cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Triplet character of 2D-fermion dimers arising from $s$-wave attraction via spin-orbit coupling and Zeeman splitting
Creators: name: Ebling, Ulrich
name: Zülicke, Ulrich
name: Brand, Joachim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We theoretically study spin-$1/2$ fermions confined to two spatial dimensions and experiencing isotropic short-range attraction in the presence of both spin-orbit coupling and Zeeman spin splitting - a prototypical system for developing topological superfluidity in the many-body sector. Exact solutions for two-particle bound states are found to have a triplet contribution that dominates over the singlet part in an extended region of parameter space where the combined Zeeman- and center-of-mass-motion-induced spin-splitting energy is large. The triplet character of dimers is purest in the regime of weak $s$-wave interaction strength. Center-of-mass momentum is one of the parameters determining the existence of bound states, which we map out for both two- and one-dimensional types of spin-orbit coupling. Distinctive features emerging in the orbital part of the bound-state wave function, including but not limited to its $p$-wave character, provide observable signatures of unconventional pairing.
description: 29 pages, 9 figures, submission to SciPost, v2: extended discussion of methods and new results
Earth as a transducer for axion dark-matter detection
Creators: name: Arza, Ariel
name: Fedderke, Michael A.
name: Graham, Peter W.
name: Kimball, Derek F. Jackson
name: Kalia, Saarik
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We demonstrate that ultralight axion dark matter with a coupling to photons induces an oscillating global terrestrial magnetic field signal in the presence of the background geomagnetic field of the Earth. This signal is similar in structure to that of dark-photon dark matter that was recently pointed out and searched for in [arXiv:2106.00022] and [arXiv:2108.08852]. It has a global vectorial pattern fixed by the Earth's geomagnetic field, is temporally coherent on long time scales, and has a frequency set by the axion mass $m_a$. In this work, we both compute the detailed signal pattern, and undertake a search for this signal in magnetometer network data maintained by the SuperMAG Collaboration. Our analysis identifies no strong evidence for an axion dark-matter signal in the axion mass range $2\times10^{-18}\text{eV} \lesssim m_a \lesssim 7\times10^{-17}\text{eV}$. Assuming the axion is all of the dark matter, we place constraints on the axion-photon coupling $g_{aγ}$ in the same mass range; at their strongest, for masses $3\times 10^{-17}\text{eV} \lesssim m_a \lesssim 4\times 10^{-17}\text{eV}$, these constraints are comparable to those obtained by the CAST helioscope.
description: 24 pages, 1 figure. Published version
Characterizing the WASP-4 system with TESS and radial velocity data: Constraints on the cause of the hot Jupiter's changing orbit and evidence of an outer planet
Creators: name: Turner, Jake D.
name: Flagg, Laura
name: Ridden-Harper, Andrew
name: Jayawardhana, Ray
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Orbital dynamics provide valuable insights into the evolution and diversity of exoplanetary systems. Currently, only one hot Jupiter, WASP-12b, is confirmed to have a decaying orbit. Another, WASP-4b, exhibits hints of a changing orbital period that could be caused by orbital decay, apsidal precession, or the acceleration of the system towards the Earth. We have analyzed all data sectors from NASA's Transiting Exoplanet Survey Satellite together with all radial velocity (RV) and transit data in the literature to characterize WASP-4b's orbit. Our analysis shows that the full RV data set is consistent with no acceleration towards the Earth. Instead, we find evidence of a possible additional planet in the WASP-4 system, with an orbital period of ~7000 days and $M_{c}sin(i)$ of $5.47^{+0.44}_{-0.43} M_{Jup}$. Additionally, we find that the transit timing variations of all of the WASP-4b transits cannot be explained by the second planet but can be explained with either a decaying orbit or apsidal precession, with a slight preference for orbital decay. Assuming the decay model is correct, we find an updated period of 1.338231587$\pm$0.000000022 days, a decay rate of -7.33$\pm$0.71 msec/year, and an orbital decay timescale of 15.77$\pm$1.57 Myr. If the observed decay results from tidal dissipation, we derive a modified tidal quality factor of $Q^{'}_{*}$ = 5.1$\pm$0.9$\times10^4$, which is an order of magnitude lower than values derived for other hot Jupiter systems. However, more observations are needed to determine conclusively the cause of WASP-4b's changing orbit and confirm the existence of an outer companion.
description: 12 pages (main paper), 7 figures, 6 tables, 3 Appendices (16 pages, 13 figures, 5 tables), Accepted for publication in AJ (December 17, 2021). arXiv admin note: substantial text overlap with arXiv:2012.02211
Localizing flares to understand stellar magnetic fields and space weather in exo-systems
Creators: name: Ilin, Ekaterina
name: Poppenhäger, Katja
name: Alvarado-Gómez, Julián D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Stars are uniform spheres, but only to first order. The way in which stellar rotation and magnetism break this symmetry places important observational constraints on stellar magnetic fields, and factors in the assessment of the impact of stellar activity on exoplanet atmospheres. The spatial distribution of flares on the solar surface is well known to be non-uniform, but elusive on other stars. We briefly review the techniques available to recover the loci of stellar flares, and highlight a new method that enables systematic flare localization directly from optical light curves. We provide an estimate of the number of flares we may be able to localize with the Transiting Exoplanet Survey Satellite (TESS), and show that it is consistent with the results obtained from the first full sky scan of the mission. We suggest that non-uniform flare latitude distributions need to be taken into account in accurate assessments of exoplanet habitability.
description: 6 pages, 2 figures. Proceedings of the 2021 XMM-Newton workshop "A high-energy view of exoplanets and their environments" accepted to Astronomische Nachrichten
Supplementary document for Surpassing differential synthetic wavelength of dual-wavelength digital holography by optimizing the search for unwrapping coefficient - 7444127.pdf
Creators: name: Mingguang, Shan
name: Jia, Yuanyuan
name: Ding, Zhenhua
name: Zhi, Zhong
name: Yu, Lei
name: Liu, Bin
name: Wang, lijing
name: liu, lei
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplementary file
Self-confinement of low-energy cosmic rays around supernova remnants
Creators: name: Jacobs, Hanno
name: Mertsch, Philipp
name: Phan, Vo Hong Minh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Supernova remnants have long been considered as a promising candidate for sources of Galactic cosmic rays. However, modelling cosmic-ray transport around these sources is complicated by the fact that the overdensity of cosmic rays close to their acceleration site can lead to self-confinement, that is the generation of turbulence upon which these particles scatter. Such a highly non-linear problem can be addressed by numerically solving the coupled differential equations describing the evolution in space and time of the escaping particles and of the turbulent plasma waves. In this work, we focus essentially on the propagation of cosmic rays from supernova remnants in the warm ionized and warm neutral phases of the interstellar medium and propose an extended framework to take into account also the effect of energy loss relevant for cosmic rays of energy below 10 GeV. Interestingly, the diffusion coefficient of low-energy cosmic rays could be suppressed by up to 2 orders of magnitude for several tens of kiloyears after the escape from the shock. The cosmic-ray spectrum outside the supernova remnant flattens below 1 GeV at a sufficiently late time reminiscient of the spectral behaviour observed by Voyager. We also find the grammage accumulated around the source to be non-negligible, with important implications for precision fitting of the cosmic-ray spectra.
description: 20 pages, 5 figures
Anomalous ambipolar transport in depleted GaAs nanowires
Creators: name: Hijazi, H.
name: Paget, D.
name: Rowe, A C. H.
name: Monier, G.
name: Lahlil, K.
name: Gil, E.
name: Trassoudaine, A.
name: Cadiz, F.
name: André, Y.
name: Robert-Goumet, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have used a polarized microluminescence technique to investigate photocarrier charge and spin transport in n-type depleted GaAs nanowires ($ \approx 10^{17}$ cm$^{-3}$ doping level). At 6K, a long-distance tail appears in the luminescence spatial profile, indicative of charge and spin transport, only limited by the length of the NW. This tail is independent on excitation power and temperature. Using a self-consistent calculation based on the drift-diffusion and Poisson equations as well as on photocarrier statistics (Van Roosbroeck model), it is found that this tail is due to photocarrier drift in an internal electric field nearly two orders of magnitude larger than electric fields predicted by the usual ambipolar model. This large electric field appears because of two effects. Firstly, for transport in the spatial fluctuations of the conduction band minimum and valence band maximum, the electron mobility is activated by the internal electric field. This implies, in a counter intuitive way, that the spatial fluctuations favor long distance transport. Secondly, the range of carrier transport is further increased because of the finite NW length, an effect which plays a key role in one-dimensional systems.
First-principles phonon calculations for lattice dynamics, thermal expansion and lattice thermal conductivity of CoSi at high temperature region
Creators: name: Sk, Shamim
name: Pandey, Sudhir K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This study presents the first-principles phonon calculations to understand the experimental thermal expansion ($α(T)$) and lattice thermal conductivity ($κ_{L}$) of CoSi at high temperature region. Phonon dispersion is computed using finite displacement method and supercell approach by taking the equilibrium crystal structures obtained from DFT. The calculation of $α(T)$ is done under quasi-harmonic approximation. The $κ_{L}$ is calculated using first-principle anharmonic lattice dynamics calculations under single-mode relaxation time approximation. Calculated $α(T)$ in the temperature range $0-1300$ K gives the good match with existing experimental data. The calculated value of $κ_{L}$ ($\sim$8.0 W/m-K) at 300 K is found to be in good agreement with the experimental value of $\sim$8.3 W/m-K. The temperature dependent of phonon lifetime due to phonon-phonon interaction is calculated to understand the behaviour of $κ_{L}$. Present study suggests that ground state phonon dispersion obtained from DFT based methods gives reasonably good explanation of experimental $α(T)$ and $κ_{L}$.
Symplectic quantization of multi-field Generalized Proca electrodynamics
Creators: name: Díez, Verónica Errasti
name: Marinkovic, Marina Krstic
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explicitly carry out the symplectic quantization of a family of multi-field Generalized Proca (GP) electrodynamics theories. In the process, we provide an independent derivation of the so-called secondary constraint enforcing relations -- consistency conditions that significantly restrict the allowed interactions in multi-field settings already at the classical level. Additionally, we unveil the existence of quantum consistency conditions, which apply in both single- and multi-field GP scenarios. Our newly found conditions imply that not all classically well-defined (multi-)GP theories are amenable to quantization. The extension of our results to the most general multi-GP class is conceptually straightforward, albeit algebraically cumbersome.
description: 22 pages, 1 table. v2: Introduction extended, references added, minor rewriting; journal version; 23 pages, 1 table
Mean field theory of yielding under oscillatory shear
Creators: name: Parley, Jack T.
name: Sastry, Srikanth
name: Sollich, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study a mean field elastoplastic model, embedded within a disordered landscape of local yield barriers, to shed light on the behaviour of athermal amorphous solids subject to oscillatory shear. We show that the model presents a genuine dynamical transition between an elastic and a yielded state, and qualitatively reproduces the dependence on the initial degree of annealing found in particle simulations. For initial conditions prepared below the analytically derived threshold energy, we observe a non-trivial, non-monotonic approach to the yielded state. The timescale diverges as one approaches the yielding point from above, which we identify with the fatigue limit. We finally discuss the connections to brittle yielding under uniform shear.
description: 23 pages, 21 figures (version accepted for publication in Phys. Rev. Lett.)
The universal model of strong coupling at the nonlinear parametric resonance in open cavity-QED systems
Creators: name: Tokman, Mikhail
name: Erukhimova, Maria
name: Chen, Qianfan
name: Belyanin, Alexey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many molecular, quantum-dot, and optomechanical nanocavity-QED systems demonstrate strong nonlinear interactions between electrons, photons, and phonon (vibrational) modes. We show that such systems can be described by a universal model in the vicinity of the nonlinear parametric resonance involving all three degrees of freedom. We solve the nonperturbative quantum dynamics in the strong coupling regime of the nonlinear resonance, taking into account quantization, dissipation, and fluctuations of all fields. We find analytic solutions for quantum states in the rotating wave approximation which demonstrate tripartite quantum entanglement once the strong coupling regime is reached. We show how the strong coupling at the nonlinear resonance modifies photon emission and vibrational spectra, and how the observed spectra can be used to extract information about relaxation rates and the nonlinear coupling strength in specific systems.
description: 40 pages, 6 figures
Investigation of the cryogenic scintillation of pure and doped sodium-iodine
Creators: name: Clark, M.
name: Froborg, F.
name: Di Stefano, P. C. F.
name: Calaprice, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We have studied the scintillation of pure and doped sodium iodide crystals handled in low humidity conditions under external $α$ and $γ$ excitation from room temperature down to 4K. The light yield of pure sodium iodide was seen to increase at low temperatures by a factor 30 compared to room temperature, up to a maximum of 40 photons/keV under $γ$ excitation at 60K, stabilizing to 30 photons/keV at lower temperatures. Thallium doped sodium iodide fluctuates by 20% around the room temperature value, stabilizing at 40 photons/keV at low temperature. $α/ γ$ quenching factor stabilizes at roughly 0.7 for both materials beneath 50K. Time constants of both materials slow greatly at low temperature, reaching tens of microseconds. Cryogenic applications of these materials are complexified by their mechanical fragility and hygroscopicity.
description: 16 pages, 8 figures
Co-interacting dark matter and conformally coupled light scalars
Creators: name: Brax, Philippe
name: van de Bruck, Carsten
name: Trojanowski, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The increasing observational pressure on the standard cosmological model motivates analyses going beyond the paradigm of the collision-less cold dark matter (DM). Since the only clear evidence for the existence of DM is based on gravitational interactions, it seems particularly fitting to study them in this sector where extensions to the standard model can be naturally introduced. A promising avenue can be obtained using modifications of the space-time metric coupled to DM and induced by the presence of a new ultra-light scalar field $ϕ$. The $ϕ$ field can contribute to the DM density and can couple all the matter species universally, including additional heavy DM particles. We present a simple two-component DM model employing derivative conformal interactions between the two DM species. This can simultaneously: 1) guarantee the necessary symmetries to stabilize the dark species, 2) predict a subdominant thermal relic density of the heavy DM component, and 3) alleviate small-scale structure tensions of the cold DM scenario due to the possible co-interactions in the dark sector. The scenario is highly predictive with future observational prospects ranging from the Large Hadron Collider (LHC) to gravitational-wave searches, and can be generalized to more rich and realistic dark sector models.
description: 17 pages, 4 figures, v2: references and minor discussion added, version published in PRD
Quantum transport in nonlinear Rudner-Levitov models
Creators: name: Du, Lei
name: Wu, Jin-Hui
name: Artoni, M.
name: La Rocca, G. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum transport in a class of nonlinear extensions of the Rudner-Levitov model is numerically studied in this paper. We show that the quantization of the mean displacement, which embodies the quantum coherence and the topological characteristics of the model, is markedly modified by nonlinearities. Peculiar effects such as a "trivial-nontrivial" transition and unidirectional long-range quantum transport are observed. These phenomena can be understood on the basis of the dynamic behavior of the effective hopping terms, which are time and position dependent, containing contributions of both the linear and nonlinear couplings.d nonlinear couplings.
description: 8 pages, 7 figures
Design of growth-coupled measurements of transcription factor function
Creators: name: d'Oelsnitz, Simon
name: Taghon, Geoffrey
name: Cortade, Dana
name: Kelly, Peter
name: Ross, David
Publisher: name: Zenodo
Year: 2024

description: This article presents a proposal for measuring the function of transcription factors (TFs) using a growth-coupled assay integrated with a gene circuit. This innovative approach links TF activity to bacterial cell growth, allowing for quantitative assessments of TF function across various families, starting with RamR, Lacl, and TetR. The methodology involves using plasmids designed for specific TFs, employing a range of calibration variants to span their activity dynamic range. The project aims to generate comprehensive datasets that will enhance understanding of TF repression mechanisms and the impact of mutations on their function, ultimately facilitating advancements in synthetic biology and therapeutic applications. The research is supported by a collaborative team from institutions such as NIST and Harvard Medical School, and it outlines a structured plan for both pilot and large-scale data collection efforts to expand the characterization of TFs across different families.
A scalable preconditioning framework for stabilized contact mechanics with hydraulically active fractures
Creators: name: Franceschini, Andrea
name: Gazzola, Laura
name: Ferronato, Massimiliano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A preconditioning framework for the coupled problem of frictional contact mechanics and fluid flow in the fracture network is presented. The porous medium is discretized using low-order continuous finite elements, with cell-centered Lagrange multipliers and pressure unknowns used to impose the constraints and solve the fluid flow in the fractures, respectively. This formulation does not require any interpolation between different fields, but is not uniformly inf-sup stable and requires a stabilization. For the resulting 3 x 3 block Jacobian matrix, we design scalable preconditioning strategies, based on the physically-informed block partitioning of the unknowns and state-of-the-art multigrid preconditioners. The key idea is to restrict the system to a single-physics problem, approximately solve it by an inner algebraic multigrid approach, and finally prolong it back to the fully-coupled problem. Two different techniques are presented, analyzed and compared by changing the ordering of the restrictions. Numerical results illustrate the algorithmic scalability, the impact of the relative number of fracture-based unknowns, and the performance on a real-world problem.
description: 25 pages, 11 figures, 7 tables
Response of a reptilian ecosystem engineer to large-scale dune construction: implications for coastal wildlife
Creators: name: Martin, Scott A.
Publisher: name: Maryland Shared Open Access Repository
Year: 2016

description: (M.S.) -- Towson University, 2016
description: Climate change-induced sea-level rise is a major threat to coastal habitat worldwide. Current management aimed at reducing beach erosion often focuses on protecting human structures, and research on the impacts of management on wildlife is lacking. I evaluated how a reptilian ecosystem engineer, the Gopher Tortoise (Gopherus polyphemus), colonized humanconstructed dunes along coastal scrub at the Merritt Island National Wildlife Refuge in Central Florida. Over two years I surveyed tortoise populations along natural dunes and two constructed dunes (completed in 2012 and in 2014) and estimated tortoise density each summer and winter. My models indicate that tortoise density along the 2014 dune was similar to that of the natural dunes (means ranging from 0.9 to 9.66 tortoises per hectare), and density peaked at a mean of 36 tortoises per hectare along the 2012 constructed dune. Overall, Gopher Tortoises rapidly colonized constructed dunes, and dune construction may represent effective management to reduce habitat loss for this species.
description: http://library.towson.edu/cdm/ref/collection/etd/id/49713
L’istruzione matematica secondaria e tecnica da Boncompagni a Casati 1848-1859: il ruolo della Società d’Istruzione e di Educazione
Creators: name: Pizzarelli, Chiara
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2014

description: In this paper we present the internal dynamics which led to the elaboration of the Casati law (1859) in the Sardinia Kingdom from 1848 (Boncompagni law) onwards. Through the analysis of the pedagogic periodicals and of the sittings of the Superior Council of Education we show the role of the Società d’Istruzione e di Educazione (1849-1859). Thanks to the competence and the political authority of some members – many of them pedagogues, professors of the University of Turin and components of the Parliament – the Society sustained a new pedagogical approach and promoted scientific disciplines, by open debates about programs, texts and comparisons with high-level technical institutions abroad. The purpose is to cast new light on the influences of this Society on mathematical education of secondary and technical schools and to provide details on the protagonists involved in the draft of the laws.

Key words: Mathematical Education, Superior Council of Public Education, Scientific schools
description: Rivista di Storia dell'Università di Torino, V. 2, N. 2 (2013)
EPPS21: A global QCD analysis of nuclear PDFs
Creators: name: Eskola, Kari J.
name: Paakkinen, Petja
name: Paukkunen, Hannu
name: Salgado, Carlos A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an updated global analysis of collinearly factorized nuclear parton distribution functions (PDFs) at next-to-leading order in perturbative QCD. In comparison to our previous fit, EPPS16, the present analysis includes more data from proton-lead collisions at the Large Hadron Collider: 5TeV double-differential CMS dijet and LHCb D-meson data, as well as 8TeV CMS W$^\pm$ data. These new data lead to significantly better-constrained gluon distributions at small and intermediate values of the momentum fraction $x$, confirming the presence of shadowing and antishadowing for gluons in large nuclei. In addition, we include Jefferson Lab measurements of deeply inelastic scattering which probe nuclear PDFs at large $x$ and low virtualities. For the first time within the Hessian framework, we now also explore the uncertainties of nuclear PDFs due to the errors in the baseline proton PDFs. We release the results of our analysis as a new public parametrization of nuclear PDFs called EPPS21.
description: Minor changes to match the published version
Il carteggio fra Giovanni Vailati e Vito Volterra
Creators: name: De Zan, Mauro
name: Pizzarelli, Chiara
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2014

description: The correspondence between Giovanni Vailati and Vito Volterra, composed of about a hundred of letters from 1896 to 1907, reveals not only the dynamics of reciprocal collaboration in preparing and in reviewing their works and inaugural discourses, but also the effort of Volterra at helping Vailati obtaining a lecturing post in the field of the History of Mathematics. Furthermore this critical edition provides information about the international contacts of the correspondents and their participation to conferences. It also shows the richness of topics from different disciplines and the common conception of knowledge’s unity.

Key words: History of Mechanics, Mathematical Applications, Travels.
description: Rivista di Storia dell'Università di Torino, V. 2, N. 2 (2013)
Torino, 1593: Motivi dell’opposizione universitaria ai gesuiti nel contesto degli antagonismi europei del tempo
Creators: name: Omodeo, Pietro Daniel
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2014

description: This paper deals with an unpublished Renaissance document preserved in the Archives of Turin, relevant to the history of the local university. It is an anonymous report, written in 1593, relative to the reasons for opposing the Jesuits’ attempt to obtain the teaching of philosophy, and to transfer this teaching from the university to their college. The pedagogical, cultural, and political arguments brought forward by the anonymous author of the document are here considered against the background of the European expansion of the Jesuit Order and of its schools. The case of Turin is compared to polemics that affected the Universities of Paris and Padua, involving academic, civil and religious authorities. Thus, a wider overview of the conflicts between traditional universities and the emerging Jesuit educational system is offered. Moreover, the Turin quarrel helps pinpoint the irreconcilability between Jesuit Scholasticism and late Humanism as an important aspect of these contrasts. A transcription of the 1593 document is added as an appendix.

Keywords:  Renaissance, Jesuits, Humanism
description: Rivista di Storia dell'Università di Torino, V. 3, N. 1 (2014)
$B\to D \ell ν_\ell$ form factors beyond leading power and extraction of $|V_{cb}|$ and $R(D)$
Creators: name: Gao, Jing
name: Huber, Tobias
name: Ji, Yao
name: Wang, Chao
name: Wang, Yu-Ming
name: Wei, Yan-Bing
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the subleading-power corrections to the exclusive $B\to D \ell ν_\ell$ form factors at ${\cal O} (α_s^0)$ in the light-cone sum rules (LCSR) framework by including the two- and three-particle higher-twist contributions from the $B$-meson light-cone distribution amplitudes up to the twist-six accuracy, by taking into account the subleading terms in expanding the hard-collinear charm-quark propagator, and by evaluating the hadronic matrix element of the subleading effective current $\bar q \, γ_μ \, i \not\!\!{D}_\perp / (2 \, m_b) \, h_v$. Employing further the available leading-power results for the semileptonic $B \to D$ form factors at the next-to-leading-logarithmic level and combining our improved LCSR predictions with the recent lattice determinations, we then carry out a comprehensive phenomenological analysis on the semi-leptonic $B\to D \ell ν_\ell$ decay. We extract $|V_{cb}| = \big( 40.2^{+0.6}_{-0.5} {\big |_{\rm th}}\,\, {}^{+1.4}_{-1.4} {\big |_{\rm exp}} \big)\times 10^{-3}$ ($|V_{cb}| = \big( 40.9^{+0.6}_{-0.5} {\big |_{\rm th}}\,\, {}^{+1.0}_{-1.0} {\big |_{\rm exp}} \big)\times 10^{-3}$) using the BaBar (Belle) experimental data, and particularly obtain for the gold-plated ratio $R(D) = 0.302\pm 0.003$.
description: 28 pages plus appendices and references, 6 figures; v2: matches published version
Existence, Stability and Dynamics of Monopole and Alice Ring Solutions in Anti-Ferromagnetic Spinor Condensates
Creators: name: Mithun, Thudiyangal
name: Carretero-González, R.
name: Charalampidis, E. G.
name: Hall, D. S.
name: Kevrekidis, P. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this work we study the existence, stability, and dynamics of select topological point and line defects in anti-ferromagnetic, polar phase, $F=1$ $^{23}$Na spinor condensates. Specifically, we leverage fixed-point and numerical continuation techniques in three spatial dimensions to identify solution families of monopole and Alice rings as the chemical potential (number of atoms) and trapping strengths are varied within intervals of realizable experimental parameters. We are able to follow the monopole from the linear limit of small atom number all the way to the Thomas-Fermi regime of large atom number. Additionally, and importantly, our studies reveal the existence of {\em two} Alice ring solution branches, corresponding to, relatively, smaller and larger ring radii, that bifurcate from each other in a saddle-center bifurcation as the chemical potential is varied. We find that the monopole solution is always dynamically unstable in the regimes considered. In contrast, we find that the larger Alice ring is indeed stable close to the bifurcation point until it destabilizes from an oscillatory instability bubble for a larger value of the chemical potential. We also report on the possibility of dramatically reducing, yet not completely eliminating, the instability rates for the smaller Alice ring by varying the trapping strengths. The dynamical evolution of the different unstable waveforms is also probed via direct numerical simulations.
description: 17 pages, 21 figures
BEAT: Blockchain-Enabled Accountable and Transparent Infrastructure Sharing in 6G and Beyond
Creators: name: Faisal, Tooba
name: Dohler, Mischa
name: Mangiante, Simone
name: Lopez, Diego R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: It is widely expected that future networks of 6G and beyond will deliver on the unachieved goals set by 5G. Technologies such as Internet of Skills and Industry 4.0 will become stable and viable, as a direct consequence of networks that offer sustained and reliable mobile performance levels. The primary challenges for future technologies are not just low-latency and high-bandwidth. The more critical problem Mobile Service Providers (MSPs) will face will be in balancing the inflated demands of network connections and customers' trust in the network service, that is, being able to interconnect billions of unique devices while adhering to the agreed terms of Service Level Agreements (SLAs). To meet these targets, it is self-evident that MSPs cannot operate in a solitary environment. They must enable cooperation among themselves in a manner that ensures trust, both between themselves as well as with customers. In this study, we present the BEAT (Blockchain-Enabled Accountable and Transparent) Infrastructure Sharing architecture. BEAT exploits the inherent properties of permissioned type of distributed ledger technology (i.e., permissioned distributed ledgers) to deliver on accountability and transparency metrics whenever infrastructure needs to be shared between providers. We also propose a lightweight method that enables device-level accountability. BEAT has been designed to be deployable directly as only minor software upgrades to network devices such as routers. Our simulations on a resource-limited device show that BEAT adds only a few seconds of overhead processing time -- with the latest state-of-the-art network devices, we can reasonably anticipate much lower overheads.
description: arXiv admin note: text overlap with arXiv:2107.04328
Cluster structure of superconducting phase and the nature of peaks in the doping dependences of the London penetration depth in iron pnictides
Creators: name: Mitsen, K. V.
name: Ivanenko, O. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The mechanism of formation of dome-like phase diagrams and the features of magnetic field penetration in iron pnictides with hetero- and isovalent doping are considered within the framework of the previously proposed model, which assumes the local character of doping and the cluster structure of resulted superconducting phase. It is shown that the proposed model, despite its simplicity and neglect of the features of the electronic structure, makes it possible not only to accurately calculate the positions of superconducting domes on the phase diagrams of specific HTSC compounds, but also to explain the nature and position of sharp peaks in the London penetration depth depending on the doping level.
description: 13 pages, 6 figures
Il carteggio fra Giovanni Virginio Schiaparelli e Quintino Sella
Creators: name: Pizzarelli, Chiara
name: Roero, Clara Silvia
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2016

description: Abstract

One of the most important correspondence of the Risorgimento and unification period is that exchanged between Giovanni Virginio Schiaparelli (1835-1910) and Quintino Sella (1827-1884) not only for scientific and political stature of the two protagonists, but also for the opportunity it offers to discover new aspects and perspectives on histories of mathematics, astronomy, sciences and society. They concern, for example, the Turin and national university context, the cultural policies related to the development of research and improvement of scientific teachings, what kind of organization to prepare for meteorology and what instruments to equip observatories. The correspondence also reveals the ideals and aspirations of the two friends, as well as the difficulties and obstacles that they were able to overcome with determination, tenacity and strong sense of ethics.

Keywords

Scientific correspondence, Schiaparelli Giovanni Virginio, Sella Quintino, Turin and Berlin universities, Pulkova observatory
description: Rivista di Storia dell'Università di Torino, V. 4, N. 1 (2015)
Università e magistrature sanitarie: il progetto di Michele Buniva nel Piemonte napoleonico
Creators: name: Carpanetto, Dino
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2014

description: Michele Buniva (1761-1834) is a prominent scientist in different fields of medicine and science at a time when medical teaching was under revision and the ideas on public health inherited from the Societé royale de Médecine of Paris and the Medical Police were beginning to be put into effect. Buniva was practising physician, teacher in University of Turin and administrator of public health from the end of Ancient Regime and the Age of Napoleonic Empire. He treated the subject of vaccination in the context of his or her own special interest. The success of vaccination as protection against smallpox stimulated interest in the phenomenon of life protection and, although its use long preceded the scientific knowledge required for its analysis by modern methods, the phenomenon was one which perfectly lent itself to the methodical chains of reasoning which are so much a part of intellectual taste in Europe. The principal body were the Consiglio di Sanità, leaded by Buniva who carried particular authority in health fields of Piedmont. Buniva gave theoretical and practical lessons on smallpox to students at the University of Turin, which collaborated with him to the introduction of Jenner's vaccine to Piedmont in 1800-1814.

Keywords: University of Turin, Small-pox, Public health, Vaccination
description: Rivista di Storia dell'Università di Torino, V. 3, N. 1 (2014)
Da Studium conventuale a Studium generale. La scuola del convento di San Francesco di Chieri nel Quattrocento da scritture contabili minoritiche
Creators: name: Rosso, Paolo
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2014

description: This essay examines the contacts between the Studium conventualis of the franciscan convent in Chieri and the faculty of Theology of the University of Turin during the fifteenth century. Through the analysis of two account books of the convent of Chieri (1402-1430; 1472-1497) were investigated the composition of the community of Minors, the circulation of books in its various forms among the friars and the mutations of the Studium conventualis organization that followed the transfer to the University of Turin in Chieri (1427-1434). It was identified a significant expansion of the community of Minors and a remarkable articulation of teaching in it: several fratres who attended the conventual school graduated later at universities in the franciscan Province of Genova or, sometimes, in the theological faculty of Paris. The Minors of San Francesco in Chieri continued to play an important role in the intellectual formation of friars of the Custodia Pedemontis after the return of Studium generale in Turin.

Keywords

History of the Universities; Faculty of Theology; Conventual School; Conventual Libraries; Convent of San Francesco in Chieri; Franciscan economic thought
description: Rivista di Storia dell'Università di Torino, V. 3, N. 2 (2014)
Undergraduate Nano Ionospheric Temperature Explorer (UNITE) passive altitude control system
Creators: name: Fregozo, Jose
Publisher: name: Unknown
Year: 2018

description: The University of Southern Indiana's Engineering Department began its efforts to
conceive, design, build, and operate a spacecraft to be flown in Low Earth Orbit (LEO) after
NASA's Project Initiation Conference in September 2016. USI's student lead multidisciplinary
team embarked on an 18-month CubeSat project, fully funded through NASA's Undergraduate
Student Instrument Project (USIP), to deliver a flight-ready nanosatellite by March 15, 2018.
USI's CubeSat was dubbed the Undergraduate Nano Ionospheric Temperature Explorer
(UNITE), as its mission will primarily be conducted in the lower ionosphere, a region rarely
explored by spacecraft. The science objectives of the UNITE 3U CubeSat mission are to: 1)
conduct space weather measurements in the lower ionosphere using a Langmuir plasma probe, 2)
measure exterior and interior temperatures of the spacecraft for comparison to a thermal model,
and 3) track orbital decay of the spacecraft in the lower ionosphere and during final hours of reentry.
This senior design project entails the design and fabrication of an attitude determination
and control system, which will correctly orient the spacecraft to achieve its science objectives.
Complete mission success depends on the correct orientation of the science payload. Work
entails a design that uses aerodynamic, magnetic, and hysteresis environmental torques to
passively orient the spacecraft and dampen the angular velocities of the spacecraft. Orbital
simulations were performed to verify design.
Il carteggio fra Gilberto Govi, Antonio Favaro e Giovanni Virginio Schiaparelli per l’Edizione nazionale delle Opere di Galileo Galilei
Creators: name: Schettino, Edgive
name: Borrelli, Antonio
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2015

description: Our purpose in this work is that of showing the fundamental role played by Gilberto Govi and Giovanni Virginio Shiaparelli in the publication of the Edizione nazionale delle opere di Galileo Galilei conceived by Antonio Favaro and sponsored and financed by the recently founded Italian State. This role is revealed by the letters and documents here published for the first time. Both Govi and Schiaparelli sought to convince Favaro in providing an edition which should not be cumbered by an excess of erudition, and philological notes. They also suggested that parallel to the Edizione nazionale, addressed mainly to scholars and libraries, an economic edition should be published for a wider audience. But this suggestion was never realized.

Keywords: Gilberto Govi, Antonio Favaro, Giovanni Virginio Schiaparelli,

National Edition of Galileo’s works.
description: Rivista di Storia dell'Università di Torino, V. 3, N. 2 (2014)
Significant reduction in semiconductor interface resistance via interfacial atomic mixing
Creators: name: Song, Qichen
name: Zhou, Jiawei
name: Chen, Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The contact resistance between two dissimilar semiconductors is determined by the carrier transmission through their interface. Despite the ubiquitous presence of interfaces, quantitative simulation of charge transport across such interfaces is difficult, limiting the understanding of interfacial charge transport. This work employs Green's functions to study the charge transport across representative Si/Ge interfaces. For perfect interfaces, it is found that the transmittance is small and the contact resistance is high, not only because the mismatch of carrier pockets makes it hard to meet the momentum conservation requirement, but also because of the incompatible symmetries of the Bloch wave functions of the two sides. In contrast, atomic mixing at the interface increases the carrier transmittance as the interface roughness opens many nonspecular transmission channels, which greatly reduces the contact resistance compared with the perfect interface. Specifically, we show that disordered interfaces with certain symmetries create more nonspecular transmission. The insights from our study will benefit the future design of high-performance heterostructures with low contact resistance.
description: 13 pages, 10 figures
La Studiorum Auspicatio e le processioni della Regia Università di Torino nel XVIII secolo. Norme e rituale
Creators: name: Pennini, Andrea
Publisher: name: Rivista di Storia dell'Università di Torino
Year: 2015

description: The opening ceremony of the University is the main official rite of the Athenaeum still today. In the Early modern age, this ceremony consisted in a procession from the new building planned by Michelangelo Garove to the Cathedral and back. Almost similar to this one, in the Eighteenth Century there were other three processions: at the Annunciation (March 25), at the Assumption (August 15) and at the Nativity of the Theotokos (September 8). Furthermore, there were other celebrations: the graduation ceremonies, the Royal ceremonies and the annual public lesson of anatomy, studied by Dino Carpanetto. During the kingdoms of Victor Amadeus II and Charles Emmanuel III, four different editions of the Regie Costituzioni per l’Università regulated all the academic life. Through the analysis of these constitutions, the paper shows the role and the ritual of the academic ceremonies of the University of Turin in the age of Enlightenment.

Keywords: Ceremonial, University, Opening ceremony, processions.
description: Rivista di Storia dell'Università di Torino, V. 3, N. 2 (2014)
Supplementary document for Spectrally resolved interferometry based on tilt phase-shifting iteration method - 7439636.pdf
Creators: name: Zhang, Weihao
name: Zhang, Hangying
name: Meng, Kai
name: WU, XING
name: Lou, Peihuang
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: The comparative analysis of interpolation methods and the impact of initializations parameters on iteration performance
The hand-made tail: Non-perturbative tails from multifield inflation
Creators: name: Achucarro, Ana
name: Cespedes, Sebastian
name: Davis, Anne-Christine
name: Palma, Gonzalo A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It is becoming increasingly clear that large but rare fluctuations of the primordial curvature field, controlled by the tail of its probability distribution, could have dramatic effects on the current structure of the universe -- {\it e.g.} via primordial black-holes. However, the use of standard perturbation theory to study the evolution of fluctuations during inflation fails in providing a reliable description of how non-linear interactions induce non-Gaussian tails. Here, we use the stochastic inflation formalism to study the non-perturbative effects from multi-field fluctuations on the statistical properties of the primordial curvature field. Starting from the effective action describing multi-field fluctuations, we compute the joint probability density function and show that enhanced non-Gaussian tails are a generic feature of slow-roll inflation with additional degrees of freedom.
description: 32 pages + appendices, 4 figures
June/July : General Issue
Creators: Katy Salamati; Qi Ling Lai; Saurabh Srivastava; Tasneem Ahmed; Chun Sing Lai; 
Surekha Deshmukh
Publisher: name: IEEE
Year: 2024

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