cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Theory of Thomson scattering in inhomogeneous media
Creators: name: Kozlowski, P. M.
name: Crowley, B. J. B.
name: Gericke, D. O.
name: Regan, S. P.
name: Gregori, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Thomson scattering of laser light is one of the most fundamental diagnostics of plasma density, temperature and magnetic fields. It relies on the assumption that the properties in the probed volume are homogeneous and constant during the probing time. On the other hand, laboratory plasmas are seldom uniform and homogeneous on the temporal and spatial dimensions over which data is collected. This is partic- ularly true for laser-produced high-energy-density matter, which often exhibits steep gradients in temperature, density and pressure, on a scale determined by the laser focus. Here, we discuss the modification of the cross section for Thomson scattering in fully-ionized media exhibiting steep spatial inhomogeneities and/or fast temporal fluctuations. We show that the predicted Thomson scattering spectra are greatly altered compared to the uniform case, and may even lead to violations of detailed balance. Therefore, careful interpretation of the spectra is necessary for spatially or temporally inhomogeneous systems.
description: 18 pages, 4 figures. Publication with corrected referencing for submitted article: http://www.nature.com/articles/srep24283
3d $\mathcal{N}=4$ mirror symmetry with 1-form symmetry
Creators: name: Nawata, Satoshi
name: Sperling, Marcus
name: Wang, Hao Ellery
name: Zhong, Zhenghao
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The study of 3d mirror symmetry has greatly enhanced our understanding of various aspects of 3d $\mathcal{N}=4$ theories. In this paper, starting with known mirror pairs of 3d $\mathcal{N}=4$ quiver gauge theories and gauging discrete subgroups of the flavour or topological symmetry, we construct new mirror pairs with non-trivial 1-form symmetry. By providing explicit quiver descriptions of these theories, we thoroughly specify their symmetries (0-form, 1-form, and 2-group) and the mirror maps between them.
description: v2: 38 pages + appendices; typos fixed, clarifications added, references added
Second order Killing tensors related to symmetric spaces
Creators: name: Porubov, E. O.
name: Tsiganov, A. V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We discuss the pairs of quadratic integrals of motion belonging to the $n$-dimensional space of independent integrals of motion in involution, that provide integrability of the corresponding Hamiltonian equations of motion by quadratures. In contrast to the Eisenhart theory, additional integrals of motion are polynomials of the fourth, sixth and other orders in momenta. The main focus is on the second-order Killing tensors corresponding to quadratic integrals of motion and relating to the special combinations of rotations and translations in Euclidean space.
description: 27 pages, LaTeX with amsfonts
Overview of EELISA Innovation Talks (1)
Creators: name: Schkade, David
Publisher: name: Zenodo
Year: 2023
Subjects: EELISA Innovation Talks
EELISA InnoCORE

description: This document is prepared within the work package WP7 – “Create the ‘embedding’ for EELISA-wide R & I structures (Optimize outreach)”, as deliverable D7.6 “Overview of EELISA innovation talks (1)” of the project EELISA INNOvation and COmmon REsearch strategy (hereinafter referred to as EELISA InnoCORE), co-funded by European Union’s Horizon 2020 research and innovation programme under grant agreement number 101035811. The document gives an overview of EELISA Innovation Talks (1) including conclusions from events held with the number of live attendees and evaluation of media distribution (hit rates etc.). The reporting period for this overview of EELISA Innovation Talks (1) spans from their conception before the end of May 2022, through their launch in June 2022, to the end of the first reporting period in November 2022. EELISA Innovation Talks were first conceptualized in task 7.4 and further elaborated with the aim to bring the knowledge generated in EELISA to the broader public while making EELISA a vibrant forum for innovation and Europe, and the world, a better place. These are the main goals of this monthly event series that gives the stage to our best EELISA researchers and innovators to discuss the possibilities, risks, and opportunities of technology and innovation for sustainable development. Each session is hosted by a different EELISA institution and streamed to the world on the EELISA YouTube channel from Madrid, Paris, Pisa, Erlangen, Nuremberg, Budapest, Bucharest, or Istanbul. Each partner institution can choose from a variety of appealing formats such as panel discussions, live talks, live interviews, or any other interactive format. In the first reporting period, EELISA Innovation Talks were hosted by BME, FAU, UPB, SNS, and SSSA on a variety of topics related to innovation and allowed for some first insights into the respective innovation ecosystems as well as into the challenges and opportunities they respectively we are facing.
description: (DRAFT NOT YET APPROVED BY EUROPEAN COMMISSION)
Derivation and Analysis of Lattice Boltzmann Schemes for the Linearized Euler Equations
Creators: name: Otte, Philipp
name: Frank, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M12

description: We derive Lattice Boltzmann (LBM) schemes to solve the Linearized Euler Equations in 1D, 2D, and 3D with the future goal of coupling them to an LBM scheme for Navier Stokes Equations and an Finite Volume scheme for Linearized Euler Equations. The derivation uses the analytical Maxwellian in a BGK model. In this way, we are able to obtain second-order schemes. In addition, we perform an $L^2$-stability analysis. Numerical results validate the approach.
Through the lens of Sgr A$^*$: identifying and resolving strongly lensed Continuous Gravitational Waves beyond the Einstein radius
Creators: name: Savastano, Stefano
name: Vernizzi, Filippo
name: Zumalacárregui, Miguel
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Lensed gravitational waves will offer new means to probe the distribution of matter in the universe, complementary to electromagnetic signals. Lensed continuous gravitational waves provide new challenges and opportunities beyond those of transient compact binary coalescence. Here we consider continuous gravitational waves emitted by isolated neutron stars and lensed by Sgr A$^*$, the supermassive black hole at the center of our galaxy, a system observable by the next generation of gravitational wave detectors. We analyze the signatures of this system in detail, addressing parameter estimation and model selection. Future detectors can distinguish lensed continuous waves and measure their parameters with precision $\sim 1 - 10\%$ for sources within $2-4$ Einstein radii of Sgr A$^*$, depending on the source distance, thanks to the relative motion of the observer-lens-source system. The chances of observing strongly-lensed neutron stars increase by one order of magnitude relative to previous estimates, thanks to the possibility of detecting lensed systems at several Einstein radii. Multiple images can be resolved with an angular accuracy $\sim 10$mas, comparable to the best optical telescopes. Image localization probes deviations from axial symmetry and the existence of companions to Sgr A$^*$ in regions complementary to stellar orbits and black hole imaging. Our methods and many of our results extend to other lenses (e.g. galactic substructure) and sources (e.g. long-lived inspiralling binaries), rendering lensed continuous gravitational waves into versatile probes of astrophysics and fundamental physics.
description: 15 pages, 10 figures
Mutual Information in Rank-One Matrix Estimation
Creators: name: Krzakala, Florent
name: Xu, Jiaming
name: Zdeborová, Lenka
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the estimation of a n-dimensional vector x from the knowledge of noisy and possibility non-linear element-wise measurements of xxT , a very generic problem that contains, e.g. stochastic 2-block model, submatrix localization or the spike perturbation of random matrices. We use an interpolation method proposed by Guerra and later refined by Korada and Macris. We prove that the Bethe mutual information (related to the Bethe free energy and conjectured to be exact by Lesieur et al. on the basis of the non-rigorous cavity method) always yields an upper bound to the exact mutual information. We also provide a lower bound using a similar technique. For concreteness, we illustrate our findings on the sparse PCA problem, and observe that (a) our bounds match for a large region of parameters and (b) that it exists a phase transition in a region where the spectum remains uninformative. While we present only the case of rank-one symmetric matrix estimation, our proof technique is readily extendable to low-rank symmetric matrix or low-rank symmetric tensor estimation
description: 8 pages, 1 figures
Ultra-forward particle production from CGC+Lund fragmentation
Creators: name: Albacete, Javier L.
name: Rodríguez, Pablo Guerrero
name: Nara, Yasushi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an analysis of data on single inclusive pion production measured by the LHCf collaboration in high-energy proton-proton and proton-nucleus at ultra-forward rapidities, $8.8 \leq\! y\leq \!10.8$. We also analyse forward RHIC data for calibration purposes. Our analysis relies on the use of a Monte Carlo event generator that combines a perturbative description of the elementary scattering process at partonic level based on the hybrid formalism of the Color Glass Condensate with an implementation of hadronization in the framework of the Lund string fragmentation model. This procedure allows us to reach values of the momenta of the produced particles as low as detected experimentally $p_t\sim0.1$ GeV. We achieve a good description of single inclusive spectra of charged particles and neutral pions at RHIC and the LHC respectively, and nuclear modification factors for proton-lead collisions at the LHC. Our results add evidence to the idea that particle production in the domain of very small Bjorken-$x$ is dominated by the saturation effects encoded in the unintegrated gluon distribution of the target. Being forward particle production of key importance in the development of air showers, we stress that this approach allows for a theoretically controlled extrapolation of our results to the scale of ultra-high energy cosmic rays, thus serving as starting point for future works on this topic.
description: 13 pages, 7 figures
EELISA Media Channels for Innovation
Creators: name: Schkade, David
Publisher: name: Zenodo
Year: 2023
Subjects: EELISA Media Channels
Innovation
EELISA InnoCORE

description: This document is prepared within the work package WP7 – “Create the ‘embedding’ for EELISA-wide R & I structures (Optimize outreach)”, as deliverable D7.5 “EELISA media channels for innovation” of the project EELISA INNOvation and COmmon REsearch strategy (hereinafter referred to as EELISA InnoCORE), co-funded by European Union’s Horizon 2020 research and innovation programme under grant agreement number 101035811. The document details the EELISA media channels to be used to maximize the impact of R & I actions. These media channels are specific to the target audiences of the different tasks in WP7, but they can also contribute to maximize the impact of R & I actions of EELISA as a whole and will be shared with the EELISA Communication Office. Within the framework of WP7, we can distinguish between two different target audiences for which we need specific media channels: First, we target the general public at our universities and beyond with the EELISA Innovation Talks (task 7.4). Second, we target employees of innovation hubs, business incubators, and knowledge and technology transfer services, students, start-ups, founders, and maybe even investors with the innovation and entrepreneurship activities in EELISA InnoCORE (task 7.1 “Interaction platforms and citizen science”, task 7.2 “Create an infrastructure of business incubators across EELISA”, and task 7.3 “Implementing an EELISA-wide start-up initiative”). The EELISA media channels for innovation are basically differentiated according to these two different target audiences.
description: (DRAFT NOT YET APPROVED BY EUROPEAN COMMISSION)
Derbesia Solier 1846
Creators: name: Mora-Valdés, Laura Areli
name: Riosmena-Rodríguez, Rafael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Chlorophyta
Ulvophyceae
Bryopsidales
Derbesiaceae
Derbesia

description: Derbesia Solier (1846: 452)
 Derbesia hollenbergii W.R. Taylor (1945: 75–76).
 TAXONOMIC STATUS: According to Pedroche et al. (2005) and Guiry & Guiry (2014) this name is currently valid; however the holotype has not been evaluated comparatively with modern collections to segregate this species from others within the genus.
 RECORDS IN THE GULF OF CALIFORNIA: ND (González-González et al. 1996: 135), Isla Cholla and El Solitario (Dawson 1959: 6–14), Isla Carmén (Dawson 1961: 380). Unpublished data: Castillo-Álvarez (1990: 70, table 1).
 Derbesia marina (Lyngbye) Solier (1846: 453).
 TAXONOMIC STATUS: Kraft (2000: 621) mentioned that this species has been used in many regions of the world, but there are inconsistencies in the diacritic traits considered (how) to discriminate (delineate) between D. marina and other species. A regional assessment is required. According to Norris (2010) and Guiry & Guiry (2015) this particular name is currently taxonomicaly valid. See comments under the name Halicystis oval (Lyngbye) Areschoug.
 RECORDS IN THE GULF OF CALIFORNIA: Calerita (Rodríguez-Morales & Siqueiros-Beltrones 1999: 22), Bahía de Los Angeles (Pacheco-Ruíz & Zertuche-González 1996b: 432), Cabo Pulmo-Los Frailes (Anaya-Reyna & Riosmena-Rodríguez 1996: 904), Bahía de La Paz (Huerta-Múzquiz & Mendoza-González 1985: 44, Riosmena-Rodríguez & Paúl-Chávez 1997: 67), Bahía Concepción (Mateo-Cid et al. 1993: 52), Bahía de Banderas, Jalisco-Nayarit (Serviere-Zaragoza et al. 1993: 482, Serviere-Zaragoza et al. 1998: 169); Bahía del Rincón (Riosmena-Rodríguez et al. 2005: 13), Bahía de Santa Clara (Aguilar-Rosas et al. 2000b: 133, Norris 2010: 83–84). Unpublished data: Castillo-Álvarez (1990: 71 -table 1), Saad-Navarro (1997: XX), Vázquez-Borja (1999: table 1, 2).
 Derbesia turbinata M.A. Howe & Hoyt (1916: 106).
 TAXONOMIC STATUS: Norris (2010) mention that D. turbinata is equal to the other species of the genus reported from the Gulf of California. Morphological and molecular investigation are needed. According to Pedroche et al. (2005) and Guiry & Guiry (2014) this particular name is currently valid.
 RECORDS IN THE GULF OF CALIFORNIA: ND (González-González et al. 1996: 135), Las Ánimas (Dawson 1966b: 55, Norris & Bucher 1976: 4), Northern Gulf (Norris 2010: 83). Unpublished data: Castillo-Álvarez (1990: 72, table1).
description: Published as part of Mora-Valdés, Laura Areli & Riosmena-Rodríguez, Rafael, 2016, Checklist of the green (Ulvophyceae) macroalgae from the Gulf of California, México, pp. 203-247 in Phytotaxa 246 (4) on page 210, DOI: 10.11646/phytotaxa.246.4.1, http://zenodo.org/record/13678608
Chiral anomalies in 3D spin-orbit coupled metals: electrical, thermal, and gravitational anomaly
Creators: name: Das, Sunit
name: Das, Kamal
name: Agarwal, Amit
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The discovery of a chiral anomaly in Weyl semimetals, the non-conservation of chiral charge and energy across two opposite chirality Weyl nodes, has sparked immense interest in understanding its impact on various physical phenomena. Here, we demonstrate the existence of electrical, thermal, and gravitational quantum chiral anomalies in 3D spin-orbit coupled systems. Notably, these anomalies involve chiral charge transfer across two Fermi surfaces linked to a single Weyl-like point, rather than across opposite chirality Weyl nodes as in Weyl semimetals. Our findings reveal that the Berry curvature flux piercing the Fermi surface plays a critical role in distinguishing the `chirality' of the carriers and the corresponding chiral charge and energy transfer. Importantly, we demonstrate that these quantum chiral anomalies lead to interesting thermal spin transport such as the spin Nernst effect. Our results suggest that 3D spin-orbit coupled metals offer a promising platform for investigating the interplay between quantum chiral anomalies and charge and spin transport in non-relativistic systems.
description: 14 pages, and 4 figures. Seeking feedback, criticism or comments on this paper
On period ratios in modulated double-mode RR Lyrae stars
Creators: name: Smolec, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: With the help of linear pulsation models we briefly discuss the peculiar period ratios characteristic for modulated double-mode RR Lyrae stars.
description: RRL2015 conference, to appear in the Communications from the Konkoly Observatory of the Hungarian Academy of Sciences
Psilus dissidens Muesebeck 1980
Creators: name: Notton, David G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mymaridae
Psilus
Psilus dissidens

description: Psilus dissidens Muesebeck, 1980: 3, 4, 10, figs 7, 25, 36, 47, 48, 62.
Valid name
Psilus dissidens Muesebeck, 1980.
Summary of types
Paratype ♂.
description: Published as part of Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, pp. 1-123 in European Journal of Taxonomy 75 on page 84, DOI: 10.5852/ejt.2014.75, http://zenodo.org/record/3862773
An Apodized Kepler Periodogram for Separating Planetary and Stellar Activity Signals
Creators: name: Gregory, Philip C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A new apodized Keplerian (AK) model is proposed for the analysis of precision radial velocity (RV) data to model both planetary and stellar activity (SA) induced RV signals. A symmetrical Gaussian apodization function with unknown width and center can distinguish planetary signals from SA signals on the basis of the span of the apodization window. The general model for $m$ apodized Keplerian signals includes a linear regression term between RV and the stellar activity diagnostic $\log(R'hk)$, as well as an extra Gaussian noise term with unknown standard deviation. The model parameters are explored using a Bayesian fusion MCMC code. A differential version of the Generalized Lomb-Scargle periodogram that employs a control diagnostic provides an additional way of distinguishing SA signals and helps guide the choice of new periods. Results are reported for a recent international RV blind challenge which included multiple state of the art simulated data sets supported by a variety of stellar activity diagnostics. In the current implementation, the AK method achieved a reduction in SA noise by a factor of approximately 6. Final parameter estimates for the planetary candidates are derived from fits that include AK signals to model the SA components and simple Keplerians to model the planetary candidates. Preliminary results are also reported for AK models augmented by a moving average component that allows for correlations in the residuals.
description: 30 pages, 39 figures, MNRAS in press 13 Jan. 2016
Halicystis Areschoug 1850
Creators: name: Mora-Valdés, Laura Areli
name: Riosmena-Rodríguez, Rafael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Chlorophyta
Ulvophyceae
Bryopsidales
Codiaceae
Halicystis

description: Halicystis Areschoug (1850: 446)
 Halicystis ovalis (Lyngbye) Areschoug (1850: 447).
 TAXONOMIC STATUS: Norris (2010) mention that it is one phase of the life cycle of D. marina, referred for the northern Gulf epiphytic on the articulated coralline Amphiroa vanbosseae Me. Lemoine. According to Guiry & Guiry (2014). H. ovalis is currently regarded as a taxonomic synonym of D. marina, see comments under that name.
 RECORDS IN THE GULF OF CALIFORNIA: ND (Norris & Bucher 1976: 3–4, González-González et al. 1996: 137), Bahía de Los Angeles (Pacheco-Ruiz & Zertuche-González 1996b: table1), Northern Gulf (Norris 2010: 83–85).
description: Published as part of Mora-Valdés, Laura Areli & Riosmena-Rodríguez, Rafael, 2016, Checklist of the green (Ulvophyceae) macroalgae from the Gulf of California, México, pp. 203-247 in Phytotaxa 246 (4) on page 211, DOI: 10.11646/phytotaxa.246.4.1, http://zenodo.org/record/13678608
Stochastic gravitational wave background from the collisions of dark matter halos
Creators: name: Yan, Qiming
name: Ren, Xin
name: Zhao, Yaqi
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the effect of the dark matter (DM) halos collisions, namely collisions of galaxies and galaxy clusters, through gravitational bremsstrahlung, on the stochastic gravitational wave background. We first calculate the gravitational wave signal of a single collision event, assuming point masses and linear perturbation theory. Then we proceed to the calculation of the energy spectrum of the collective effect of all dark matter collisions in the Universe. Concerning the DM halo collision rate, we show that it is given by the product of the number density of DM halos, which is calculated by the extended Press-Schechter (EPS) theory, with the collision rate of a single DM halo, which is given by simulation results, with a function of the linear growth rate of matter density through cosmological evolution. Hence, integrating over all mass and distance ranges, we finally extract the spectrum of the stochastic gravitational wave background created by DM halos collisions. As we show, the resulting contribution to the stochastic gravitational wave background is of the order of $h_{c} \approx 10^{-29}$ in the band of $f \approx 10^{-15} Hz$. However, in very low frequency band, it is larger. With current observational sensitivity it cannot be detected.
description: 11 pages,4 figures
Quantum corrections to the Mukhanov-Sasaki equations
Creators: name: Gomar, Laura Castelló
name: Martín-Benito, Mercedes
name: Marugán, Guillermo A. Mena
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, a lot of attention has been paid to the modifications of the power spectrum of primordial fluctuations caused by quantum cosmology effects. The origin of these modifications are corrections to the Mukhanov-Sasaki equations that govern the propagation of the primeval cosmological perturbations. The specific form of these corrections depends on a series of details of the quantization approach and of the prescription followed to implement it. Generally, nonetheless, the complexity of the theoretical quantum formulation is simplified in practice appealing to a semiclassical or effective approximation, in order to perform concrete numerical computations. In this work, we introduce technical tools and design a procedure to deal with these quantum corrections beyond the most direct approximations employed so far in the literature. In particular, by introducing an interaction picture, we extract the quantum dynamics of the homogeneous geometry in absence of scalar field potential and inhomogeneities, dynamics that has been intensively studied and that can be integrated. The rest of our analysis focuses on the interaction evolution, putting forward methods to cope with it. The ultimate aim is to develop treatments that increase our ability to discriminate between the predictions of different quantization proposals for cosmological perturbations.
description: 14 pages, version accepted for publication in Physical Review D
Cosmological Covariance of Fast Radio Burst Dispersions
Creators: name: Reischke, Robert
name: Hagstotz, Steffen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The dispersion of fast radio bursts (FRBs) is a measure of the large-scale electron distribution. It enables measurements of cosmological parameters, especially of the expansion rate and the cosmic baryon fraction. The number of events is expected to increase dramatically over the coming years, and of particular interest are bursts with identified host galaxy and therefore redshift information. In this paper, we explore the covariance matrix of the dispersion measure (DM) of FRBs induced by the large-scale structure, as bursts from a similar direction on the sky are correlated by long wavelength modes of the electron distribution. We derive analytical expressions for the covariance matrix and examine the impact on parameter estimation from the FRB dispersion measure - redshift relation. The covariance also contains additional information that is missed by analysing the events individually. For future samples containing over $\sim300$ FRBs with host identification over the full sky, the covariance needs to be taken into account for unbiased inference, and the effect increases dramatically for smaller patches of the sky. Also forecasts must consider these effects as they would yield too optimistic parameter constraints. Our procedure can also be applied to the DM of the afterglow of Gamma Ray Bursts.
description: 8 pages, 5 figures, accepted by MNRAS, matches final submitted version
Market-based vs. Price-based Microgrid Optimal Scheduling
Creators: name: Parhizi, Sina
name: Khodaei, Amin
name: Shahidehpour, Mohammad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: An optimal scheduling model for a microgrid participating in the electricity distribution market in interaction with a Distribution Market Operator (DMO) is proposed in this paper. The DMO administers the established electricity market in the distribution level, sets electricity prices, determines the amount of the power exchange among market participants, and interacts with the Independent System Operator (ISO). Considering a predetermined main grid power transfer to the microgrid, the microgrid scheduling problem will aim at balancing the power supply and demand while taking financial objectives into account. Numerical simulations exhibit the application and the effectiveness of the proposed market-based microgrid scheduling model and further investigate merits over a price-based scheme.
description: Accepted to the IEEE Transactions on Smart Grid
On the evolution of the Anisotropic Scaling of Magnetohydrodynamic Turbulence in the Inner Heliosphere
Creators: name: Sioulas, Nikos
name: Velli, Marco
name: Huang, Zesen
name: Shi, Chen
name: Bowen, Trevor A.
name: Chandran, B. D. G.
name: Liodis, Ioannis
name: Davis, Nooshin
name: Bale, Stuart D.
name: Horbury, T. S.
name: de Wit, Thierry Dudok
name: Larson, Davin
name: Kasper, Justin
name: Owen, Christopher J.
name: Stevens, Michael L.
name: Case, Anthony
name: Pulupa, Marc
name: Malaspina, David M.
name: Bonnell, J. W.
name: Goetz, Keith
name: Harvey, Peter R.
name: MacDowall, Robert J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Space Physics (physics.space-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We analyze a merged Parker Solar Probe ($PSP$) and Solar Orbiter ($SO$) dataset covering heliocentric distances $13 \ R_{\odot} \lesssim R \lesssim 220$ $R_{\odot}$ to investigate the radial evolution of power and spectral-index anisotropy in the wavevector space of solar wind turbulence. Our results show that anisotropic signatures of turbulence display a distinct radial evolution when fast, $V_{sw} \geq ~ 400 ~km ~s^{-1}$, and slow, $V_{sw} \leq ~ 400 ~km ~s^{-1}$, wind streams are considered. The anisotropic properties of slow wind in Earth orbit are consistent with a ``critically balanced'' cascade, but both spectral-index anisotropy and power anisotropy diminish with decreasing heliographic distance. Fast streams are observed to roughly retain their near-Sun anisotropic properties, with the observed spectral index and power anisotropies being more consistent with a ``dynamically aligned'' type of cascade, though the lack of extended fast-wind intervals makes it difficult to accurately measure the anisotropic scaling. A high-resolution analysis during the first perihelion of PSP confirms the presence of two sub-ranges within the inertial range, which may be associated with the transition from weak to strong turbulence. The transition occurs at $κd_{i} \approx 6 \times 10^{-2}$, and signifies a shift from -5/3 to -2 and -3/2 to -1.57 scaling in parallel and perpendicular spectra, respectively. Our results provide strong observational constraints for anisotropic theories of MHD turbulence in the solar wind.
description: Accepted to APJ
Analysis of the 24-Hour Activity Cycle: An illustration examining the association with cognitive function in the Adult Changes in Thought (ACT) Study
Creators: name: Wu, Yinxiang
name: Rosenberg, Dori E.
name: Greenwood-Hickman, Mikael Anne
name: McCurry, Susan M.
name: Proust-Lima, Cecile
name: Nelson, Jennifer C.
name: Crane, Paul K.
name: LaCroix, Andrea Z.
name: Larson, Eric B.
name: Shaw, Pamela A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: The 24-hour activity cycle (24HAC) is a new paradigm for studying activity behaviors in relation to health outcomes. This approach captures the interrelatedness of the daily time spent in physical activity (PA), sedentary behavior (SB), and sleep. We illustrate and compare the use of three popular approaches, namely isotemporal substitution model (ISM), compositional data analysis (CoDA), and latent profile analysis (LPA) for modeling outcome associations with the 24HAC. We apply these approaches to assess an association with a cognitive outcome, measured by CASI item response theory (IRT) score, in a cohort of 1034 older adults (mean [range] age = 77 [65-100]; 55.8% female; 90% White) who were part of the Adult Changes in Thought (ACT) Activity Monitoring (ACT-AM) sub-study. PA and SB were assessed with thigh-worn activPAL accelerometers for 7 days. We highlight differences in assumptions between the three approaches, discuss statistical challenges, and provide guidance on interpretation and selecting an appropriate approach. ISM is easiest to apply and interpret; however, the typical ISM model assumes a linear association. CoDA specifies a non-linear association through isometric logratio transformations that are more challenging to apply and interpret. LPA can classify individuals into groups with similar time-use patterns. Inference on associations of latent profiles with health outcomes need to account for the uncertainty of the LPA classifications which is often ignored. The selection of the most appropriate method should be guided by the scientific questions of interest and the applicability of each model's assumptions. The analytic results did not suggest that less time spent on SB and more in PA was associated with better cognitive function. Further research is needed into the health implications of the distinct 24HAC patterns identified in this cohort.
description: 51 pages, 11 tables, 8 figures
Holographic Josephson Junction from Massive Gravity
Creators: name: Hu, Ya-Peng
name: Li, Huai-Fan
name: Zeng, Hua-Bi
name: Zhang, Hai-Qing
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the holographic superconductor-normal metal-superconductor (SNS) Josephon junction in the massive gravity. In the homogeneous case of the chemical potential, we find that the graviton mass will make the normal metal-superconductor phase transition harder to take place. In the holographic model of Josephson junction, it is found that the maximal tunneling current will decrease according to the graviton mass. Besides, the coherence length of the junction decreases as well with respect to the graviton mass. If one interprets the graviton mass as the effect of momentum dissipation in the boundary field theory, it indicates that the stronger the momentum dissipation is, the smaller the coherence length is.
description: 14 pages,6 figures,misprints corrected,references added
A simple theory for quantum quenches in the ANNNI model
Creators: name: Robertson, Jacob H.
name: Senese, Riccardo
name: Essler, Fabian H. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent numerical study by Haldar et al. (Phys. Rev. X 11, 031062) it was shown that signatures of proximate quantum critical points can be observed at early and intermediate times after certain quantum quenches. Said work focused mainly on the case of the axial next-nearest neighbour Ising (ANNNI) model. Here we construct a simple time-dependent mean-field theory that allows us to obtain a quantitatively accurate description of these quenches at short times, which for reasons we explain remains a fair approximation at late times (with some caveats). Our approach provides a simple framework for understanding the reported numerical results as well as fundamental limitations on detecting quantum critical points through quench dynamics. We moreover explain the origin of the peculiar oscillatory behaviour seen in various observables as arising from the formation of a long-lived bound state.
description: 25 pages, 13 figures
Optical vibrations in alkali halide crystals
Creators: name: Stupka, Anton
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider long-wave phonon-polaritons and longitudinal optical phonons in alkali-halide ionic crystals. The model of point charges that are polarized in the self-consistent electromagnetic field in a dielectric environment is used. The standard dispersion laws for both branches of phonon-polaritons and longitudinal optical phonons are obtained. The transversal optical phonon frequency is found from the electrostatic equilibrium condition. It is proved by comparison with tabular data that the found frequency coincides with the ion plasma frequency multiplied on the relation $\sqrt{(\varepsilon_{\infty}+2)/(3(\varepsilon_0-\varepsilon_\infty))},$ where $\varepsilon_{\infty}$ and $\varepsilon_0$ are the high-frequency dielectric constant and the static one respectively.
description: keywords{ Alkali-halide ionic crystal; self-consistent electromagnetic field; long-wave oscillations; phonon-polariton; longitudinal optical phonon; electrostatic equilibrium; dielectric constant.} PACS{Phonons in crystal lattices, 63.20. e, Electrostatic waves and oscillations plasma waves, 52.35.Fp, Collective effects 71.45.-d}
Gamma-ray emission from spectrally resolved cosmic rays in galaxies
Creators: name: Werhahn, Maria
name: Girichidis, Philipp
name: Pfrommer, Christoph
name: Whittingham, Joseph
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Cosmic rays (CRs) are ubiquitous in the interstellar medium (ISM) of nearby galaxies, but many of their properties are not well-constrained. Gamma-ray observations provide a powerful tool in this respect, allowing us to constrain both the interaction of CR protons with the ISM and their transport properties. To help better understand the link between observational signatures and CR physics, we use a series of magneto-hydrodynamical (MHD) AREPO simulations of isolated galaxies performed using spectrally-resolved CR transport in every computational cell, with subsequent gamma-ray emission calculated using the CRAYON+ (Cosmic RAY emissiON) code. In each of our simulated halos, modelling the energy-dependent spatial diffusion of CRs leads to a more extended distribution of high-energy (~100 GeV) gamma rays compared to that predicted by a 'grey' steady-state model, which is especially visible in the corresponding emission maps and radial profiles. Despite this, the total gamma-ray spectra can often be well approximated by the steady-state model, although recovering the same spectral index typically requires a minor variation of the energy dependence of the diffusion coefficient. Our simulations reproduce the observed spectral indices and gamma-ray spectra of nearby star-forming galaxies and also match recent observations of the far infrared--gamma-ray relation. We find, however, that the spectrally resolved model yields marginally smaller luminosities for lower star formation rates compared to grey simulations of CRs. Our work highlights the importance of modelling spectrally resolved CR transport for an accurate prediction of spatially resolved high-energy gamma-ray emission, as will be probed by the upcoming Cherenkov Telescope Array observatory.
description: 18 pages, 11 figures, submitted to MNRAS, comments are welcome!
First 3D reconstruction of a blast furnace using muography
Creators: name: Cohu, Amélie
name: Chevalier, Antoine
name: Nechyporuk, Oleksandr
name: Franzen, Andreas
name: Sauerwald, Jan
name: Ianigro, Jean-Christophe
name: Marteau, Jacques
Publisher: name: arXiv
Year: 2023
Subjects: subject: Geophysics (physics.geo-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The blast furnace (BF) is the fundamental tool used in the iron manufacture. Due to the difficulty of accessing direct measurements of the inner phenomena, we determined the density distribution of its internal volume in order to improve its productivity using muography. This is an imaging technique based on the differential absorption of a flux of incident particles, muons, by the target under study, similar to clinical X-ray imaging. Muons are elementary particles that have the property of passing through dense materials, up to hundreds of meters away. Their relative absorption and deviation allows the generation of density distribution images of an object by tracking the number of muons received by a detector, before and after passing through a structure. The incident direction of the detected muons is reconstructed by means of a detector composed of 3 scintillator panels that we moved on 3 positions around the BF. With this technique, we obtained the first 3D image of the internal structure of a BF using a Markov Chain Monte Carlo (MCMC) inverse problem solving algorithm on muon flux data. We were also able to perform a density monitoring of the BF and some of its operating parameters. We distinguished the position and shape of the cohesive zone, a key element in the productivity of a furnace, validating this innovative measurement concept in the application to a BF and opening the field to a series of future experiments to gain both spatial and temporal resolution.
Schur covers of skew braces
Creators: name: Letourmy, T.
name: Vendramin, L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Group Theory (math.GR)
subject: K-Theory and Homology (math.KT)
subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16T25, 81R50

description: We develop the theory of Schur covers of finite skew braces. We prove the existence of at least one Schur cover. We also compute several examples. We prove that different Schur covers are isoclinic. Finally, we prove that Schur covers have the lifting property concerning projective representations of skew braces.
description: 34 pages. Postprint version
Elevation Estimation-Driven Building 3D Reconstruction from Single-View Remote Sensing Imagery
Creators: name: Mao, Yongqiang
name: Chen, Kaiqiang
name: Zhao, Liangjin
name: Chen, Wei
name: Tang, Deke
name: Liu, Wenjie
name: Wang, Zhirui
name: Diao, Wenhui
name: Sun, Xian
name: Fu, Kun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Building 3D reconstruction from remote sensing images has a wide range of applications in smart cities, photogrammetry and other fields. Methods for automatic 3D urban building modeling typically employ multi-view images as input to algorithms to recover point clouds and 3D models of buildings. However, such models rely heavily on multi-view images of buildings, which are time-intensive and limit the applicability and practicality of the models. To solve these issues, we focus on designing an efficient DSM estimation-driven reconstruction framework (Building3D), which aims to reconstruct 3D building models from the input single-view remote sensing image. First, we propose a Semantic Flow Field-guided DSM Estimation (SFFDE) network, which utilizes the proposed concept of elevation semantic flow to achieve the registration of local and global features. Specifically, in order to make the network semantics globally aware, we propose an Elevation Semantic Globalization (ESG) module to realize the semantic globalization of instances. Further, in order to alleviate the semantic span of global features and original local features, we propose a Local-to-Global Elevation Semantic Registration (L2G-ESR) module based on elevation semantic flow. Our Building3D is rooted in the SFFDE network for building elevation prediction, synchronized with a building extraction network for building masks, and then sequentially performs point cloud reconstruction, surface reconstruction (or CityGML model reconstruction). On this basis, our Building3D can optionally generate CityGML models or surface mesh models of the buildings. Extensive experiments on ISPRS Vaihingen and DFC2019 datasets on the DSM estimation task show that our SFFDE significantly improves upon state-of-the-arts. Furthermore, our Building3D achieves impressive results in the 3D point cloud and 3D model reconstruction process.
Kinetic equilibrium of two-dimensional force-free current sheets
Creators: name: An, Xin
name: Artemyev, Anton
name: Angelopoulos, Vassilis
name: Runov, Andrei
name: Kamaletdinov, Sergey
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Force-free current sheets are local plasma structures with field-aligned electric currents and approximately uniform plasma pressures. Such structures, widely found throughout the heliosphere, are sites for plasma instabilities and magnetic reconnection, the growth rate of which is controlled by the structure's current sheet configuration. Despite the fact that many kinetic equilibrium models have been developed for one-dimensional (1D) force-free current sheets, their two-dimensional (2D) counterparts, which have a magnetic field component normal to the current sheets, have not received sufficient attention to date. Here, using particle-in-cell simulations, we search for such 2D force-free current sheets through relaxation from an initial, magnetohydrodynamic equilibrium. Kinetic equilibria are established toward the end of our simulations, thus demonstrating the existence of kinetic force-free current sheets. Although the system currents in the late equilibrium state remain field aligned as in the initial configuration, the velocity distribution functions of both ions and electrons systematically evolve from their initial drifting Maxwellians to their final time-stationary Vlasov state. The existence of 2D force-free current sheets at kinetic equilibrium necessitates future work in discovering additional integrals of motion of the system, constructing the kinetic distribution functions, and eventually investigating their stability properties.
description: Published in ApJ, 20 pages with 14 figures
Localization in interacting fermionic chains with quasi-random disorder
Creators: name: Mastropietro, Vieri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a system of fermions with a quasi-random almost-Mathieu disorder interacting through a many-body short range potential. We establish exponential decay of the zero temperature correlations, indicating localization of the interacting ground state, for weak hopping and interaction and almost everywhere in the frequency and phase; this extends the analysis in \cite{M} to chemical potentials outside spectral gaps. The proof is based on Renormalization Group and is inspired by techniques developed to deal with KAM Lindstedt series.
description: 34 pages, 11 figures
Geppella Borgesen 1940
Creators: name: Mora-Valdés, Laura Areli
name: Riosmena-Rodríguez, Rafael
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Chlorophyta
Ulvophyceae
Bryopsidales
Rhipiliaceae
Geppella

description: Geppella Børgesen (1940: 55)
 Geppella decussata E.Y. Dawson (1959: 14, 16).
 TAXONOMIC STATUS: According to Pedroche et al. (2005) and Guiry & Guiry (2014) the name G. decussata is currently valid; however no one has recently reviewed the taxonomic status based on modern collections.
RECORDS IN THE GULF OF CALIFORNIA: ND (Anderson 1991: 8, González-González 1996: 137), Isla San Francisco (Dawson 1961: 381), Southern Gulf (Norris 2010: 94).
description: Published as part of Mora-Valdés, Laura Areli & Riosmena-Rodríguez, Rafael, 2016, Checklist of the green (Ulvophyceae) macroalgae from the Gulf of California, México, pp. 203-247 in Phytotaxa 246 (4) on pages 213-214, DOI: 10.11646/phytotaxa.246.4.1, http://zenodo.org/record/13678608