cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spatially resolving amplitude and phase of light with a reconfigurable photonic integrated circuit
Creators: name: Bütow, Johannes
name: Eismann, Jörg S.
name: Milanizadeh, Maziyar
name: Morichetti, Francesco
name: Melloni, Andrea
name: Miller, David A. B.
name: Banzer, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photonic integrated circuits (PICs) play a pivotal role in many applications. Particularly powerful are circuits based on meshes of reconfigurable Mach-Zehnder interferometers as they enable active processing of light. Various possibilities exist to get light into such circuits. Sampling an electromagnetic field distribution with a carefully designed free-space interface is one of them. Here, a reconfigurable PIC is used to optically sample and process free-space beams so as to implement a spatially resolving detector of amplitudes and phases. In order to perform measurements of this kind we develop and experimentally implement a versatile method for the calibration and operation of such integrated photonics based detectors. Our technique works in a wide parameter range, even when running the chip off the design wavelength. Amplitude, phase and polarization sensitive measurements are of enormous importance in modern science and technology, providing a vast range of applications for such detectors.
Thermophoretically induced large-scale deformations around microscopic heat centers
Creators: name: Puljiz, Mate
name: Orlishausen, Michael
name: Köhler, Werner
name: Menzel, Andreas M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Selectively heating a microscopic colloidal particle embedded in a soft elastic matrix is a situation of high practical relevance. For instance, during hyperthermic cancer treatment, cell tissue surrounding heated magnetic colloidal particles is destroyed. Experiments on soft elastic polymeric matrices suggest a very long-ranged, non-decaying radial component of the thermophoretically induced displacement fields around the microscopic heat centers. We theoretically confirm this conjecture using a macroscopic hydrodynamic two-fluid description. Both, thermophoretic and elastic effects are included in this theory. Indeed, we find that the elasticity of the environment can cause the experimentally observed large-scale radial displacements in the embedding matrix. Additional experiments confirm the central role of elasticity. Finally, a linearly decaying radial component of the displacement field in the experiments is attributed to the finite size of the experimental sample. Similar results are obtained from our theoretical analysis under modified boundary conditions.
description: 10 pages, 7 figures
Minimal models of field theories: SDYM and SDGR
Creators: name: Skvortsov, Evgeny
name: Van Dongen, Richard
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: There exists a natural $L_\infty$-algebra or $Q$-manifold that can be associated to any (gauge) field theory. Perturbatively, it can be obtained by reducing the $L_\infty$-algebra behind the jet space BV-BRST formulation to its minimal model. We explicitly construct the minimal models of self-dual Yang-Mills and self-dual gravity theories, which also represents their equations of motion as Free Differential Algebras. The minimal model regains all relevant information about the field theory, e.g. actions, charges, anomalies, can be understood in terms of the corresponding $Q$-cohomology.
description: 23 pages + Appendices + Refs = 40 pages
J-matrix method of scattering for inverse-square singular potentials with supercritical coupling II. Regularization
Creators: name: Alhaidari, Abdulaziz D.
name: Bahlouli, Hocine
name: Al-Marzoug, S. M.
name: Aparicio, Carlos P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper is a continuation of the previous one [Journal xx, xxxxx (2022)]. Here, we reformulate the same J-matrix theory by regularizing the inverse square singular potential. The objective is to restore rapid convergence of the calculation in the theory and recover the conventional tridiagonal representation. Partial success is achieved.
description: 9 pages, 2 figures, continuation of arXiv:2012.07493
Structural and molecular studies of the development of the mouse ureter and ureteric tree
Creators: name: Mitchell., Eleanor Katherine Louise
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
АРАБСКАЯ РЕСПУБЛИКА ЕГИПЕТ В МИРОВОЙ ЭКОНОМИКЕ: ВОЗМОЖНОСТИ РАЗВИТИЯ
Creators: name: НИКОЛАЕВ Д.А.
Publisher: name: Инновации и инвестиции
Year: 2020
Subjects: ВАЛОВЫЙ ВНУТРЕННИЙ ПРОДУКТ
ТОВАРООБОРОТ
ИНВЕСТИЦИИ
СЫРЬЕВЫЕ РЕСУРСЫ
ЕГИПЕТ
РОССИЯ
GROSS DOMESTIC PRODUCT
TRADE
INVESTMENT
RAW MATERIALS
EGYPT
RUSSIA

description: В статье рассматриваются основные макроэкономические показатели развития экономики Арабской Республики Египет. Анализируется структура валового внутреннего продукта, структура товарооборота, показаны основные торговые партнеры государства. Отмечается, что Египет обладает определенными углеводородного сырья, а также на территории страны сосредоточены такие полезные ископаемые, как: железная руда, мышьяк, кадмий, медь, хром, свинец, ртуть, таллий и цинк, молибден, стронций, олово и др. Рассматривая структуру инвестирования в экономику Египта, было отмечено, что ключевым направлением инвестирования является электроэнергетическая отрасль, рост которой с 2017 года составил более, чем 300%. В исследовании рассматривается возможности и перспективы сотрудничества Египта с Российской Федерацией, как перспективного рынка сбыта продукции. Укрепление внешнеэкономических связей России и Египта позволит в будущем выйти РФ на такой крупный рынок, как рынок Африканского континента. В статье также отмечается роль подписанного в мае 2018 года «Соглашение между Правительством Российской Федерации и Правительством Арабской Республики Египет о создании и обеспечении деятельности Российской промышленной зоны в Арабской Республике Египет (РПЗ)», реализация Соглашения позволит увеличить рост экономики Египта.
Structure formation simulations with momentum exchange: alleviating tensions between high-redshift and low-redshift cosmological probes
Creators: name: Baldi, Marco
name: Simpson, Fergus
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Persisting tensions between the cosmological constraints derived from low-redshift probes and the ones obtained from temperature and polarisation anisotropies of the Cosmic Microwave Background -- although not yet providing compelling evidence against the $Λ$CDM model -- seem to consistently indicate a slower growth of density perturbations as compared to the predictions of the standard cosmological scenario. Such behavior is not easily accommodated by the simplest extensions of General Relativity, such as f(R) models, which generically predict an enhanced growth rate. In the present work we present the outcomes of a suite of large N-body simulations carried out in the context of a cosmological model featuring a non-vanishing scattering cross section between the dark matter and the dark energy fields, for two different parameterisations of the dark energy equation of state. Our results indicate that these Dark Scattering models have very mild effects on many observables related to large-scale structures formation and evolution, while providing a significant suppression of the amplitude of linear density perturbations and the abundance of massive clusters. Our simulations therefore confirm that these models offer a promising route to alleviate existing tensions between low-redshift measurements and those of the CMB.
description: 14 pages, 15 figures, submitted to MNRAS
Microscopic and Macroscopic Effects in the Decoherence of Neutrino Oscillations
Creators: name: Cheng, Ting
name: Lindner, Manfred
name: Rodejohann, Werner
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a generic structure (the layer structure) for decoherence effects in neutrino oscillations, which includes decoherence from quantum mechanical and classical uncertainties. The calculation is done by combining the concept of open quantum system and quantum field theory, forming a structure composed of phase spaces from microscopic to macroscopic level. Having information loss at different levels, quantum mechanical uncertainties parameterize decoherence by an intrinsic mass eigenstate separation effect, while decoherence for classical uncertainties is typically dominated by a statistical averaging effect. With the help of the layer structure, we classify the former as state decoherence (SD) and the latter as phase decoherence (PD), then further conclude that both SD and PD result from phase wash-out effects of different phase structures on different layers. Such effects admit for simple numerical calculations of decoherence for a given width and shape of uncertainties. While our structure is generic, so are the uncertainties, nonetheless, a few notable ones are: the wavepacket size of the external particles, the effective interaction volume at production and detection, the energy reconstruction model and the neutrino production profile. Furthermore, we estimate the experimental sensitivities for SD and PD parameterized by the uncertainty parameters, for reactor neutrinos and decay-at-rest neutrinos, using a traditional rate measuring method and a novel phase measuring method.
description: 51 pages, 19 figures, 2 tables
АНАЛИЗ РАЗВИТИЯ АТОМНОЙ ЭНЕРГЕТИКИ ИНДИИ
Creators: name: ЮРЧЕНКО Н.Ю.
Publisher: name: Инновации и инвестиции
Year: 2020
Subjects: ИНДИЯ
АТОМНАЯ ЭНЕРГЕТИКА
АЭС
ЯДЕРНЫЙ РЕАКТОР
INDIA
NUCLEAR ENERGY
NUCLEAR POWER PLANTS
NUCLEAR REACTOR

description: Начиная с 1985 года, потребность в электроэнергии Индии постоянно увеличивается и в последующие годы, по мнению специалистов, в связи с постоянным экономическим ростом только продолжится. Согласно реализуемой правительством страны стратегии, более чистые и устойчивые источники энергии должны играть главную роль в энергетическом балансе страны. Обеспечение безопасности для Индии, как страны со стремительно развивающейся экономикой и одновременно недостаточно развитой инфраструктурой, в том числе, энергетической, является одной из первоочередных задач. Необходимость увеличения производства ядерной энергии обусловливается не только высокой карбонизацией электрогенерации в стране (подавляющий объем электроэнергии здесь производится угольными ТЭС), но и в целом серьезным уровнем загрязнения окружающей среды. Альтернативные источники энергии, требующие намного более существенной площади и в определенной степени, зависящие от природных условий, в данном плане намного менее эффективны, чем мощные и стабильные АЭС. Поэтому приоритетом индийской власти является развитие низкоуглеродной электрогенерации. Ядерная энергия является тем ресурсом, который может повысить энергетическую безопасность Индии и удовлетворить потребности обеспечения как экономического роста, так и экологической устойчивости Индии. В работе рассматриваются вопросы сотрудничества Индии с иностранными партнерами, такими как российский поставщик «Атомстройэкспорт», занимающийся строительством крупнейшей АЭС Индии Кудамкулан на легководных реакторах ВВЭР-1200, с французской компанией «Areva», поставляющей европейский реактор под давлением EPR для атомной электростанции в Джайтапуре, и сотрудничество с США в вопросах строительства реакторов с водой под давлением.
Superfluid drag between excitonic polaritons and superconducting electron gas
Creators: name: Aminov, Azat F.
name: Sokolik, Alexey A.
name: Lozovik, Yurii E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Andreev-Bashkin effect, or superfluid drag, is predicted in a system of Bose-condensed excitonic polaritons in optical microcavity coupled by electron-exciton interaction with a superconducting layer. Two possible setups with spatially indirect dipole excitons or direct excitons are considered. The drag density characterizing a magnitude of this effect is found by many-body calculations with taking into account dynamical screening of electron-exciton interaction. For the superconducting electronic layer, we assume the recently proposed polaritonic mechanism of Cooper pairing, although the preexisting thin-film superconductor should also demonstrate the effect. According to our calculations, the drag density can reach considerable values in realistic conditions, with excitonic and electronic layers made from GaAs-based quantum wells or two-dimensional transition metal dichalcogenides. The predicted nondissipative drag could be strong enough to be observable as induction of a supercurrent in the electronic layer by a flow of polariton Bose condensate.
description: 17 pages, 9 figures; revised version with Fig. 7 added and additional explanations included
Modeling the Galaxy Distribution in Clusters using Halo Cores
Creators: name: Korytov, Danila
name: Rangel, Esteban
name: Bleem, Lindsey
name: Frontiere, Nicholas
name: Habib, Salman
name: Heitmann, Katrin
name: Hollowed, Joseph
name: Pope, Adrian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The galaxy distribution in dark matter-dominated halos is expected to approximately trace the details of the underlying dark matter substructure. In this paper we introduce halo `core-tracking' as a way to efficiently follow the small-scale substructure in cosmological simulations and apply the technique to model the galaxy distribution in observed clusters. The method relies on explicitly tracking the set of particles identified as belonging to a halo's central density core, once a halo has attained a certain threshold mass. The halo cores are then followed throughout the entire evolution of the simulation. The aim of core-tracking is to simplify substructure analysis tasks by avoiding the use of subhalos and, at the same time, to more easily account for the so-called ``orphan'' galaxies, which have lost substantial dark mass due to tidal stripping. We show that simple models based on halo cores can reproduce the number and spatial distribution of galaxies found in optically-selected clusters in the Sloan Digital Sky Survey. We also discuss future applications of the core-tracking methodology in studying the galaxy-halo connection.
description: 17 pages, 20 figures, 1 Appendix; version accepted by OJA
A Fully-autonomous Framework of Unmanned Surface Vehicles in Maritime Environments using Gaussian Process Motion Planning
Creators: name: Meng, Jiawei
name: Humne, Ankita
name: Bucknall, Richard
name: Englot, Brendan
name: Liu, Yuanchang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Unmanned surface vehicles (USVs) are of increasing importance to a growing number of sectors in the maritime industry, including offshore exploration, marine transportation and defence operations. A major factor in the growth in use and deployment of USVs is the increased operational flexibility that is offered through use of autonomous navigation systems that generate optimised trajectories. Unlike path planning in terrestrial environments, planning in the maritime environment is more demanding as there is need to assure mitigating action is taken against the significant, random and often unpredictable environmental influences from winds and ocean currents. With the focus of these necessary requirements as the main basis of motivation, this paper proposes a novel motion planner, denoted as GPMP2*, extending the application scope of the fundamental GP-based motion planner, GPMP2, into complex maritime environments. An interpolation strategy based on Monte-Carlo stochasticity has been innovatively added to GPMP2* to produce a new algorithm named GPMP2* with Monte-Carlo stochasticity (MC-GPMP2*), which can increase the diversity of the paths generated. In parallel with algorithm design, a ROS based fully-autonomous framework for an advanced unmanned surface vehicle, the WAM-V 20 USV, has been proposed. The practicability of the proposed motion planner as well as the fully-autonomous framework have been functionally validated in a simulated inspection missions for an offshore wind farm in ROS.
description: 17 pages, 15 figures
Consistency of WIMP Dark Matter as radiative neutrino mass messenger
Creators: name: Merle, Alexander
name: Platscher, Moritz
name: Rojas, Nicolás
name: Valle, José W. F.
name: Vicente, Avelino
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The scotogenic scenario provides an attractive approach to both Dark Matter and neutrino mass generation, in which the same symmetry that stabilises Dark Matter also ensures the radiative seesaw origin of neutrino mass. However the simplest scenario may suffer from inconsistencies arising from the spontaneous breaking of the underlying $\mathbb{Z}_2$ symmetry. Here we show that the singlet-triplet extension of the simplest model naturally avoids this problem due to the presence of scalar triplets neutral under the $\mathbb{Z}_2$ which affect the evolution of the couplings in the scalar sector. The scenario offers good prospects for direct WIMP Dark Matter detection through the nuclear recoil method.
description: 16 pages, 7 figures
Scalarization of planar anti de Sitter charged black holes in Einstein-Maxwell-Scalar theory
Creators: name: Promsiri, Chatchai
name: Tangphati, Takol
name: Hirunsirisawat, Ekapong
name: Ponglertsakul, Supakchai
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct scalarized planar charged black holes in Einstein-Maxwell-scalar (EMS) theory with the presence of a negative cosmological constant. Domains of existence of black hole solutions are given in term of nonminimally coupling constant $α$. Perturbative stability of a scalarized black hole is investigated by calculating its quasinormal modes. Thermodynamic properties of the scalarized planar solution are also discussed. We observe no evidence of instability of the scalarized black holes. Moreover, we find that scalarized planar charged AdS black holes are thermodynamically preferred over scalar-free solutions in grand canonical and canonical ensembles. The transition between scalar-free solutions and scalarized solutions is found to be the thermal second order phase transition. The transition of these solutions shares some similar features with conductor-superconductor phase transition.
description: 31 pages, 13 figures, to match Physical Review D version
Individual differences in the effects of caffeine on human circadian rhythms
Creators: name: Mitchell., Paula Jane
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Experimental Study of Dust Acoustic Waves in the Strongly Correlated Regime
Creators: name: Bandyopadhyay, P.
name: Prasad, G.
name: Sen, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Low frequency dust acoustic waves (DAW) were excited in a laboratory argon dusty plasma by modulating the discharge voltage with a low frequency AC signal. Metallic graphite particles were used as dust grains and a digital FFT technique was used to obtain dispersion characteristics. The experimental dispersion relation shows the reduction of phase velocity and a regime where $\partial ω/\partial k < 0$. A comparison is made with existing theoretical model.
description: It contains four pages with three figures
ПЕРСПЕКТИВЫ СОТРУДНИЧЕСТВА ЕАЭС И ИРАНА В ЭНЕРГЕТИЧЕСКОЙ СФЕРЕ
Creators: name: АВДАЛЯН Г.М.
name: АМИРИАН З.
Publisher: name: Инновации и инвестиции
Year: 2020
Subjects: ЕАЭС
ИРАН
ЭНЕРГЕТИКА
ЭНЕРГОЭФФЕКТИВНОСТЬ
EAEU
IRAN
ENERGY
ENERGY EFFICIENCY

description: В статье анализируется энергетическое сотрудничество Евразийского экономического союза (ЕАЭС) и Исламской Республики Ирана и связанные с этим совместные реализуемые и потенциальные проекты в рамках энергетической сферы принимая во внимание нестабильную внешнюю конъюнкту. Особую актуальность данное взаимовыгодное сотрудничество приобретает в контексте колоссального энергетического потенциала двух сторон, а также учитывая вступление в силу временного соглашения, ведущего к образованию зоны свободной торговли между интеграционным объединением и Ираном. Проведена оценка энергоемкости лидирующих экономик ЕАЭС и Ирана, проанализированы основные макроэкономические показатели, а также ключевые показатели ТЭК. Рассматриваются перспективные проекты в области электроэнергетики, а также текущее возможности взаимодействия и дельнейшее сотрудничество в нефтегазовой отрасли, что в целом поспособствует укреплению экономик и развитию как экономик стран ЕАЭС, так и Ирана.
BioDT MS23 - Guidelines on Collaboration Principles for RI Nodes
Creators: name: Kusch, Erik
Publisher: name: Zenodo
Year: 2023
Subjects: digital twin
biodiversity
data modelling
Research Infrastructure

description: The BioDT Task 4.3.1 is aimed at capacity and awareness building among research infrastructure (RI) nodes and European data publishers to deliver the new data streams. Progressing from early prototype use cases towards the implementation of digital twins will require capacity building, outreach, and training for the RI nodes. Training events and workshops will enable and inform the change of data management culture to deliver biodiversity data streams while simultaneously progressing towards more advanced data formats. This task is essential to develop capabilities and to enable research communities supported by RI nodes to deliver dynamic data and information originating from different sources as well as stay up to date with evolving analytical and modelling methods. To this end, it is vital that efforts among and across RI nodes are harmonized and collaboration potential is realized. Here, we highlight ongoing work to identify collaboration potential, propose guidelines for improving collaboration and coordination, and expand on future products to facilitate uptake of our proposed principles.
KMT-2021-BLG-0240: Microlensing event with a deformed planetary signal
Creators: name: Han, Cheongho
name: Kim, Doeon
name: Yang, Hongjing
name: Gould, Andrew
name: Jung, Youn Kil
name: Albrow, Michael D.
name: Chung, Sun-Ju
name: Hwang, Kyu-Ha
name: Lee, Chung-Uk
name: Ryu, Yoon-Hyun
name: Shin, In-Gu
name: Shvartzvald, Yossi
name: Yee, Jennifer C.
name: Zang, Weicheng
name: Cha, Sang-Mok
name: Kim, Dong-Jin
name: Kim, Seung-Lee
name: Lee, Dong-Joo
name: Lee, Yongseok
name: Park, Byeong-Gon
name: Pogge, Richard W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The light curve of the microlensing event KMT-2021-BLG-0240 exhibits a short-lasting anomaly with complex features near the peak at the 0.1~mag level from a single-lens single-source model. We conducted modeling of the lensing light curve under various interpretations to reveal the nature of the anomaly. It is found that the anomaly cannot be explained with the usual model based on a binary-lens (2L1S) or a binary-source (1L2S) interpretation. However, a 2L1S model with a planet companion can describe part of the anomaly, suggesting that the anomaly may be deformed by a tertiary lens component or a close companion to the source. From the additional modeling, we find that all the features of the anomaly can be explained with either a triple-lens (3L1S) model or a binary-lens binary-source (2L2S) model obtained under the 3L1S interpretation. However, it is difficult to validate the 2L2S model because the light curve does not exhibit signatures induced by the source orbital motion and the ellipsoidal variations expected by the close separation between the source stars according to the model. We, therefore, conclude that the two interpretations cannot be distinguished with the available data, and either can be correct. According to the 3L1S solution, the lens is a planetary system with two sub-Jovian-mass planets in which the planets have masses of 0.32--0.47~$M_{\rm J}$ and 0.44--0.93~$M_{\rm J}$, and they orbit an M dwarf host. According to the 2L2S solution, on the other hand, the lens is a single planet system with a mass of $\sim 0.21~M_{\rm J}$ orbiting a late K-dwarf host, and the source is a binary composed of a primary of a subgiant or a turnoff star and a secondary of a late G dwarf. The distance to the planetary system varies depending on the solution: $\sim 7.0$~kpc according to the 3L1S solution and $\sim 6.6$~kpc according to the 2L2S solution.
description: 10 pages, 8 figures, 3 tables
Mode-specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams
Creators: name: Vento, Valeria
name: Roelli, Philippe
name: Verlekar, Sachin
name: Galland, Christophe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nanocavities formed by ultrathin metallic gaps, such as the nanoparticle-on-mirror geometry, permit the reproducible engineering and enhancement of light-matter interaction thanks to mode volumes reaching the smallest values allowed by quantum mechanics. Although a large body of experimental data has confirmed theoretical predictions regarding the dramatically enhanced vacuum field in metallic nanogaps, much fewer studies have examined the far-field to near-field input coupling. Estimates of this quantity usually rely on numerical simulations under a plane wave background field, whereas most experiments employ a strongly focused laser beam. Moreover, it is often assumed that tuning the laser frequency to that of a particular cavity mode is a sufficient condition to resonantly excite its near-field. Here, we experimentally demonstrate selective excitation of nanocavity modes controlled by the polarization and frequency of the laser beam. We reveal mode-selectivity by recording fine confocal maps of Raman scattering intensity excited by cylindrical vector beams, which are compared to the known excitation near-field patterns. Our measurements allow unambiguous identification of the transverse vs. longitudinal character of the excited cavity mode, and of their relative input coupling rates as a function of laser wavelength. The method introduced here is easily applicable to other experimental scenarios and our results are an important step to connect far-field with near-field parameters in quantitative models of nanocavity-enhanced phenomena such as molecular cavity optomechanics, polaritonics and surface-enhanced spectroscopies.
description: 23 pages, 11 figures (SI included)
Boosting mono-jet searches with model-agnostic machine learning
Creators: name: Finke, Thorben
name: Krämer, Michael
name: Lipp, Maximilian
name: Mück, Alexander
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how weakly supervised machine learning can improve the sensitivity of LHC mono-jet searches to new physics models with anomalous jet dynamics. The Classification Without Labels (CWoLa) method is used to extract all the information available from low-level detector information without any reference to specific new physics models. For the example of a strongly interacting dark matter model, we employ simulated data to show that the discovery potential of an existing generic search can be boosted considerably.
description: 19 pages, 3 figures. v2: references added
Signature Gröbner bases in free algebras over rings
Creators: name: Hofstadler, Clemens
name: Verron, Thibaut
Publisher: name: arXiv
Year: 2023
Subjects: subject: Commutative Algebra (math.AC)
subject: Symbolic Computation (cs.SC)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We generalize signature Gröbner bases, previously studied in the free algebra over a field or polynomial rings over a ring, to ideals in the mixed algebra $R[x_1,...,x_k]\langle y_1,\dots,y_n \rangle$ where $R$ is a principal ideal domain. We give an algorithm for computing them, combining elements from the theory of commutative and noncommutative (signature) Gröbner bases, and prove its correctness. Applications include extensions of the free algebra with commutative variables, e.g., for homogenization purposes or for performing ideal theoretic operations such as intersections, and computations over $\mathbb{Z}$ as universal proofs over fields of arbitrary characteristic. By extending the signature cover criterion to our setting, our algorithm also lifts some technical restrictions from previous noncommutative signature-based algorithms, now allowing, e.g., elimination orderings. We provide a prototype implementation for the case when $R$ is a field, and show that our algorithm for the mixed algebra is more efficient than classical approaches using existing algorithms.
description: 10 pages
Mass hierarchy sensitivity of medium baseline reactor neutrino experiments with multiple detectors
Creators: name: Wang, Hongxin
name: Zhan, Liang
name: Li, Yu-Feng
name: Cao, Guofu
name: Chen, Shenjian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report the neutrino mass hierarchy (MH) sensitivity of medium baseline reactor neutrino experiments with multiple detectors. Sensitivity of determining the MH can be significantly improved by adding a near detector and combining both the near and far detectors. The size of the sensitivity improvement is related to accuracy of the individual mass-splitting measurements and requires strict control on the relative energy scale uncertainty of the near and far detectors. We study the impact of both baseline and target mass of the near detector on the combined sensitivity. A figure-of-merit is defined to optimize the baseline and target mass of the near detector and the optimal selections are $\sim$13~km and $\sim$4~kton respectively for a far detector with the 20~kton target mass and 52.5~km baseline. As typical examples of future medium baseline reactor neutrino experiments, the optimal location and target mass of the near detector are selected for JUNO and RENO-50. Finally, we discuss distinct effects of the neutrino spectrum uncertainty for setups of a single detector and double detectors, which indicate that the spectrum uncertainty can be well constrained in the presence of the near detector.
description: 7 pages, 9 figures
Supersymmetric $dS_n$ solutions for $n \geq 5$ in $D=11$ supergravity
Creators: name: Farotti, D.
name: Gutowski, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine the necessary and sufficient conditions for warped product $dS_n$ solutions, $5 \leq n \leq 10$, to preserve supersymmetry in $D=11$ supergravity, without assuming factorization of the Killing spinors. We prove that for $7 \leq n \leq 10$, all such solutions are flat, with vanishing 4-form. We also show that the only warped product $dS_6$ solutions are either the maximally supersymmetric $AdS_7 \times S^4$ solution, or $\mathbb{R}^{1,6} \times N_4$ where $N_4$ is hyperKahler, with vanishing 4-form. Supersymmetric warped product $dS_5$ solutions are then classified; it is shown that all such solutions are generalized M5-brane configurations, for which the transverse space is $\mathbb{R} \times N_4$, and $N_4$ is a hyperKahler manifold. If the 4-form is covariantly constant, then $N_4$ admits a hyperKahler potential.
description: An interpretation for the warped product dS5 solutions as a generalized M5-brane configuration has been added to section 5.3. Consequently, sections 5.5 and Appendix F are superfluous and have been removed. 36 pages, latex
ОРГАНИЗАЦИЯ РЕМОНТНОГО ПРОИЗВОДСТВА И ПОСЛЕПРОДАЖНОГО ОБСЛУЖИВАНИЯ ВЫСОКОТЕХНОЛОГИЧНОЙ ПРОДУКЦИИ (НА ПРИМЕРЕ ВЕРТОЛЕТОСТРОЕНИЯ)
Creators: name: КАЛАЧАНОВ В.Д.
name: МОКРОУСОВА А.И.
Publisher: name: Инновации и инвестиции
Year: 2020
Subjects: ВЕРТОЛЕТНАЯ ТЕХНИКА
ПОСЛЕПРОДАЖНОЕ ОБСЛУЖИВАНИЕ
КЛИЕНТООРИЕНТИРОВАННОСТЬ СЕРВИСА
ИНТЕГРИРОВАННЫЕ УСЛУГИ
РЕМОНТНОЕ ПРОИЗВОДСТВО
ИНФОРМАЦИОННАЯ ПОДДЕРЖКА
HELICOPTER EQUIPMENT
AFTER-SALES SERVICE
CUSTOMER-FOCUSED SERVICE
INTEGRATED SERVICES
REPAIR PRODUCTION
INFORMATION SUPPORT

description: Рассматриваются ключевые аспекты современной стратегии организации сервиса вертолетной техники АО «Вертолеты России», учитывающей передовые практики ведущих мировых производителей вертолетов. Отмечается, что послепродажное обслуживание вертолетной техники-значимая компонента выручки холдинга, важнейшее направление бизнеса (в том числе, и у зарубежных производителей: Airbus Helicopters,Boing, Sikorsky и др.).Ориентирами развития сервиса в сфере вертолетостроения является разработка клиентоориентированных программ в формате интегрированного комплекса услуг по сопровождению процессов продаж и эксплуатации техники; оптимизация качественных и стоимостных характеристик пакета сервисных предложений, оперативность их выполнения на основе совершенствования организации ремонтного производства и внедрения современных информационных технологий.
Brownian regime of finite-N corrections to particle motion in the XY hamiltonian mean field model
Creators: name: Ribeiro, Bruno V
name: Amato, Marco A
name: Elskens, Yves
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the dynamics of the N-particle system evolving in the XY hamiltonian mean field (HMF) model for a repulsive potential, when no phase transition occurs. Starting from a homogeneous distribution, particles evolve in a mean field created by the interaction with all others. This interaction does not change the homogeneous state of the system, and particle motion is approximately ballistic with small corrections. For initial particle data approaching a waterbag, it is explicitly proved that corrections to the ballistic velocities are in the form of independent brownian noises over a time scale diverging not slower than $N^{2/5}$ as $N \to \infty$, which proves the propagation of molecular chaos. Molecular dynamics simulations of the XY-HMF model confirm our analytical findings.
description: XIV Latin American Workshop on Nonlinear Phenomena (Cartagena, Colombia, Sep. 2015) Keywords : deterministic chaos, stochasticity, mean-field models, propagation of chaos, asymptotic independence, brownian limit, finite N noise, long-range system, hamiltonian dynamics
Symmetry breaking and anomalous conductivity in a double moiré superlattice
Creators: name: Li, Yuhao
name: Xue, Minmin
name: Fan, Hua
name: Gao, Cun-Fa
name: Shi, Yan
name: Liu, Yang
name: Watanabe, K.
name: Taniguchi, T.
name: Zhao, Yue
name: Wu, Fengcheng
name: Wang, Xinran
name: Shi, Yi
name: Guo, Wanlin
name: Zhang, Zhuhua
name: Fei, Zaiyao
name: Li, Jiangyu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A double moiré superlattice can be realized by stacking three layers of atomically thin two-dimensional materials with designer interlayer twisting or lattice mismatches. In this novel structure, atomic reconstruction of constituent layers could introduce significant modifications to the lattice symmetry and electronic structure at small twist angles. Here, we employ conductive atomic force microscopy (cAFM) to investigate symmetry breaking and local electrical properties in twisted trilayer graphene. We observe clear double moiré superlattices with two distinct moire periods all over the sample. At neighboring domains of the large moiré, the current exhibit either two- or six-fold rotational symmetry, indicating delicate symmetry breaking beyond the rigid model. Moreover, an anomalous current appears at the 'A-A' stacking site of the larger moiré, contradictory to previous observations on twisted bilayer graphene. Both behaviors can be understood by atomic reconstruction, and we also show that the cAFM signal of twisted graphene samples is dominated by the tip-graphene contact resistance that maps the local work function of twisted graphene and the metallic tip qualitatively. Our results unveil cAFM is an effective probe for visualizing atomic reconstruction and symmetry breaking in novel moiré superlattices, which could provide new insights for exploring and manipulating more exotic quantum states based on twisted van der Waals heterostructures.
Complex fixed points of the non-Hermitian Kondo model in a Luttinger liquid
Creators: name: Han, SangEun
name: Schultz, Daniel J.
name: Kim, Yong Baek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Non-Hermitian physics in open quantum many-body systems provides novel opportunities for the discovery of exotic quantum phenomena unexpected in Hermitian systems. A previous study of the non-Hermitian Kondo problem in ultracold atoms reports reversion of renormalization group flows which violates the $g$ theorem and produces an unusual quantum phase transition. In this work, we study the effect of electron-electron interactions by considering the non-Hermitian Kondo problem in a Luttinger liquid. By performing a perturbative renormalization group analysis to two-loop order, we find that the interplay between non-Hermitian Kondo couplings and electron-electron interactions can produce a pair of complex fixed points. Complex fixed points have often been discussed in an attempt to understand the extremely long correlation length of Hermitian systems with weakly first-order transitions. Here, we show that complex fixed points arise naturally and can be physically realized in open quantum systems. We discuss consequences of the complex fixed points and future directions.
description: 7+5 pages, 3 figures, 1 table
Lepton flavor violation, lepton $(g-2)_{μ,\,e}$ and electron EDM in the modular symmetry
Creators: name: Kobayashi, Tatsuo
name: Otsuka, Hajime
name: Tanimoto, Morimitsu
name: Yamamoto, Kei
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the lepton flavor violation (LFV), the leptonic magnetic moments $(g-2)_{μ,\,e} $ and the electric dipole moment (EDM) of the electron in the Standard-Model Effective Field Theory with the $Γ_N$ modular flavor symmetry. We employ the stringy Ansatz on coupling structure that 4-point couplings of matter fields are written by a product of 3-point couplings of matter fields. We take the level 3 finite modular group, $Γ_3$ for the flavor symmetry, and discuss the dipole operators at nearby fixed point $τ=i$, where observed lepton masses and mixing angles are well reproduced. Suppose the anomaly of the anomalous magnetic moment of the muon to be evidence of the new physics (NP), we have related it with $(g-2)_{e}$, LFV decays, and the electron EDM. It is found that the NP contribution to $(g-2)_{e}$ is proportional to the lepton masses squared likewise the naive scaling. We also discuss the correlations among the LFV processes $μ\to eγ$, $τ\to μγ$ and $τ\to eγ$, which are testable in the future. The electron EDM requires the tiny imaginary part of the relevant Wilson coefficient in the basis of real positive charged lepton masses, which is related to the $μ\to eγ$ transition in our framework.
description: 33 pages, references added
A variational approach to the liquid-vapor phase transition for hardcore ions in the bulk and in nanopores
Creators: name: Loubet, Bastien
name: Manghi, Manoel
name: Palmeri, John
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We employ a field-theoretical variational approach to study the behavior of ionic solutions in the grand canonical ensemble. To describe properly the hardcore interactions between ions, we use a cutoff in Fourier space for the electrostatic contribution of the grand potential and the Carnahan-Starling equation of state with a modified chemical potential for the pressure one. We first calibrate our method by comparing its predictions at room temperature with Monte Carlo results for excess chemical potential and energy. We then validate our approach in the bulk phase by describing the classical "ionic liquid-vapor" phase transition induced by ionic correlations at low temperature, before applying it to electrolytes at room temperature confined to nanopores embedded in a low dielectric medium and coupled to an external reservoir of ions. The ionic concentration in the nanopore is then correctly described from very low bulk concentrations, where dielectric exclusion shifts the transition up to room temperature for sufficiently tight nanopores, to high concentrations where hardcore interactions dominate which, as expected, modify only slightly this ionic "capillary evaporation".
Home-to-school pedestrian mobility GPS data from a citizen science experiment in the Barcelona area
Creators: name: Larroya, Ferran
name: Díaz, Ofelia
name: Segarra, Oleguer
name: Simón, Pol Colomer
name: Ferré, Salva
name: Moro, Esteban
name: Perelló, Josep
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The analysis of pedestrian GPS datasets is fundamental to further advance on the study and the design of walkable cities. The highest resolution GPS data can characterize micro-mobility patterns and pedestrians' micro-motives in relation to a small-scale urban context. Purposed-based recurrent mobility data inside people's neighborhoods is an important source in these sorts of studies. However, micro-mobility around people's homes is generally unavailable, and if data exists, it is generally not shareable often due to privacy issues. Citizen science and its public involvement practices in scientific research are valid options to circumvent these challenges and provide meaningful datasets for walkable cities. The study presents GPS records from single-day home-to-school pedestrian mobility of 10 schools in the Barcelona Metropolitan area (Spain). The research provides pedestrian mobility from an age-homogeneous group of people. The study shares processed records with specific filtering, cleaning, and interpolation procedures that can facilitate and accelerate data usage. Citizen science practices during the whole research process are reported to offer a complete perspective of the data collected.
Point-contact spectroscopy of superconductors in the nonequilibrium state
Creators: name: Yanson, I. K.
name: Rybal'chenko, L. F.
name: Bobrov, N. L.
name: Fisun, V. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A phase transition of the region of the superconductor near the point contact into a new nonequi- librium state at the critical density of nonequilibriumquasiparticles is observed.
description: 3 pages, 3 figures
The upgraded low-background germanium counting facility Gator for high-sensitivity $γ$-ray spectrometry
Creators: name: Araujo, G. R.
name: Baudis, L.
name: Biondi, Y.
name: Bismark, A.
name: Galloway, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We describe the upgrade and performance of the high-purity germanium counting facility Gator, which is dedicated to low-background $γ$-ray spectrometry. Gator is operated at the Gran Sasso Underground Laboratory in Italy, at an average depth of 3600 meter water equivalent, and employed for material screening and selection in ultra-low background, rare-event search experiments in astroparticle physics. The detector is equipped with a passive shield made of layers of copper, lead and polyethylene, and the sample cavity is purged with gaseous nitrogen maintained at positive pressure for radon suppression. After upgrading its enclosure, the background rate is (82.0$\pm$0.7) counts/(kg$\cdot$day) in the energy region 100 keV to 2700 keV, a 20% reduction compared to the previously reported rate. We show the stability of various operation parameters as a function of time. We also summarize the sample analysis procedure, and demonstrate Gator's sensitivity by examining one material sample, a candidate photosensor for the DARWIN experiment.
Investigation of the role of the platelet cytoskeleton in regulating the interaction between glycoprotein Ib/V/IX and von Willebrand factor
Creators: name: Mistry., Nayna
Publisher: name: Monash University
Year: 2021

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