di quelle dei compagni. Nella prima parte dell’anno scolastico la sezione era caratterizzata dalla frammentarietà del gruppo: vi erano infatti poche interazioni tra i vari membri. Tramite l’intervento si è voluto consolidare la coscienza delle proprie abilità e una maggiore fiducia in esse, accrescere la conoscenza dei singoli e del gruppo, intensificare le relazioni interpersonali e migliorare il benessere in sezione. La raccolta dei dati è stata eseguita grazie all’utilizzo, in due momenti dell’anno, di una tabella e una griglia osservativa: la prima è volta a rilevare l’evoluzione dell’intero gruppo, l’altra è utilizzata per il monitoraggio di tre bambini. I dati sono stati arricchiti dalle osservazioni interessanti emerse dal diario di bordo. Nei bambini monitorati è possibile notare un’evoluzione per quanto riguarda i legami interpersonali: sono aumentate la presa di coscienza delle proprie competenze, l’apertura verso i bambini della sezione nonché l’accettazione e la ricerca da parte dei compagni. Un ampliamento della rete relazionale è altresì osservabile nel resto del gruppo. Relatrice: Veronica Simona Benhamza.
Topological quantum phase transitions and topological quantum criticality in superfluids and superconductors
Creators: name: Yang, Fan
Publisher: name: University of British Columbia
Year: 2021

description: Superfluids and superconductors can be either fully gapped or gapless with nodal structures in momentum space. Both the gapped and nodal phases can be topologically protected and possess nontrivial topological invariants. Topological quantum phase transitions exist at zero temperature between different gapped phases or between gapped and nodal phases. These phase transitions can be driven by chemical potential and/or spin exchange fields. The two phases separated by the phase transition can have the same local order but differ in global topology. Thus, these topological quantum phase transitions cannot be described by the Landau paradigm of symmetry breaking. Although some aspects of these transitions, such as the change of topological invariants and gapless boundary states, have been discussed before, a complete theory of these transitions has yet to be developed. In this dissertation, we construct effective field theories to study the universality and thermodynamic signatures of these transitions. We find four different universality classes in superfluids and superconductors. Certain thermodynamic quantities, such as compressibility or spin susceptibility, change non-analytically across the transitions. For certain time-reversal symmetry breaking fields that lead to bulk phase transitions, there also exist topological phase transitions on the surface. All the topological phase transitions studied in this dissertation only exist at zero temperature. At finite temperature, different states are connected by smooth crossovers. There exists a quantum critical region at finite temperature near the quantum critical point (QCP). In this quantum critical region, thermodynamic quantities have universal scaling dependence on temperature dictated by the universality class of the QCP. We argue that these scaling properties can be used to probe and differentiate these QCPs. These bulk and surface topological quantum phase transitions are discussed in various concrete models, such as chiral and time-reversal invariant p-wave superfluids, topological superconductors of emergent Dirac fermions, and topological superconducting model of CuₓBi₂Se₃.
Optical Study of GaAs quantum dots embedded into AlGaAs nanowires
Creators: name: Kats, V. N.
name: Kochereshko, V. P.
name: Platonov, A. V.
name: Chizhova, T. V.
name: Cirlin, G. E.
name: Bouravleuv, A. D.
name: Samsonenko, Yu. B.
name: Soshnikov, I. P.
name: Ubyivovk, E. V.
name: Bleuse, J.
name: Mariette, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the photoluminescence characterization of GaAs quantum dots embedded into AlGaAs nano-wires. Time integrated and time resolved photoluminescence measurements from both an array and a single quantum dot/nano-wire are reported. The influence of the diameter sizes distribution is evidenced in the optical spectroscopy data together with the presence of various crystalline phases in the AlGaAs nanowires.
description: 5 page, 5 figures
Spontaneous antiferromagnetic skyrmion/antiskyrmion lattice and spiral spin liquid states in the frustrated triangular lattice
Creators: name: Mohylna, M.
name: Albarracín, F. A. Gómez
name: Žukovič, M.
name: Rosales, H. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Magnetic skyrmions are topological quasiparticles of great interest for data storage applications because of their small size, high stability, and ease of manipulation via electric current. Antiferromagnetic (AF) skyrmions, with new features and huge benefits (ultra-small skyrmion sizes, no transverse deflection and efficient manipulation), have recently become the subject of intense focus. Here we show that a spontaneous antiferromagnetic skyrmion/antiskyrmion lattice (AF-SkL/ASkL) emerges in the classical Heisenberg antiferromagnet on the triangular-lattice under magnetic fields, taking only exchange interactions up to third nearest neighbors ($J_1$-$J_2$-$J_3$). By means of the Luttinger-Tisza approximation and large scale Monte-Carlo simulations (combining Parallel-Tempering and overrelaxation with the Metropolis algorithm), we present a rich $J_2$-$J_3$ magnetic phase diagram including exotic multiple-q phases, degenerate states and a spontaneous AF-SkL/ASkL lattice at intermediate magnetic fields. In addition, we show that at zero magnetic field, exotic spin liquid states with ring-like degeneracy emerge at intermediate temperatures, which are broken by thermal fluctuations selecting different multiple-q states. These findings greatly enrich the research on antiferromagnetic skyrmions in centrosymmetric materials or lattices including relatively weak Dzyaloshinskii-Moriya interaction.
description: 11 pages, 5 figures - Accepted for publication in Phys. Rev. B
Competing phases in spin-1/2 J1-J2 chain with easy-plane anisotropy
Creators: name: Sato, Masahiro
name: Furukawa, Shunsuke
name: Onoda, Shigeki
name: Furusaki, Akira
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We summarize our theoretical findings on the ground-state phase diagram of the spin-1/2 XXZ chain having competing nearest-neighbor (J1) and antiferromagnetic next-nearest-neighbor (J2) couplings. Our study is mainly concerned with the case of ferromagnetic J1, and the case of antiferromagnetic J1 is briefly reviewed for comparison. The phase diagram contains a rich variety of phases in the plane of J1/J2 versus the XXZ anisotropy Delta: vector-chiral phases, Néel phases, several dimer phases, and Tomonaga-Luttinger liquid phases. We discuss the vector-chiral order that appears for a remarkably wide parameter space, successive Néel-dimer phase transitions, and an emergent nonlocal string order in a narrow region of ferromagnetic J1 side.
description: 8 pages (1 column), 3 figures, published version