cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Herschel-Planck dust optical-depth and column-density maps: I. Method description and results for Orion
Creators: name: Lombardi, Marco
name: Bouy, Herve
name: Alves, Joao
name: Lada, Charles J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high-resolution, high dynamic range column-density and color-temperature maps of the Orion complex using a combination of Planck dust-emission maps, Herschel dust-emission maps, and 2MASS NIR dust-extinction maps. The column-density maps combine the robustness of the 2MASS NIR extinction maps with the resolution and coverage of the Herschel and Planck dust-emission maps and constitute the highest dynamic range column-density maps ever constructed for the entire Orion complex, covering $0.01 \, \mathrm{mag} < A_K < 30 \,\mathrm{mag}$, or $2 \times 10^{20} \, \mathrm{cm}^{-2} < N < 5 \times 10^{23} \,\mathrm{cm}^{-2}$. We determined the ratio of the 2.2 microns extinction coefficient to the 850 microns opacity and found that the values obtained for both Orion A and B are significantly lower than the predictions of standard dust models, but agree with newer models that incorporate icy silicate-graphite conglomerates for the grain population. We show that the cloud projected pdf, over a large range of column densities, can be well fitted by a simple power law. Moreover, we considered the local Schmidt-law for star formation, and confirm earlier results, showing that the protostar surface density $Σ_*$ follows a simple law $Σ_* \propto Σ_{gas}^β$, with $β\sim 2$.
description: 19 pages, A&A in press. High resolution figures available at http://www.marcolombardi.org/research/recent-papers/orion
An Isotropy Measurement with Gravitational Wave Observations
Creators: name: Essick, Reed
name: Farr, Will M.
name: Fishbach, Maya
name: Holz, Daniel E.
name: Katsavounidis, Erik
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We constrain the distribution of merging compact binaries across the celestial sphere using the GWTC-3 catalog from the LIGO-Virgo-KAGRA Collaborations' (LVK) third observing run. With 63 confident detections from O3, we constrain the relative variability (standard deviation) of the rate density across the sky to be $\lesssim 16\%$ at 90\% confidence assuming the logarithm of the rate density is described by a Gaussian random field with correlation length $\geq 10^\circ$. This tightens to $\lesssim 3.5\%$ when the correlation length is $\geq 20^\circ$. While the new O3 data provides the tightest constraints on anisotropies available to-date, we do not find overwhelming evidence in favor of isotropy, either. A simple counting experiment favors an isotropic distribution by a factor of $\mathcal{B}^\mathrm{iso}_\mathrm{ani} = 3.7$, which is nonetheless an improvement of more than a factor of two compared to analogous analyses based on only the first and second observing runs of the LVK.
description: main text: 12 pages, 6 figures, 2 tables
Learning Feynman Diagrams with Tensor Trains
Creators: name: Nunez-Fernandez, Yuriel
name: Jeannin, Matthieu
name: Dumitrescu, Philipp T.
name: Kloss, Thomas
name: Kaye, Jason
name: Parcollet, Olivier
name: Waintal, Xavier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use tensor network techniques to obtain high order perturbative diagrammatic expansions for the quantum many-body problem at very high precision. The approach is based on a tensor train parsimonious representation of the sum of all Feynman diagrams, obtained in a controlled and accurate way with the tensor cross interpolation algorithm. It yields the full time evolution of physical quantities in the presence of any arbitrary time dependent interaction. Our benchmarks on the Anderson quantum impurity problem, within the real time non-equilibrium Schwinger-Keldysh formalism, demonstrate that this technique supersedes diagrammatic Quantum Monte Carlo by orders of magnitude in precision and speed, with convergence rates $1/N^2$ or faster, where N is the number of function evaluations. The method also works in parameter regimes characterized by strongly oscillatory integrals in high dimension, which suffer from a catastrophic sign problem in Quantum Monte-Carlo. Finally, we also present two exploratory studies showing that the technique generalizes to more complex situations: a double quantum dot and a single impurity embedded in a two dimensional lattice.
description: 29 pages, 18 figures. To appear in Phys. Rev. X
Fig. S2: Monitoring volcano deformation at La Soufrière, St Vincent during the 2020–21 eruption with insights into its magma plumbing system architecture
Creators: name: Camejo-Harry, Michal
name: Pascal, Karen
name: Euillades, Pablo
name: Grandin, Raphaël
name: Hamling, Ian
name: Euillades, Leonardo
name: Contreras-Arratia, Rodrigo
name: Ryan, Graham A.
name: Latchman, Joan L.
name: Lynch, Lloyd
name: Jo, Minjeong
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Unwrapped interferogram using SAOCOM images obtained between 02/10/2020 and 06/01/2021 (ascending track, path 29 and frame 472). This exemplifies the lack of deformation detected outside of the explosive phase.
You Only Need a Scalar Only
Creators: name: Krasikova, Sveta
name: Zhechev, Ventsislav
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: We propose a compositional analysis for sentences of the kind “You only have to go to the North End to get good cheese”, referred to as the Sufficiency Modal Construction in the recent lit- erature. We argue that the SMC is ambiguous depending on the kind of ordering induced by only. So is the exceptive construction – its cross-linguistic counterpart. Only is treated as inducing either a ‘comparative possibility’ scale or an ‘implication-based’ partial order on propositions. The prop- erties of the ‘comparative possibility’ scale explain the absence of the prejacent presupposition that is usually associated with only. By integrating the scalarity into the semantics of the SMC, we explain the polarity facts observed in both variants of the construction. The sufficiency meaning component is argued to be due to a pragmatic inference.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
High-order soliton solutions and their dynamics in the inhomogeneous variable coefficients Hirota equation
Creators: name: Zhou, Huijuan
name: Chen, Yong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A series of new soliton solutions are presented for the inhomogeneous variable coefficient Hirota equation by using the Riemann Hilbert method and transformation relationship. First, through a standard dressing procedure, the N-soliton matrix associated with the simple zeros in the Riemann Hilbert problem for the Hirota equation is constructed. Then the N-soliton matrix of the inhomogeneous variable coefficient Hirota equation can be obtained by a special transformation relationship from the N-soliton matrix of the Hirota equation. Next, using the generalized Darboux transformation, the high-order soliton solutions corresponding to the elementary high-order zeros in the Riemann Hilbert problem for the Hirota equation can be derived. Similarly, employing the transformation relationship mentioned above can lead to the high-order soliton solutions of the inhomogeneous variable coefficient Hirota equation. In addition, the collision dynamics of Hirota and inhomogeneous variable coefficient Hirota equations are analyzed; the asymptotic behaviors for multi-solitons and long-term asymptotic estimates for the high-order one-soliton of the Hirota equation are concretely calculated. Most notably, by analyzing the dynamics of the multi-solitons and high-order solitons of the inhomogeneous variable coefficient Hirota equation, we discover numerous new waveforms such as heart-shaped periodic wave solutions, O-shaped periodic wave solutions etc. that have never been reported before, which are crucial in theory and practice.
description: arXiv admin note: text overlap with arXiv:2010.09417
GAN with an Auxiliary Regressor for the Fast Simulation of the Electromagnetic Calorimeter Response
Creators: name: Rogachev, Alexander
name: Ratnikov, Fedor
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: High energy physics experiments essentially rely on simulated data for physics analyses. However, running detailed simulation models requires a tremendous amount of computation resources. New approaches to speed up detector simulation are therefore needed. The generation of calorimeter responses is often the most expensive component of the simulation chain for HEP experiments. It was shown that deep learning techniques, especially Generative Adversarial Networks, may be used to reproduce the calorimeter response. However, those applications are challenging, as the generated responses need evaluation not only in terms of image consistency: different physics-based quality metrics should be also taken into consideration. In our work, we develop a multitask GAN-based framework with the goal to speed up the response generation of the Electromagnetic Calorimeter (ECAL) of the LHCb detector at LHC. We introduce the Auxiliary Regressor as a second task to evaluate a proxy metric of the given input that is used by the Discriminator of the GAN. We show that this approach improves the stability of GAN and the model produces samples with better physics distributions.
description: Contribution to ACAT 2021 Conference
Sequence-dependent folding landscapes of adenine riboswitch aptamers
Creators: name: Lin, Jong-Chin
name: Hyeon, Changbong
name: Thirumalai, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Prediction of the functions of riboswitches requires a quantitative description of the folding landscape so that the barriers and time scales for the conformational change in the switching region in the aptamer can be estimated. Using a combination of all atom molecular dynamics and coarse-grained model simulations we studied the response of adenine (A) binding add and pbuE A-riboswitches to mechanical force. The two riboswitches contain a structurally similar three-way junction formed by three paired helices, P1, P2, and P3, but carry out different functions. Using pulling simulations, with structures generated in MD simulations, we show that after P1 rips the dominant unfolding pathway in add A-riboswitch is the rupture of P2 followed by unraveling of P3. In the pbuE A-riboswitch, after P1 unfolds P3 ruptures ahead of P2. The order of unfolding of the helices, which is in accord with single molecule pulling experiments, is determined by the relative stabilities of the individual helices. Our results show that the stability of isolated helices determines the order of assembly and response to force in these non-coding regions. We use the simulated free energy profile for pbuE A-riboswitch to estimate the time scale for allosteric switching, which shows that this riboswitch is under kinetic control lending additional support to the conclusion based on single molecule pulling experiments. A consequence of the stability hypothesis is that a single point mutation (U28C) in the P2 helix of the add A-riboswitch, which increases the stability of P2, would make the folding landscapes of the two riboswitches similar. This prediction can be tested in single molecule pulling experiments.
description: 22 pages, 4 figures
A Unified Semantics Analysis of Floated and Binominal Each
Creators: name: Kobuchi-Philip, Mana
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: This paper discusses a semantic analysis of three syntactic types of English each, namely, floated each, binominal each, and prenominal each. It is argued that floated each consists of two parts, a quantifier and an inaudible element which functions as its restrictor, which together form a tripartite quantificational structure when they compose with the predicate. Binominal each and an associated NP such as two topics (which is generally called the ‘distributive share’) are syntactically analyzed as forming a subject-predicate relation within a DP in which the NP undergoes so-called ‘predicate inversion’. Semantically, binominal each is analyzed as having the same semantic value as floated each, while prenominal each is shown to have a different logical type from floated and binominal each. As can be seen from analogous constructions in some Romance languages, it does not lexically contain its restrictor.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
A Unified Analysis of Passives and Anticausatives
Creators: name: Kallulli, Dalina
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: Starting from the basic observation that, across languages, the anticausative variant of an alternating verb systematically involves morphological marking that is shared by passive verbs, the goal of this paper is to provide a uniform and formal account of these arguably two different construction types. The central claim that I put forward is that passives and anticausatives differ only with respect to the event-type features of the verb but both arise through the same operation, namely suppression by special morphology of a feature in v that encodes the ontological event type of the verb. Crucially, I argue for two syntactic primitives, namely act and cause, whereto I trace the passive/anticausative distinction. Passive constructions across languages are made compatible by relegating the differences to simple combinatorial properties of verb and prepositional types and their interactions with other event functors, which are in turn encoded differently morphologically across languages. New arguments are brought forward for a causative analysis of anticausatives. Agentive adverbials are examined, and doubt is cast on the usefulness of by-phrases as a diagnostic for argumenthood.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Nanoantennas for enhanced light trapping in transparent organic solar cells
Creators: name: Voroshilov, Pavel M.
name: Simovski, Constantin R.
name: Belov, Pavel A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a light-trapping structure offering a significant enhancement of photovoltaic absorption in transparent organic solar cells operating at infrared while the visible light transmission keeps sufficiently high. The main mechanism of light trapping is related with the excitation of collective oscillations of the metal nanoantenna arrays, characterized by advantageous field distribution in the volume of the solar cell. It allows more than triple increase of infrared photovoltaic absorption.
description: submitted to Journal of Modern Optics
What Influences the Referential Properties of Reflexives and Pronouns in Finnish?
Creators: name: Kaiser, Elsi
name: Runner, Jeffrey T.
name: Sussman, Rachel S.
name: Tanenhaus, Michael K.
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: According to standard Binding Theory, pronouns and reflexives are in (nearly) complementary distribution. However, representational NPs (e.g. ‘picture of her/herself’) allow both. It has been suggested that in English, reflexives in representational NPs (RNPs) have a preference for ‘sources of information’ and that pronouns prefer ‘perceivers of information.’ We conducted two experiments investigating the effects of structural and non-structural (source/perceiver) factors on the interpretation of two kinds of RNP structures in a typologically different language, namely Finnish. Our results reveal source/perceiver effects for postnominal but not for prenominal RNPs in Finnish, with a difference in the degree of sensitivity that pronouns and reflexives exhibit to the source/perceiver manipulation, and our results also suggest that morphological differences in Finnish reflexives correspond to interpretation differences. As a whole, these results support a multiple-factor model of reference resolution, which assumes that multiple factors can play a role in reference resolution and that the relative contributions of these factors can be different for different anaphoric forms (Kaiser 2003b, Kaiser & Trueswell in press).
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Fig. S6: Monitoring volcano deformation at La Soufrière, St Vincent during the 2020–21 eruption with insights into its magma plumbing system architecture
Creators: name: Camejo-Harry, Michal
name: Pascal, Karen
name: Euillades, Pablo
name: Grandin, Raphaël
name: Hamling, Ian
name: Euillades, Leonardo
name: Contreras-Arratia, Rodrigo
name: Ryan, Graham A.
name: Latchman, Joan L.
name: Lynch, Lloyd
name: Jo, Minjeong
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Unwrapped interferogram using ALOS-2 images obtained between 07/04/2021 and 21/04/2021 (ascending track, path 36 and frame 250). This exemplifies the inability of ALOS-2 radar to detect deformation related to the explosive phase (9–22 April 2021) due to the low signal-to-noise ratio and widespread lack of coherence.
Effects of Topic and Focus on Salience
Creators: name: Kaiser, Elsi
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: This paper investigates what factors make a particular referent a good antecedent for subsequent pronominal reference. In particular, it explores two seemingly conflicting claims in the literature regarding the effects of topicality and focusing on referent salience. In light of new experimental results combined with a review of existing work, I conclude that neither topicality nor focusing alone can explain referent salience as indicated by patterns of pronoun reference. Rather, the data provide support for a multiple-factor model of salience (e.g. Arnold 1999). More specifically, the results show that grammatical role has a striking effect: being a subject makes a referent more salient than either pronominalization/givenness or focusing alone. Furthermore, the results of the experiment suggest that the likelihood of subsequent pronominal reference is also influenced by structural focusing and pronominalization, but not as strongly as by subjecthood. I argue that these data are best captured by a multiple-factor model in which factors differ in how influential they are relative to one another, i.e. how heavily weighted they are. A single-factor system does not seem adequate for these data.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Mechanical cooling and squeezing using optimal control
Creators: name: Isaksen, Frederik Werner
name: Andersen, Ulrik Lund
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A mechanical system can be optimally controlled through continuous measurements of its position followed by feedback. We revisit the complete formalism for predicting the performance of such as system without invoking the standard rotating wave approximations and the adiabatic approximation. Using this formalism we deduce both the conditional and unconditional state of a mechanical oscillator using the optimal control and feedback that leads to mechanical cooling and mechanical squeezing. We find large discrepancies between the exact solutions and the approximate solutions stressing the importance of using the complete model. We also highlight the importance of distinguishing between the conditional and unconditional state by demonstrating that these two cannot coincide in a typical control scheme, even with infinite feedback strength.
description: 17 pages, 9 figures. Latest update: Figures now also works in grayscale. Supplemental material incorporated in main text as an appendix
Manner and Causation in Movement Verbs
Creators: name: Geuder, Wilhelm
name: Weisgerber, Matthias
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: This paper investigates the semantic underpinnings of the distinction between two syntactic types of “manner of movement” verbs in Levin (1993), namely the RUN and ROLL classes. According to Levin's (1993) and Levin & Rappaport's (1995) work on unaccusativity, a semantic factor of “internal causation” should be the trigger for the classification of a movement verb as intransitive (=not-unaccusative), and hence for its belonging to the RUN class. We point out empirical problems for this characterisation, mainly coming from the different readings of the German verb fliegen (fly). From a comparison with other semantically similar verbs, we conclude that the semantic description which underlies the class distinction should be refined: instead of “internal causation”, the crucial semantic factor is described here as “inherent specification for a momentum of movement”. This result indicates that forces, and relations between forces, have to be part of the semantic description of the manner component in movement verbs.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Faraday rotation echo spectroscopy and detection of quantum fluctuations
Creators: name: Chen, Shao-Wen
name: Liu, Ren-Bao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Central spin decoherence is useful for detecting many-body physics in environments and moreover, the spin echo control can remove the effects of static thermal fluctuations so that the quantum fluctuations are revealed. The central spin decoherence approach, however, is feasible only in some special configurations and often requires uniform coupling between the central spin and individual spins in the baths, which are very challenging in experiments. Here, by making analogue between central spin decoherence and depolarization of photons, we propose a scheme of Faraday rotation echo spectroscopy (FRES) for studying quantum fluctuations in interacting spin systems. The echo control of the photon polarization is realized by flipping the polarization with a birefringence crystal. The FRES, similar to spin echo in magnetic resonance spectroscopy, can suppress the effects of the static magnetic fluctuations and therefore reveal dynamical magnetic fluctuations. We apply the scheme to a rare-earth compound LiHoF4 and calculate the echo signal, which is related to the quantum fluctuations of the system. We observe enhanced signals at the phase boundary. The FRES should be useful for studying quantum fluctuations in a broad range of spin systems, including cold atoms, quantum dots, solid-state impurities, and transparent magnetic materials.
Identifying Large Charge Operators
Creators: name: Badel, Gil
name: Monin, Alexander
name: Rattazzi, Riccardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Large Charge sector of Conformal Field Theory (CFT) can generically be described through a semiclassical expansion around a superfluid background. In this work, focussing on $U(1)$ invariant Wilson-Fisher fixed points, we study the spectrum of spinning large charge operators. For sufficiently low spin these correspond to the phonon excitations of the superfluid state. We discuss the organization of these states into conformal multiplets and the form of the corresponding composite operators in the free field theory limit. The latter entails a mapping, built order-by-order in the inverse charge $n^{-1}$, between the Fock space of vacuum fluctuations and the Fock space of fluctuations around the superfluid state. We discuss the limitations of the semiclassical method, and find that the phonon description breaks down for spins of order $n^{1/2}$ while the computation of observables is valid up to spins of order $n$. Finally, we apply the semiclassical method to compute some conformal 3-point and 4-point functions, and analyze the conformal block decomposition of the latter with our knowledge of the operator spectrum.
description: 45 pages + appendices, 5 figures
Fig. S4: Monitoring volcano deformation at La Soufrière, St Vincent during the 2020–21 eruption with insights into its magma plumbing system architecture
Creators: name: Camejo-Harry, Michal
name: Pascal, Karen
name: Euillades, Pablo
name: Grandin, Raphaël
name: Hamling, Ian
name: Euillades, Leonardo
name: Contreras-Arratia, Rodrigo
name: Ryan, Graham A.
name: Latchman, Joan L.
name: Lynch, Lloyd
name: Jo, Minjeong
Publisher: name: Geological Society of London
Year: 2023
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Distribution of best-fitting model solutions for I2 pre-eruption (effusive) deformation using (a) point-, (b) dyke- and (c) penny-shaped crack sources. Modelled dyke using Sentinel-1 data for I3 phase from Joseph et al. (2022) shown as black open rectangle.
Proof of single-replica equivalence in short-range spin glasses
Creators: name: Newman, C. M.
name: Read, N.
name: Stein, D. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider short-range Ising spin glasses in equilibrium at infinite system size, and prove that, for fixed bond realization and a given Gibbs state drawn from a suitable metastate, each translation- and locally-invariant function (for example, self-overlaps) of a single pure state in the decomposition of the Gibbs state takes the same value for all the pure states in that Gibbs state. We describe several significant applications to spin glasses.
description: 5 pages, 0 figures; minor edits of and additions to v.1
Manner Modification of States
Creators: name: Geuder, Wilhelm
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: In a recent contribution to a long-standing discussion in semantics as to whether the neo-Davidsonian analysis should be extended to stative predicates or not, Maienborn (2004, 2005) proposes to distinguish two types of statives; one of them is said to have a referential argument of the Davidsonian type, the other not. As one of her arguments for making such a distinction, Maienborn observes that manner modification seems to be supported only by certain statives but to be excluded by others (thus linking the issue to the use of manner modification as one major argument in favour of event semantics, cf. Parsons 1990). In this paper, it is argued that the absence of manner modification with Maienborn's second group of statives is actually due to a failure of conceptual construal: modification of a predicate is ruled out whenever its internal conceptual structure is too poor to provide a construal for the modifier; hence, the effects observed by Maienborn reduce to the fact that eventive predicates have a more complex conceptual substructure than stative ones. Hence, the issue of manner modification with statives is shown to be orthogonal to questions of logical form and event semantics. The explanatory power of the conceptual approach is demonstrated with a case study on predicates of light emission, adapting the representation format of Barsalou's (1992) frame model.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Motion Planning and Control for Multi Vehicle Autonomous Racing at High Speeds
Creators: name: Raji, Ayoub
name: Liniger, Alexander
name: Giove, Andrea
name: Toschi, Alessandro
name: Musiu, Nicola
name: Morra, Daniele
name: Verucchi, Micaela
name: Caporale, Danilo
name: Bertogna, Marko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a multi-layer motion planning and control architecture for autonomous racing, capable of avoiding static obstacles, performing active overtakes, and reaching velocities above 75 $m/s$. The used offline global trajectory generation and the online model predictive controller are highly based on optimization and dynamic models of the vehicle, where the tires and camber effects are represented in an extended version of the basic Pacejka Magic Formula. The proposed single-track model is identified and validated using multi-body motorsport libraries which allow simulating the vehicle dynamics properly, especially useful when real experimental data are missing. The fundamental regularization terms and constraints of the controller are tuned to reduce the rate of change of the inputs while assuring an acceptable velocity and path tracking. The motion planning strategy consists of a Frenét-Frame-based planner which considers a forecast of the opponent produced by a Kalman filter. The planner chooses the collision-free path and velocity profile to be tracked on a 3 seconds horizon to realize different goals such as following and overtaking. The proposed solution has been applied on a Dallara AV-21 racecar and tested at oval race tracks achieving lateral accelerations up to 25 $m/s^{2}$.
description: Accepted to the 25th IEEE International Conference on Intelligent Transportation Systems (IEEE ITSC 2022)
Inducing Non-Classical Lasing Via Periodic Drivings in Circuit Quantum Electrodynamics
Creators: name: Navarrete-Benlloch, Carlos
name: García-Ripoll, Juan José
name: Porras, Diego
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show how a pair of superconducting qubits coupled to a microwave cavity mode can be used to engineer a single-atom laser that emits light into a non-classical state. Our scheme relies on the dressing of the qubit-field coupling by periodic modulations of the qubit energy. In the dressed basis, the radiative decay of the first qubit becomes an effective incoherent pumping mechanism that injects energy into the system, hence turning dissipation to our advantage. A second, auxiliary qubit is used to shape the decay within the cavity, in such a way that lasing occurs in a squeezed basis of the cavity mode. We characterize the system both by mean-field theory and exact calculations. Our work may find applications in the generation of squeezing and entanglement in circuit QED, as well as in the study of dissipative many-body phase transitions.
description: Comments and suggestions are welcome
Anderson's theorem for correlated insulating states in twisted bilayer graphene
Creators: name: Kolář, Kryštof
name: Shavit, Gal
name: Mora, Christophe
name: Oreg, Yuval
name: von Oppen, Felix
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The emergence of correlated insulating phases in magic-angle twisted bilayer graphene exhibits strong sample dependence. Here, we derive an Anderson theorem governing the robustness against disorder of the Kramers intervalley coherent (K-IVC) state, a prime candidate for describing the correlated insulators at even fillings of the moiré flat bands. We find that the K-IVC gap is robust against local perturbations, which are odd under $\mathcal{PT}$, where $\mathcal{P}$ and $\mathcal{T}$ denote particle-hole conjugation and time reversal, respectively. In contrast, $\mathcal{PT}$-even perturbations will in general induce subgap states and reduce or even eliminate the gap. We use this result to classify the stability of the K-IVC state against various experimentally relevant perturbations. The existence of an Anderson theorem singles out the K-IVC state from other possible insulating ground states.
description: 5 pages
Optical phase locking of two infrared CW lasers separated by 100 THz
Creators: name: Chiodo, Nicola
name: Du-Burck, Frédéric
name: Hrabina, Jan
name: Lours, Michel
name: Chea, Erick
name: Acef, Ouali
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on phase-locking of two continuous wave infrared laser sources separated by 100 THz emitting around 1029 nm and 1544 nm respectively. Our approach uses three independent harmonic generation processes of the IR laser frequencies in periodically poled MgO: LiNbO3 crystals to generate second and third harmonic of that two IR sources. The beat note between the two independent green radiations generated around 515 nm is used to phase-lock one IR laser to the other, with tunable radio frequency offset. In this way, the whole setup operates as a mini frequency comb (MFC) emitting four intense optical radiations (1544 nm, 1029 nm, 772 nm and 515 nm), with output powers at least 3 orders of magnitude higher than the available power from each mode emitted by femtosecond lasers.
On an aggregation in birth-and-death stochastic dynamics
Creators: name: Finkelshtein, Dmitri
name: Kondratiev, Yuri
name: Kutoviy, Oleksandr
name: Zhizhina, Elena
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 70F45, 34A34, 37A60

description: We consider birth and death stochastic dynamics of particle systems with attractive interaction. The heuristic generator of the dynamics has a constant birth rate and density dependent decreasing death rate. The corresponding statistical dynamics is constructed. Using the Vlasov type scaling we derive the limiting mesoscopic evolution and prove that this evolution propagates chaos. We study a non-linear non-local kinetic equation for the first correlation function (density of population). The existence of uniformly bounded solutions as well as solutions growing inside of a bounded domain and expanding in the space are shown. These solutions describe two regimes in the mesoscopic system: regulation and aggregation.
description: 37 pages
Copular Sentences in Russian vs. Spanish at the Syntax-Semantics Interface
Creators: name: Geist, Ljudmila
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: Russian and Spanish each have two variants of the predicational copular sentence. In Russian, the variation concerns the case of the predicate phrase, which can be nominative or instrumental, while in Spanish, the variation involves the choice of the copular verb, either ser or estar. It is shown that the choice of the particular variant of copular sentence in both languages depends on the speaker’s perspective, i.e., on whether or not the predication is linked to a specific topic situation.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Would quantum coherence be increased by curvature effect in de Sitter space?
Creators: name: Wu, Shu-Min
name: Wang, Chun-Xu
name: Liu, Dan-Dan
name: Huang, Xiao-Li
name: Zeng, Hao-Sheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum coherence in de Sitter space for the bipartite system of Alice and Bob who initially share an entangled state between the two modes of a free massive scalar field. It is shown that the space-curvature effect can produce both local coherence and correlated coherence, leading to the increase of the total coherence of the bipartite system. These results are sharp different from the Unruh effect or Hawking effect, which, in the single mode approximation, cannot produce local coherence and at the same time destroy correlated coherence, leading to the decrease of the total coherence of the bipartite systems. Interestingly, we find that quantum coherence has the opposite behavior compared with the quantum correlation in de Sitter space. We also find that quantum coherence is most severely affected by the curvature effect of de Sitter space for the cases of conformal invariance and masslessness. Our result reveals the difference between the curvature effect in the de Sitter space and the Unruh effect in Rindler spacetime or the Hawking effect in black hole spacetime on quantum coherence.
description: 24 pages, 5 figures
What Do Gender Equality Law and Policies Mean to Me? Japanese Women Making Sense of Lived Experience As They Watch Television Dramas About Women
Creators: name: Inoue, Eri Santos
Publisher: name: Zenodo
Year: 2018
Subjects: Gender differences
Gender Gap Report
Gender Equality

description: The lack of women in core positions and political ranks, and the unequal treatment of men and women due to gender imparity continuously push Japan's rank down on the Global Gender Gap Report list. Despite the enacted laws and action plans by the government, the country still faces difficulties in achieving its goals to enable women economically, socially, and politically and to establish a gender-equal society for both genders. To support this development, the media has produced television dramas that focus on female characters and new plots. Past studies have focused almost exclusively on the representation of women and/or gender in television dramas. Thus, borrowing the phenomenological lens, this paper sought to advance our understanding of the meaning of the gender equality laws to Japanese women as they watch television dramas about women. Five working Japanese women agreed to participate in this study. The data collected through narrative in-depth interviews was analyzed using the Modified Van Kaam Method. Two central themes that describe the essence of the meaning-making system of the participants became clear: Women are Outside the Circle of Gender Equality and What Women Want: Commitment and Change. Upon further review, two subthemes emerged under theme 1: Not Me: "I have never and will never experience that"; and To Be in a Leadership Position, a Woman Must Be a Man: "Now, I have so much work like my husband". Theme 2 has one sub-theme: No gender equality at home, no gender equality at work: "My father decided that set-up, but my husband sees me as his equal and treats his staff equally".
AVAILABILITY AND UTILIZATION OF INSTRUCTIONAL MATERIALS ON STUDENT'ACADEMIC PERFORMANCE IN SENIOR SECONDARY SCHOOLS IN IDEMILI NORTH LOCAL GOVERNMENT AREA
Creators: name: Chikendu, Rebecca E
Publisher: name: TOP Journal
Year: 2024
Subjects: Availability, Utilization, Instructional materials and students' performance

description: The study examined effect of availability and utilization of instructional materials on students’ performance on computer in senior secondary schools. A survey design was used in the study. The population of the study comprised all the computer studies teachers that are currently teaching computer studies in the 13 public secondary schools in Idemili North Local Government Area.  Simple random sampling technique was used in selecting the sample for the study. The sample size for the study comprises of 80 teachers. The research instrument was structured questionnaire. The instrument for the study was validated by two lecturers in the Department of Science Education, Nnamdi Azikiwe University, Awka. The reliability of the study was carried out using Cronbach Alpha reliability technique and the coefficient of 0.76 was obtained. The data collected was analyzed using frequency counts, percentage and mean. The findings of the study revealed that instructional materials are highly available for teaching computer studies in secondary schools and also that in teachers’ and students’ views, the available instructional materials are not utilized for teaching computer Studies in senior secondary schools in Idemili North Local Government Area. Based on results obtained from the study it was recommended among others that Government should provide support to computer studies teachers so that they may obtain the desired educational facilities for the effective teaching of computer studies in secondary schools and teachers should indicate the instructional materials that are not adequately available to the school authorities and the government.
Mention Some of All
Creators: name: Dekker, Paul
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: In the interpretation of natural language one may distinguish three types of dynamics: there are the acts or moves that are made; there are structural relations between subsequent moves; and interlocutors reason about the beliefs and intentions of the participants in a particular language game. Building on some of the formalisms developed to account for the first two types of dynamics, I will generalize and formalize Gricean insights into the third type, and show by means of a case study that such a formalization allows a direct account of an apparent ambiguity: the ‘exhaustive’ versus the ‘mention some’ interpretation of questions and their answers. While the principles which I sketch, like those of Grice, are motivated by assumptions of rationality and cooperativity, they do not presuppose these assumptions to be always warranted. Key words: natural language interpretation, dynamic semantics, semantics-pragmatics interface, Gricean pragmatics, epistemic logic, decision theory.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
Controllable Rashba spin-orbit interaction in artificially engineered superlattices involving the heavy-fermion superconductor CeCoIn5
Creators: name: Shimozawa, M.
name: Goh, S. K.
name: Endo, R.
name: Kobayashi, R.
name: Watashige, T.
name: Mizukami, Y.
name: Ikeda, H.
name: Shishido, H.
name: Yanase, Y.
name: Terashima, T.
name: Shibauchi, T.
name: Matsuda, Y.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using a molecular beam epitaxy technique, we fabricate a new type of superconducting superlattices with controlled atomic layer thicknesses of alternating blocks between heavy fermion superconductor CeCoIn_5, which exhibits a strong Pauli pair-breaking effect, and nonmagnetic metal YbCoIn_5. The introduction of the thickness modulation of YbCoIn_5 block layers breaks the inversion symmetry centered at the superconducting block of CeCoIn_5. This configuration leads to dramatic changes in the temperature and angular dependence of the upper critical field, which can be understood by considering the effect of the Rashba spin-orbit interaction arising from the inversion symmetry breaking and the associated weakening of the Pauli pair-breaking effect. Since the degree of thickness modulation is a design feature of this type of superlattices, the Rashba interaction and the nature of pair-breaking are largely tunable in these modulated superlattices with strong spin-orbit coupling.
description: 5 pages, 4 figures, to be published in Phys. Rev. Lett
Bare Nominals and Optimal Inference
Creators: name: Cohen, Ariel
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: In this paper I discuss four type of bare nominal, and note that, in some sense, all of them appear to imply stereotypicality. I consider an account in terms of Bidirectional Optimality Theory: unmarked (bare) forms give rise to unmarked (stereotypical) interpretations. However, it turns out that, while the form of bare numerals is unmarked, the interpretation sometimes is not. I suggest that the crucial notion is not unmarkedness, but optimal inference: unmarked forms give rise to interpretations that are best used for drawing inferences. I propose a revision of Bidirectional Optimality Theory to reflect this.
description: Proceedings of Sinn und Bedeutung, Vol 10 No 1 (2006): Proceedings of Sinn und Bedeutung 10
One-loop string amplitudes in AdS$_5\times$S$^5$: Mellin space and sphere splitting
Creators: name: Aprile, F.
name: Drummond, J. M.
name: Glew, R.
name: Santagata, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study string corrections to one-loop amplitudes of single-particle operators ${\cal O}_p$ in $AdS_5 \times S^5$. The tree-level correlators in supergravity enjoy an accidental 10d conformal symmetry. Consequently, one observes a partial degeneracy in the spectrum of anomalous dimensions of double-trace operators and at the same time equality of many different correlators for different external charges $p_{i=1,2,3,4}$. The one-loop contribution is expected to lift such bonus properties, and its precise form can be predicted from tree-level data and consistency with the operator product expansion. Here we present a closed-form Mellin space formula for $\langle {\cal O}_{p_1}{\cal O}_{p_2}{\cal O}_{p_3} {\cal O}_{p_4}\rangle$ at order $(α')^3$, valid for arbitrary external charges $p_{i}$. Our formula makes explicit the lifting of the bonus degeneracy among different correlators through a feature we refer to as `sphere splitting'. While tree-level Mellin amplitudes come with a single crossing symmetric kernel, which defines the pole structure of the $AdS_5\times S^5$ amplitude, our one-loop amplitude naturally splits the $S^5$ part into two separate contributions. The amplitude also exhibits a remarkable consistency with the corresponding flat space IIB amplitude through the large $p$ limit.
description: 32 pages, extended introduction containing summary of results, 2 appendices
Interferometry with non-classical motional states of a Bose-Einstein condensate
Creators: name: van Frank, Sandrine
name: Negretti, Antonio
name: Berrada, Tarik
name: Bücker, Robert
name: Montangero, Simone
name: Schaff, Jean-François
name: Schumm, Thorsten
name: Calarco, Tommaso
name: Schmiedmayer, Jörg
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We demonstrate a two-pulse Ramsey-type interferometer for non-classical motional states of a Bose-Einstein condensate in an anharmonic trap. The control pulses used to manipulate the condensate wavefunction are obtained from Optimal Control Theory and directly optimised to maximise the interferometric contrast. They permit a fast manipulation of the atomic ensemble compared to the intrinsic decay and many-body dephasing effects, and thus to reach an interferometric contrast of 92% in the experimental implementation.
description: 7 pages (including Supplementary Information), 3 figures