cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Near ultraviolet photonic integrated lasers based on silicon nitride
Creators: name: Siddharth, Anat
name: Wunderer, Thomas
name: Lihachev, Grigory
name: Voloshin, Andrey S.
name: Haller, Camille
name: Wang, Rui Ning
name: Teepe, Mark
name: Yang, Zhihong
name: Liu, Junqiu
name: Riemensberger, Johann
name: Grandjean, Nicolas
name: Johnson, Noble
name: Kippenberg, Tobias J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Low phase noise lasers based on the combination of III-V semiconductors and silicon photonics are well established in the near-infrared spectral regime. Recent advances in the development of low-loss silicon nitride-based photonic integrated resonators have allowed to outperform bulk external diode and fiber lasers in both phase noise and frequency agility in the 1550 nm-telecommunication window. Here, we demonstrate for the first time a hybrid integrated laser composed of a gallium nitride (GaN) based laser diode and a silicon nitride photonic chip-based microresonator operating at record low wavelengths as low as 410 nm in the near-ultraviolet wavelength region suitable for addressing atomic transitions of atoms and ions used in atomic clocks, quantum computing, or for underwater LiDAR. Using self-injection locking to a high Q (0.4 $\times$ 10$^6$) photonic integrated microresonator we observe a phase noise reduction of the Fabry-Pérot laser at 461 nm by a factor greater than 100$\times$, limited by the device quality factor and back-reflection.
description: 10 pages, 8 figures
Interpretable Boosted Decision Tree Analysis for the Majorana Demonstrator
Creators: name: Arnquist, I. J.
name: Avignone, F. T.
name: Barabash, A. S.
name: Barton, C. J.
name: Bhimani, K. H.
name: Blalock, E.
name: Bos, B.
name: Busch, M.
name: Buuck, M.
name: Caldwell, T. S.
name: Chan, Y -D.
name: Christofferson, C. D.
name: Chu, P. -H.
name: Clark, M. L.
name: Cuesta, C.
name: Detwiler, J. A.
name: Efremenko, Yu.
name: Elliott, S. R.
name: Giovanetti, G. K.
name: Green, M. P.
name: Gruszko, J.
name: Guinn, I. S.
name: Guiseppe, V. E.
name: Haufe, C. R.
name: Henning, R.
name: Aguilar, D. Hervas
name: Hoppe, E. W.
name: Hostiuc, A.
name: Kidd, M. F.
name: Kim, I.
name: Kouzes, R. T.
name: Lannen, T. E.
name: Li, A.
name: Lopez-Castano, J. M.
name: Martin, E. L.
name: Martin, R. D.
name: Massarczyk, R.
name: Meijer, S. J.
name: Oli, T. K.
name: Othman, G.
name: Paudel, L. S.
name: Pettus, W.
name: Poon, A. W. P.
name: Radford, D. C.
name: Reine, A. L.
name: Rielage, K.
name: Ruof, N. W.
name: Schaper, D. C.
name: Tedeschi, D.
name: Varner, R. L.
name: Vasilyev, S.
name: Wilkerson, J. F.
name: Wiseman, C.
name: Xu, W.
name: Yu, C. -H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (cs.LG)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The Majorana Demonstrator is a leading experiment searching for neutrinoless double-beta decay with high purity germanium detectors (HPGe). Machine learning provides a new way to maximize the amount of information provided by these detectors, but the data-driven nature makes it less interpretable compared to traditional analysis. An interpretability study reveals the machine's decision-making logic, allowing us to learn from the machine to feedback to the traditional analysis. In this work, we have presented the first machine learning analysis of the data from the Majorana Demonstrator; this is also the first interpretable machine learning analysis of any germanium detector experiment. Two gradient boosted decision tree models are trained to learn from the data, and a game-theory-based model interpretability study is conducted to understand the origin of the classification power. By learning from data, this analysis recognizes the correlations among reconstruction parameters to further enhance the background rejection performance. By learning from the machine, this analysis reveals the importance of new background categories to reciprocally benefit the standard Majorana analysis. This model is highly compatible with next-generation germanium detector experiments like LEGEND since it can be simultaneously trained on a large number of detectors.
description: 13 pages, 9 figures
Perturbation Theory for Second Order Elliptic Operators with BMO Antisymmetric Part
Creators: name: Dindoš, Martin
name: Sätterqvist, Erik
name: Ulmer, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J25

description: In the present paper we study perturbation theory for the $L^p$ Dirichlet problem on bounded chord arc domains for elliptic operators in divergence form with potentially unbounded antisymmetric part in BMO. Specifically, given elliptic operators $L_0 = \mbox{div}(A_0\nabla)$ and $L_1 = \mbox{div}(A_1\nabla)$ such that the $L^p$ Dirichlet problem for $L_0$ is solvable for some $p>1$; we show that if $A_0 - A_1$ satisfies certain Carleson condition, then the $ L^q$ Dirichlet problem for $L_1$ is solvable for some $q \geq p$. Moreover if the Carleson norm is small then we may take $q=p$. We use the approach first introduced in Fefferman-Kenig-Pipher '91 on the unit ball, and build on Milakis-Pipher-Toro '11 where the large norm case was shown for symmetric matrices on bounded chord arc domains. We then apply this to solve the $L^p$ Dirichlet problem on a bounded Lipschitz domain for an operator $L = \mbox{div}(A\nabla)$, where $A$ satisfies a Carleson condition similar to the one assumed in Kenig-Pipher '01 and Dindoš-Petermichl-Pipher '07 but with unbounded antisymmetric part.
description: Corrected proof of Lemma 5.1
Optimizing Hybrid Ferromagnetic Metal-Ferrimagnetic Insulator Spin-Hall Nano-Oscillators: A Micromagnetic Study
Creators: name: Xi, Robert
name: Lai, Ya-An
name: Kent, Andrew D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-Hall nano-oscillators (SHNO) are nanoscale spintronic devices that generate high-frequency (GHz) microwave signals useful for various applications such as neuromorphic computing and creating Ising systems. Recent research demonstrated that hybrid SHNOs consisting of a ferromagnetic metal (permalloy) and lithium aluminum ferrite (LAFO), a ferrimagnetic insulator, thin films have advantages in having lower auto-oscillation threshold currents ($I_{\text{th}}$) and generating larger microwave output power, making this hybrid structure an attractive candidate for spintronic applications. It is essential to understand how the tunable material properties of LAFO, e.g., its thickness, perpendicular magnetic anisotropy ($K_u$), and saturation magnetization ($M_s$), affect magnetic dynamics in hybrid SHNOs. We investigate the change in $I_{\text{th}}$ and the output power of the device as the LAFO parameters vary. We find the $I_{\text{th}}$ does not depend strongly on these parameters, but the output power has a highly nonlinear dependence on $M_s$ and $K_u$. We further investigate the nature of the excited spin-wave modes as a function of $K_u$ and determine a critical value of $K_u$ above which propagating spin-waves are excited. Our simulation results provide a roadmap for designing hybrid SHNOs to achieve targeted spin excitation characteristics.
Production of $ΩNN$ and $ΩΩN$ in ultra-relativistic heavy ion collisions
Creators: name: Zhang, Liang
name: Zhang, Song
name: Ma, Yu-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Even though lots of $Λ$-hypernuclei have been found and measured, multi-strangeness hypernuclei consisting of $Ω$ are not yet discovered. The studies of multi-strangeness hypernuclei help us further understand the interaction between hyperons and nucleons. Recently the $ΩN$ and $ΩΩ$ interactions as well as binding energies were calculated by the HAL-QCD's lattice Quantum Chromo-Dynamics (LQCD) simulations and production rates of $Ω$-dibaryon in Au + Au collisions at RHIC and Pb + Pb collisions at LHC energies were estimated by a coalescence model. The present work discusses the production of more exotic triple-baryons including $Ω$, namely $ΩNN$ and $ΩΩN$ as well as their decay channels. A variation method is used in calculations of bound states and binding energy of $ΩNN$ and $ΩΩN$ with the potentials from the HAL-QCD's results. The productions of $ΩNN$ and $ΩΩN$ are predicted by using a blast-wave model plus coalescence model in ultra-relativistic heavy-ion collisions at $\sqrt{s_{NN}} = 200$ GeV and $2.76$ TeV. Furthermore, plots for baryon number dependent yields of different baryons ($N$ and $Ω$), their dibaryons and hypernuclei are made and the production rate of a more exotic tetra-baryon ($ΩΩNN$) is extrapolated.
description: 10 pages, 5 figures, 7 tables
Tabla III. Datos de un programa de convivencia que sitúan la organización escolar como eje para una cultura de paz desde la convivencia
Creators: name: Dominguez, Jose Luis Belver
Publisher: name: figshare
Year: 2020
Subjects: Education

description: Datos de un programa de convivencia que sitúan la organización escolar como eje para una cultura de paz desde la convivencia
Chrysops (Chrysops) italicus Meigen 1804
Creators: name: Müller, Günter C.
name: Prozorov, Alexey M.
name: Traore, Mohamed M.
name: Revay, Edita E.
name: Hogsette, Jerome A.
name: Kline, Daniel
name: Chaskopoulou, Alexandra
name: Prozorova, Tatiana A.
name: Volkova, Julia S.
name: Diarra, Rabiatou A.
name: Petrányi, Gergely
name: Schneider, Tom
name: Beck, Robert H. - T.
name: Ignatev, Nikolai
name: Yakovlev, Roman V.
name: Cui, Liwang
name: Schlein, Yosef
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Chrysops
Chrysops italicus

description: 5. Chrysops (Chrysops) italicus Meigen, 1804
 Klassifikazion und Beschreibung der europäischen zweiflügligen Insekten, 1 (2), 158.
 Type locality. Italy.
 Range. Palearctic. Mediterranean, in Northern Africa from Morocco to Tunisia, through southern Europe eastwards to Turkey and Iran to the south to Cyprus and the Levant as far south as Lebanon (Leclercq, 1960; Chvála et al., 1972; Müller et al., 2012a; Chvála, 2013).
 New records. We observed this species in Cyprus for several years, attacking man, horses, and cattle in the salt marshes surrounding Limassol Salt Lake from late April to early September. We have not recorded this species so far in the hills and mountains towards the center of the island. On Lesvos, we caught three males by sweeping vegetation and two females attacking the collector in the area surrounding the salt pans of Kalloni and Polichnitos (at sea level) in late April 1999 (new record for Northern Aegean islands).
description: Published as part of Müller, Günter C., Prozorov, Alexey M., Traore, Mohamed M., Revay, Edita E., Hogsette, Jerome A., Kline, Daniel, Chaskopoulou, Alexandra, Prozorova, Tatiana A., Volkova, Julia S., Diarra, Rabiatou A., Petrányi, Gergely, Schneider, Tom, Beck, Robert H. - T., Ignatev, Nikolai, Yakovlev, Roman V., Cui, Liwang & Schlein, Yosef, 2023, The Tabanidae (Diptera) of the Greek islands and Cyprus: An annotated checklist with remarks on ecology, zoogeography, and new records on the East Mediterranean fauna, pp. 45-65 in Ecologica Montenegrina 67 on pages 48-49, DOI: 10.37828/em.2023.67.7, http://zenodo.org/record/13246703
Out-of-equilibrium quantum dynamics of fermionic gases in the presence of localized particle loss
Creators: name: Tarantelli, Francesco
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We address the effects of dissipative defects giving rise to a localized particle loss, in one-dimensional non-interacting lattice fermionic gases confined within a region of size $\ell$. We consider homogeneous systems within hard walls and inhomogeneous systems where the particles are trapped by space-dependent external potentials, such as harmonic traps. We model the dissipative particle-decay mechanism by Lindblad master equations governing the time evolution of the density matrix. The resulting quantum dynamics is analyzed in protocols starting from the ground state of the Hamiltonian for $N_0$ particles, then evolving under the effect of one dissipative particle-loss defect, for example at the center of the system. We study the interplay between time, size $\ell$ and the number $N_0$ of initial particles, considering two different situations: (i) fixed number $N_0$ of initial particles; (ii) fixed ratio $N_0/\ell$, corresponding to the thermodynamic limit of the initial equilibrium state. We show that the quantum evolutions of the particle number and density develop various asymptotic and intermediate dynamic regimes, and nontrivial large-time states when the dissipative mechanism acts at the center of the system.
description: 16 pages
Numerical methods for Mean field Games based on Gaussian Processes and Fourier Features
Creators: name: Mou, Chenchen
name: Yang, Xianjin
name: Zhou, Chao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this article, we propose two numerical methods, the Gaussian Process (GP) method and the Fourier Features (FF) algorithm, to solve mean field games (MFGs). The GP algorithm approximates the solution of a MFG with maximum a posteriori probability estimators of GPs conditioned on the partial differential equation (PDE) system of the MFG at a finite number of sample points. The main bottleneck of the GP method is to compute the inverse of a square gram matrix, whose size is proportional to the number of sample points. To improve the performance, we introduce the FF method, whose insight comes from the recent trend of approximating positive definite kernels with random Fourier features. The FF algorithm seeks approximated solutions in the space generated by sampled Fourier features. In the FF method, the size of the matrix to be inverted depends only on the number of Fourier features selected, which is much less than the size of sample points. Hence, the FF method reduces the precomputation time, saves the memory, and achieves comparable accuracy to the GP method. We give the existence and the convergence proofs for both algorithms. The convergence argument of the GP method does not depend on any monotonicity condition, which suggests the potential applications of the GP method to solve MFGs with non-monotone couplings in future work. We show the efficacy of our algorithms through experiments on a stationary MFG with a non-local coupling and on a time-dependent planning problem. We believe that the FF method can also serve as an alternative algorithm to solve general PDEs.
description: 34 pages, 4 figures
Krull-Remak-Schmidt decompositions in Hom-finite additive categories
Creators: name: Shah, Amit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18E05 (Primary) 16D70, 16L30, 16U40, 18E10 (Secondary)

description: An additive category in which each object has a Krull-Remak-Schmidt decomposition -- that is, a finite direct sum decomposition consisting of objects with local endomorphism rings -- is known as a Krull-Schmidt category. A Hom-finite category is an additive category $\mathcal{A}$ for which there is a commutative unital ring $k$, such that each Hom-set in $\mathcal{A}$ is a finite length $k$-module. The aim of this note is to provide a proof that a Hom-finite category is Krull-Schmidt, if and only if it has split idempotents, if and only if each indecomposable object has a local endomorphism ring.
description: v2: 17 pages, added reference Chen--Ye--Zhang, typos corrected and some minor changes. v1: 17 pages, comments welcome!
Hadron Collider Probes of the Quartic Couplings of Gluons to the Photon and $Z$ Boson
Creators: name: Ellis, John
name: Ge, Shao-Feng
name: Ma, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the experimental sensitivities of measuring the $gg \rightarrow Z γ$ process at the LHC to the dimension-8 quartic couplings of gluon pairs to the $Z$ boson and photon, in addition to comparing them with the analogous sensitivities in the $gg \to γγ$ process. These processes can both receive contributions from 4 different CP-conserving dimension-8 operators with distinct Lorentz structures that contain a pair of gluon field strengths, $\hat G^a_{μν}$, and a pair of electroweak SU(2) gauge field strengths, $W^i_{μν}$, as well as 4 similar operators containing a pair of $\hat G^a_{μν}$ and a pair of U(1) gauge field strengths, $B_{μν}$. We calculate the scattering angular distributions for $gg \rightarrow Z γ$ and the $Z \to \bar f f$ decay angular distributions for these 4 Lorentz structures, as well as the Standard Model background. We analyze the sensitivity of ATLAS measurements of the $Z(\to \ell^+\ell^-, \bar νν, \bar q q)γ$ final states with integrated luminosities up to 139 fb$^{-1}$ at $\sqrt{s} = 13$ TeV, showing that they exclude values $\lesssim 2$ TeV for the dimension-8 operator scales, and compare the $Z γ$ sensitivity with that of an ATLAS measurement of the $γγ$ final state. We present combined $Z γ$ and $γγ$ constraints on the scales of dimension-8 SMEFT operators and $γγ$ constraints on the nonlinearity scale of the Born-Infeld extension of the Standard Model. We also estimate the sensitivities to dimension-8 operators of experiments at possible future proton-proton colliders with centre-of-mass energies of 25, 50 and 100 TeV, and discuss possible measurements of the $Z$ spin and angular correlations.
description: 25 pages, 25 figures; part of the results were talked at CLHCP2021: https://indico.ihep.ac.cn/event/14560/session/6/contribution/113; v2, Fig.9 is updated by including combined results. 1 table is added; v3, several typos are corrected; v4, match to published version
A stochastic phase-space treatment of Bose gases in multimode and finite temperature systems
Creators: name: Ng, King Lun
Publisher: name: Swinburne
Year: 2024

description: Bose-Einstein condensation (BEC) is a quantum phenomenon that happens when boson gases are cooled to temperatures close to absolute zero, the atoms lose almost all energy of motion and condense together in the lowest quantum state, forming a giant "matter-wave". Although the original theory predicted that BEC occurs at absolute zero temperature, in real experiments BEC occurs with thermal fluctuations and in multimode. Here, we introduce and modify an alternative theory that is capable of including these features in a statistical way. By including the correct amount of noise, calculating the dynamics of possible samples and averaging the results, the more detailed BEC features can be estimated from this method.
Protein Enrichment by Flotation: Experiment and Modeling
Creators: name: Keshavarzi, Behnam
name: Krause, Thomas
name: Sikandar, Sidra
name: Schwarzenberger, Karin
name: Eckert, Kerstin
name: Ansorge-Schumacher, Marion B.
name: Heitkam, Sascha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Protein flotation is a process in which protein molecules are enriched by adsorption at rising bubbles. The bubbles then form a foam above the solution, where the liquid drains down and the dried foam, which is concentrated in protein, is extracted. Here, the recovery rate and purity of the extract depend on foam stability, surface coverage, bubble size, gas flow rate, etc. In this work, we performed flotation experiments using bovine serum albumin (BSA). In addition, an unsteady state simulation of the protein flotation process was carried out by numerically solving the liquid drainage equation in the foam. Thereby, the extracted liquid volume and protein concentration at the outlet were calculated with time. Required quantities such as foam stability, interface coverage or bubble size distribution were measured in corresponding experiments and were fed into the model. The experiments showed that the foam coalescence accelerates the liquid drainage leading to dryer extract and higher protein enrichment. The modeling also reproduced the liquid recovery and extract concentration of the flotation tests within a reasonable error range. The modeling solely relies on experimental inputs and does not require any tuning parameters. It can be further used for optimization or up-scaling of protein flotation.
Dynamic phases induced by two-level system defects on driven qubits
Creators: name: Wang, Yanxiang
name: You, Ziyang
name: Ian, Hou
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Recent experimental evidences point to two-level defects, located in the oxides and on the interfaces of the Josephson junctions, as the major constituents of decoherence in superconducting qubits. How these defects affect the qubit evolution with the presence of external driving is less well understood since the semiclassical qubit-field coupling renders the Jaynes-Cummings model for qubit-defect coupling undiagonalizable. We analyze the decoherence dynamics in the continuous coherent state space induced by the driving and solve the master equation endowed with an extra decay-cladded driving term via a Fokker-Planck equation. The solutions for diffusion propagators as Gaussian distributions show four distinct dynamic phases: four types of convergence paths to limit cycles of varying radius by the distribution mean, which are determined by the competing external driving and the defect decays. The qubit trajectory resulted from these solutions is a super-Poissonian over displac ed Fock states, which reduces to a Gibbs state of effective temperature decided by the defect at zero driving limit. Further, the Poincare map shows the dependence of the rate of convergence on the initial state. In other words, the qubit evolution can serve as an indicator of the defect coupling strength through the variation of the driving strength as a parameter.
Quantitative study of enantiomer-specific state transfer
Creators: name: Lee, JuHyeon
name: Bischoff, Johannes
name: Hernandez-Castillo, A. O.
name: Sartakov, Boris
name: Meijer, Gerard
name: Eibenberger-Arias, Sandra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We here report on a quantitative study of Enantiomer-Specific State Transfer (ESST), performed in a pulsed, supersonic molecular beam. The chiral molecule 1-indanol is cooled to low rotational temperatures (1-2 K) and a selected rotational level in the electronic and vibrational ground state of the most abundant conformer is depleted via optical pumping on the $S_{1} \leftarrow S_{0}$ transition. Further downstream, three consecutive microwave pulses with mutually perpendicular polarizations and with a well-defined duration and phase are applied. The population in the originally depleted rotational level is subsequently monitored via laser induced fluorescence (LIF) detection. This scheme enables a quantitative comparison of experiment and theory for the transfer efficiency in what is the simplest ESST triangle for any chiral molecule, that is, the one involving the absolute ground state level, $\left|J_{K_{a}K_{c}}\right\rangle = \left|0_{00}\right\rangle$. Moreover, this scheme improves the enantiomer enrichment by over an order of magnitude compared to previous works. Starting with a racemic mixture, a straightforward extension of this scheme allows to create a molecular beam with an enantiomer-pure rotational level, holding great prospects for future spectroscopic and scattering studies.
description: 6 pages, 4 figures
Measurement of the inclusive $\mathrm{t\bar{t}}$ production cross section in proton-proton collisions at $\sqrt{s} =$ 5.02 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The top quark pair production cross section is measured in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data were collected in a special LHC low-energy and low-intensity run in 2017, and correspond to an integrated luminosity of 302 pb$^{-1}$. The measurement is performed using events with one electron and one muon of opposite charge, and at least two jets. The measured cross section is 60.7 $\pm$ 5.0 (stat) $\pm$ 2.8 (syst) $\pm$ 1.1 (lumi) pb. To reduce the statistical uncertainty, a combination with the result in the single lepton + jets channel, based on data collected in 2015 at the same center-of-mass energy and corresponding to an integrated luminosity of 27.4 pb$^{-1}$, is then performed. The resulting measured value is 63.0 $\pm$ 4.1 (stat) $\pm$ 3.0 (syst+lumi) pb, in agreement with the standard model prediction of 66.8 $^{+2.9}_{-3.1}$ pb.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-20-004 (CMS Public Pages)
Membrane Limits in Quantum Gravity
Creators: name: Álvarez-García, Rafael
name: Kläwer, Daniel
name: Weigand, Timo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is expected that infinite distance limits in the moduli space of quantum gravity are accompanied by a tower of light states. In view of the emergent string conjecture, this tower must either induce a decompactification or correspond to the emergence of a tensionless critical string. We study the consistency conditions implied by this conjecture on the asymptotic behavior of quantum gravity under dimensional reduction. If the emergent string descends from a (2+1)-dimensional membrane in a higher-dimensional theory, we find that such a membrane must parametrically decouple from the Kaluza-Klein scale. We verify this censorship against emergent membrane limits, where the membrane would sit at the Kaluza-Klein scale, in the hypermultiplet moduli space of Calabi-Yau 3-fold compactifications of string/M-theory. At the classical level, a putative membrane limit arises, up to duality, from an M5-brane wrapping the asymptotically shrinking special Lagrangian 3-cycle corresponding to the Strominger-Yau-Zaslow fiber of the Calabi-Yau. We show how quantum corrections in the moduli space obstruct such a limit and instead lead to a decompactification to 11 dimensions, where the role of the M5- and M2-branes are interchanged.
description: 16 pages (two-column format), 2 figures; v2: references added, typos corrected, matches published version
Hybomitra decora
Creators: name: Müller, Günter C.
name: Prozorov, Alexey M.
name: Traore, Mohamed M.
name: Revay, Edita E.
name: Hogsette, Jerome A.
name: Kline, Daniel
name: Chaskopoulou, Alexandra
name: Prozorova, Tatiana A.
name: Volkova, Julia S.
name: Diarra, Rabiatou A.
name: Petrányi, Gergely
name: Schneider, Tom
name: Beck, Robert H. - T.
name: Ignatev, Nikolai
name: Yakovlev, Roman V.
name: Cui, Liwang
name: Schlein, Yosef
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Hybomitra
Hybomitra decora

description: 7. Hybomitra decora (Löw, 1858)
 Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien, 8, 588.
 Type locality. Syria.
 Range. Palearctic. East Mediterranean, from Bulgaria to Turkey, absent from the Greek mainland but found on Crete, in the south, in the Levant, from Syria to the Sinai Peninsula (Chvála et al., 1972; Müller et al., 2012b; Chvála, 2013; Evenhuis & Pape, 2023).
 New records. We collected two females in a Malaise trap at the edge of oak maquis on a rocky slope in central Cyprus, west of Agros, 1000 m a.s.l., mid-June 2017 (new record for Cyprus).
description: Published as part of Müller, Günter C., Prozorov, Alexey M., Traore, Mohamed M., Revay, Edita E., Hogsette, Jerome A., Kline, Daniel, Chaskopoulou, Alexandra, Prozorova, Tatiana A., Volkova, Julia S., Diarra, Rabiatou A., Petrányi, Gergely, Schneider, Tom, Beck, Robert H. - T., Ignatev, Nikolai, Yakovlev, Roman V., Cui, Liwang & Schlein, Yosef, 2023, The Tabanidae (Diptera) of the Greek islands and Cyprus: An annotated checklist with remarks on ecology, zoogeography, and new records on the East Mediterranean fauna, pp. 45-65 in Ecologica Montenegrina 67 on page 49, DOI: 10.37828/em.2023.67.7, http://zenodo.org/record/13246703
Self-supervised Learning for Clustering of Wireless Spectrum Activity
Creators: name: Milosheski, Ljupcho
name: Cerar, Gregor
name: Bertalanič, Blaž
name: Fortuna, Carolina
name: Mohorčič, Mihael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In recent years, much work has been done on processing of wireless spectrum data involving machine learning techniques in domain-related problems for cognitive radio networks, such as anomaly detection, modulation classification, technology classification and device fingerprinting. Most of the solutions are based on labeled data, created in a controlled manner and processed with supervised learning approaches. However, spectrum data measured in real-world environment is highly nondeterministic, making its labeling a laborious and expensive process, requiring domain expertise, thus being one of the main drawbacks of using supervised learning approaches in this domain. In this paper, we investigate the use of self-supervised learning (SSL) for exploring spectrum activities in a real-world unlabeled data. In particular, we compare the performance of two SSL models, one based on a reference DeepCluster architecture and one adapted for spectrum activity identification and clustering, and a baseline model based on K-means clustering algorithm. We show that SSL models achieve superior performance regarding the quality of extracted features and clustering performance. With SSL models we achieve reduction of the feature vectors size by two orders of magnitude, while improving the performance by a factor of 2 to 2.5 across the evaluation metrics, supported by visual assessment. Additionally we show that adaptation of the reference SSL architecture to the domain data provides reduction of model complexity by one order of magnitude, while preserving or even improving the clustering performance.
Quantum steering and quantum discord under noisy channels and entanglement swapping
Creators: name: Rosario, Pedro
name: Ducuara, Andrés F.
name: Susa, Cristian E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum entanglement, discord, and EPR-steering are properties which are considered as valuable resources for fuelling quantum information-theoretic protocols. EPR-steering is a property that is more general than Bell-nonlocality and yet more restrictive than entanglement. Quantum discord on the other hand, captures non-classical behaviour beyond that of entanglement, and its study has remained of active research interest during the past two decades. Exploring the behaviour of these quantum properties in different physical scenarios, like those simulated by open quantum systems, is therefore of crucial importance for understanding their viability for quantum technologies. In this work, we analyse the behaviour of EPR-steering, entanglement, and quantum discord, for two-qubit states under various quantum processes. First, we consider the three noisy channel scenarios of; phase damping, generalised amplitude damping and stochastic dephasing channel. Second, we explore the behaviour of these quantum properties in an entanglement swapping scenario. We quantify EPR-steering by means of an inequality with three-input two-output measurement settings, and address quantum discord as the interferometric power of quantum states. Our findings are the following. First, we show that some of the relatively straightforward noisy channels here considered, can induce non-trivial dynamics such as sudden death as well as death and revival of EPR-steering and entanglement. Second, we find that although noisy channels in general reduce the amount of correlations present in the system, the swapping protocol on the other hand displays scenarios where these quantum correlations can be enhanced. These results therefore illustrate that quantum processes do not exclusively affect the quantum properties of physical systems in a negative manner, but that they can also have positive effects on such properties.
description: 14 pages, 12 figures
Fragmentation functions for gluon into $B_c$ or $B_c^*$ meson
Creators: name: Zheng, Xu-Chang
name: Chang, Chao-Hsi
name: Wu, Xing-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the paper, we calculate the fragmentation functions for $g \to B_c$ and $g \to B_c^*$. The ultraviolet divergences in the calculation are removed through the renormalization of the operator definition of the fragmentation functions under the modified minimal subtraction scheme. We then obtain the fragmentation functions $D_{g \to B_c}(z,μ_F)$ and $D_{g \to B_c^*}(z,μ_F)$, which are presented as figures and fitting functions. The obtained fragmentation functions are complementary to the previous work on the next-to-leading order fragmentation functions for $\bar{b}\to B_c(B_c^*)$ and $c\to B_c(B_c^*)$.
description: 22 pages, 4 figures
Metricizing the Euclidean Space towards Desired Distance Relations in Point Clouds
Creators: name: Rass, Stefan
name: König, Sandra
name: Ahmad, Shahzad
name: Goman, Maksim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Geometry (cs.CG)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Given a set of points in the Euclidean space $\mathbb{R}^\ell$ with $\ell>1$, the pairwise distances between the points are determined by their spatial location and the metric $d$ that we endow $\mathbb{R}^\ell$ with. Hence, the distance $d(\mathbf x,\mathbf y)=δ$ between two points is fixed by the choice of $\mathbf x$ and $\mathbf y$ and $d$. We study the related problem of fixing the value $δ$, and the points $\mathbf x,\mathbf y$, and ask if there is a topological metric $d$ that computes the desired distance $δ$. We demonstrate this problem to be solvable by constructing a metric to simultaneously give desired pairwise distances between up to $O(\sqrt\ell)$ many points in $\mathbb{R}^\ell$. We then introduce the notion of an $\varepsilon$-semimetric $\tilde{d}$ to formulate our main result: for all $\varepsilon>0$, for all $m\geq 1$, for any choice of $m$ points $\mathbf y_1,\ldots,\mathbf y_m\in\mathbb{R}^\ell$, and all chosen sets of values $\{δ_{ij}\geq 0: 1\leq i
Stochastic modeling of spreading and dissipation in mixed-chaotic systems that are driven quasistatically
Creators: name: Winsten, Yehoshua
name: Cohen, Doron
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We analyze energy spreading for a system that features mixed chaotic phase-space, whose control parameters (or slow degrees of freedom) vary quasi-statically. For demonstration purpose we consider the restricted 3~body problem, where the distance between the two central stars is modulated due to their Kepler motion. If the system featured hard-chaos, one would expect diffusive spreading with coefficient that can be estimated using linear-response (Kubo) theory. But for mixed phase space the chaotic sea is multi-layered. Consequently, it becomes a challenge to find a robust procedure that translates the sticky dynamics into a stochastic model. We propose a Poincaré-sequencing method that reduces the multi-dimensional motion into a one-dimensional random-walk in impact-space. We test the implied relation between stickiness and the rate of spreading.
description: 16 pages, 13 figures
On cyclicity in discontinuous piecewise linear near-Hamiltonian differential systems with three zones having a saddle in the central one
Creators: name: Euzébio, R.
name: Gouveia, M.
name: Novaes, D.
name: Pessoa, C.
name: Ribeiro, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper, we study the number of limit cycles that can bifurcate from a periodic annulus of discontinuous planar piecewise linear Hamiltonian differential system with three zones separated by two parallel straight lines, such that the linear differential system, given by the piecewise one, in the region between the two straight lines (called of central subsystem) has a saddle at a point equidistant from these lines (obviously, the others subsystems have saddles and centers). We prove that the maximum number of limit cycles that bifurcate from the periodic annulus of this kind of piecewise Hamiltonian differential systems, by linear perturbations, is at least six. For this, we obtain normal forms for the systems and study the number of zeros of its Melnikov functions defined in two and three zones.
description: arXiv admin note: text overlap with arXiv:2207.05177, arXiv:2109.10311
Single-photon blockade in quasichiral atom-photon interaction: Simultaneous high purity and high efficiency
Creators: name: Lu, Yu-Wei
name: Liu, Jing-Feng
name: Li, Runhua
name: Tan, Haishu
name: Wu, Yanxiong
name: Li, Yongyao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the single-photon blockade (1PB) in the quasichiral regime of atom-photon interaction that mediates via dissipative environment, where the effective atom-photon interaction is asymmetrical but achiral. The synthetic magnetic current in the closed-loop coupling breaks down the reciprocity of atom-photon interaction, resulting in an asymmetrical and even completely unidirectional effective coupling between two selected quantum states. As an example, we couple the single-atom cavity-QED (cQED) system to a strongly dissipative auxiliary cavity. We find that in the quasichiral regime, the unconventional photon blockade (UPB) always incorporates with the conventional photon blockade (CPB) in the condition of maximum chirality. Furthermore, we show that 1PB in the quasichiral regime combines the advantages of UPB and CPB, demonstrating the perfect single-photon purity, higher efficiency, smooth time dynamics as well as lower requirement of modes coupling to achieve UPB. Our work paves the way for 1PB towards practical applications and reveals the intriguing quantum-optics phenomena in the quasichiral light-matter interaction.
description: 9 pages, 6 figures
Generalized recursive atom ordering and equivalence to CL-shellability
Creators: name: Hersh, Patricia
name: Stadnyk, Grace
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E45, 06A07

description: Björner and Wachs introduced CL-shellability as a technique for studying the topological structure of order complexes of partially ordered sets (posets). They also introduced the notion of recursive atom ordering, and they proved that a finite bounded poset is CL-shellable if and only if it admits a recursive atom ordering.
 In this paper, a generalization of the notion of recursive atom ordering is introduced. A finite bounded poset is proven to admit such a generalized recursive atom ordering if and only if it admits a traditional recursive atom ordering. This is also proven equivalent to admitting a CC-shelling (a type of shelling introduced by Kozlov) with a further property called self-consistency. Thus, CL-shellability is proven equivalent to self-consistent CC-shellability. As an application, the uncrossing posets, namely the face posets for stratified spaces of planar electrical networks, are proven to be dual CL-shellable.
description: Significant revisions, version accepted to Combinatorial Theory
Modelling Virus Contact Mechanics under Atomic Force Imaging Conditions
Creators: name: Piersanti, Paolo
name: White, Kristen
name: Dragnea, Bogdan
name: Temam, Roger
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we present a discrete model governing the deformation of a convex regular polygon subjected not to cross a given flat rigid surface, on which it initially lies in correspondence of one point only. First, we set up the model in the form of a set of variational inequalities posed over a non-empty, closed and convex subset of a suitable Euclidean space. Secondly, we show the existence and uniqueness of the solution. The model provides a simplified illustration of processes involved in virus imaging by atomic force microscopy: adhesion to a surface, distributed strain, relaxation to a shape that balances adhesion and elastic forces. The analysis of numerical simulations results based on this model opens a new way of estimating the contact area and elastic parameters in virus contact mechanics studies.
Atylotus fulvus
Creators: name: Müller, Günter C.
name: Prozorov, Alexey M.
name: Traore, Mohamed M.
name: Revay, Edita E.
name: Hogsette, Jerome A.
name: Kline, Daniel
name: Chaskopoulou, Alexandra
name: Prozorova, Tatiana A.
name: Volkova, Julia S.
name: Diarra, Rabiatou A.
name: Petrányi, Gergely
name: Schneider, Tom
name: Beck, Robert H. - T.
name: Ignatev, Nikolai
name: Yakovlev, Roman V.
name: Cui, Liwang
name: Schlein, Yosef
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tabanidae
Atylotus
Atylotus fulvus

description: 9. Atylotus fulvus (Meigen, 1804)
 Klassifikazion und Beschreibung der europäischen zweiflügligen Insekten, 1, 170.
 Type locality. Germany.
 Range. Palearctic, from Morocco through most of Europe, up to Scandinavia, eastwards through southern Siberia to the Russian Far East (Leclercq, 1966a; Chvála et al., 1972; Chvála, 2013). According to Chvála (2013), it is absent from the Greek mainland, the Greek islands, and Cyprus, but according to Evenhuis & Pape (2023), it was found in Turkey.
 New records. We collected a single specimen with a Malaise trap on Rhodes Island, near the banks of the upper Gadoura River, in mid-May 2014 (new record for Dodecanese).
description: Published as part of Müller, Günter C., Prozorov, Alexey M., Traore, Mohamed M., Revay, Edita E., Hogsette, Jerome A., Kline, Daniel, Chaskopoulou, Alexandra, Prozorova, Tatiana A., Volkova, Julia S., Diarra, Rabiatou A., Petrányi, Gergely, Schneider, Tom, Beck, Robert H. - T., Ignatev, Nikolai, Yakovlev, Roman V., Cui, Liwang & Schlein, Yosef, 2023, The Tabanidae (Diptera) of the Greek islands and Cyprus: An annotated checklist with remarks on ecology, zoogeography, and new records on the East Mediterranean fauna, pp. 45-65 in Ecologica Montenegrina 67 on page 50, DOI: 10.37828/em.2023.67.7, http://zenodo.org/record/13246703
Critical crossover phenomena driven by symmetry-breaking defects at quantum transitions
Creators: name: Franchi, Alessio
name: Rossini, Davide
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the effects of symmetry-breaking defects at continuous quantum transitions (CQTs), which may arise from localized external fields coupled to the order-parameter operator. The problem is addressed within renormalization-group (RG) and finite-size scaling frameworks. We consider the paradigmatic one-dimensional quantum Ising models at their CQT, in the presence of defects which break the global ${\mathbb Z}_2$ symmetry. We show that such defects can give rise to notable critical crossover regimes where the ground-state properties experience substantial and rapid changes, from symmetric conditions to symmetry-breaking boundaries. An effective characterization of these crossover phenomena driven by defects is achieved by analyzing the ground-state fidelity associated with small changes of the defect strength. Within the critical crossover regime, the fidelity susceptibility shows a power-law divergence when increasing the system size, related to the RG dimension of the defect strength; in contrast, outside the critical defect regime, it remains finite. We support the RG scaling arguments with numerical results.
description: 13 pages, 11 figures
Reevaluation of the cosmic antideuteron flux from cosmic-ray interactions and from exotic sources
Creators: name: Šerkšnytė, Laura
name: Königstorfer, Stephan
name: von Doetinchem, Philip
name: Fabbietti, Laura
name: Gomez-Coral, Diego Mauricio
name: Herms, Johannes
name: Ibarra, Alejandro
name: Pöschl, Thomas
name: Shukla, Anirvan
name: Strong, Andrew
name: Vorobyev, Ivan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cosmic-ray antideuterons could be a key for the discovery of exotic phenomena in our Galaxy, such as dark-matter annihilations or primordial black hole evaporation. Unfortunately the theoretical predictions of the antideuteron flux at Earth are plagued with uncertainties from the mechanism of antideuteron production and propagation in the Galaxy. We present the most up-to-date calculation of the antideuteron fluxes from cosmic-ray collisions with the interstellar medium and from exotic processes. We include for the first time the antideuteron inelastic interaction cross section recently measured by the ALICE collaboration to account for the loss of antideuterons during propagation. In order to bracket the uncertainty in the expected fluxes, we consider several state-of-the-art models of antideuteron production and of cosmic-ray propagation.