cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Determination of Lee-Yang edge singularities in QCD by rational approximations
Creators: name: Zambello, Kevin
name: Clarke, David A.
name: Dimopoulos, Petros
name: Di Renzo, Francesco
name: Goswami, Jishnu
name: Nicotra, Guido
name: Schmidt, Christian
name: Singh, Simran
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report updated results on the determination of Lee-Yang edge (LYE) singularities in $N_f = 2+1$ QCD using highly improved staggered quarks (HISQ) with physical masses on $N_τ= 4, 6, 8$ lattices. The singularity structure of QCD in the complex $μ_B$ plane is probed using conserved charges calculated at imaginary $μ_B$. The location of the singularities is determined by studying the (uncancelled) poles of multi-point Padé approximants. We show that close to the Roberge-Weiss (RW) transition, the location of the LYE singularities scales according to the $3$-$d$ $Z(2)$ universality class. By combining the new $N_τ= 6$ data with the $N_τ= 4$ data from our previous analysis we extract a rough estimate for the RW temperature in the continuum limit. We also discuss some preliminary results for the singularities close to the chiral phase transition obtained from simulations on $N_τ= 6, 8$ lattices.
description: 10 pages, 9 figures, Proceedings of the 39th International Symposium on Lattice Field Theory, 8-13 August 2022, Bonn, Germany
Towards Resistant Audio Adversarial Examples
Creators: name: Dörr, Tom
name: Markert, Karla
name: Müller, Nicolas M.
name: Böttinger, Konstantin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: I.2

description: Adversarial examples tremendously threaten the availability and integrity of machine learning-based systems. While the feasibility of such attacks has been observed first in the domain of image processing, recent research shows that speech recognition is also susceptible to adversarial attacks. However, reliably bridging the air gap (i.e., making the adversarial examples work when recorded via a microphone) has so far eluded researchers. We find that due to flaws in the generation process, state-of-the-art adversarial example generation methods cause overfitting because of the binning operation in the target speech recognition system (e.g., Mozilla Deepspeech). We devise an approach to mitigate this flaw and find that our method improves generation of adversarial examples with varying offsets. We confirm the significant improvement with our approach by empirical comparison of the edit distance in a realistic over-the-air setting. Our approach states a significant step towards over-the-air attacks. We publish the code and an applicable implementation of our approach.
The role of mirror neuron mechanisms in the anticipation of others’ actions in relation to autistic traits: An EEG study
Creators: name: Krol, Manon
name: Jellema, Tjeerd
Publisher: name: F1000Research
Year: 2015

description: The functional role of the mirror neuron mechanism (MNM), which becomes active during both action execution and action observation, is still hotly debated. The present study investigated whether the MNM becomes activated already prior to the onset of observed actions when, on the basis of contextual information, the occurrence of the action was anticipated. If so, this would suggest a specific role in action anticipation. Additionally, its relation with individual differences in autistic traits (AQ; Autistic-spectrum Quotient) was examined. The current study included two EEG experiments and in each experiment 23 typically-developed participants took part. In the first experiment, EEG recordings were made during the observation of video clips depicting hand actions. The second experiment included three real-life conditions: action execution, action observation with anticipation phase and action observation without anticipation phase. Reductions in the power of the sensory-motor alpha band (8-13 Hz; mu rhythm), which presumably reflect MNM activation, were determined. In the video action observation condition and the two real-life action observation conditions, a significantly reduced power in the mu rhythm was found during action observation but not prior to the onset of actions. In the action execution condition, the power was significantly reduced in both the anticipation and action phase. Furthermore, no significant correlation was found between mu rhythm suppression during action observation and the extent of autistic traits. The findings suggest that the MNM does not get activated during anticipation of upcoming actions. The relationship between MNM activity and AQ scores will be extended to include individuals with autism.
Specific heat of CeRhIn$_5$ in high magnetic fields: Magnetic phase diagram revisited
Creators: name: Mishra, S.
name: Demuer, A.
name: Aoki, D.
name: Sheikin, I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: CeRhIn$_5$ is a prototypical antiferromagnetic heavy-fermion compound, whose behavior in a magnetic field is unique. A magnetic field applied in the basal plane of the tetragonal crystal structure induces two additional phase transitions. When the magnetic field is applied along, or close to, the $c$ axis, a new phase characterized by a pronounced in-plane electronic anisotropy emerges at $B^* \approx$ 30 T, well below the critical field, $B_c \simeq$ 50 T, to suppress the antiferromagnetic order. The exact origin of this new phase, originally suggested to be an electronic-nematic state, remains elusive. Here we report low-temperature specific-heat measurements in CeRhIn$_5$ in high static magnetic fields up to 36 T applied along both the $a$ and $c$ axes. For fields applied along the $a$ axis, we confirmed the previously suggested phase diagram, and extended it to higher fields. This allowed us to observe a triple point at $\sim$ 30 T, where the first-order transition from an incommensurate to commensurate magnetic structure merges into the onset of the second-order antiferromagnetic transition. For fields applied along the $c$ axis, we observed a small but distinct anomaly at $B^*$, which we discuss in terms of a possible field-induced transition, probably weakly first-order. We further suggest that the transition corresponds to a change of magnetic structure. We revise magnetic phase diagrams of CeRhIn$_5$ for both principal orientations of the magnetic field based entirely on thermodynamic anomalies.
description: 6 pages, 5 figures + Supplemental Material (2 pages, 2 figures)
Turbulent air flow in forest stands: a wind tunnel study
Creators: name: Warland, Jon S.
Publisher: name: University of British Columbia
Year: 2009

description: This study used a wind tunnel to examine turbulent flow in thinned forests and downwind of shelterbelts. High frequency measurements of the wind components were made using a Dantec triaxial hot-wire probe. Four thinning treatments were studied, consisting of uniformly spaced model trees with plant area index (PAT) = 4.5, 1.7, 0.7 and 0.4. Turbulence statistics up to the fourth order, as well as results from quadrant analysis and spectral densities, were compared to a similar field study, showing good agreement between model and field results. Length and time scales associated with the canopy turbulence were described with linear stability theory. Forest thinning was shown to increase turbulent energy and momentum transport within the canopy. Four shelterbelt widths were studied in both laminar and turbulent flows. Profiles were measured at both upstream and downstream positions, and without shelterbelts present. Turbulence statistics up to the fourth order, spectral densities and results from quadrant analysis were examined. The turbulent flow cases showed little variation with width due to mixing of the flow by turbulence, while the laminar flow cases showed strong differences between widths extending much further downwind.
Habitat selection and trajectory of the Brazilian snake-necked turtle Hydromedusa maximiliani (Testudines: Chelidae) in southeastern Brazil: telemetry and thread-bobbins methods
Creators: name: Costa, Shirley Famelli Da
name: Souza, Franco Leandro
name: Georges, Arthur
name: Gruber, Bernd
name: Bertoluci, Jaime
Publisher: name: F1000Research
Year: 2015

description: Mobility, direction and trajectory from a point to another contains intrinsic information on the habitat use and selection by individuals. Thus, knowledge of these aspects is of utmost importance to describe distribution, abundance, gene flow, and behavioral interactions between individuals in a population. In order to analyze the trajectory, habitat use and selection of the vulnerable Snake-necked Turtle Hydromedusa maximiliani, 19 adult turtles (10 males and nine females) were fitted with radio-transmitters and another 18 animals (11 females and seven males) were monitored with thread-bobbins over 3-days periods monthly in October 2007, September 2008 to February 2009, and March to December 2010. We noticed an intense use of refuges along the trajectories, with strong fidelity to the river course, which coupled with their relatively sedentary behavior suggests that their needs for feeding and refuge are adequately provided within a small area of aquatic habitat. However, more studies are needed in order to understand their terrestrial excursions. These habitats are strongly associated with the most vulnerable life stages of these animals, such as nesting females, hatchlings and newly hatched young in search of aquatic habitats. The simultaneous use of telemetry and bobbins are highly recommended when animals show low mobility, as a detailed trail can bring important insights to the research and future monitoring and management programs.
Optimal rates for plug-in estimators of density level sets
Creators: name: Rigollet, Philippe
name: Vert, Régis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In the context of density level set estimation, we study the convergence of general plug-in methods under two main assumptions on the density for a given level $λ$. More precisely, it is assumed that the density (i) is smooth in a neighborhood of $λ$ and (ii) has $γ$-exponent at level $λ$. Condition (i) ensures that the density can be estimated at a standard nonparametric rate and condition (ii) is similar to Tsybakov's margin assumption which is stated for the classification framework. Under these assumptions, we derive optimal rates of convergence for plug-in estimators. Explicit convergence rates are given for plug-in estimators based on kernel density estimators when the underlying measure is the Lebesgue measure. Lower bounds proving optimality of the rates in a minimax sense when the density is Hölder smooth are also provided.
description: Published in at http://dx.doi.org/10.3150/09-BEJ184 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
General theory for extended-range percolation on simple and multiplex networks
Creators: name: Cirigliano, Lorenzo
name: Castellano, Claudio
name: Bianconi, Ginestra
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Extended-range percolation is a robust percolation process that has relevance for quantum communication problems. In extended-range percolation nodes can be trusted or untrusted. Untrusted facilitator nodes are untrusted nodes that can still allow communication between trusted nodes if they lie on a path of distance at most R between two trusted nodes. In extended-range percolation the extended-range giant component (ERGC) includes trusted nodes connected by paths of trusted and untrusted facilitator nodes. Here, based on a message passing algorithm, we develop a general theory of extended-range percolation, valid for arbitrary values of R as long as the networks are locally tree-like. This general framework allows us to investigate the properties of extended-range percolation on interdependent multiplex networks. While the extended-range nature makes multiplex networks more robust, interdependency makes them more fragile. From the interplay between these two effects a rich phase diagram merges including discontinuous phase transitions and reentrant phases. The theoretical predictions are in excellent agreement with extensive Monte-Carlo simulations. The proposed exactly solvable model constitutes a fundamental reference for the study of models defined through properties of extended-range paths.
description: 21 pages, 9 figures
Hansenocaris undetermined
Creators: name: Olesen, Jørgen
name: Grygier, Mark J.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Maxillopoda
Hansenocarididae
Hansenocaris
Hansenocaris undetermined

description: Y-nauplius Type AN
Figs 2, 19I–K
Material examined
JAPAN – Okinawa, Sesoko I., laboratory pier, 26°38ʹ09.4ʺ N, 127°51ʹ55.2ʺ E • 4 LSN; 1991–2005 (Tables 1 and S1).
Description
LAST-STAGE NAUPLIUS (LSN). Lecithotrophic. Body narrowly ovate in dorso-ventral view; about 1.7 times as long as wide; lateral margins tapering gradually towards caudal end with slight discontinuity at posterior end of cephalic shield. No lateral view available, but longitudinal axes of cephalon, trunk and dorso-caudal spine apparently nearly in same plane. Length 320–350 µm (ventral view of mounted exuviae, without dorso-caudal spine), greatest width ca 190 µm, greatest dorso-ventral thickness unknown but body apparently rather flattened. Labrum produced as trapezoidal elevation divided into facets by cuticular ridges; pores not examined in detail. Trunk with rows of 5 µm long spines along margins. Caudal end attenuate, terminating in ca 50 µm long dorso-caudal spine accompanied ventrally and farther forwards by pair of triangular, pointed furcal spines ca 5 µm long. Dorso-caudal spine broad-based but sharply pointed, with irregularly ridged proximal portion bearing a few spinules.
CYPRID VIEWED THROUGH CUTICLE OF LSN. No live specimens studied.
Identification and variation
Recognizable by its general shape and by its significantly smaller size compared to the otherwise similar Type Y (see above).
Distribution
Japan (Sesoko Island, Okinawa).
description: Published as part of Olesen, Jørgen & Grygier, Mark J., 2024, Taxonomic diversity of marine planktonic ' y-larvae' (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii, pp. 1-90 in European Journal of Taxonomy 929 (1) on page 51, DOI: 10.5852/ejt.2024.929.2479, http://zenodo.org/record/10876286
Gravitational Lensing by Wormholes
Creators: name: Nandi, Kamal Kanti
name: Zhang, Yuan-Zhong
name: Zakharov, Alexander V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational lensing by traversable Lorentzian wormholes is a ew possibility which is analyzed here in the strong field limit. Wormhole solutions are considered in the Einstein minimally coupled theory and in the brane world model. The observables in both the theories show significant differences from those arising in the Schwarzschild black hole lensing. As a corollary, it follows that wormholes with zero Keplerian mass exhibit lensing properties which are qualitatively (though not quantitatively) the same as those of a Schwarzschild black hole. Some special features of the considered solutions are pointed out.
description: 20 pages, no figures
Quantum walkers in a disordered lattice with power-law hopping
Creators: name: Domínguez-Castro, G. A.
name: Paredes, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the effects of interparticle interactions and power-law tunneling couplings on quantum walks executed by both a single one and a pair of hard-core bosons moving in clean and disordered one-dimensional lattices. For this purpose, we perform exact diagonalization to explicitly evaluate the short and long time probabilities of finding the walkers within a surveillance area. Our main conclusions, summarized in phase diagrams in the disorder-power-law and interaction-disorder spaces, allowed us to discern two different scenarios for the single and two quantum walkers dynamics. While in the single particle case the transition to localized and extended regimes is identified for well defined values of the disorder amplitude and power law hopping, those frontiers are replaced by diffuse contours in the interacting two particle case. In fact, counterintuitive transport regimes as diffusion enhanced by disorder, and space constrained dynamics assisted by both interactions and short tunneling range are found. Our results are of direct relevance for quantum systems with long-range interactions that are currently realized in the laboratory.
description: 8 pages, 10 figures
The importance of diagonal axes in aesthetic appreciation
Creators: name: Shwu-Lih Huang
name: Wen-Hung Liao
Publisher: name: F1000Research
Year: 2015

description: Balance as an important factor contributing to the aesthetic preference is supported by previous empirical evidence. The dynamic balance with respect to the various axes was manipulated in this research to evaluate the contribution of each axis and combination of axes. The material invented by Wilson and Chatterjee (2005) which composed of circles with unequal sizes was used in this study. In the first experiment, participants give their ratings about the aesthetic preference to a set of patterns randomly generated by the computer. The results show that two diagonal axes are important. In the second experiment, according to the axis of balance, there are four single-axis (vertical, horizontal, two diagonal) conditions, two double-axes (vertical-horizontal, diagonal) conditions, and two control (low balance, medium balance) conditions. The results show that double-axes/diagonal condition has higher preference scores compared to the control conditions. In contrast, double-axes/vertical-horizontal condition cannot have the similar advantage. This result is consistent with that obtained in the first experiment. Single-axis/vertical condition also has higher scores than control condition, implying its unique importance. Overall, the results implicate the importance of diagonal axes in aesthetic preference that may be explained by the expression power of dynamics.
On gamma factors for representations of finite general linear groups
Creators: name: Soudry, David
name: Zelingher, Elad
Publisher: name: arXiv
Year: 2023
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 20C33, 11F66, 11T24

description: We use the Langlands--Shahidi method in order to define the Shahidi gamma factor for a pair of irreducible generic representations of $\operatorname{GL}_n\left(\mathbb{F}_q\right)$ and $\operatorname{GL}_m\left(\mathbb{F}_q\right)$. We prove that the Shahidi gamma factor is multiplicative and show that it is related to the Jacquet--Piatetski-Shapiro--Shalika gamma factor. As an application, we prove a converse theorem based on the absolute value of the Shahidi gamma factor, and improve the converse theorem of Nien. As another application, we give explicit formulas for special values of the Bessel function of an irreducible generic representation of $\operatorname{GL}_n\left(\mathbb{F}_q\right)$.
description: 30 pages. Comments are welcome. v2: This version contains all changes that were made for submission in Essential Number Theory. Numbering has changed from v1
The Sun as a revolving-field magnetic alternator with a wobbling-core rotator from real data
Creators: name: Omerbashich, Mensur
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Spectral Theory (math.SP)
subject: Chaotic Dynamics (nlin.CD)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: J.2; G.1.2; G.3
subject: 85A04 (Primary) 70K30, 37M10, 62M15 (Secondary)

description: Rather than as a star classically assumed to feature elusive dynamo or a proverbial engine and impulsively alternating polarity, the Sun reveals itself in the 385.8-2.439-nHz (1-mo-13-yr) band of polar (ϕSun>|70°|) wind's decadal dynamics, dominated by fast (>700 km s^-1) winds, as a globally completely vibrating revolving-field magnetic alternator at work at all times. Thus North-South separation of 1994-2008 Ulysses <10 nT wind polar samplings reveals spectral signatures of an entirely >99%-significant Sun-borne global sharp Alfven resonance (AR) governed by Ps=~11-yr Schwabe global damping (equilibrium) mode northside, ~10-yr degeneration equatorially, and ~9-yr southside. AR is accompanied by a symmetrical antiresonance P(-) whose both N/S tailing harmonics P(-17) are the well-known PR=~154-day (Ps/3/3/3 to +-0.1%) Rieger period dominating solar-system (planetary) dynamics and space weather. Upward drifting low-frequency trends reveal a rigid core; undertones a core offset away from apex. Core wobble at 2.2+/-0.1-yr triggers AR. Multiple total spectral symmetries of solar activity (historical solar-cycle lengths, sunspot and calcium numbers) expose the solar alternator moderating sunspots, nanoflares and CMEs that resemble machinery sparking. Unlike a resonating motor restrained from separating its casing, the cageless Sun lacks a stator and vibrates freely, resulting in all-spin and mass release (fast winds) in an axial shake-off beyond L1. The result was verified against remote data and the experiment, replacing dynamo with magnetoalternator and advancing basic knowledge on the >100 billion trillions solar-type stars. Shannon's theory-based Gauss-Vanicek spectral analysis revolutionizes astrophysics by rigorously simulating fleet formations from a single spacecraft and physics by computing nonlinear global dynamics directly (rendering spherical approximation obsolete).
description: 30 printed pages, 14 figures, 6 tables; pre-publishing proof version. Press Release: https://www.openpr.com/news/3337049.html
Velocity Spectrum for HI at High Latitudes
Creators: name: Chepurnov, A.
name: Lazarian, A.
name: Stanimirovic, S.
name: Heiles, C.
name: Peek, J. E. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we present the results of the statistical analysis of high-latitude HI turbulence in the Milky Way. We have observed HI in the 21 cm line, obtained with the Arecibo L-Band Feed Array (ALFA) receiver at the Arecibo radio telescope. For recovering of velocity statistics we have used the Velocity Coordinate Spectrum (VCS) technique. In our analysis we have used direct fitting of the VCS model, as its asymptotic regimes are questionable for Arecibo's resolution and given the restrictions from thermal smoothing of the turbulent line. We have obtained a velocity spectral index $3.87 \pm 0.11$, an injection scale of $140 \pm 80$ pc, and an HI cold phase temperature of $52 \pm 11$ K. The spectral index is steeper than the Kolmogorov index and can be interpreted as being due to shock-dominated turbulence.
description: Accepted to ApJ
Adaptive Resource Allocation for Workflow Containerization on Kubernetes
Creators: name: Shan, Chenggang
name: Wu, Chuge
name: Xia, Yuanqing
name: Guo, Zehua
name: Liu, Danyang
name: Zhang, Jinhui
Publisher: name: arXiv
Year: 2023
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: In a cloud-native era, the Kubernetes-based workflow engine enables workflow containerized execution through the inherent abilities of Kubernetes. However, when encountering continuous workflow requests and unexpected resource request spikes, the engine is limited to the current workflow load information for resource allocation, which lacks the agility and predictability of resource allocation, resulting in over and under-provisioning resources. This mechanism seriously hinders workflow execution efficiency and leads to high resource waste. To overcome these drawbacks, we propose an adaptive resource allocation scheme named ARAS for the Kubernetes-based workflow engines. Considering potential future workflow task requests within the current task pod's lifecycle, the ARAS uses a resource scaling strategy to allocate resources in response to high-concurrency workflow scenarios. The ARAS offers resource discovery, resource evaluation, and allocation functionalities and serves as a key component for our tailored workflow engine (KubeAdaptor). By integrating the ARAS into KubeAdaptor for workflow containerized execution, we demonstrate the practical abilities of KubeAdaptor and the advantages of our ARAS. Compared with the baseline algorithm, experimental evaluation under three distinct workflow arrival patterns shows that ARAS gains time-saving of 9.8% to 40.92% in the average total duration of all workflows, time-saving of 26.4% to 79.86% in the average duration of individual workflow, and an increase of 1% to 16% in CPU and memory resource usage rate.
An extreme thermal cycling reliability test of ATLAS ITk Strips barrel modules
Creators: name: Tishelman-Charny, A.
name: Affolder, A.
name: Capocasa, F.
name: Duden, E.
name: Fadeyev, V.
name: Gignac, M.
name: Helling, C.
name: Herde, H.
name: Johnson, J.
name: Lynn, D.
name: Morii, M.
name: Mitra, A.
name: Poley, L.
name: Sciolla, G.
name: Stucci, S.
name: Sharma, P.
name: Van Nieuwenhuizen, G.
name: Wallin, E.
name: Wang, A.
name: Wonsak, S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: At the end of Run 3 of the Large Hadron Collider (LHC), the accelerator complex will be upgraded to the High-Luminosity LHC (HL-LHC) in order to increase the total amount of data provided to its experiments. To cope with the increased rates of data, radiation, and pileup, the ATLAS detector will undergo a substantial upgrade, including a replacement of the Inner Detector with a future Inner Tracker, called the ITk. The ITk will be composed of pixel and strip sub-detectors, where the strips portion will be composed of 17,888 silicon strip detector modules. During the HL-LHC running period, the ITk will be cooled and warmed a number of times from about ${-35}^\circ$C to room temperature as part of the operational cycle, including warm-ups during yearly shutdowns. To ensure ITk Strips modules are functional after these expected temperature changes, and to ensure modules are mechanically robust, each module must undergo ten thermal cycles and pass a set of electrical and mechanical criteria before it is placed on a local support structure. This paper describes the thermal cycling Quality Control (QC) procedure, and results from the barrel pre-production phase (about 5% of the production volume). Additionally, in order to assess the headroom of the nominal QC procedure of 10 cycles and to ensure modules don't begin failing soon after, four representative ITk Strips barrel modules were thermally cycled 100 times - this study is also described.
$SU(N)\to SU(2)$ symmetry breaking in quantum antiferromagnets
Creators: name: Kolezhuk, A. K.
name: Zavertanyi, T. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a $SU(2)$-symmetric spin-${3}/{2}$ system on a bipartite lattice close to the antiferromagnetic $SU(4)$-symmetric point, which can be described by the $CP^{3}$ model with a perturbation breaking the symmetry from $SU(4)$ down to $SU(2)$ and favoring the Néel ordering. We show that the effective theory of the perturbed model is not the usual $O(3)$ nonlinear sigma model (NLSM), but rather the $O(3)\times O(2)$ NLSM. We show that in the presence of perturbation, the topological charge $q$ of the $CP^{3}$ field is connected to the $O(3)$-NLSM type topological charge of the spin texture $Q$ (defined in a usual way via the unit Néel vector) by the relation $q=3Q$, thus under the influence of the perturbation unit-charge skyrmions of $CP^{3}$ model bind into triplets. We also show that in the general spin-$S$ case, symmetry breaking from $SU(2S+1)$ to $SU(2)$ results in the general relation $2S Q_{O(3)}=q_{CP^{2S}}$ between $CP^{2S}$ and $O(3)$ charges, so one can expect $2S$-multiplet binding of skyrmions.
description: 8 pages
Is Kinetic Growth Walk equivalent to canonical Self Avoiding Walk?
Creators: name: Ponmurugan, M.
name: Narasimhan, S. L.
name: Murthy, K. P. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a Monte Carlo study of Kinetic Growth Walk on square as well as triangular lattice to show that it is not equivalent to canonical Self Avoiding Walk.
description: Eight pages LaTex file, three eps figures; Eq.(3) is corrected now. Physica A (accepted)
Nonlinear Optimal Guidance for Fixed-Time Impact on a Stationary Target
Creators: name: Wang, Kun
name: Chen, Zheng
name: Wang, Han
name: Li, Jun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper is concerned with devising the nonlinear optimal guidance for intercepting a stationary target with a fixed impact time. According to Pontryagin's Maximum Principle (PMP), some optimality conditions for the solutions of the nonlinear optimal interception problem are established, and the structure of the corresponding optimal control is presented. By employing the optimality conditions, we formulate a parameterized system so that its solution space is the same as that of the nonlinear optimal interception problem. As a consequence, a simple propagation of the parameterized system, without using any optimization method, is sufficient to generate enough sampled data for the mapping from current state and time-to-go to the optimal guidance command. By virtue of the universal approximation theorem, a feedforward neural network, trained by the generated data, is able to represent the mapping from current state and time-to-go to the optimal guidance command. Therefore, the trained network eventually can generate fixed-impact-time nonlinear optimal guidance within a constant time. Finally, the developed nonlinear optimal guidance is exemplified and studied through simulations, showing that the nonlinear optimal guidance law performs better than existing interception guidance laws.
Towards Convectons in the Supercritical Regime: Homoclinic Snaking in Natural Doubly Diffusive Convection
Creators: name: Tumelty, J.
name: Beaume, C.
name: Rucklidge, A. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Fluids subject to both thermal and compositional variations can undergo doubly diffusive convection when these properties both affect the fluid density and diffuse at different rates. A variety of patterns can arise from these buoyancy-driven flows, including spatially localised states known as convectons, which consist of convective fluid motion localised within a background of quiescent fluid. We consider these states in a vertical slot with the horizontal temperature and solutal gradients providing competing effects to the fluid density while allowing the existence of a conduction state. In this configuration, convectons have been studied with specific parameter values where the onset of convection is subcritical, and the states have been found to lie on a pair of secondary branches that undergo homoclinic snaking in a parameter regime below the onset of linear instability. In this paper, we show that convectons persist into parameter regimes in which the primary bifurcation is supercritical and there is no bistability, despite coexistence between the stable conduction state and large-amplitude convection. We detail this transition by considering spatial dynamics and observe how the structure of the secondary branches becomes increasingly complex owing to the increased role of inertia at low Prandtl numbers.
Orbifold GUT model with nine Higgs doublets
Creators: name: Brahmachari, Biswajoy
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a non-supersymmetric orbifold GUT based on SU(5) symmetry. It is a modification of Kawamura's 5-D orbifold GUT model. The difference lies in the choice of Higgs scalars as we have allowed only 5-plets of SU(5) in the GUT scale. This variant was originally proposed by Brahmachari and Raychoudhuri. Proton decay problem and the doublet triplet splitting problems are solved by extra dimensional mechanism. The unification scale is around $5.0 \times 10^{13}$ GeVs. In low energy there are nine Higgs doublets. One at the 100 GeV region and eight others degenerate at around 1.4 TeV. It is an attractive non-supersymmetric extension of standard model with very rich collider physics phenomenology.
description: Plenary Talk at International Workshop on Grand Unified Theories: Current Status and Future Prospects, Ritsumeikan University, Japan, Dec 17-19, 2007
Enhancement of piezoelectric properties in a narrow cerium doping range of $\text{Ba}_{1-x}\text{Ca}_{x}\text{Ti}_{1-y}\text{Zr}_{y}\text{O}_{3}$ evidenced by high throughput experiment
Creators: name: Nadaud, Kevin
name: Nataf, Guillaume F.
name: Jaber, Nazir
name: Negulescu, Béatrice
name: Giovannelli, Fabien
name: Andreazza, Pascal
name: Birnal, Pierre
name: Wolfman, Jérôme
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Lead-free materials based on the $\text{(Ba,Ca)(Zr,Ti)O}_{3}$ (BCZT) system exhibit excellent electromechanical properties that can be strongly modified by small amounts of dopants. Here, we use a high throughput strategy to unravel the influence of aliovalent doping with Ce on dielectric and piezoelectric properties of BCTZ. We synthesize and characterize a single BCTZ thin film with a composition gradient from undoped to 0.2 mol % cerium doping. The cerium doping increases the piezoelectric coefficient from $42.3\pm 2.9 \text{pm V}^{-1}$ (undoped) to $63\pm 2.4 \text{pm V}^{-1}$ for 0.06 Ce-mol\%, and then decreases to $38.4 \pm 1.3 \text{pm V}^{-1}$ for the maximum amount of cerium (0.2 mol %). An investigation of sub-coercive field non-linearities reveal that these variations are not only induced by changes in dynamics and densities of domain walls. The results highlight the advantage of high throughput techniques to identify ideal compositions for applications, without synthesizing a high number of samples with unavoidable sample-to-sample variations.
Context-aware robot control using gesture episodes
Creators: name: Vanc, Petr
name: Behrens, Jan Kristof
name: Stepanova, Karla
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Collaborative robots became a popular tool for increasing productivity in partly automated manufacturing plants. Intuitive robot teaching methods are required to quickly and flexibly adapt the robot programs to new tasks. Gestures have an essential role in human communication. However, in human-robot-interaction scenarios, gesture-based user interfaces are so far used rarely, and if they employ a one-to-one mapping of gestures to robot control variables. In this paper, we propose a method that infers the user's intent based on gesture episodes, the context of the situation, and common sense. The approach is evaluated in a simulated table-top manipulation setting. We conduct deterministic experiments with simulated users and show that the system can even handle personal preferences of each user.
description: 7 pages, 8 figures, accepted for ICRA 2023
Transmission properties of time-dependent one-dimensional metamaterials
Creators: name: Ammari, Habib
name: Cao, Jinghao
name: Hiltunen, Erik Orvehed
name: Rueff, Liora
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35J05, 35C20, 35P20, 74J20

description: We solve the wave equation with periodically time-modulated material parameters in a one-dimensional high-contrast resonator structure in the subwavelength regime exactly, for which we compute the subwavelength quasifrequencies numerically using Muller's method. We prove a formula in the form of an ODE using a capacitance matrix approximation. Comparison of the exact results with the approximations reveals that the method of capacitance matrix approximation is accurate and significantly more efficient. We prove various transmission properties in the aforementioned structure and illustrate them with numerical simulations. In particular, we investigate the effect of time-modulated material parameters on the formation of degenerate points, band gaps and k-gaps.
description: 23 pages, 11 figures
Emergent family of Tsallis entropies from the $q$-deformed combinatorics
Creators: name: Okamura, Keisuke
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We revisit the derivation of a formula for the $q$-generalised multinomial coefficient rooted in the $q$-deformed algebra, a foundational framework in the study of nonextensive statistics. Previous approximate expressions in the literature diverge as $q$ approaches 2 (or 0, depending on convention). In contrast, our derived formula provides an exact, smooth function for all real values of $q$, expressed as an infinite series expansion involving Tsallis entropies with sequential entropic indices, coupled with Bernoulli numbers. This formulation is achieved through the analytic continuation of the Riemann zeta function, stemming from the $q$-deformed factorials. Our formula thus offers a distinctive characterisation of Tsallis entropy within the $q$-deformed combinatorics. Throughout this exploration, we also highlight a symmetry within the $q$-deformed theory that links different values of the entropic parameter. Furthermore, we discuss extending our results to encompass more general, affinity-sensitive cases, building on the previously established framework of affinity-based extended entropy.
description: 10 pages, 1 figure
Generic Entanglement and Standard Form for N-mode Pure Gaussian States
Creators: name: Adesso, Gerardo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the correlation structure of pure N-mode Gaussian resources which can be experimentally generated by means of squeezers and beam splitters, whose entanglement properties are generic. We show that those states are specified (up to local unitaries) by N(N-1)/2 parameters, corresponding to the two-point correlations between any pair of modes. Our construction yields a practical scheme to engineer such generic-entangled N-mode pure Gaussian states by linear optics. We discuss our findings in the framework of Gaussian matrix product states of harmonic lattices, raising connections with entanglement frustration and the entropic area law.
description: 4 pages, 1 EPS figure. Revised, corrected and clarified. Final shortened version, published in PRL
Global coupling mechanism of Sun resonant forcing of Mars, Moon, and Earth seismicity
Creators: name: Omerbashich, Mensur
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Numerical Analysis (math.NA)
subject: Chaotic Dynamics (nlin.CD)
subject: Geophysics (physics.geo-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: G.1.2; G.3; J.2
subject: 86A15 (Primary) 85A20, 86-08, 37M10, 62M15 (Secondary)

description: Global seismicity on all three solar system's bodies with in situ measurements (Earth, Moon, and Mars) is due mainly to mechanical Rieger resonance (RR) of the solar wind's macroscopic flapping, driven by the well-known PRg=~154-day Rieger period and detected commonly in most heliophysical data types and the interplanetary magnetic field (IMF). Thus, InSight mission marsquakes rates are periodic with PRg as characterized by a very high (>>12) fidelity Φ=2.8 10^6 and by being the only >99%-significant spectral peak in the 385.8-64.3-nHz (1-180-day) band of highest planetary energies; the longest-span (v.9) release of raw data revealed the entire RR, excluding a tectonically active Mars. For check, I analyze rates of Oct 2015-Feb 2019, Mw5.6+ earthquakes, and all (1969-1977) Apollo mission moonquakes. To decouple magnetosphere and IMF effects, I study Earth and Moon seismicity during traversals of Earth magnetotail vs. IMF. The analysis showed with >99-67% confidence and Φ>>12 fidelity that (an unspecified majority of) moonquakes and Mw5.6+ earthquakes also recur at Rieger periods. About half of spectral peaks split but also into clusters that average to usual Rieger periodicities, where magnetotail reconnecting clears the signal. Moonquakes are mostly forced at times of solar-wind resonance and not just during tides, as previously and simplistically believed. Earlier claims that solar plasma dynamics could be seismogenic are confirmed. This result calls for reinterpreting the seismicity phenomenon and for reliance on global magnitude scales. Predictability of solar-wind macroscopic dynamics is now within reach, which paves the way for long-term physics-based seismic and space weather prediction and the safety of space missions. Gauss-Vanicek Spectral Analysis revolutionizes geophysics by computing nonlinear global dynamics directly (renders approximating of dynamics obsolete).
description: 46 printed pages, 8 figures, 5 tables; includes time-series of all Apollo natural moonquakes (1969-1977), all Mw5.6+ natural earthquakes between Oct 2015-Feb 2019, and all v.9 InSight natural marsquakes (Jan 2019-Sep 2021); pre-publishing proof version. Press Release: https://www.openpr.com/news/2982920.html
Nature of bright C-complex asteroids
Creators: name: Hasegawa, Sunao
name: Kasuga, Toshihiro
name: Usui, Fumihiko
name: Kuroda, Daisuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Most C-complex asteroids have albedo values less than 0.1, but there are some high-albedo (bright) C-complex asteroids with albedo values exceeding 0.1. To reveal the nature and origin of bright C-complex asteroids, we conducted spectroscopic observations of the asteroids in visible and near-infrared wavelength regions. As a result, the bright B-, C-, and Ch-type (Bus) asteroids, which are subclasses of the Bus C-complex, are classified as DeMeo C-type asteroids with concave curvature, B-, Xn-, and K-type asteroids. Analogue meteorites and material (CV/CK chondrites, enstatite chondrites/achondrites, and salts) associated with these spectral types of asteroids are thought to be composed of minerals and material exposed to high temperatures. A comparison of the results obtained in this study with the SDSS photometric data suggests that salts may have occurred in the parent bodies of 24 Themis and 10 Hygiea, as well as 2 Pallas. The bright C-complex asteroids in other C-complex families were likely caused by impact heating. Bright C-complex asteroids that do not belong to any families are likely to be impact metamorphosed carbonaceous chondrites, CV/CK chondrites, or enstatite chondrites/achondrites.
description: 20 pages, 5 figures, and 6 table, accepted for publication in PASJ
Form field theory on Calabi-Yau threefold
Creators: name: Loran, Farhang
name: Soltanpanahi, Hesam
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show how the natural Abelian duality of 2 and 3-form gravity theories on seven dimensional manifold CY3xS1, leads to an S-duality between 2 and 3-form theories on simply connected CY3. The massless sector of the 2-form field theory on CY3 corresponds to the A model string field theory. We discuss the complex structure independence of the 2-form theory for a general Kahler manifold and derive the holomorphic anomaly equations for simply connected CY3.
description: 24 pages, typos corrected
An Algorithm to Find Sums of Powers of Consecutive Primes
Creators: name: O'Sullivan, Cathal
name: Sorenson, Jonathan P.
name: Stahl, Aryn
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 11A41, 68Q25

description: We present and analyze an algorithm to enumerate all integers $n\le x$ that can be written as the sum of consecutive $k$th powers of primes, for $k>1$. We show that the number of such integers $n$ is asymptotically bounded by a constant times $$ c_k \frac{ x^{2/(k+1)} }{ (\log x)^{2k/(k+1)} }, $$ where $c_k$ is a constant depending solely on $k$, roughly $k^2$ in magnitude. This also bounds the asymptotic running time of our algorithm. We also give a lower bound of the same order of magnitude, and a very fast algorithm that counts such $n$. Our work extends the previous work by Tongsomporn, Wananiyakul, and Steuding (2022) who examined sums of squares of consecutive primes.
Rotational spectroscopy of a single molecular ion at sub part-per-trillion resolution
Creators: name: Collopy, Alejandra L.
name: Schmidt, Julian
name: Leibfried, Dietrich
name: Leibrandt, David R.
name: Chou, Chin-Wen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We use quantum-logic spectroscopy (QLS) and interrogate rotational transitions of a single CaH+ ion with a highly coherent frequency comb, achieving a fractional statistical uncertainty for a transition line center of 4 x 10^-13. We also improve the resolution in measurement of the Stark effect due to the radio-frequency (rf) electric field experienced by a molecular ion in an rf Paul trap, which we characterize and model. This allows us to determine the electric dipole moment of CaH+ by systematically displacing the ion to sample different known rf electric fields and measuring the resultant shifts in transition frequency.
description: 5 pages, 3 figures, plus supplemental material
การบังคับใช้สิทธิชุมชน: มองผ่านวัฒนธรรมทางกฎหมาย
Creators: name: นัทมน คงเจริญ
Publisher: name: คณะนิติศาสตร์ มหาวิทยาลัยเชียงใหม่
Year: 2558
Subjects: Community Forest Management, the commons, legal culture, legal consciousness

description: 1, 8, วารสารนิติสังคมศาสตร์
On Uhlmann's proof of the Monotonicity of the Relative Entropy
Creators: name: Pérez-Pardo, Juan Manuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This article presents in a self-contained way A. Uhlmann's celebrated Theorem of monotonicity of the relative entropy under completely positive and trace preserving maps. The Theorem is presented in its more general form and meaningful examples are given.
description: To be published in Particles, Fields and Topology: Celebrating A.P. Balachandran, a Festschrift volume for A.P. Balachandran