cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Circumstellar Medium Constraints on the Environment of Two Nearby Type Ia Supernovae: SN 2017cbv and SN 2020nlb
Creators: name: Sand, D. J.
name: Sarbadhicary, S. K.
name: Pellegrino, C.
name: Misra, K.
name: Dastidar, R.
name: Brown, P. J.
name: Itagaki, K.
name: Valenti, S.
name: Swift, J. J.
name: Andrews, J. E.
name: Bostroem, K. A.
name: Burke, J.
name: Chomiuk, L.
name: Dong, Y.
name: Galbany, L.
name: Graham, M. L.
name: Hiramatsu, D.
name: Howell, D. A.
name: Hsiao, E. Y.
name: Janzen, D.
name: Lundquist, M. J.
name: McCully, C.
name: Reichart, D.
name: Smith, N.
name: Wang, L.
name: Wyatt, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present deep Chandra X-ray observations of two nearby Type Ia supernovae, SN 2017cbv and SN 2020nlb, which reveal no X-ray emission down to a luminosity $L_X$$\lesssim$5.3$\times$10$^{37}$ and $\lesssim$5.4$\times$10$^{37}$ erg s$^{-1}$ (0.3--10 keV), respectively, at $\sim$16--18 days after the explosion. With these limits, we constrain the pre-explosion mass-loss rate of the progenitor system to be $\dot{M}$$
description: 19 pages, 6 figures, ApJ Accepted
On the Wilsonian renormalization group equation for nuclear current operators
Creators: name: Kvinikhidze, A. N.
name: Blankleider, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present the solution to the recently derived Wilsonian renormalization group (RG) equation for nuclear current operators. In order to eliminate the present ambiguity in the RG equation itself, we introduce a new condition specifying the cutoff independence of the five point Green function corresponding to the two-body propagator with current operator insertion. The resulting effective current operator is then shown to obey a modified Ward-Takahashi identity which differs from the usual one, but that nevertheless leads to current conservation.
description: 12 pages
Josef Pfitzner a protektorátní; Praha v letech 1939-1945. Svazek 1
Creators: name: Küpper, René
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2001

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 50 Nr. 1 (2001)
Probing Electron-Capture Supernovae: X-Ray Binaries in Starbursts
Creators: name: Linden, T.
name: Sepinsky, J. F.
name: Kalogera, V.
name: Belczynski, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Presenting population models of high-mass X-ray binaries (HMXBs) formed after bursts of star formation, we investigate the effect of electron-capture supernovae (ECS) of massive ONeMg white dwarfs and the hypothesis that ECS events are associated with typically low supernova kicks imparted to the nascent neutron stars. We identify an interesting ECS bump in the time evolution of HMXB numbers; this bump is caused by significantly increased production of wind-fed HMXBs 20-60 Myr post starburst. The amplitude and age extent of the ECS bump depend on the strength of ECS kicks and the mass range of ECS progenitors. We also find that ECS-HMXBs form through a specific evolutionary channel that is expected to lead to binaries with Be donors in wide orbits. These characteristics, along with their sensitivity to ECS properties, provide us with an intriguing opportunity to probe ECS physics and progenitors through studies of starbursts of different ages. Specifically, the case of the Small Magellanic Cloud, with a significant observed population of Be HMXBs and starburst activity 30-60 Myr ago, arises as a promising laboratory for understanding the role of electron-capture supernovae in neutron star formation.
description: 5 pages, 3 figures, Published by ApJ in 07/09
Extensions and degenerations of spectral triples
Creators: name: Christensen, Erik
name: Ivan, Cristina
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46L65; 58B34

description: For a unital C*-algebra A, which is equipped with a spectral triple and an extension T of A by the compacts, we construct a family of spectral triples associated to T and depending on the two positive parameters (s,t). Using Rieffel's notation of quantum Gromov-Hausdorff distance between compact quantum metric spaces it is possible to define a metric on this family of spectral triples, and we show that the distance between a pair of spectral triples varies continuously with respect to the parameters. It turns out that a spectral triple associated to the unitarization of the algebra of compact operators is obtained under the limit - in this metric - for (s,1) -> (0, 1), while the basic spectral triple, associated to A, is obtained from this family under a sort of a dual limiting process for (1, t) -> (1, 0). We show that our constructions will provide families of spectral triples for the unitarized compacts and for the Podles sphere. In the case of the compacts we investigate to which extent our proposed spectral triple satisfies Connes' 7 axioms for noncommutative geometry.
description: 40 pages. Addedd in ver. 2: Examples for the compacts and the Podle`s sphere plus comments on the relations to matricial quantum metrics. In ver.3 the word "deformations" in the original title has changed to "degenerations" and some illustrative remarks on this aspect are added
ELVES I: Structures of Dwarf Satellites of MW-like Galaxies; Morphology, Scaling Relations, and Intrinsic Shapes
Creators: name: Carlsten, Scott G.
name: Greene, Jenny E.
name: Greco, Johnny P.
name: Beaton, Rachael L.
name: Kado-Fong, Erin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The structure of a dwarf galaxy is an important probe into the effects of stellar feedback and environment. Using an unprecedented sample of 223 low-mass satellites from the ongoing Exploration of Local VolumE Satellites (ELVES) Survey, we explore the structures of dwarf satellites in the mass range $10^{5.5}
description: Submitted to ApJ. Comments welcome
Spin-charge coupling in a band ferromagnet: magnon-energy reduction, anomalous softening, and damping
Creators: name: Pandey, Sudhakar
name: Singh, Avinash
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effects of correlation-induced coupling between spin and charge fluctuations on spin-wave excitations in a band ferromagnet are investigated by including self-energy and vertex corrections within a systematic inverse-degeneracy expansion scheme which explicitly preserves the Goldstone mode. Arising from the scattering of a magnon into intermediate spin-excitation states (including both magnon and Stoner excitations) accompanied with charge fluctuations in the majority spin band, this spin-charge coupling results not only in a substantial reduction of magnon energies but also in anomalous softening and significant magnon damping for zone-boundary modes lying within the Stoner gap. Our results are in good qualitative agreement with recent spin-wave excitation measurements in colossal magneto-resistive manganites and ferromagnetic ultrathin films of transition metals.
description: 8 pages, 7 figures
Optimization of the growth of the van der Waals materials Bi2Se3 and (Bi0.5In0.5)2Se3 by molecular beam epitaxy
Creators: name: Wang, Zhengtianye
name: Law, Stephanie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The naturally existing chalcogenide Bi2Se3 is topologically nontrivial due to the band inversion caused by strong spin-orbit coupling inside the bulk of the material. The surface states are spin polarized, protected by the time-inversion symmetry, and thus robust to the scattering caused by non-magnetic defects. A high purity topological insulator thin film can be easily grown via molecular beam epitaxy (MBE) on various substrates to enable novel electronics, optics, and spintronics applications. However, the unique surface state properties have historically been limited by the film quality, which is evaluated by crystallinity, surface morphology, and transport data. Here we propose and investigate different MBE growth strategies to improve the quality of Bi2Se3 thin films grown by MBE. In addition, growths of topological trivial insulator (Bi0.5In0.5)2Se3 (BIS) are also investigated. BIS is often used as a buffer layer or separation layer for topological insulator heterostructures. Based on the surface passivation status, we have classified the substrates into two categories, self-passivated or unpassivated, and determine the optimal growth mechanisms on the representative sapphire and GaAs, respectively. Growth temperature is a crucial control parameter for the van der Waals epitaxy for both types of substrates. For Bi2Se3 on GaAs, the surface passivation status determines the dominant growth mechanism.
The Weizmann Fast Astronomical Survey Telescope (W-FAST): System Overview
Creators: name: Nir, Guy
name: Ofek, Eran O.
name: Ben-Ami, Sagi
name: Segev, Noam
name: Polishook, David
name: Hershko, Ofir
name: Diner, Oz
name: Manulis, Ilan
name: Zackay, Barak
name: Gal-Yam, Avishay
name: Yaron, Ofer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A relatively unexplored phase space of transients and stellar variability is that of second and sub-second time-scales. We describe a new optical observatory operating in the Negev desert in Israel, with a 55 cm aperture, a field of view of 2.6x2.6 deg (~7deg^2) equipped with a high frame rate, low read noise, CMOS camera. The system can observe at a frame rate of up to 90HZ (full frame), while nominally observations are conducted at 10-25Hz. The data, generated at a rate of over 6Gbits/s at a frame rate of 25Hz, are analyzed in real time. The observatory is fully robotic and capable of autonomously collecting data on a few thousand stars in each field each night. We present the system overview, performance metrics, science objectives, and some first results, e.g., the detection of a high rate of glints from geosynchronous satellites, reported in Nir et al. 2020.
description: 13 pages, 18 figures. Submitted to PASP
Sampling, rates, and reaction currents through reverse stochastic quantization on quantum computers
Creators: name: Mazzola, Guglielmo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The quest for improved sampling methods to solve statistical mechanics problems of physical and chemical interest proceeds with renewed efforts since the invention of the Metropolis algorithm, in 1953. In particular, the understanding of thermally activated rare-event processes between long-lived metastable states, such as protein folding, is still elusive. In this case, one needs both the finite-temperature canonical distribution function and the reaction current between the reactant and product states, to completely characterize the dynamic. Here we show how to tackle this problem using a quantum computer. We use the connection between a classical stochastic dynamics and the Schroedinger equation, also known as stochastic quantization, to variationally prepare quantum states allowing us to unbiasedly sample from a Boltzmann distribution. Similarly, reaction rate constants can be computed as ground state energies of suitably transformed operators, following the supersymmetric extension of the formalism. Finally, we propose a hybrid quantum-classical sampling scheme to escape local minima, and explore the configuration space in both real-space and spin hamiltonians. We indicate how to realize the quantum algorithms constructively, without assuming the existence of oracles, or quantum walk operators. The quantum advantage concerning the above applications is discussed.
description: Original submission date to the journal 12 April 2021
The building of English language identity through dictionaries and grammar books: Two case studies
Creators: name: Facchinetti, Roberta
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: The present paper focusses on the role the British lexico-grammatical tradition has had in shaping the identity of the English language through the centuries, shifting its focus gradually but steadily from Latin to English. To do so, attention will be drawn to the works of two scholars who contributed to the advancement of English in their own original way; specifically, the 16-c. lexicographer Peter Levins who authored the first English-Latin rhyming dictionary, and the 19th-c. grammarian Percival Leigh who published two comic grammars, one for Latin and one for English. Their works will be analysed as case studies testifying to the changes undergone in the ‘power-relation’ between English and Latin from the 16th to the 19th century.
Bounds for the second and the third derivatives of the electron density at the nucleus
Creators: name: Qian, Zhixin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Lower bound for ${\bar ρ}''(0)$, the second derivative of the spherically averaged atomic electronic density at the nucleus, and upper bound for ${\bar ρ}'''(0)$, the third derivative, are obtained respectively. It is shown that, for the ground state, ${\bar ρ}''(0) \ge {10/3} Z^2 ρ(0)$ and ${\bar ρ}'''(0) \le -{14/3}Z^3 ρ(0)$ where $Z$ is the charge of the nucleus, and $ρ(0)$ is the electron density at the nucleus. Tighter bounds for ${\bar ρ}''(0)$ and ${\bar ρ}'''(0)$ are also reported which are valid for both the ground state and excited states. Explicit illustration with the example of one-electron atomic ions is given.
description: 4 pages
The construction of women’s Quaker identity. A case study: Margaret Fell
Creators: name: Del Lungo Camiciotti, Gabriella
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: The article analyses the writings of Margaret Fell, the co-founder together with her husband George Fox of the Society of the Friends of God, commonly called the Quakers, in order to show that the contribution of dissenting women to the construction of the religious identity of the society was no less important than that of male members. As the corpus is mostly composed of letters, the article shows how the woman writer, in addition to contributing to the society’s collective identity, also constructs her multiple individual identity, which is not monolithic but multi-faced, as it varies according to the role of the recipient of her letters and the relationship between addressor and addressee. Margaret Fell’s writings can also be considered a form of autobiographical self-representation as she speaks with both a public and a private voice, thus revealing different facets of her personality.
Constructing a socially acceptable female identity:The case of nineteenth-century advice manualsfor women
Creators: name: Shvanyukova, Polina
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: In this study I conduct an exploratory corpus-based study of nineteenth-century advice manuals for women with a view to investigating the ways in which these texts ideologically and discursively construct a model of socially acceptable female identity. The analysis is based on a corpus of twenty advice manuals published in Britain between 1810 and 1878. By combining a quantitative analysis of keywords with manual investigation of concordance lines containing the most frequent keywords, I examine the parameters within which the model of socially acceptable female identity is discursively constructed. My analysis shows that, by learning to control their bodies, voices and speech, nineteenth-century women readers internalised the model presented in advice literature in order to become desirable to men of a good social position (Armstrong 2014).
Yvonne Luven, Der Kult der Hausschlange. Eine Studie zur Religionsgeschichte der Letten und Litauer
Creators: name: Scholz, Friedrich
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2001

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 50 Nr. 3 (2001)
Beate Kosmala, Juden und Deutsche im polnischen Haus. Tomaszów Mazowiecki 1914-1939
Creators: name: Pollmann, Viktoria
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 2 (2002)
Jan-Erik Beuttel, Der Generalprokurator des Deutschen Ordens an der Römischen Kurie
Creators: name: Militzer, Klaus
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2001

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 50 Nr. 3 (2001)
Halina Kowalczyk-Dudała, Edukacja historyczna mieszkańców Górnego Śląska w drugiej połowie XIX wieku i na początku XX wieku
Creators: name: Janus, Eligiusz
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 1 (2002)
Roland Gehrke, Der polnische Westgedanke bis zur Wiedererrichtung des polnischen Staates nach Ende des Ersten Weltkrieges. Genese und Begründung polnischer Gebiets-ansprüche gegenüber Deutschland im Zeitalter des eu
Creators: name: Hackmann, Jörg
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2002

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 51 Nr. 2 (2002)
Ralf Gebel, "Heim ins Reich!" Konrad Henlein und der Reichsgau Sudetenland (1938-1945)
Creators: name: Kučera, Jaroslav
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2001

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 50 Nr. 1 (2001)
Grenzen und Grenzräume in der deutschen und polnischen Geschichte. Scheidelinie oder Begegnungsraum
Creators: name: Lemberg, Hans
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2001

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 50 Nr. 3 (2001)
Discovering colonial India:The construal of discursive social identitiesin women’s travel writings
Creators: name: Samson, Christina
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: As a result of transportation development and socio-economic changes, 19th century upper middle class British women began travelling and discovering many countries of the British Empire of which they provided accounts. The objective of this study is to bring to the fore the recurring lexical features used in authentic non-literary Victorian women’s travel writings forming a corpus. This was especially compiled, by downloading digitalised texts available in dedicated sites with the purpose of analysing the relatively most frequent key words and clusters used to construe discursive social identities while interacting with different social groups encountered in India. The methodology adopted is a mixed one. It integrates a corpus assisted approach with discourse analysis of the emerging data. The results suggest Victorian women travellers used discourse not only to construe distinct social identities linked to their awareness of England’s role in India, and to demarcate their identity from the ‘other’ but also to highlight hybrid identities in the colonial socio-cultural context.
CHAOS VI: Direct Abundances in NGC 2403
Creators: name: Rogers, Noah S. J.
name: Skillman, Evan D.
name: Pogge, Richard W.
name: Berg, Danielle A.
name: Moustakas, John
name: Croxall, Kevin V.
name: Sun, Jiayi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the direct abundances for the galaxy NGC 2403 as observed by the CHemical Abundances Of Spirals (CHAOS) project. Using the Multi-Object Double Spectrograph on the Large Binocular Telescope, we observe two fields with H II regions that cover an R$_g$/R$_e$ range of 0.18 to 2.31. 32 H II regions contain at least one auroral line detection, and we detect a total of 122 temperature-sensitive auroral lines. Here, for the first time, we use the intrinsic scatter in the T$_e$-T$_e$ diagrams, added in quadrature to the uncertainty on the measured temperature, to determine the uncertainty on an electron temperature inferred for one ionization zone from a measurement in a different ionization zone. We then use all available temperature data within an H II region to obtain a weighted average temperature within each ionization zone. We re-derive the oxygen abundances of all CHAOS galaxies using this new temperature prioritization method, and we find that the gradients are consistent with the results of Berg et al. (2020). For NGC 2403, we measure a direct oxygen abundance gradient of -0.09($\pm$0.03) dex/Re, with an intrinsic dispersion of 0.037($\pm$0.017) dex, and an N/O abundance gradient of -0.17($\pm$0.03) dex/Re with an intrinsic dispersion of 0.060($\pm$0.018) dex. For direct comparison, we use the line intensities from the study of NGC 2403 by Berg et al. (2013), and find their recomputed values for the O/H and N/O gradients are consistent with ours.
description: 34 pages, 14 figures, accepted for publication in The Astrophysical Journal
The merger of OE pyncan and pencan
Creators: name: Ogura, Michiko
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: The development of Modern English think is often explained by the morphological merger of the two verbs þencan ‘to think’ and þyncan ‘to seem’ in early Middle English. This paper exemplifies that it is not the confusion between personal construction of þencan and ‘impersonal’ constructions of þyncan but the loss of contrast between < -e- > and < -i- > in the Northern dialect and other dialects, which leads to the merger of the two verbs that occurred with the present forms þence and þince, as well as the merger between < -u- > and < -ou- > in the preterite forms þohte and þuhte.
On Kuryłowicz’s notion of metrical equivalences in the light of Late Old English versified prayers
Creators: name: Opalińska, Monika
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: This paper aims to revive certain aspects of Jerzy Kuryłowicz’s studies on Old English meter. The analysis focuses on the notion of isomorphism between linguistic and metrical patterns, which was fundamental to his theory, and which became the cornerstone of modern metrical analysis. Special consideration is given to the problem of metrical equivalences and opacity in the light of late Old English versified prayers. Thus, this contribution to the analysis of Old English versification serves as a complement to some of Kuryłowicz’s important work, combining theoretical inquiry with data analysis of the sources in the vein of the methodology adopted by the renowned Polish linguist.
Agricultural development and fertility patterns in the dry zone of Sri Lanka, 1946-1971
Creators: name: Gansner, James Hill
Publisher: name: University of British Columbia
Year: 2010

description: The main objective of this study is to determine whether 1971 fertility differentials in Sri Lanka's dry zone can be explained in terms of agricultural development. It is hypothesized that agricultural development might be associated with low fertility due to the effects of agricultural development on intermediate variables found to be closely related to fertility in other studies. Yotopoulos work on the relation between economic development and fertility provides a useful theoretical frame. The methodology employed is path analysis. Findings indicate that agricultural development is not related to fertility differentials in Sri Lanka's dry zone. Differentials in fertility are explained primarily in terms of cultural factors, female education, female age at marriage, and family planning.
A New View of the Super Star Clusters in the Low-Metallicity Galaxy SBS 0335-052
Creators: name: Reines, Amy E.
name: Johnson, Kelsey E.
name: Hunt, Leslie K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study of the individual super star clusters (SSCs) in the low-metallicity galaxy SBS 0335-052 using new near-infrared and archival optical Hubble Space Telescope observations. The physical properties of the SSCs are derived from fitting model spectral energy distributions (SEDs) to the optical photometry, as well as from the H_alpha and Pa_alpha nebular emission. Among the clusters, we find a significant age spread that is correlated with position in the galaxy, suggesting successive cluster formation occurred in SBS 0335-052 triggered by a large-scale disturbance traveling through the galaxy at a speed of ~35 km/s. The SSCs exhibit I-band (~0.8 um) and near-IR (~1.6-2.1 um) excesses with respect to model SEDs fit to the optical data. We hypothesize that the I-band excess is dominated by a photoluminescent process known as Extended Red Emission; however, this mechanism cannot account for the excesses observed at longer near-IR wavelengths. From the cluster SEDs and colors, we find that the primary origin of the near-IR excess observed in the youngest SSCs (<3 Myr) is hot dust emission, while evolved red supergiants dominate the near-IR light in the older (>7 Myr) clusters. We also find evidence for a porous and clumpy interstellar medium (ISM) surrounding the youngest, embedded SSCs: the ionized gas emission underpredicts the expected ionizing luminosities from the optical stellar continuum, suggesting ionizing photons are leaking out of the immediate vicinity of the clusters before ionizing hydrogen. The corrected, intrinsic ionizing luminosities of the two SSCs younger than ~3 Myr are each ~ 5x10^52 s^-1, which is equivalent to each cluster hosting ~5000 O7.5 V stars. The inferred masses of these SSCs are ~10^6 M_sun.
description: Accepted for publication in the Astronomical Journal. 14 pages, 9 figures
Improved Slater approximation to SIC-OEP
Creators: name: Messud, J.
name: Dinh, P. M.
name: Reinhard, P. -G.
name: Suraud, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose a simplification of the Optimized Effective Potential (OEP) applied to the Self Interaction Correction (SIC) scheme of Density Functional Theory (DFT). The new scheme fulfills several key formal properties and turns out to be both simple and accurate. We show examples of applications on model molecules in terms of observables known to be especially sensitive to details of the SIC-OEP approach.
description: 3 figures
Heating up Galilean holography
Creators: name: Herzog, Christopher P.
name: Rangamani, Mukund
name: Ross, Simon F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We embed a holographic description of a quantum field theory with Galilean conformal invariance in string theory. The key observation is that such field theories may be realized as conventional superconformal field theories with a known string theory embedding, twisted by the R-symmetry in a light-like direction. Using the Null Melvin Twist, we construct the appropriate dual geometry and its non-extremal generalization. From the nonzero temperature solution we determine the equation of state. We also discuss the hydrodynamic regime of these non-relativistic plasmas and show that the shear viscosity to entropy density ratio takes the universal value one over four pi typical of strongly interacting field theories with gravity duals.
description: 27 pages; v2 refs, clarifying footnotes added; v3 A^4 counter-term included
Centrality-Weighted Opinion Dynamics: Disagreement and Social Network Partition
Creators: name: Gao, Shuang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a network model of opinion dynamics based on both the social network structure and network centralities. The conceptual novelty in this model is that the opinion of each individual is weighted by the associated network centrality in characterizing the opinion spread on social networks. Following a degree-centrality-weighted opinion dynamics model, we provide an algorithm to partition nodes of any graph into two and multiple clusters based on opinion disagreements. Furthermore, the partition algorithm is applied to real-world social networks including the Zachary karate club network [1] and the southern woman network [2] and these application examples indirectly verify the effectiveness of the degree-centrality-weighted opinion dynamics model. Finally, properties of general centrality-weighted opinion dynamics model are established.
Accretion discs, low-mass protostars and planets: probing the impact of magnetic fields on stellar formation
Creators: name: Donati, J. F.
name: Jardine, M. M.
name: Gregory, S. G.
name: Bouvier, J.
name: Dougados, C.
name: Menard, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Whereas the understanding of most phases of stellar evolution made considerable progress throughout the whole of the twentieth century, stellar formation remained rather enigmatic and poorly constrained by observations until about three decades ago, when major discoveries (e.g., that protostars are often associated with highly collimated jets) revolutionized the field. At this time, it became increasingly clearer that magnetic fields were playing a major role at all stages of stellar formation. We describe herein a quick overview of the main breakthroughs that observations and theoretical modelling yielded for our understanding of how stars (and their planetary systems) are formed and on how much these new worlds are shaped by the presence of magnetic fields, either those pervading the interstellar medium and threading molecular clouds or those produced through dynamo processes in the convective envelopes of protostars or in the accretion discs from which they feed.
description: Proceedings of CNRS/PNPS astrophysical school on "stellar magnetic fields", EAS Publications Series
M5 Competition Uncertainty: Overdispersion, distributional forecasting, GAMLSS and beyond
Creators: name: Ziel, Florian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: G.3; I.2; I.6
subject: 62M10, 62J07, 62P30, 62P12, 37M10, 90B05

description: The M5 competition uncertainty track aims for probabilistic forecasting of sales of thousands of Walmart retail goods. We show that the M5 competition data faces strong overdispersion and sporadic demand, especially zero demand. We discuss resulting modeling issues concerning adequate probabilistic forecasting of such count data processes. Unfortunately, the majority of popular prediction methods used in the M5 competition (e.g. lightgbm and xgboost GBMs) fails to address the data characteristics due to the considered objective functions. The distributional forecasting provides a suitable modeling approach for to the overcome those problems. The GAMLSS framework allows flexible probabilistic forecasting using low dimensional distributions. We illustrate, how the GAMLSS approach can be applied for the M5 competition data by modeling the location and scale parameter of various distributions, e.g. the negative binomial distribution. Finally, we discuss software packages for distributional modeling and their drawback, like the R package gamlss with its package extensions, and (deep) distributional forecasting libraries such as TensorFlow Probability.
A case study of ACV variables discovered in the Zwicky Transient Facility survey
Creators: name: Faltová, N.
name: Kallová, K.
name: Prišegen, M.
name: Staněk, P.
name: Supíková, J.
name: Xia, C.
name: Bernhard, K.
name: Hümmerich, S.
name: Paunzen, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Magnetic chemically peculiar (mCP) stars exhibit complex atmospheres that allow the investigation of the interplay of atomic diffusion, magnetic fields, and stellar rotation. A non-uniform surface distribution of chemical elements and the non-alignment of the rotational and magnetic axes result in the variability of several observables. Photometrically variable mCP stars are referred to as alpha2 Canum Venaticorum (ACV) variables. The present work presents a case study of known variables from the Zwicky Transient Facility (ZTF) survey, with the aim of investigating the survey's suitability for the detection and study of new ACV variables. Using suitable selection criteria based on the known characteristics of ACV variables, candidate ACV stars were selected from the ZTF Catalog of Periodic Variable Stars. All light curves were inspected in detail to select the most promising candidates. Where available, low-resolution spectra from the LAMOST were employed to classify the stars on the MK system and confirm their status as mCP stars. We have identified 86 new promising ACV star candidates. 15 of these stars have LAMOST spectra available, which, in all cases, confirm them as classical mCP stars, which highlights the viability of our approach. The sample stars can be sorted into four subgroups characterized by distinct light curve shapes. Anti-phase variations in different photometric passbands, in particular, is a unique characteristic of a subset of ACV stars readily usable for their identification. The availability of data in three different passbands (g, r, and i) is a major advantage of the ZTF survey. On the basis of our experience with other photometric surveys and the analysis of light curves, we conclude that the ZTF is well suited for the search for, and the analysis of, ACV variables, which, however, are not considered in the available ZTF variable star catalogues.
description: 17 pages, 8 figures, 2 tables, accepted for Astronomy & Astrophysics
Optimal observing strategies for velocity-suppressed dark matter annihilation
Creators: name: Smyth, Nolan
name: Huckabee, Gabriela
name: Profumo, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Numerous particle models for the cosmological dark matter feature a pair-annihilation rate that scales with powers of the relative velocity between the annihilating particles. As a result, the annihilation rate in the central regions of a dark matter halo can be significantly lower than at the halo's periphery for particular ambient gravitational potentials. While this might be offset by an increasing dark matter pair number density in the inner halo, it raises the question: what angular region for dark matter models with velocity-suppressed annihilation rates optimizes signal-to-noise? Here, we consider simplified background models for galactic and extragalactic targets and demonstrate that the optimal observing strategy varies greatly case-by-case. Generally, a bright central source warrants an annular region of interest, while a flatter background warrants as large as possible an angular region, possibly including the central regions.
description: 9 pages, 7 figures. Comments welcome
The Natural Explanation of the Muon Anomalous Magnetic Moment via the Electroweak Supersymmetry from the GmSUGRA in the MSSM
Creators: name: Ahmed, Waqas
name: Khan, Imtiaz
name: Li, Jinmian
name: Li, Tianjun
name: Raza, Shabbar
name: Zhang, Wenxing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Fermi-Lab Collaboration has announced the results for the measurement of muon anomalous magnetic moment. Combining with the previous results by the BNL experiment, we have $4.2 σ$ deviation from the Standard Model (SM), which strongly implies the new physics around 1 TeV. To explain the muon anomalous magnetic moment naturally, we analyze the corresponding five Feynman diagrams in the Supersymetric SMs (SSMs), and show that the Electroweak Supersymmetry (EWSUSY) is definitely needed. We realize the EWSUSY in the Minimal SSM (MSSM) with Genernalized Mininal Supergravity (GmSUGRA). We find large viable parameter space, which is consistent with all the current experimental constraints. In particular, the Lightest Supersymmetric Particle (LSP) neutralino can be at least as heavy as 550 GeV. Most of the viable parameter space can be probed at the future HL-LHC, while we do need the future HE-LHC to probe some viable parameter space. However, it might still be challenge if R-parity is violated.
description: 6 pages, 3 figures
กลยุทธ์การจัดการเรียนรู้วิทยาศาสตร์เพื่อก้าวสู่ประชาคมอาเซียน
Creators: name: อาภาพร สิงหราช
Publisher: name: บริษัท เค พี จำกัด
Year: 2556
Subjects: Strategies, learning science, ASEAN community

description: 1, 8, วารสารบัณฑิตวิทยาลัย มหาวิทยาลัยราชภัฏจันทรเกษม
Polar Fluctuations Lead to Extensile Nematic Behavior in Confluent Tissues
Creators: name: Killeen, Andrew
name: Bertrand, Thibault
name: Lee, Chiu Fan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: How can a collection of motile cells, each generating contractile nematic stresses in isolation, become an extensile nematic at the tissue-level? Understanding this seemingly contradictory experimental observation, which occurs irrespective of whether the tissue is in the liquid or solid states, is not only crucial to our understanding of diverse biological processes, but is also of fundamental interest to soft matter and many-body physics. Here, we resolve this cellular to tissue level disconnect in the small fluctuation regime by using analytical theories based on hydrodynamic descriptions of confluent tissues, in both liquid and solid states. Specifically, we show that a collection of microscopic constituents with no inherently nematic extensile forces can exhibit active extensile nematic behavior when subject to polar fluctuating forces. We further support our findings by performing cell level simulations of minimal models of confluent tissues.
description: 6 pages main text + 14 pages of Supplemental Materials. Version 2 contains new simulation and analytical results
วิธีการแก้สมการเชิงเส้นของนักเรียนช่วงชั้นที่ 4  อำเภอเมือง จังหวัดมหาสารคาม
Creators: name: วิจิตรา ใจซื่อ
name: อรัญ ซุยกระเดื่อง
name: สมทรง สุวพานิช
name: อภิชัย แพนพา
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2008
Subjects: วิธีการแก้สมการเชิงเส้น, ช่วงชั้นที่ 4, จังหวัดมหาสารคาม

description: 2, 2, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
Discovery of a young pre-intermediate polar
Creators: name: Wilson, David J.
name: Toloza, Odette
name: Landstreet, John D.
name: Gaensicke, Boris T.
name: Drake, Jeremy J.
name: Hermes, J. J.
name: Koester, Detlev
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the discovery of a magnetic field on the white dwarf component in the detached post common envelope binary (PCEB) CC Cet. Magnetic white dwarfs in detached PCEBs are extremely rare, in contrast to the high incidence of magnetism in single white dwarfs and cataclysmic variables. We find Zeeman-split absorption lines in both ultraviolet Hubble Space Telescope (HST) spectra and archival optical spectra of CC Cet. Model fits to the lines return a mean magnetic field strength of approximately 600-700 kG. Differences in the best-fit magnetic field strength between two separate HST observations and the high v sin i of the lines indicate that the white dwarf is rotating with a period ~0.5 hours, and that the magnetic field is not axisymmetric about the spin axis. The magnetic field strength and rotation period are consistent with those observed among the intermediate polar class of cataclysmic variable, and we compute stellar evolution models that predict CC Cet will evolve into an intermediate polar in 7-17 Gyr. Among the small number of known PCEBs containing a confirmed magnetic white dwarf, CC Cet is the hottest (and thus youngest), with the weakest field strength, and cannot have formed via the recently proposed crystallisation/spin-up scenario. In addition to the magnetic field measurements, we update the atmospheric parameters of the CC Cet white dwarf via model spectra fits to the HST data and provide a refined orbital period and ephemeris from TESS photometry.
description: Accepted for publication in MNRAS
Comments on string theory backgrounds with non-relativistic conformal symmetry
Creators: name: Maldacena, Juan
name: Martelli, Dario
name: Tachikawa, Yuji
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider non-relativistic conformal quantum mechanical theories that arise by doing discrete light cone quantization of field theories. If the field theory has a gravity dual, then the conformal quantum mechanical theory can have a gravity dual description in a suitable finite temperature and finite density regime. Using this we compute the thermodynamic properties of the system. We give an explicit example where we display both the conformal quantum mechanical theory as well as the gravity dual. We also discuss the string theory embedding of certain backgrounds with non-relativistic conformal symmetry that were recently discussed. Using this, we construct finite temperature and finite density solutions, with asymptotic non-relativistic conformal symmetry. In addition, we derive consistent Kaluza-Klein truncations of type IIB supergravity to a five dimensional theory with massive vector fields.
description: 51 pages. v5: New appendix F added on simple scaling properties of thermodynamic quantities
Andre Agassi, Open. An Autobiography  (London, Harpercollins, 2009, 388 pp. ISBN 978-000-728-1435)
Creators: name: Caponi, Paolo
Publisher: name: Università degli  Studi di Milano
Year: 2014

description: Andre Agassi, Open. An Autobiography

(London, Harpercollins, 2009, 388 pp. ISBN 978-000-728-1435)
description: Altre Modernità, No 12 (2014): MANDELA
Schwinger Mechanism and Hawking Radiation as Quantum Tunneling
Creators: name: Kim, Sang Pyo
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The common interpretation of the Hawking radiation as quantum tunneling has some ambiguity such as coordinate-dependence of tunneling rate and non-invariance of the action under canonical transformations. It is shown that the tunneling process of black holes can be successfully described by Rindler coordinates in analogy with the Schwinger mechanism for pair production. We study the tunneling process of a charged black hole and a BTZ black hole.
description: Revtex4, 5 pages, 1 figure. To appear in the proceedings of the 10th Asia Pacific Physics Conference (APPC10), Pohang, Korea, 21-24 Aug. 2007
Parallel fitt-endings in Sir Gawain and the Green Knight: A case of medieval paratextuality
Creators: name: Kowalik, Barbara Janina
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: This paper examines the endings of the so-called fitts in Sir Gawain and the Green Knight. For the first time in the criticism of this renowned fourteenth-century alliterative romance of the Matter of Britain attention is called to a remarkable number of lexical and thematic features shared by the concluding sections of the poem’s four compositional divisions. It is argued that the parallel fitt-endings serve to underline the units of Gawain as an orally delivered Arthurian narrative of the kind that was used as a form of entertainment at medieval round tables and generally at court. The rationale behind the parallel fittendings is discussed in terms of paratextuality, with emphasis on such typical paratextual effects as pointing to the genre and the mode of the text in question. Paratexts peculiar to medieval literature and to Middle English alliterative romance are pointed out.
Enhanced X-ray Emission Coinciding with Giant Radio Pulses from the Crab Pulsar
Creators: name: Enoto, Teruaki
name: Terasawa, Toshio
name: Kisaka, Shota
name: Hu, Chin-Ping
name: Guillot, Sebastien
name: Lewandowska, Natalia
name: Malacaria, Christian
name: Ray, Paul S.
name: Ho, Wynn C. G.
name: Harding, Alice K.
name: Okajima, Takashi
name: Arzoumanian, Zaven
name: Gendreau, Keith C.
name: Wadiasingh, Zorawar
name: Markwardt, Craig B.
name: Soong, Yang
name: Kenyon, Steve
name: Bogdanov, Slavko
name: Majid, Walid A.
name: Güver, Tolga
name: Jaisawal, Gaurava K.
name: Foster, Rick
name: Murata, Yasuhiro
name: Takeuchi, Hiroshi
name: Takefuji, Kazuhiro
name: Sekido, Mamoru
name: Yonekura, Yoshinori
name: Misawa, Hiroaki
name: Tsuchiya, Fuminori
name: Aoki, Takahiko
name: Tokumaru, Munetoshi
name: Honma, Mareki
name: Kameya, Osamu
name: Oyama, Tomoaki
name: Asano, Katsuaki
name: Shibata, Shinpei
name: Tanaka, Shuta J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Giant radio pulses (GRPs) are sporadic bursts emitted by some pulsars, lasting a few microseconds. GRPs are hundreds to thousands of times brighter than regular pulses from these sources. The only GRP-associated emission outside radio wavelengths is from the Crab Pulsar, where optical emission is enhanced by a few percent during GRPs. We observed the Crab Pulsar simultaneously at X-ray and radio wavelengths, finding enhancement of the X-ray emission by $3.8\pm0.7\%$ (a 5.4$σ$ detection) coinciding with GRPs. This implies that the total emitted energy from GRPs is tens to hundreds of times higher than previously known. We discuss the implications for the pulsar emission mechanism and extragalactic fast radio bursts.
description: 63 pages, 23 figures, 7 Tables. Published in Science
Similarity measurements in tracing textual affinities: A study of Psalm 129 in 16th-century devotional manuals
Creators: name: Charzyńska-Wójcik, Magdalena
name: Wójcik, Jerzy
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2022

description: The paper examines 30 instances of Psalm 129 in 16th-century English devotional manuals printed during the reign of the first three Tudor monarchs. The objective of the study is to detect relationships between the analysed texts and compare them to available Psalter translations to determine textual affinities. This is achieved by applying similarity measurements which can capture intertextual relations in mathematical terms. The obtained results are subsequently verified against the available textual and philological knowledge, which corroborates the similarity scores of individual texts. In the single instance where similarity scores seem to be defied by the information provided in the literature on the topic, textual analysis proves the applied method right. The examination presented in the paper shows that English devotional practices in the turbulent period when they were emerging were much more complex than the purely denominational differences between Catholics and Reformers (often misconceived from the present-day perspective) might suggest.