cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
XMMSL1 J074008.2-853927: a tidal disruption event with thermal and non-thermal components
Creators: name: Saxton, R. D.
name: Read, A. M.
name: Komossa, S.
name: Lira, P.
name: Alexander, K. D.
name: Wieringa, M. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study X-ray bright tidal disruption events (TDE), close to the peak of their emission, with the intention of understanding the evolution of their light curves and spectra. Candidate TDE are identified by searching for soft X-ray flares from non-active galaxies in recent XMM-Newton slew data. In April 2014, X-ray emission was detected from the galaxy XMMSL1 J074008.2-853927 (a.k.a. 2MASX 07400785-8539307), a factor 20 times higher than an upper limit from 20 years earlier. Both the X-ray and UV flux subsequently fell, by factors of 70 and 12 respectively. The bolometric luminosity peaked at Lbol~2E44 ergs/s with a spectrum that may be modelled with thermal emission in the UV band, a power-law with slope~2 dominating in the X-ray band above 2 keV and a soft X-ray excess with an effective temperature of ~86 eV. Rapid variability locates the X-ray emission to within <73 Rg of the nuclear black hole. Radio emission of flux density ~1 mJy, peaking at 1.5 GHz was detected 21 months after discovery. Optical spectra indicate that the galaxy, at a distance of 73 Mpc (z=0.0173), underwent a starburst 2 Gyr ago and is now quiescent. We consider a tidal disruption event to be the most likely cause of the flare. If this proves to be correct then this is a very clean example of a disruption exhibiting both thermal and non-thermal radiation.
description: A&A accepted, 11 pages, 10 figures
Magnetic field effects in a correlated electron system with spin-state degree of freedom - Implication of an excitonic insulator -
Creators: name: Tatsuno, Taro
name: Mizoguchi, Eriko
name: Nasu, Joji
name: Naka, Makoto
name: Ishihara, Sumio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic field (H) effects on a correlated electron system with the spin-state degree of freedom are examined. The effective Hamiltonian derived from the two-orbital Hubbard model is analyzed by the mean-field approximation. Applying H to the low-spin (LS) phase induces the excitonic insulating phase, as well as the spin-state ordered phase where the LS and high-spin (HS) states are ordered alternately. In the case where H is applied to the HS phase, a reentrant transition for the HS phase appears. A rich variety of the phase diagrams are attributed to the spin-state degree of freedom and their combinations in the wave function as well as in the real-space configuration.
A cultura digital no magistério do Papa Francisco
Creators: name: Domingues, Filipe
Publisher: name: Ephata
Year: 2023

description: Esta contribuição analisa o tema da cultura digital no magistério do Papa Francisco. A comunicação humana é um ponto central para ele, que questiona com insistência se a cultura digital e os avanços tecnológicos promovem realmente uma comunicação humana verdadeira – a cultura do encontro – ou se são apenas novos obstáculos para alcançá-la. Embora o digital não seja um dos temas mais fortes de seu magistério, como são outras questões sociais, seus elementos aparecem em diversas ocasiões. Articula-se, aqui, o pensamento de Francisco dentro do contexto social e acadêmico sobre a cultura digital, com elementos da Doutrina Social da Igreja, e ilustra-se a evolução do tema neste pontificado. Argumenta-se que a visão de Francisco sobre a cultura digital está diretamente relacionada à sua crítica ao paradigma tecnocrático.
description: Ephata, Vol 5 No 1 (2023): Ecologias Digitais
Quark-hadron duality: pinched kernel approch
Creators: name: Dominguez, C. A.
name: Hernandez, L. A.
name: Schilcher, K.
name: Spiesberger, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Hadronic spectral functions measured by the ALEPH collaboration in the vector and axial-vector channels are used to study potential quark-hadron duality violations (DV). This is done entirely in the framework of pinched kernel finite energy sum rules (FESR), i.e. in a model independent fashion. The kinematical range of the ALEPH data is effectively extended up to $s = 10\; {\mbox{GeV}^2}$ by using an appropriate kernel, and assuming that in this region the spectral functions are given by perturbative QCD. Support for this assumption is obtained by using $e^+ e^-$ annihilation data in the vector channel. Results in both channels show a good saturation of the pinched FESR, without further need of explicit models of DV.
description: Invited talk given by K. Schilcher at the International Workshop on Determination of the Fundamental Parameters in QCD. Mainz Institute of Theoretical Physics, Johannes Gutenberg University of Mainz, Mainz, Germany
Late veneer and late accretion to the terrestrial planets
Creators: name: Brasser, R.
name: Mojzsis, S. J.
name: Werner, S. C.
name: Matsumura, S.
name: Ida, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: It is generally accepted that silicate-metal (`rocky') planet formation relies on coagulation from a mixture of sub-Mars sized planetary embryos and (smaller) planetesimals that dynamically emerge from the evolving circum-solar disc in the first few million years of our Solar System. Once the planets have, for the most part, assembled after a giant impact phase, they continue to be bombarded by a multitude of planetesimals left over from accretion. Here we place limits on the mass and evolution of these planetesimals based on constraints from the highly siderophile element (HSE) budget of the Moon. Outcomes from a combination of N-body and Monte Carlo simulations of planet formation lead us to four key conclusions about the nature of this early epoch. First, matching the terrestrial to lunar HSE ratio requires either that the late veneer on Earth consisted of a single lunar-size impactor striking the Earth before 4.45 Ga, or that it originated from the impact that created the Moon. An added complication is that analysis of lunar samples indicates the Moon does not preserve convincing evidence for a late veneer like Earth. Second, the expected chondritic veneer component on Mars is 0.06 weight percent. Third, the flux of terrestrial impactors must have been low ( <=10^(-6) M_earth/Myr) to avoid wholesale melting of Earth's crust after 4.4~Ga, and to simultaneously match the number of observed lunar basins. This conclusion leads to an Hadean eon which is more clement than assumed previously. Last, after the terrestrial planets had fully formed, the mass in remnant planetesimals was ~10^(-3) M_earth, lower by at least an order of magnitude than most previous models suggest. Our dynamically and geochemically self-consistent scenario requires that future N-body simulations of rocky planet formation either directly incorporate collisional grinding or rely on pebble accretion.
description: Accepted for publication in Earth and Planetary Science Letters
L’universo dell’umano digitale. Annuncio apofatico ed epifania del kerygma
Creators: name: Predoti, Rocco
Publisher: name: Ephata
Year: 2023

description: Este artigo aborda a atualidade da questão digital a partir de uma perspectiva humana. É nessa perspectiva que se situa o anúncio do Evangelho no mundo digital. O cerne do artigo é a visão do digital não como um instrumento de anúncio, mas como um lugar de encontro com o ser humano contemporâneo. Também o atual magistério pontifício, várias vezes, orienta a sua atenção para a centralidade do homem na rede digital. O anúncio do Evangelho dirige-se ao ser humano que vive no mundo digital e também se estrutura a partir dele, pelo que é necessário conhecer a sua identidade digital, a sua estrutura e a cultura que o determina. Anunciar no mundo digital é conhecer pessoas que vivem nele e tal anúncio parte necessariamente dos relacionamentos.
description: Ephata, Vol 5 No 1 (2023): Ecologias Digitais
Improving the performance of fermionic neural networks with the Slater exponential Ansatz
Creators: name: Bokhan, Denis
name: Boev, Aleksey S.
name: Fedorov, Aleksey K.
name: Trubnikov, Dmitrii N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this work, we propose a technique for the use of fermionic neural networks (FermiNets) with the Slater exponential Ansatz for electron-nuclear and electron-electron distances, which provides faster convergence of target ground-state energies due to a better description of the interparticle interaction in the vicinities of the coalescence points. Analysis of learning curves indicates on the possibility to obtain accurate energies with smaller batch sizes using arguments of the bagging approach. In order to obtain even more accurate results for the ground-state energies, we suggest an extrapolation scheme, which estimates Monte Carlo integrals in the limit of an infinite number of points. Numerical tests for a set of molecules demonstrate a good agreement with the results of original FermiNets (achieved with larger batch sizes than required by our approach) and with results of coupled-cluster singles and doubles with perturbative triples (CCSD(T)) method, calculated in the complete basis set (CBS) limit.
description: 11 pages, 2 figures, 1 table
Observation of individual tracer atoms in an ultracold dilute gas
Creators: name: Hohmann, Michael
name: Kindermann, Farina
name: Lausch, Tobias
name: Mayer, Daniel
name: Schmidt, Felix
name: Lutz, Eric
name: Widera, Artur
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Understanding the motion of a tracer particle in a rarefied gas is of fundamental and practical importance. We report the experimental investigation of individual Cs atoms impinging on a dilute cloud of ultracold Rb atoms with variable density. We study the nonequilibrium relaxation of the initial nonthermal state and detect the effect of single collisions which has eluded observation so far. We show that after few collisions, the measured spatial distribution of the light tracer atoms is correctly described by a generalized Langevin equation with a velocity-dependent friction coefficient, over a large range of Knudsen numbers.
Additional file 1 of Intestine and spleen microbiota composition in healthy and diseased tilapia
Creators: name: Ofek, Tamir
name: Lalzar, Maya
name: Izhaki, Ido
name: Halpern, Malka
Publisher: name: figshare
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Supplementary Tables and Figures. Table S1. Description of fish general health conditions. Table S2. Sampling and weight details of the healthy and diseased hybrid tilapia that were included in the current study. Table S3. Sample index fish ID, organ, and health condition. Table S4. Diseased fish samples that showed the most and least relative abundance of Vibrio (total Vibrio reads/total reads) and alpha diversity values. Figure S1. Maps describing the sampling area. Fig. S2. Rarefaction curves representing the observed number of amplicon sequence variants (ASVs) per sample.
Anatomy of the fragmented Hilbert space: eigenvalue tunneling, quantum scars and localization in the perturbed random regular graph
Creators: name: Kochergin, Daniil
name: Khaymovich, Ivan M.
name: Valba, Olga
name: Gorsky, Alexander
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the properties of the random regular graph with node degree $d$ perturbed by chemical potentials $μ_k$ for a number of short $k$-cycles. We analyze both numerically and analytically the phase diagram of the model in the $(μ_k,d)$ plane. The critical curve separating the homogeneous and clusterized phases is found and it is demonstrated that the clusterized phase itself generically is separated as the function of $d$ into the phase with ideal clusters and phase with coupled ones when the continuous spectrum gets formed. The eigenstate spatial structure of the model is investigated and it is found that there are localized scar-like states in the delocalized part of the spectrum, that are related to the topologically equivalent nodes in the graph. We also reconsider the localization of the states in the non-perturbative band formed by eigenvalue instantons and find the semi-Poisson level spacing distribution. The Anderson transition for the case of combined ($k$-cycle) structural and diagonal (Anderson) disorders is investigated. It is found that the critical diagonal disorder gets reduced sharply at the clusterization phase transition, but does it unevenly in non-perturbative and mid-spectrum bands, due to the scars, present in the latter. The applications of our findings to $2$d quantum gravity are discussed.
description: 27 pages, 9 figures, 87 references + 4 pages, 4 figures in Appendices
Friendship as a Theological Category
Creators: name: Aviz, Darlan Aurélio De
Publisher: name: Ephata
Year: 2023

description: A amizade é um fenómeno universal e próprio da condição humana que nasce da livre oferta de si mesmo para lançar-se ao mistério do outro. Por meio dela, os homens tornam-se capazes de encontrar um caminho para sua humanização. Este artigo retrata o papel da amizade, sobretudo na era digital, e os caminhos que o cristão deve percorrer para alcançar sua identidade neste relevante meio de comunicação, que ultrapassa a distância para permitir o encontro. Porém, esta tecnologia jamais determina uma sociedade, é ela que faz suas escolhas.
description: Ephata, Vol 5 No 1 (2023): Ecologias Digitais
Editorial
Creators: name: Figueiredo Rodrigues, Luís Miguel
Publisher: name: Ephata
Year: 2023

description: Falar de «ecologia dos média» é recordar a de Marshall McLuhan e Neil Postman, entre outros, como os fundadores deste conceito. Quando, em 2000, Neil Postman proferiu a conferência com que inaugurou a convenção da Media Ecology Association, pôde explicar o significado da expressão «media ecology» para, depois, lançar aquelas perguntas que ele considera serem fundamentais, para que os média digitais estejam, de facto, ao serviço do ser humano, potenciando uma cada vez maior humanização da humanidade. De modo sintético, as questões centram- -se em torno de quatro eixos: perceber se os novos média potenciam o pensamento racional; em que medida contribuem para o desenvolvi[1]mento de processos democráticos; se oferecem, ou não, um maior acesso a informação significativa; e, por fim, se potenciam o aumento de uma consciência ética que promova uma maior bondade entre os humanos.
description: Ephata, Vol 5 No 1 (2023): Ecologias Digitais
Excitons and optical spectra of phosphorene nanoribbons
Creators: name: Nourbakhsh, Zahra
name: Asgari, Reza
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: On the basis of many-body {\it ab-initio} calculations, using single-shot G$_0$W$_0$ method and Bethe-Salpeter equation, we study phosphorene nanoribbons (PNRs) in the two typical zigzag and armchair directions. The electronic structure, optical absorption, electron-hole (exciton) binding energy, exciton exchange splitting, and exciton wave functions are calculated for different size of PNRs. The typically strong splitting between singlet and triplet excitonic states make PNRs favorable systems for application in optoelectronic. Quantum confinement occurs in both kinds of PNRs, and it is stronger in the zPNRs, as behave like quasi-zero-dimensional systems. Scaling laws are investigated for the size-dependent behaviors of PNRs. The first bright excitonic state in PNRs is explored in detail.
description: 9 pages, 11 figures
Signatures-and-sensitivity-based multi-criteria variational calibration for distributed hydrological modeling applied to Mediterranean floods
Creators: name: Huynh, Ngo Nghi Truyen
name: Garambois, Pierre-André
name: Colleoni, François
name: Javelle, Pierre
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Classical calibration methods in hydrology typically rely on a single cost function computed on long-term streamflow series. Even when hydrological models achieve acceptable scores in NSE and KGE, imbalances can still arise between overall model performance and its ability to simulate flood events, particularly flash floods. In this study, the potential of using multi-scale signatures is explored to enhance multi-criteria calibration methods for spatially distributed flood modeling, which remains considerable challenges. We present a novel signatures and sensitivity-based calibration approach implemented into a variational data assimilation algorithm capable to deal with high dimensional spatially distributed hydrological optimization problems. It is tested on 141 flash flood prone catchments mostly located in the French Mediterranean region. Our approach involves computing several signatures, including flood event signatures, using an automated flood segmentation algorithm. We select suitable signatures for constraining the model based on their global sensitivity with the input parameters through global signature-based sensitivity analysis (GSSA). We then perform two multi-criteria calibration strategies using the selected signatures, including a single-objective optimization approach, which transforms the multi-criteria problem into a single-objective function, and a multi-objective optimization approach, which uses a simple additive weighting method to select an optimal solution from the Pareto set. Our results show significant improvements in both calibration and temporal validation metrics, especially for flood signatures, demonstrating the robustness and delicacy of our signatures-based calibration framework for enhancing flash flood forecasting systems.
Relative Entropy via Distribution of Observables
Creators: name: Androulakis, George
name: John, Tiju Cherian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81P17, 81P99

description: We obtain formulas for Petz-Rényi and Umegaki relative entropy from the idea of distribution of a positive selfadjoint operator. Classical results on Rényi and Kullback-Leibler divergences are applied to obtain new results and new proofs for some known results about Petz-Rényi and Umegaki relative entropy. Most important among these, is a necessary and sufficient condition for the finiteness of the Petz-Rényi $α$-relative entropy. All of the results presented here are valid in both finite and infinite dimensions. In particular, these results are valid for states in Fock spaces and thus are applicable to continuous variable quantum information theory.
description: Previous version has been divided into two different articles. The first one in this series is `Quantum f-divergences via Nussbaum-Szko{\l}a Distributions and Applications to f-divergence Inequalities' accepted for publication at Rev. Math. Phys. (DOI: https://doi.org/10.1142/S0129055X23600024). The present article is accepted for publication at Infin. Dimens. Anal. Quantum Probab. Relat. Top
Lepton flavor violation in an extended MSSM
Creators: name: Espinosa-Castañeda, R.
name: Flores-Baez, F. V.
name: Gómez-Bock, M.
name: Mondragón, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we explore a lepton flavor violation effect induced at one loop for a flavor structure in an extended minimal standard supersymmetric model, considering an ansatz for the trilinear term. In particular we find a finite expression which will show the impact of this phenomena in the $h\to μτ$ decay, produced by a mixing in the trilinear coupling of the soft supersymmetric Lagrangian.
description: 8 pages, 1 figure, To be published in Journal of Physics Conference Series (IOP). Joint Proceedings of the XV Mexican Workshop on Particles and Fields & the XXX Annual Meeting of the Division of Particles and Fields of the Mexican Physical Society
Proximity effect of time-reversal symmetry broken non-centrosymmetric superconductors
Creators: name: Kokkeler, Tim
name: Golubov, Alexander
name: Bergeret, Sebastián
name: Tanaka, Yukio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In non-centrosymmetric superconductors the pair potential has both even-parity singlet and odd-parity triplet components. If time-reversal symmetry is broken, the superconducting phase of these components is not the same, for example in anapole superconductors. In this paper it is shown that breaking time-reversal symmetry by a phase difference between the two components significantly alters both the density of states and the conductance in s+helical p-wave superconductors. The density of states and conductance in s+chiral p-wave superconductors are less influenced by adding a phase difference because time reversal symmetry is already broken in the s+p-wave superconductor. The Tanaka-Nazarov boundary conditions are extended to 3D superconductors, allowing to investigate a greater variety of superconductors, such as B-W superconductors, in which the direction of the d-vector is parallel to the direction of momentum. The results are important for the determination of pair potentials in potentially time-reversal symmetry broken non-centrosymmetric superconductors.
description: 13 pages, 18 figures
A self-gravity module for the PLUTO code
Creators: name: Mandal, Ankush
name: Mukherjee, Dipanjan
name: Mignone, Andrea
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a novel implementation of an iterative solver for the solution of the Poisson equation in the PLUTO code for astrophysical fluid dynamics. Our solver relies on a relaxation method in which convergence is sought as the steady-state solution of a parabolic equation, whose time-discretization is governed by the \textit{Runge-Kutta-Legendre} (RKL) method. Our findings indicate that the RKL-based Poisson solver, which is both fully parallel and rapidly convergent, has the potential to serve as a practical alternative to conventional iterative solvers such as the \textit{Gauss-Seidel} (GS) and \textit{successive over-relaxation} (SOR) methods. Additionally, it can mitigate some of the drawbacks of these traditional techniques. We incorporate our algorithm into a multigrid solver to provide a simple and efficient gravity solver that can be used to obtain the gravitational potentials in self-gravitational hydrodynamics. We test our implementation against a broad range of standard self-gravitating astrophysical problems designed to examine different aspects of the code. We demonstrate that the results match excellently with the analytical predictions (when available), and the findings of similar previous studies.
description: Published in ApJS
Landauer Bound for Analog Computing Systems
Creators: name: Diamantini, M. Cristina
name: Gammaitoni, Luca
name: Trugenberger, Carlo A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: By establishing a relation between information erasure and continuous phase transitions we generalise the Landauer bound to analog computing systems. The entropy production per degree of freedom during erasure of an analog variable (reset to standard value) is given by the logarithm of the configurational volume measured in units of its minimal quantum. As a consequence every computation has to be carried on with a finite number of bits and infinite precision is forbidden by the fundamental laws of physics, since it would require an infinite amount of energy.
description: 5 pages, no figures, to appear in Phys. Rev. E
Decoding Neutron Star Observations: Revealing Composition through Bayesian Neural Networks
Creators: name: Carvalho, Valéria
name: Ferreira, Márcio
name: Malik, Tuhin
name: Providência, Constança
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We exploit the great potential offered by Bayesian Neural Networks (BNNs) to directly decipher the internal composition of neutron stars (NSs) based on their macroscopic properties. By analyzing a set of simulated observations, namely NS radius and tidal deformability, we leverage BNNs as effective tools for inferring the proton fraction and sound speed within NS interiors. To achieve this, several BNNs models were developed upon a dataset of $\sim$ 25K nuclear EoS within a relativistic mean-field framework, obtained through Bayesian inference that adheres to minimal low-density constraints. Unlike conventional neural networks, BNNs possess an exceptional quality: they provide a prediction uncertainty measure. To simulate the inherent imperfections present in real-world observations, we have generated four distinct training and testing datasets that replicate specific observational uncertainties. Our initial results demonstrate that BNNs successfully recover the composition with reasonable levels of uncertainty. Furthermore, using mock data prepared with the DD2, a different class of relativistic mean-field model utilized during training, the BNN model effectively retrieves the proton fraction and speed of sound for neutron star matter.
description: 16 pages, 15 figures, published version
All-optical mode conversion via spatially-multimode four-wave mixing
Creators: name: Danaci, Onur
name: Rios, Christian
name: Glasser, Ryan T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally demonstrate the conversion of a Gaussian beam to an approximate Bessel-Gauss mode by making use of a non-collinear four-wave mixing process in hot atomic vapor. The presence of a strong, spatially non-Gaussian pump both converts the probe beam into a non-Gaussian mode, and generates a conjugate beam that is in a similar non-Gaussian mode. The resulting probe and conjugate modes are compared to the output of a Gaussian beam incident on an annular aperture that is then spatially filtered according to the phase-matching conditions imposed by the four-wave mixing process. We find that the resulting experimental data agrees well with both numerical simulations, as well as analytical formulae describing the effects of annular apertures on Gaussian modes. These results show that spatially-multimode gain platforms may be used as a new method of mode conversion.
description: 13 pages, 6 figures
Fiber ring resonator with nanofiber section for chiral cavity quantum electrodynamics and multimode strong coupling
Creators: name: Schneeweiss, Philipp
name: Zeiger, Sophie
name: Hoinkes, Thomas
name: Rauschenbeutel, Arno
name: Volz, Jürgen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally realize an optical fiber ring resonator that includes a tapered section with subwavelength-diameter waist. In this section, the guided light exhibits a significant evanescent field which allows for efficient interfacing with optical emitters. A commercial tunable fiber beam splitter provides simple and robust coupling to the resonator. Key parameters of the resonator such as its out-coupling rate, free spectral range, and birefringence can be adjusted. Thanks to the low taper- and coupling-losses, the resonator exhibits an unloaded finesse of F=75+/-1, sufficient for reaching the regime of strong coupling for emitters placed in the evanescent field. The system is ideally suited for trapping ensembles of laser-cooled atoms along the nanofiber section. Based on measured parameters, we estimate that the system can serve as a platform for optical multimode strong coupling experiments. Finally, we discuss the possibilities of using the resonator for applications based on chiral quantum optics.
Diff-TTSG: Denoising probabilistic integrated speech and gesture synthesis
Creators: name: Mehta, Shivam
name: Wang, Siyang
name: Alexanderson, Simon
name: Beskow, Jonas
name: Székely, Éva
name: Henter, Gustav Eje
Publisher: name: arXiv
Year: 2023
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: I.2.7; I.2.6; G.3; H.5.5
subject: 68T07 (Primary), 68T42 (Secondary)

description: With read-aloud speech synthesis achieving high naturalness scores, there is a growing research interest in synthesising spontaneous speech. However, human spontaneous face-to-face conversation has both spoken and non-verbal aspects (here, co-speech gestures). Only recently has research begun to explore the benefits of jointly synthesising these two modalities in a single system. The previous state of the art used non-probabilistic methods, which fail to capture the variability of human speech and motion, and risk producing oversmoothing artefacts and sub-optimal synthesis quality. We present the first diffusion-based probabilistic model, called Diff-TTSG, that jointly learns to synthesise speech and gestures together. Our method can be trained on small datasets from scratch. Furthermore, we describe a set of careful uni- and multi-modal subjective tests for evaluating integrated speech and gesture synthesis systems, and use them to validate our proposed approach. Please see https://shivammehta25.github.io/Diff-TTSG/ for video examples, data, and code.
description: 7 pages, 2 figures, presented at the ISCA Speech Synthesis Workshop (SSW) 2023
Additional file 1 of The disruption of the CCDC6 – PP4 axis induces a BRCAness like phenotype and sensitivity to PARP inhibitors in high-grade serous ovarian carcinoma
Creators: name: Morra, Francesco
name: Merolla, Francesco
name: Damia, Giovanna
name: Ricci, Francesca
name: Varricchio, Silvia
name: Ilardi, Gennaro
name: Arenare, Laura
name: Califano, Daniela
name: Napolitano, Virginia
name: Fruscio, Robert
name: Melillo, Rosa Marina
name: Palazzo, Luca
name: Celetti, Angela
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology

description: Additional file 1: Table S1. Genetic characteristics of the HGSOC cells.
Regulation of Irregular Neuronal Firing by Autaptic Transmission
Creators: name: Guo, Daqing
name: Wu, Shengdun
name: Chen, Mingming
name: Perc, Matjaz
name: Zhang, Yangsong
name: Ma, Jingling
name: Cui, Yan
name: Xu, Peng
name: Xia, Yang
name: Yao, Dezhong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The importance of self-feedback autaptic transmission in modulating spike-time irregularity is still poorly understood. By using a biophysical model that incorporates autaptic coupling, we here show that self-innervation of neurons participates in the modulation of irregular neuronal firing, primarily by regulating the occurrence frequency of burst firing. In particular, we find that both excitatory and electrical autapses increase the occurrence of burst firing, thus reducing neuronal firing regularity. In contrast, inhibitory autapses suppress burst firing and therefore tend to improve the regularity of neuronal firing. Importantly, we show that these findings are independent of the firing properties of individual neurons, and as such can be observed for neurons operating in different modes. Our results provide an insightful mechanistic understanding of how different types of autapses shape irregular firing at the single-neuron level, and they highlight the functional importance of autaptic self-innervation in taming and modulating neurodynamics.
description: 27 pages, 8 figures
Dualities and endomorphisms of pseudo-cones
Creators: name: Xu, Yun
name: Li, Jin
name: Leng, Gangsong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Metric Geometry (math.MG)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 52A20, 52C07, 06B05, 06A99

description: In this paper we study a class of convex sets which are called closed pseudo-cones and study a new duality of this class. It turns out that the duality characterizes closed pseudo-cones and is essentially the only possible abstract duality of them.The characterization of the duality is corresponding to the classification of endomorphisms closed pseudo-cones.
description: 26 pages
Cabreros de Anta, Marcelino, Vigência y estado actual de la legislación Canónica. Ed. EUNSA. Vol. de 74 ps. 145x215. Pamplona 1974
Creators: name: Marques, António
Publisher: name: Theologica
Year: 1976

description: Theologica, Vol 11 No 1-2 (1976)
Circumplanetary disks around young giant planets: a comparison between core-accretion and disk instability
Creators: name: Szulágyi, J.
name: Mayer, L.
name: Quinn, T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Circumplanetary disks can be found around forming giant planets, regardless of whether core accretion or gravitational instability built the planet. We carried out state-of-the-art hydrodynamical simulations of the circumplanetary disks for both formation scenarios, using as similar initial conditions as possible to unveil possible intrinsic differences in the circumplanetary disk mass and temperature between the two formation mechanisms. We found that the circumplanetary disks mass linearly scales with the circumstellar disk mass. Therefore, in an equally massive protoplanetary disk, the circumplanetary disks formed in the disk instability model can be only a factor of eight more massive than their core-accretion counterparts. On the other hand, the bulk circumplanetary disk temperature differs by more than an order of magnitude between the two cases. The subdisks around planets formed by gravitational instability have a characteristic temperature below 100 K, while the core accretion circumplanetary disks are hot, with temperatures even greater than 1000 K when embedded in massive, optically thick protoplanetary disks. We explain how this difference can be understood as the natural result of the different formation mechanisms. We argue that the different temperatures should persist up to the point when a full-fledged gas giant forms via disk instability, hence our result provides a convenient criteria for observations to distinguish between the two main formation scenarios by measuring the bulk temperature in the planet vicinity.
description: 12 pages, 9 figures, 1 table, accepted for publication at MNRAS
Damboriena, Prudencio, La Salvación en las Religiones no Cristianas. Edit. Católica, S. A. Col. BAC, n. 343. Vol. de 550 ps. 125x200. Madrid 1963
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1976

description: Theologica, Vol 11 No 1-2 (1976)
NeuralReshaper: Single-image Human-body Retouching with Deep Neural Networks
Creators: name: Chen, Beijia
name: Shen, Yuefan
name: Fu, Hongbo
name: Chen, Xiang
name: Zhou, Kun
name: Zheng, Youyi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: In this paper, we present NeuralReshaper, a novel method for semantic reshaping of human bodies in single images using deep generative networks. To achieve globally coherent reshaping effects, our approach follows a fit-then-reshape pipeline, which first fits a parametric 3D human model to a source human image and then reshapes the fitted 3D model with respect to user-specified semantic attributes. Previous methods rely on image warping to transfer 3D reshaping effects to the entire image domain and thus often cause distortions in both foreground and background. In contrast, we resort to generative adversarial nets conditioned on the source image and a 2D warping field induced by the reshaped 3D model, to achieve more realistic reshaping results. Specifically, we separately encode the foreground and background information in the source image using a two-headed UNet-like generator, and guide the information flow from the foreground branch to the background branch via feature space warping. Furthermore, to deal with the lack-of-data problem that no paired data exist (i.e., the same human bodies in varying shapes), we introduce a novel self-supervised strategy to train our network. Unlike previous methods that often require manual efforts to correct undesirable artifacts caused by incorrect body-to-image fitting, our method is fully automatic. Extensive experiments on both indoor and outdoor datasets demonstrate the superiority of our method over previous approaches.
Geraldes Freire, José. Commonitiones Sanctorum Patrum. Uma nova colecção de apotegmas. Ed. Centro de Estudos clássicos e humanísticos. Vol. de 432 ps. 160x225. Coimbra 1974
Creators: name: Correia, Francisco Carvalho
Publisher: name: Theologica
Year: 1976

description: Theologica, Vol 11 No 1-2 (1976)
Alcain, José António, Cautivario y Redención del Hombre en Origenes. Ed. Mensagero. Vol. de 328 ps. 154x223. Bilbao 1973
Creators: name: Faria, Manuel Ferreira De
Publisher: name: Theologica
Year: 1976

description: Theologica, Vol 11 No 1-2 (1976)
Prospects for detecting the Rossiter-McLaughlin effect of Earth-like planets: the test case of TRAPPIST-1b and c
Creators: name: Cloutier, Ryan
name: Triaud, Amaury H. M. J
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Rossiter-McLaughlin effect is the principal method of determining the sky-projected spin--orbit angle ($β$) of transiting planets. Taking the example of the recently discovered TRAPPIST-1 system, we explore how ultracool dwarfs facilitate the measurement of the spin--orbit angle for Earth-sized planets by creating an effect that can be an order of magnitude more ample than the Doppler reflex motion caused by the planet if the star is undergoing rapid rotation. In TRAPPIST-1's case we expect the semi-amplitudes of the Rossiter-McLaughlin effect to be $40-50$ m/s for the known transiting planets. Accounting for stellar jitter expected for ultracool dwarfs, instrumental noise, and assuming radial velocity precisions both demonstrated and anticipated for upcoming near-infrared spectrographs, we quantify the observational effort required to measure the planets' masses and spin--orbit angles. We conclude that if the planetary system is well-aligned then $β$ can be measured to a precision of $\lesssim 10^{\circ}$ if the spectrograph is stable at the level of 2 m/s. We also investigate the measure of $Δβ$, the mutual inclination, when multiple transiting planets are present in the system. Lastly, we note that the rapid rotation rate of many late M-dwarfs will amplify the Rossiter-McLaughlin signal to the point where variations in the chromatic Rossiter-McLaughlin effect from atmospheric absorbers should be detectable.
description: 11 pages, 4 figures. Accepted to MNRAS. Comments welcome
Additional file 3 of The disruption of the CCDC6 – PP4 axis induces a BRCAness like phenotype and sensitivity to PARP inhibitors in high-grade serous ovarian carcinoma
Creators: name: Morra, Francesco
name: Merolla, Francesco
name: Damia, Giovanna
name: Ricci, Francesca
name: Varricchio, Silvia
name: Ilardi, Gennaro
name: Arenare, Laura
name: Califano, Daniela
name: Napolitano, Virginia
name: Fruscio, Robert
name: Melillo, Rosa Marina
name: Palazzo, Luca
name: Celetti, Angela
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology

description: Additional file 3: Table S2. H-scores of the CCDC6 immunohistochemical staining.
A splash in a one-dimensional cold gas
Creators: name: Chakraborti, Subhadip
name: Dhar, Abhishek
name: Krapivsky, P. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider a set of hard point particles distributed uniformly with a specified density on the positive half-line and all initially at rest. The particle masses alternate between two values, $m$ and $M$. The particles interact via collisions that conserve energy and momentum. We study the cascade of activity that results when the left-most particle is given a positive velocity. At long times we find that this leads to two fascinating features in the observed dynamics. First, in the bulk of the gas, a shock front develops separating the cold gas from a thermalized region. The shock-front travels sub-ballistically, with the bulk described by self-similar solutions of Euler hydrodynamics. Second, there is a splash region formed by the recoiled particles which move ballistically with negative velocities. The splash region is completely non-hydrodynamic and we propose two conjectures for the long time particle dynamics in this region. We provide a detailed analytic understanding of these coexisting regimes. These are supported by the results of molecular dynamics simulations.
Suprathermal electrons at Saturn's bow shock
Creators: name: Masters, A.
name: Sulaiman, A. H.
name: Sergis, N.
name: Stawarz, L.
name: Fujimoto, M.
name: Coates, A. J.
name: Dougherty, M. K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The leading explanation for the origin of galactic cosmic rays is particle acceleration at the shocks surrounding young supernova remnants (SNRs), although crucial aspects of the acceleration process are unclear. The similar collisionless plasma shocks frequently encountered by spacecraft in the solar wind are generally far weaker (lower Mach number) than these SNR shocks. However, the Cassini spacecraft has shown that the shock standing in the solar wind sunward of Saturn (Saturn's bow shock) can occasionally reach this high-Mach number astrophysical regime. In this regime Cassini has provided the first in situ evidence for electron acceleration under quasi-parallel upstream magnetic conditions. Here we present the full picture of suprathermal electrons at Saturn's bow shock revealed by Cassini. The downstream thermal electron distribution is resolved in all data taken by the low-energy electron detector (CAPS-ELS, <28 keV) during shock crossings, but the higher energy channels were at (or close to) background. The high-energy electron detector (MIMI-LEMMS, >18 keV) measured a suprathermal electron signature at 31 of 508 crossings, where typically only the lowest energy channels (<100 keV) were above background. We show that these results are consistent with theory in which the "injection" of thermal electrons into an acceleration process involves interaction with whistler waves at the shock front, and becomes possible for all upstream magnetic field orientations at high Mach numbers like those of the strong shocks around young SNRs. A future dedicated study will analyze the rare crossings with evidence for relativistic electrons (up to ~1 MeV).
description: 22 pages, 5 figures. Accepted for publication in ApJ
Additional file 4 of The disruption of the CCDC6 – PP4 axis induces a BRCAness like phenotype and sensitivity to PARP inhibitors in high-grade serous ovarian carcinoma
Creators: name: Morra, Francesco
name: Merolla, Francesco
name: Damia, Giovanna
name: Ricci, Francesca
name: Varricchio, Silvia
name: Ilardi, Gennaro
name: Arenare, Laura
name: Califano, Daniela
name: Napolitano, Virginia
name: Fruscio, Robert
name: Melillo, Rosa Marina
name: Palazzo, Luca
name: Celetti, Angela
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology

description: Additional file 4: Table S3. Study population of ovarian cancers tested for CCDC6 protein expression.
Applications of the Numerov method to simple quantum systems using Python
Creators: name: Caruso, Francisco
name: Oguri, Vitor
name: Silveira, Felipe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: G.4
subject: 35-04, 65N25

description: Numerov's numerical method is developed in a didactic way by using Python in its {\it Jupyter Notebook} version 6.0.3 for three different quantum physical systems: the hydrogen atom, a molecule governed by the Morse potential and for a quantum dot. After a brief introduction to the Numerov method, the complete code to calculate the eigenfunctions and eigenvalues of the hydrogen atom is presented. The necessary code changes to calculate the other two examples are also provided in the sequel.