cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Dunkl Analogue of Operators Including Two-variable Hermite polynomials
Creators: name: Aktaş, Rabia
name: Çekim, Bayram
name: Taşdelen, Fatma
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: The aim of this paper is to introduce a Dunkl generalization of the operators including two variable Hermite polynomials which are defined by Krech [14](Krech, G. A note on some positive linear operators associated with the Hermite polynomials, Carpathian J. Math., 32 (1) (2016), 71--77) and to investigate approximating properties for these operators by means of the classical modulus of continuity, second modulus of continuity and Peetre's K-functional.
Quantum eigenstate tomography with qubit tunneling spectroscopy
Creators: name: Smirnov, Anatoly Yu.
name: Amin, Mohammad H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Measurement of the energy eigenvalues (spectrum) of a multi-qubit system has recently become possible by qubit tunneling spectroscopy (QTS). In the standard QTS experiments, an incoherent probe qubit is strongly coupled to one of the qubits of the system in such a way that its incoherent tunneling rate provides information about the energy eigenvalues of the original (source) system. In this paper, we generalize QTS by coupling the probe qubit to many source qubits. We show that by properly choosing the couplings, one can perform projective measurements of the source system energy eigenstates in an arbitrary basis, thus performing quantum eigenstate tomography. As a practical example of a limited tomography, we apply our scheme to probe the eigenstates of a kink in a frustrated transverse Ising chain.
description: 8 pages, 4 figures
Three-body charmless baryonic $\bar B^0_s$ decays
Creators: name: Geng, C. Q.
name: Hsiao, Y. K.
name: Rodrigues, Eduardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study for the first time the three-body charmless baryonic decays $\bar B^0_s\to \bar p ΛM^+ (p \bar ΛM^-)$, with $M=π, K$. We find that the branching ratios of $\bar B^0_s\to (\bar p ΛK^+$ and $p\bar ΛK^-)$ and $\bar B^0_s\to p\bar Λπ^-$ are $(5.1\pm 1.1)\times 10^{-6}$ and $(2.8\pm 1.5)\times 10^{-7}$, respectively, which agree with recent experimental results reported by the LHCb collaboration. In addition, we derive the relations \mbox{${\cal B}(\bar B^0_s\to \bar p ΛK^+)\simeq (f_K/f_π)^2(τ_{B^0_s}/τ_{B^0}) {\cal B}(\bar B^0\to \bar p Λπ^+)$} and ${\cal B}(\bar B^0_s\to p\bar Λπ^-)/{\cal B}(\bar B^0_s\to p\bar ΛK^-)\simeq {\cal B}(B^-\to p\bar p π^-)/{\cal B}(B^-\to p\bar p K^-)$ to be confronted to future experimental measurements. The fact that all four processes $B^0_s, \bar B^0_s \to p\bar ΛK^-, \bar p ΛK^+$ can occur opens the possibility of decay-time-dependent CP violation measurements in baryonic $B$ decays, something that had not been realised before.
description: 9 pages, 2 figures
Spectroscopy, Decay properties and Regge trajectories of the $B$ and $B_s$ mesons
Creators: name: Kher, Virendrasinh
name: Devlani, Nayneshkumar
name: Rai, Ajay Kumar
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A Gaussian wave function is used for detailed study of mass spectra of the $B$ and $B_S$ mesons using a Cornell potential incorporated with a $\mathcal{O}(1/m)$ correction in the potential energy term and expansion of the kinetic energy term up to a ${\cal{O}\left({\bf p}^{10}\right)}$ for relativistic correction of the Hamiltonian. The predicted excited states for the $B$ and $B_s$ mesons are in very good agreement with results obtained by experiment. We assigned the $B_{2}(5747)$ and $B_{s2}(5840)$ as $1^{3}p_{2}$ state, the $B_{1}(5721)$ and $B_{s1}(5830)$ as $1 p_{1}$ state, the $B_{0}(5732)$ as $1^{3}p_{0}$ state, the $B_{s1}(5850)$ as $1p_{1}^{'}$ state and the $B(5970)$ as $2^{3}S_{1}$ state. We investigate the Regge trajectories in the $(J,M^{2})$ and $(n_r,M^{2})$ planes with their corresponding parameters. Branching ratio for leptonic and radiative-leptonic decays are estimated for the $B$ and $B_S$ mesons. Our results are in good agreement with experimental observation as well as outcomes of other theoretical models.
description: 17 pages, 10 figures and 12 tables, it is to be published in Chinese Physics C. arXiv admin note: text overlap with arXiv:1704.00439
On large lepton number asymmetries of the Universe
Creators: name: Barenboim, Gabriela
name: Park, Wan-Il
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A large lepton number asymmetry of $\mathcal{O}(0.1-1)$ at present universe might not only be allowed but also necessary for consistency among cosmological data. We show that, if a sizeable lepton number asymmetry were produced before the electroweak phase transition, the requirement for not producing too much baryon number asymmetry through sphalerons processes, forces the high scale lepton number asymmetry to be larger than about $30$. Therefore a mild entropy release causing $\mathcal{O}(10-100)$ suppression of pre-existing particle density should take place, when the background temperature of the universe is around $T = \mathcal{O}(10^{-2} - 10^2) {\rm GeV}$ for a large but experimentally consistent asymmetry to be present today. We also show that such a mild entropy production can be obtained by the late-time decays of the saxion, constraining the parameters of the Peccei-Quinn sector such as the mass and the vacuum expectation value of the saxion field to be $m_ϕ\gtrsim \mathcal{O}(10) {\rm TeV}$ and $ϕ_0 \gtrsim \mathcal{O}(10^{14}) {\rm GeV}$, respectively.
description: 6 pages, 2 figures
Colloidal spirals in nematic liquid crystals
Creators: name: Senyuk, Bohdan
name: Pandey, Manoj B.
name: Liu, Qingkun
name: Tasinkevych, Mykola
name: Smalyukh, Ivan I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: One of the central experimental efforts in nematic colloids research aims to explore how the interplay between the geometry of particles along with the accompanying nematic director deformations and defects around them can provide a means of guiding particle self-assembly and controlling the structure of particle-induced defects. In this work, we design, fabricate, and disperse low-symmetry colloidal particles with shapes of spirals, double spirals, and triple spirals in a nematic fluid. These spiral-shaped particles, which are controlled by varying their surface functionalization to provide tangential or perpendicular boundary conditions of the nematic molecular alignment, are found inducing director distortions and defect configurations with non-chiral or chiral symmetry. Colloidal particles also exhibit both stable and metastable multiple orientational states in the nematic host, with a large number of director configurations featuring both singular and solitonic nonsingular topological defects accompanying them, which can result in unusual forms of colloidal self-assembly. Our findings directly demonstrate how the symmetry of particle-generated director configurations can be further lowered, or not, as compared to the low point group symmetry of solid micro-inclusions, depending on the nature of induced defects while satisfying topological constraints. We show that achiral colloidal particles can cause chiral symmetry breaking of elastic distortions, which is driven by complex three-dimensional winding of induced topological line defects and solitons.
SDSS J105754.25+275947.5: a period-bounce eclipsing cataclysmic variable with the lowest-mass donor yet measured
Creators: name: McAllister, M. J.
name: Littlefair, S. P.
name: Dhillon, V. S.
name: Marsh, T. R.
name: Gänsicke, B. T.
name: Bochinksi, J.
name: Bours, M. C. P.
name: Breedt, E.
name: Hardy, L. K.
name: Hermes, J. J.
name: Kengkriangkrai, S.
name: Kerry, P.
name: Parsons, S. G.
name: Rattanasoon, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high-speed, multicolour photometry of the faint, eclipsing cataclysmic variable (CV) SDSS J105754.25+275947.5. The light from this system is dominated by the white dwarf. Nonetheless, averaging many eclipses reveals additional features from the eclipse of the bright spot. This enables the fitting of a parameterised eclipse model to these average light curves, allowing the precise measurement of system parameters. We find a mass ratio of q = 0.0546 $\pm$ 0.0020 and inclination i = 85.74 $\pm$ 0.21$^{\circ}$. The white dwarf and donor masses were found to be M$_{\mathrm{w}}$ = 0.800 $\pm$ 0.015 M$_{\odot}$ and M$_{\mathrm{d}}$ = 0.0436 $\pm$ 0.0020 M$_{\odot}$, respectively. A temperature T$_{\mathrm{w}}$ = 13300 $\pm$ 1100 K and distance d = 367 $\pm$ 26 pc of the white dwarf were estimated through fitting model atmosphere predictions to multicolour fluxes. The mass of the white dwarf in SDSS 105754.25+275947.5 is close to the average for CV white dwarfs, while the donor has the lowest mass yet measured in an eclipsing CV. A low-mass donor and an orbital period (90.44 min) significantly longer than the period minimum strongly suggest that this is a bona fide period-bounce system, although formation from a white dwarf/brown dwarf binary cannot be ruled out. Very few period-minimum/period-bounce systems with precise system parameters are currently known, and as a consequence the evolution of CVs in this regime is not yet fully understood.
description: 10 pages, 7 figures, to be published in Monthly Notices of the Royal Astronomical Society (MNRAS)
The Implicitly Constructible Universe
Creators: name: Groszek, Marcia J.
name: Hamkins, Joel David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We answer several questions posed by Hamkins and Leahy concerning the implicitly constructible universe, Imp. Specifically, we show that it is relatively consistent with ZFC that Imp satisfies the negation of CH, that Imp is not HOD, and that Imp satisfies V $\neq$ Imp, or in other words, that $(Imp)^{Imp}\neq Imp$.
description: 20 pages. Commentary concerning this article can be made on the second author's blog at http://jdh.hamkins.org/the-implicitly-constructible-universe
A Curved Magnetic field in the ring-like shell of bubble N4
Creators: name: Chen, Zhiwei
name: Jiang, Zhibo
name: Tamura, Motohide
name: Kwon, Jungmi
name: Roman-Lopes, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of a curved magnetic field in the ring-like shell of the bubble N4, derived from near-infrared polarization of reddened diskless stars located behind this bubble. The magnetic field in the shell is curved and parallel to the ring-like shell, and its strength is estimated to be $\sim120\,μ$G in the plane of the sky. The magnetic field strength in the shell is significantly enhanced compared to the local field strength. We calculate the mass-to-flux ratio for the submillimeter clumps in the shell and find that they are all magnetically subcritical. Our results demonstrate that the magnetic field strengthens as the interstellar medium is compressed into a shell, and suggest that the magnetic field has the potential to hinder star formation triggered by \ion{H}{2} region expansion.
description: press in ApJ
Measures of coherence generating power for quantum unital operations
Creators: name: Zanardi, Paolo
name: Styliaris, Georgios
name: Venuti, Lorenzo Campos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Given an orthonormal basis in a $d$-dimensional Hilbert space and a unital quantum operation $\cal E$ acting on it one can define a non-linear mapping that associates to $\cal E$ a $d\times d$ real-valued matrix that we call the Coherence Matrix of $\cal E$ with respect to $B$. We show that one can use this coherence matrix to define vast families of measures of the coherence generating power (CGP) of the operation. These measures have a natural geometrical interpretation as separation of $\cal E$ from the set of incoherent unital operations. The probabilistic approach to CGP discussed in P. Zanardi et al., arXiv:1610.00217 can be reformulated and generalized introducing, alongside the coherence matrix, another $d\times d$ real-valued matrix, the Simplex Correlation Matrix. This matrix describes the relevant statistical correlations in the input ensemble of incoherent states. Contracting these two matrices one finds CGP measures associated with the process of preparing the given incoherent ensemble and processing it with the chosen unital operation. Finally, in the unitary case, we discuss how these concepts can be made compatible with an underlying tensor product structure by defining families of CGP measures that are additive.
Heavy neutrino potential for neutrinoless double beta decay
Creators: name: Iwata, Yoritaka
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Heavy neutrino potential for neutrinoless double beta decay is studied with focusing on its statistical property. The existence condition for heavy neutrinos is also presented. In particular sterile neutrinos are possible candidate for heavy nuetrinos. The statistics provide a gross view of understanding amplitude of constitutional components of the nuclear matrix element.
description: To be published in Proc. Sci. (oral presentation at INPC 2016)
Concomitant enhancement of longitudinal spin Seebeck effect with thermal conductivity
Creators: name: Iguchi, Ryo
name: Uchida, Ken-ichi
name: Daimon, Shunsuke
name: Saitoh, Eiji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a simultaneous measurement of a longitudinal spin Seebeck effect (LSSE) and thermal conductivity in a Pt/${\rm Y_{3}Fe_{5}O_{12}}$ (YIG)/Pt system in a temperature range from 10 to 300 K. By directly monitoring the temperature difference in the system, we excluded thermal artifacts in the LSSE measurements. It is found that both the LSSE signal and the thermal conductivity of YIG exhibit sharp peaks at the same temperature, differently from previous reports. The maximum LSSE coefficient is found to be $S{\rm_{LSSE}}>10\ μ{\rm V/K}$, one-order-of magnitude greater than the previously reported values. The concomitant enhancement of the LSSE and thermal conductivity of YIG suggests the strong correlation between magnon and phonon transport in the LSSE.
BIISQ: Bayesian nonparametric discovery of Isoforms and Individual Specific Quantification
Creators: name: Aguiar, Derek
name: Cheng, Li-Fang
name: Dumitrascu, Bianca
name: Mordelet, Fantine
name: Pai, Athma A
name: Engelhardt, Barbara E
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Most human protein-coding genes can be transcribed into multiple possible distinct mRNA isoforms. These alternative splicing patterns encourage molecular diversity and dysregulation of isoform expression plays an important role in disease etiology. However, isoforms are difficult to characterize from short-read RNA-seq data because they share identical subsequences and exist in tissue- and sample-specific frequencies. Here, we develop BIISQ, a Bayesian nonparametric model to discover Isoforms and Individual Specific Quantification from RNA-seq data. BIISQ does not require known isoform reference sequences but instead estimates isoform composition directly with an isoform catalog shared across samples. We develop a stochastic variational inference approach for efficient and robust posterior inference and demonstrate superior precision and recall for short read RNA-seq simulations and simulated short read data from PacBio long read sequencing when compared to state-of-the-art isoform reconstruction methods. BIISQ achieves the most significant gains for longer (in terms of exons) isoforms and isoforms that are lowly expressed (over 500% more transcripts correctly inferred at low coverage in simulations). Finally, we estimate isoforms in the GEUVADIS RNA-seq data, identify genetic variants that regulate transcript ratios, and demonstrate variant enrichment in functional elements related to mRNA splicing regulation.
Derivation of the effective Chiral Lagrangian for pseudoscalar, scalar, vector and axial-vector mesons from QCD
Creators: name: Ren, Ke
name: Fu, Hui-Feng
name: Wang, Qing
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A previous formal derivation of the effective chiral Lagrangian for low-lying pseudoscalar mesons from first-principles QCD without approximations [Wang et al., Phys. Rev. D61, (2000) 54011] is generalized to further include scalar, vector, and axial-vector mesons. In the large Nc limit and with an Abelian approximation, we show that the properties of the newly added mesons in our formalism are determined by the corresponding underlying fundamental homogeneous Bethe--Salpeter equation in the ladder approximation, which yields the equations of motion for the scalar, vector, and axial-vector meson fields at the level of an effective chiral Lagrangian. The masses appearing in the equations of motion of the meson fields are those determined by the corresponding Bethe--Salpeter equation.
description: 12 pages
HCN hyperfine ratio analysis of massive molecular clumps
Creators: name: Schap, W. J.
name: Barnes, P. J.
name: Ordonez, A.
name: Ginsburg, A.
name: Yonekura, Y.
name: Fukui, Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report a new analysis protocol for HCN hyperfine data, based on the PYSPECKIT package, and results of using this new protocol to analyse a sample area of seven massive molecular clumps from the Census of High- and Medium-mass Protostars (CHaMP) survey, in order to derive maps of column density for this species. There is a strong correlation between the HCN integrated intensity, IHCN, and previously reported IHCO+ in the clumps, but IN2H+ is not well correlated with either of these other two "dense gas tracers". The four fitted parameters from PYSPECKIT in this region fall in the range of VLSR = 8-10 km/s, σ V = 1.2-2.2 km/s, Tex = 4-15 K, and τ = 0.2-2.5. These parameters allow us to derive a column density map of these clouds, without limiting assumptions about the excitation or opacity. A more traditional (linear) method of converting IHCN to total mass column gives much lower clump masses than our results based on the hyperfine analysis. This is primarily due to areas in the sample region of low I, low Tex, and high τ . We conclude that there may be more dense gas in these massive clumps not engaged in massive star formation than previously recognized. If this result holds for other clouds in the CHaMP sample, it would have dramatic consequences for the calibration of the Kennicutt-Schmidt star formation laws, including a large increase in the gas depletion time-scale in such regions.
Constraining f(T) teleparallel gravity by Big Bang Nucleosynthesis
Creators: name: Capozziello, S.
name: Lambiase, G.
name: Saridakis, E. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use BBN observational data on primordial abundance of ${}^4He$ to constrain f(T) gravity. The three most studied viable $f(T)$ models, namely the power law, the exponential and the square-root exponential are considered, and the BBN bounds are adopted in order to extract constraints on their free parameters. For the power-law model, we find that the constraints are in agreement with those acquired using late-time cosmological data. For the exponential and the square-root exponential models, we show that for realiable regions of parameters space they always satisfy the BBN bounds. We conclude that viable f(T) models can successfully satisfy the BBN constraints.
description: 10 pages, 1 figure
Diversity of knot solitons in liquid crystals manifested by linking of preimages in torons and hopfions
Creators: name: Ackerman, P. J.
name: Smalyukh, I. I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Topological solitons are knots in continuous physical fields classified by non-zero Hopf index values. Despite arising in theories that span many branches of physics, from elementary particles to condensed matter and cosmology, they remain experimentally elusive and poorly understood. We introduce a method of experimental and numerical analysis of such localized structures in liquid crystals that, similar to the mathematical Hopf maps, relates all points of the medium's order parameter space to their closed-loop preimages within the three-dimensional solitons. We uncover a surprisingly large diversity of naturally occurring and laser-generated topologically nontrivial solitons with differently knotted nematic fields, which previously have not been realized in theories and experiments alike. We discuss the implications of the liquid crystal's non-polar nature on the knot soliton topology and how the medium's chirality, confinement and elastic anisotropy help to overcome the constrains of the Hobart-Derrick theorem, yielding static three-dimensional solitons without or with additional defects. Our findings will establish chiral nematics as a model system for experimental exploration of topological solitons and may impinge on understanding of such nonsingular field configurations in other branches of physics, as well as may lead to technological applications
Anomalous current-induced spin torques in ferrimagnets near compensation
Creators: name: Mishra, Rahul
name: Yu, Jiawei
name: Qiu, Xuepeng
name: Motapothula, M.
name: Venkatesan, T.
name: Yang, Hyunsoo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: While current-induced spin-orbit torques (SOTs) have been extensively studied in ferromagnets and antiferromagnets, ferrimagnets have been less studied. Here we report the presence of enhanced spin-orbit torques resulting from negative exchange interaction in ferrimagnets. The effective field and switching efficiency increase substantially as CoGd approaches its compensation point, giving rise to 9 times larger spin-orbit torques compared to that of non-compensated one. The macrospin modelling results also support efficient spin-orbit torques in a ferrimagnet. Our results suggest that ferrimagnets near compensation can be a new route for spin-orbit torque applications due to their high thermal stability and easy current-induced switching assisted by negative exchange interaction.
Waiting time distribution for electron transport in a molecular junction with electron-vibration interaction
Creators: name: Kosov, Daniel S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: On the elementary level, electronic current consists of individual electron tunnelling events that are separated by random time intervals. The waiting time distribution is a probability to observe the electron transfer in the detector electrode at time $t+τ$ given that an electron was detected in the same electrode at earlier time $t$. We study waiting time distribution for quantum transport in a vibrating molecular junction. By treating the electron-vibration interaction exactly and molecule-electrode coupling perturbatively, we obtain master equation and compute the distribution of waiting times for electron transport. The details of waiting time distributions are used to elucidate microscopic mechanism of electron transport and the role of electron-vibration interactions. We find that as nonequilibrium develops in molecular junction, the skewness and dispersion of the waiting time distribution experience stepwise drops with the increase of the electric current. These steps are associated with the excitations of vibrational states by tunnelling electrons. In the strong electron-vibration coupling regime, the dispersion decrease dominates over all other changes in the waiting time distribution as the molecular junction departs far away from the equilibrium.
Quantum oscillation studies of topological semimetal candidate ZrGeM (M=S, Se, Te)
Creators: name: Hu, J.
name: Zhu, Y. L.
name: Graf, D.
name: Tang, Z. J.
name: Liu, J. Y.
name: Mao, Z. Q.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The WHM - type materials (W=Zr/Hf/La, H=Si/Ge/Sn/Sb, M=O/S/Se/Te) have been predicted to be a large pool of topological materials. These materials allow for fine tuning of spin-orbit coupling, lattice constant and structural dimensionality for various combinations of W, H and M elements, thus providing an excellent platform to study how these parameters' tuning affect topological semimetal state. In this work, we report the high field quantum oscillation studies on ZrGeM (M=S, Se, and Te). We have found the first experimental evidence for their theoretically-predicted topological semimetal states. From the angular dependence of quantum oscillation frequency, we have also studied the Fermi surface topologies of these materials. Moreover, we have compared Dirac electron behavior between the ZrGeM and ZrSiM systems, which reveals deep insights to the tuning of Dirac state by spin-orbit coupling and lattice constants in the WHM systems.
A Data-Oriented Model of Literary Language
Creators: name: van Cranenburgh, Andreas
name: Bod, Rens
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We consider the task of predicting how literary a text is, with a gold standard from human ratings. Aside from a standard bigram baseline, we apply rich syntactic tree fragments, mined from the training set, and a series of hand-picked features. Our model is the first to distinguish degrees of highly and less literary novels using a variety of lexical and syntactic features, and explains 76.0 % of the variation in literary ratings.
description: To be published in EACL 2017, 11 pages
title: Correction: Treffert et al. Towards High-Repetition-Rate Fast Neutron Sources Using Novel Enabling Technologies. Instruments 2021, 5, 38
Creators: name: Treffert, Franziska
name: Curry, Chandra B.
name: Ditmire, Todd
name: Glenn, Griffin D.
name: Quevedo, Hernan J.
name: Roth, Markus
name: Schoenwaelder, Christopher
name: Zimmer, Marc
name: Glenzer, Siegfried H.
name: Gauthier, Maxence
Publisher: name: MDPI
Year: 2023

description: In the original publication [1], there was a mistake in Figure 9 as published. The energy for the RCF layer shown in Figure 9a was erroneously stated to be 6.4 MeV. The corrected value for the RCF layer in Figure 9a is 23.7 MeV, as clarified in this erratum.
title: Цифровая трансформация экономики
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: В учебном пособии раскрываются фундаментальные признаки нового технологического уклада общества и экономической деятельности Индустрий 4.0 и 5.0, теоретические основы и понятийный аппарат, причины и источники цифровой трансформации экономики и общества, ее инфокоммуникационная природа. Обосновываются социально-экономические последствия цифровой трансформации экономики и управления бизнес-процессами, экосистемный характер платформенной экономики и бизнес-моделей, причины платформенной трансформации цифровых продуктов, технологические основы эволюции сущности и потребительской ценности цифровых продуктов, синергия эффективности цифровой трансформации бизнеса и методика ее измерения. Раскрываются сущность процесса цифрового преобразования традиционной модели рыночной экономики в сбалансированную модель единого информационного пространства, международные и национальные показатели цифровой трансформации экономических и социальных процессов и методы их измерения. Показываются практические результаты трансформации моделей бизнеса в инфокоммуникационной и банковской сферах деятельности, применения методики измерения синергетической эффективности проектов. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для магистрантов укрупненной группы «Экономика и управление», изучающих дисциплину «Цифровая трансформация экономики», а также специалистов в областях управления, маркетинга и бизнес-информатики.
About von Neumann's problem for locally compact groups
Creators: name: Schneider, Friedrich Martin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: General Topology (math.GN)
subject: FOS: Mathematics

description: We note a generalization of Whyte's geometric solution to the von Neumann problem for locally compact groups in terms of Borel and clopen piecewise translations. This strengthens a result of Paterson on the existence of Borel paradoxical decompositions for non-amenable locally compact groups. Along the way, we study the connection between some geometric properties of coarse spaces and certain algebraic characteristics of their wobbling groups.
description: 14 pages, no figures
A Nonconvex Splitting Method for Symmetric Nonnegative Matrix Factorization: Convergence Analysis and Optimality
Creators: name: Lu, Songtao
name: Hong, Mingyi
name: Wang, Zhengdao
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Symmetric nonnegative matrix factorization (SymNMF) has important applications in data analytics problems such as document clustering, community detection and image segmentation. In this paper, we propose a novel nonconvex variable splitting method for solving SymNMF. The proposed algorithm is guaranteed to converge to the set of Karush-Kuhn-Tucker (KKT) points of the nonconvex SymNMF problem. Furthermore, it achieves a global sublinear convergence rate. We also show that the algorithm can be efficiently implemented in parallel. Further, sufficient conditions are provided which guarantee the global and local optimality of the obtained solutions. Extensive numerical results performed on both synthetic and real data sets suggest that the proposed algorithm converges quickly to a local minimum solution.
description: IEEE Transactions on Signal Processing (to appear)
title: Экономическая безопасность бизнеса в цифровой среде
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: В учебном пособии раскрываются научные основы национальной и экономической безопасности, цели, задачи и принципы управления экономической безопасностью государства и бизнеса в цифровой среде. Даются понятия критериев, индикаторов и показателей, основных угроз и рисков экономической безопасности бизнеса, раскрываются их источники. Рассматриваются риски цифровой среды бизнеса и влияние цифровой трансформации экономики и общества на задачи и принципы обеспечения экономической безопасности бизнеса в цифровой среде; методы анализа безопасности по экономическим и финансовым критериям, способы измерения рисков и моделирования банкротства, инструменты управления рисками, стратегические направления нейтрализации угроз и механизм обеспечения экономической и информационной безопасности организаций в условиях цифровой трансформации. Особое внимание уделяется экономической безопасности инфокоммуникационного бизнеса с учетом влияния отраслевых особенностей производства услуг на финансовые критерии безопасности и модели банкротства, систему организации экономической безопасности на основе интеграции системы управления рисками с процессами планирования цифрового развития бизнеса. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для магистрантов укрупненной группы специальностей и направлений подготовки «Экономика и управление», изучающих дисциплину «Экономическая безопасность бизнеса в цифровой среде», а также для магистрантов технических направлений в области информационной и цифровой безопасности.
Entangling light field with mechanical resonator at high temperature
Creators: name: Lin, Qing
name: He, Bing
name: Yang, Liu
name: Xiao, Min
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a study on how to realize the widely interested optomechanical entanglement at high temperature. Unlike the majority of the previous experimental and theoretical researches that consider the entanglement of a mechanical resonator with a cavity field created by red-detuned continuous-wave or blue-detuned pulsed driving field, we find that applying blue-detuned continuous-wave pump field to cavity optomechanical systems can achieve considerable degrees of quantum entanglement, which is generally challenging to obtain at high temperature for the known physical systems. The competition between the induced squeezing-type interaction and the existing decoherence leads to stable entanglement in dynamically unstable regime. There is a much more relaxed condition for the existence of entanglement, as compared with the well-known criterion for neglecting the thermal decoherence on optomechanically coupled systems. A simple relation about a boundary in the parameter space, across which the entanglement can exist or not, is found with an analytical expression for the degree of the achieved entanglement at any temperature, which is derived for the systems of highly resolved sideband. The studied scenario with blue-detuned continuous-wave driving field can greatly simplify the generation of the widely interested optomechanical entanglement of macroscopic quantum states. Our study also provides the answers to two fundamentally meaningful open problems: (1) what is the condition for a system to avoid its loss of quantum entanglement under thermal decoherence? (2) is it possible to preserve the entanglement in a thermal environment by increasing the interaction that entangles the subsystems?
description: 12 pages, 11 figures
A high performance Nb nano-SQUID with a three-dimensional structure
Creators: name: Chen, Lei
name: Wang, Hao
name: Liu, Xiaoyu
name: Wu, Long
name: Wang, Zhen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A superconducting quantum interference device (SQUID) miniaturized into nanoscale is promising in the inductive detection of a single electron spin. A nano-SQUID with a strong spin coupling coefficient, a low flux noise, and a wide working magnetic field range is highly desired in a single spin resonance measurement. Nano-SQUIDs with Dayem-bridge junctions excel in a high working field range and in the direct coupling from spins to the bridge. However, the common planar structure of nano-SQUIDs is known for problems such as a shallow flux modulation depth and a troublesome hysteresis in current-voltage curves. Here, we developed a fabrication process for creating three-dimensional (3-D) niobium (Nb) nano-SQUIDs with nano-bridge junctions that can be tuned independently. Characterization of the device shows up to 45.9 % modulation depth with a reversible current-voltage curve. Owning to the large modulation depth, the measured flux noise is as low as 0.34 μΦ$_0$/Hz$^{1/2}$. The working field range of the SQUID is greater than 0.5 T parallel to the SQUID plane. We believe that 3-D Nb nano-SQUIDs provide a promising step toward effective single-spin inductive detection.
description: 23 pages, 4 figures
Quantum dark soliton (qubits) in Bose Einstein condensates
Creators: name: Shaukat, Muzzamal I.
name: Castro, Eduardo V.
name: Terças, Hugo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the possibility of using dark soliton in quasi one dimensional Bose Einstein condensates to produce two level system (qubits) by exploiting the intrinsic nonlinear and the coherent nature of the matter waves. We calculate the soliton spectrum and the conditions for a qubit to exist. We also compute the coupling between the phonons and the soliton and investigate the emission rate of the qubits in that case. Remarkably, the qubit lifetime is estimated to be of the order of a few seconds, being by the dark soliton "death" due to quantum evaporation.
description: Bose Einstein condensates, Qubit, Dark Soliton
CO~($J = 1-0$) Observations of a Filamentary Molecular Cloud in the Galactic Region Centered at $l = 150\arcdeg, b = 3.5\arcdeg$
Creators: name: Xiong, Fang
name: Chen, Xuepeng
name: Yang, Ji
name: Fang, Min
name: Zhang, Shaobo
name: Zhang, Miaomiao
name: Du, Xinyu
name: Long, Wenshan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present large-field (4.25~$\times$~3.75 deg$^2$) mapping observations toward the Galactic region centered at $l = 150\arcdeg, b = 3.5\arcdeg$ in the $J = 1-0$ emission line of CO isotopologues ($^{12}$CO, $^{13}$CO, and C$^{18}$O), using the 13.7 m millimeter-wavelength telescope of the Purple Mountain Observatory. Based on the $^{13}$CO observations, we reveal a filamentary cloud in the Local Arm at a velocity range of $-$0.5 to 6.5~km~s$^{-1}$. This molecular cloud contains 1 main filament and 11 sub-filaments, showing the so-called "ridge-nest" structure. The main filament and three sub-filaments are also detected in the C$^{18}$O line. The velocity structures of most identified filaments display continuous distribution with slight velocity gradients. The measured median excitation temperature, line width, length, width, and linear mass of the filaments are $\sim$9.28~K, 0.85~km~s$^{-1}$, 7.30~pc, 0.79~pc, and 17.92~$M_\sun$~pc$^{-1}$, respectively, assuming a distance of 400~pc. We find that the four filaments detected in the C$^{18}$O line are thermally supercritical, and two of them are in the virialized state, and thus tend to be gravitationally bound. We identify in total 146 $^{13}$CO clumps in the cloud, about 77$\%$ of the clumps are distributed along the filaments. About 56$\%$ of the virialized clumps are found to be associated with the supercritical filaments. Three young stellar object (YSO) candidates are also identified in the supercritical filaments, based on the complementary infrared (IR) data. These results indicate that the supercritical filaments, especially the virialized filaments, may contain star-forming activities.
description: 48 pages, 24 figures, 3 tables. Published by Astrophysical Journal
Impact of the interface quality of Pt/YIG(111) hybrids on their spin Hall magnetoresistance
Creators: name: Pütter, Sabine
name: Geprägs, Stephan
name: Schlitz, Richard
name: Althammer, Matthias
name: Erb, Andreas
name: Gross, Rudolf
name: Goennenwein, Sebastian T. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the influence of the interface quality of Pt/Y$_3$Fe$_5$O$_{12}$(111) hybrids on their spin Hall magnetoresistance. This is achieved by exposing Y$_3$Fe$_5$O$_{12}$(111) single crystal substrates to different well-defined surface treatments prior to the Pt deposition. The quality of the Y$_3$Fe$_5$O$_{12}$(YIG) surface, the Pt/YIG interface and the Pt layer is monitored \textit{in-situ} by reflection high-energy electron diffraction and Auger electron spectroscopy as well as \textit{ex-situ} by atomic force microscopy and x-ray diffraction. To identify the impact of the different surface treatments on the spin Hall magnetoresistance, angle-dependent magnetoresistance measurements are carried out at room temperature. The largest spin Hall magnetoresistance is found in Pt/YIG fabricated by a two-step surface treatment consisting of a "piranha" etch process followed by an annealing step at $500^\circ$C in pure oxygen atmosphere. Our data suggest that the small SMR in Pt/YIG without any surface treatments of the YIG substrate prior to Pt deposition is caused by a considerable carbon agglomeration at the Y$_3$Fe$_5$O$_{12}$ surface.
Multi-Year X-ray Variations of Iron-K and Continuum Emissions in the Young Supernova Remnant Cassiopeia A
Creators: name: Sato, Toshiki
name: Maeda, Yoshitomo
name: Bamba, Aya
name: Katsuda, Satoru
name: Ohira, Yutaka
name: Yamazaki, Ryo
name: Masai, Kuniaki
name: Matsumoto, Hironori
name: Sawada, Makoto
name: Terada, Yukikatsu
name: Hughes, John P.
name: Ishida, Manabu
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We found simultaneous decrease of Fe-K line and 4.2-6 keV continuum of Cassiopeia A with the monitoring data taken by Chandra in 2000-2013. The flux change rates in the whole remnant are $-$0.65$\pm$0.02 \% yr$^{-1}$ in the 4.2--6.0 keV continuum and $-$0.6$\pm$0.1 \% yr$^{-1}$ in the Fe-K. In the eastern region where the thermal emission is considered to dominate, the variations show the largest values: $-$1.03$\pm$0.05 \% yr$^{-1}$ (4.2-6 keV band) and $-$0.6$\pm$0.1 \% yr$^{-1}$ (Fe-K line). In this region, the time evolution of the emission measure and the temperature have a decreasing trend. This could be interpreted as the adiabatic cooling with the expansion of $m = 0.66$. On the other hand, in the non-thermal emission dominated regions, the variations of the 4.2--6 keV continuum show the smaller rates: $-$0.60$\pm$0.04 \% yr$^{-1}$ in the southwestern region, $-$0.46$\pm$0.05 \% yr$^{-1}$ in the inner region and $+$0.00$\pm$0.07 \% yr$^{-1}$ in the forward shock region. In particular, the flux does not show significant change in the forward shock region. These results imply that a strong braking in the shock velocity has not been occurring in Cassiopeia A ($
description: 13 pages, 6 figures. Accepted for publication in ApJ
title: Статистика цифрового развития и инфокоммуникаций
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: Учебник содержит полный курс теории и практики статистики цифрового развития и инфокоммуникаций, включающий новые разделы статистики цифрового развития и переработанные и дополненные разделы статистики инфокоммуникаций с учетом цифровой трансформации экономики и общества. Рассматриваются методы, принципы, задачи и организация статистики цифрового развития Российской Федерации и деятельности в сфере информации и связи: статистического наблюдения и электронной обработки данных, анализа системы показателей, их динамики и структуры, формирования интегральных методов измерения происходящих процессов, моделирования взаимосвязей социально-экономических явлений. Раскрывается методология комплексного измерения процессов цифрового развития экономики и общества с учетом инфраструктурной роли инфокоммуникаций. Излагаются статистические методы изучения рынка, спроса и предложения услуг, сетевой инфраструктуры, производственных ресурсов, результатов деятельности организаций сферы информации и связи в цифровом пространстве экономики и общества. Подготовлен с учетом требований Федерального государственного образовательного стандарта высшего образования по направлению подготовки 38.03.01 «Экономика» и Профессиональных стандартов по областям 08 «Финансы и экономика», 08.036 «Специалист по работе с инвестиционными проектами» и 08.037 «Бизнес-аналитик». Учебник рекомендован для студентов бакалавриата и магистратуры, преподавателей, специалистов экономики, бизнес-информатики, информационных технологий, рекламы в сфере информации и связи.
Conservation laws, vertex corrections, and screening in Raman spectroscopy
Creators: name: Maiti, Saurabh
name: Chubukov, Andrey
name: Hirschfeld, P. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a microscopic theory for the Raman response of a clean multiband superconductor accounting for the effects of vertex corrections and long-range Coulomb interaction. The measured Raman intensity, $R(Ω)$, is proportional to the imaginary part of the fully renormalized particle-hole correlator with Raman form-factors $γ(\vec k)$. In a BCS superconductor, a bare Raman bubble is non-zero for any $γ(\vec k)$ and diverges at $Ω= 2Δ+0$, where $Δ$ is the largest gap along the Fermi surface. However, for $γ(\vec k) =$ const, the full $R(Ω)$ is expected to vanish due to particle number conservation. It was long thought that this vanishing is due to the singular screening by long-range Coulomb interaction. We argue that this vanishing actually holds due to vertex corrections from the same short-range interaction that gives rise to superconductivity. We further argue that long-range Coulomb interaction does not affect the Raman signal for $any$ $γ(\vec k)$. We argue that vertex corrections eliminate the divergence at $2Δ$ and replace it with a maximum at a somewhat larger frequency. We also argue that vertex corrections give rise to sharp peaks in $R(Ω)$ at $Ω< 2Δ$, when $Ω$ coincides with the frequency of one of collective modes in a superconductor, e.g, Leggett mode, Bardasis-Schrieffer mode, or an excitonic mode.
description: 19pp; 8figs; References to more old work added
Auxiliary Supplementary Materials (SM)
Creators: name: Bento, Nuno
Publisher: name: Zenodo
Year: 2024

description: Auxiliary Supplementary Materials (SM) for:

Bento N., Grubler A., Boza-Kiss B., De Stercke S., Krey V., McCollum D., Zimm C., Alves T. (2024). Greater leverage for energy security with demand-side policies. Science, DOI: 10.1126/science.adj6150.

 

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LHC as an Axion Factory: Probing an Axion Explanation for $(g-2)_μ$ with Exotic Higgs Decays
Creators: name: Bauer, Martin
name: Neubert, Matthias
name: Thamm, Andrea
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that a large region of so far unconstrained parameter space for axion-like particles (ALPs), where their couplings to the Standard Model are of order $(0.01\!-\!1)\,\mbox{TeV}^{-1}$, can be explored by searches for the exotic Higgs decays $h\to Za$ and $h\to aa$ in Run-2 of the LHC. Almost the complete region in which ALPs can explain the anomalous magnetic moment of the muon can be probed by searches for these decays with subsequent decay $a\toγγ$, even if the relevant couplings are loop suppressed and the $a\toγγ$ branching ratio is less than~1.
description: 5 pages, 4 figures
ResearchBox 3481, 'Mood Effects on Value-Based Decisions in Smokers', https://researchbox.org/3481
Creators: name: Amber Copeland
name: Matt Field
Publisher: name: Zenodo
Year: 2025

description: Box title: 'Mood Effects on Value-Based Decisions in Smokers'   Reference: Note: this backup was created automatically by a ResearchBox bot