cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Control of field- and current-driven magnetic domain wall motion by exchange-bias in Cr2O3/Co/Pt trilayers
Creators: name: Jacot, B. J.
name: Vèlez, S.
name: Noël, P.
name: Helbingk, P.
name: Binda, F.
name: Lambert, C. -H.
name: Gambardella, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the motion of magnetic domain walls driven by magnetic fields and current-driven spin-orbit torques in an exchange-biased system with perpendicular magnetization. We consider Cr2O3/Co/Pt trilayers as model system, in which the magnetization of the Co layer can be exchanged-biased out-of-plane or in-plane depending on the field cooling direction. In field-driven experiments, the in-plane exchange bias favors the propagation of the domain walls with internal magnetization parallel to the exchange bias field. In current-driven experiments, the domain walls propagate along the current direction, but the domain wall velocity increases and decreases symmetrically (anti-symmetrically) for both current polarities when the exchange bias is parallel (perpendicular) to the current line. At zero external field, the exchange bias modifies the velocity of current-driven domain wall motion by a factor of ten. We also find that the exchange bias remains stable under external fields up to 15 kOe and ns-long current pulses with current density up to 3.5x10^12 A/m^2. Our results demonstrate versatile control of the domain wall motion by exchange bias, which is relevant to achieve field-free switching of the magnetization in perpendicular systems and current-driven manipulation of domain walls velocity in spintronic devices.
First foot prints of chemistry on the shore of the Island of Superheavy Elements
Creators: name: Eichler, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Chemistry has arrived on the shore of the Island of Stability with the first chemical investigation of the superheavy elements Cn, 113, and 114. The results of three experimental series leading to first measured thermodynamic data and qualitatively evaluated chemical properties for these elements are described. An interesting volatile compound class has been observed in the on-line experiments for the elements Bi and Po. Hence, an exciting chemical study of their heavier transactinide homologues, elements 115 and 116 is suggested.
description: Invited Talk given at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)
Prunus insititia L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. insititia L. Cat. 83und 424. Kultiviert und subspontan. (Leider ist im Cat. über die Natur der angeführten Fundorte nichts gesagt;dasselbe gilt für mehrere nach 1895bekanntgegebene Fundorte.)
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Spin dynamics in a two-dimensional quantum gas
Creators: name: Pedersen, P.L.
name: Gajdacz, M.
name: Deuretzbacher, Frank
name: Santos, Luis
name: Klempt, Carsten
name: Sherson, J.F.
name: Hilliard, A.J.
name: Arlt, Jan J.
Publisher: name: College Park, MD : American Physical Society
Year: 2014
Subjects: subject: Bose-Einstein condensation
subject: Two dimensional
subject: Applied magnetic fields
subject: Ballistic expansion
subject: Bose-Einstein condensates
subject: Density distributions
subject: Density modulation
subject: Einstein-podolsky-rosen entanglements
subject: Momentum correlation
subject: Spin orientations
subject: Gases
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We have investigated spin dynamics in a two-dimensional quantum gas. Through spin-changing collisions, two clouds with opposite spin orientations are spontaneously created in a Bose-Einstein condensate. After ballistic expansion, both clouds acquire ring-shaped density distributions with superimposed angular density modulations. The density distributions depend on the applied magnetic field and are well explained by a simple Bogoliubov model. We show that the two clouds are anticorrelated in momentum space. The observed momentum correlations pave the way towards the creation of an atom source with nonlocal Einstein-Podolsky-Rosen entanglement. © 2014 American Physical Society.
Nonlinear three-state quantum walks
Creators: name: Falcão, P. R. N.
name: Mendonça, J. P.
name: Buarque, A. R. C.
name: Dias, W. S.
name: Almeida, G. M. A.
name: Lyra, M. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The dynamics of a three-state quantum walk with amplitude-dependent phase shifts is investigated. We consider two representative inputs whose linear evolution is known to display either full dispersion of the wave packet or intrinsic localization on the initial position. The nonlinear counterpart presents much more involved dynamics featuring self-trapping, solitonic pulses, radiation, and chaotic-like behavior. We show that nonlinearity leads to a metastable self-trapped wavepacket component that radiates in the long-time regime with the survival probability $\propto t^{-1/2}$. A sudden dynamical transition from such metastable state to the point when the radiation process is triggered is found for a set of parameters.
description: 5 pages, 5 figures
Time evolution of open quantum many-body systems
Creators: name: Overbeck, Vincent Raphael
name: Weimer, Hendrik
Publisher: name: College Park, MD : American Physical Society
Year: 2016
Subjects: subject: Information theory
subject: Classical correlation
subject: Non-equilibrium steady state
subject: Non-Markovian behavior
subject: Quantitative agreement
subject: Quantum many-body systems
subject: Quantum master equations
subject: Variational methods
subject: Variational principles
subject: Quantum theory
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We establish a generic method to analyze the time evolution of open quantum many-body systems. Our approach is based on a variational integration of the quantum master equation describing the dynamics and naturally connects to a variational principle for its nonequilibrium steady state. We successfully apply our variational method to study dissipative Rydberg gases, finding very good quantitative agreement with small-scale simulations of the full quantum master equation. We observe that correlations related to non-Markovian behavior play a significant role during the relaxation dynamics towards the steady state. We further quantify this non-Markovianity and find it to be closely connected to an information-theoretical measure of quantum and classical correlations. © 2016 American Physical Society.
title: Production networks, firm productivity and geography
Creators: name: Fattorini, Loredana
Publisher: name: IMT Alti Studi Lucca
Year: 2018

description: Modern economies are organised as webs of interconnected
 agents. Among others, companies represent the principal actors. In the recent decades, the emergence of supply networks, that is the organisation of technical processes in production stages involving specialised suppliers located in different countries, brings about an increasing complexity in the worldwide economic system.
 Moreover, empirical studies from firm-level data provide evidence of heterogeneous distribution in companies performance also within industries, regions and countries. However, when discussing policy-making in Europe this aspect is still neglected by many, and the impact of regional or industrial policies is evaluated at the macro level. Recently, geo-coded information on where firms run their activities is becoming available to the researchers, offering a good opportunity to improve the empirical design of specific research
 questions. In this thesis, we investigate these aspects in detail, showing the utility of adapting and implementing analytical tools from Network Science and Machine Learning along with ad hoc econometric techniques. Moreover, we contribute to the literature on international economics, industrial organisation and
 economic geography. With the first work, we propose an empirical tool, the Input Rank, adapted from the notorious PageRank, which is originally designed for social networks and search engines, and we test
 its empirical validity for choices of vertical integration. Then, we ambitiously test the effect of the EU Cohesion Policy on an own-built dataset with firm-level total factor productivities of European manufacturing companies. Finally, thanks to the implementation of the DBSCAN, a challenging density-based spatial clustering algorithm, we exploit firms’ location information to identify industrial clusters and
 examine the likelihood of firms’ survival according to their location in industrial clusters or more isolated areas.
Diffractive phenomena in high energy processes
Creators: name: Frankfurt, Leonid
name: Strikman, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We review the evolution of the studies of diffractive processes in the strong interaction over the last 60 years. First, we briefly outline the early developments of the theory based on analyticity and unitarity of the S-matrix, including the derivation and exploration of the Regge trajectories and related moving cuts. Special attention is paid to the concept of the Pomeron trajectory introduced for description of total, elastic and diffractive cross sections at high energies and to the emergence of the dynamics of multi-Pomeron interactions.The role of large longitudinal distances and color coherent phenomena for the understanding of inelastic diffraction in hadron-hadron scattering and deep inelastic scattering is emphasized. The connection of these phenomena to the cancellation of the contribution of the Glauber approximation in hadron-nucleus collisions and to the understanding of the Gribov-Glauber approximation is explained. The presence of different scales in perturbative QCD due to masses of heavy quarks has led to the emergence of numerous new phenomena including non-universality of the slopes of Regge trajectories made of light and heavy quarks and non-universal energy dependence of elastic cross sections. The application of the perturbative QCD techniques allowed us to calculate from the first principles the interaction of small transverse size color singlets with hadrons leading to the development of the quantitative theory of hard exclusive reactions and to the successful prediction of many regularities in hard large mass diffraction. It also led to the prediction of the phenomenon of complete transparency of nuclear matter in QCD in special processes. The conflict of perturbative QCD with probability conservation for high energy processes of virtual photon-nucleon scattering is explained. Some properties of the new QCD regime are outlined.
description: 79 pages, 11 figures. To be published as a chapter of the book "100 Years of Subatomic Physics"
title: Network analysis of international patent data: technology cohort, temporal dynamics and the role of trade
Creators: name: Gao, Yuan
Publisher: name: IMT Alti Studi Lucca
Year: 2018

description: Access to online electronic database and international patent
 data harmonization has enabled more researchers to work
 with patent data. This thesis joins the more recent studies
 to apply network methodologies to patent data analysis in
 order to understand the multi-variable interactions in innovation, knowledge flows, and technological trends.
 The first chapter focuses on technology cohort in the patent
 family networks and citation networks to investigate how technologies are integrated in utility invention and the patterns
 over time. The consistent technological groups found in this
 analysis are compared to the authority-defined system and
 provide a more complete coverage.
 Chapter 2 focuses on community evolution over time. The
 stabilized Louvain method is adopted to improve consistency
 and stability of community detection. The majority mapping
 algorithm is incorporated for community tracking across time
 slices. A new method is developed to identify sets of central
 nodes. A case study of patent filed by applicants in Germany
 is used to demonstrate and verify the method and the results.
 In the last chapter, I apply the methods developed from the
 first two chapters to the pharmaceutical sector. Motivated
 by the needs to encourage pharmaceutical R&D and promote
 globalized innovation, I focus on the effects of being central
 with a favorable balance in international market on being central in global pharmaceutical R&D collaboration. The descriptive results and a further regression analysis shows positive
 effects from export “Coreness” on co-invention centrality. Despite causality is not fully resolved, our results show a fundamental relationship between knowledge production and
 trade in pharmaceuticals.
Retrieval of the amplitude and phase of the dipole matrix element by attosecond electron-wave-packet interferometry
Creators: name: Chacon, Alexis
name: Lein, Manfred
name: Ruiz, Camilo
Publisher: name: College Park, MD : American Physical Society
Year: 2013
Subjects: subject: A-train
subject: Attosecond pulse
subject: Attoseconds
subject: Coulombic potentials
subject: Coupled dynamics
subject: Dinger equation
subject: Dipole matrix elements
subject: Electron wave functions
subject: Electron wave packet
subject: Infrared pulse
subject: Interferograms
subject: Momentum distributions
subject: Numerical solution
subject: Retrieval methods
subject: Single photon ionization
subject: Spectral phase interferometry
subject: Time-dependent
subject: Wide energy range
subject: Photoionization
subject: Ultrafast phenomena
subject: Interferometry
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We extend the ideas of wave-packet interferometry to implement the algorithm of spectral phase interferometry for direct electric-field reconstruction (SPIDER) for characterizing the amplitude and phase of electron wave packets. Single-photon ionization by an attosecond pulse launches an electron wave packet in the continuum. Ionization by a train of two attosecond pulses in the presence of a moderate infrared pulse creates an interferogram in the final photoelectron momentum distribution. From the interferogram, the complex electron wave function can be reconstructed. If the pulses are well characterized, the amplitude and phase of the bound-free dipole matrix element can be reconstructed over a wide energy range. This is demonstrated by application of the retrieval method to momentum distributions obtained by numerical solution of the time-dependent Schrödinger equation. The case of Coulombic potentials requires appropriate treatment of the laser-Coulomb coupled dynamics. © 2013 American Physical Society.
Blue straggler evolution caught in the act in the Large Magellanic Cloud globular cluster Hodge 11
Creators: name: Li, Chengyuan
name: de Grijs, Richard
name: Deng, Licai
name: Liu, Xiangkun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: High-resolution {\sl Hubble Space Telescope} imaging observations show that the radial distribution of the field-decontaminated sample of 162 'blue straggler' stars (BSs) in the $11.7^{+0.2}_{-0.1}$ Gyr-old Large Magellanic Cloud cluster Hodge 11 exhibits a clear bimodality. In combination with their distinct loci in color--magnitude space, this offers new evidence in support of theoretical expectations that suggest different BS formation channels as a function of stellar density. In the cluster's color--magnitude diagram, the BSs in the inner 15$"$ (roughly corresponding to the cluster's core radius) are located more closely to the theoretical sequence resulting from stellar collisions, while those in the periphery (at radii between 85$"$ and 100$"$) are preferentially found in the region expected to contain objects formed through binary mass transfer or coalescence. In addition, the objects' distribution in color--magntiude space provides us with the rare opportunity in an extragalactic environment to quantify the evolution of the cluster's collisionally induced BS population and the likely period that has elapsed since their formation epoch, which we estimate to have occurred $\sim$4--5 Gyr ago.
description: 13 pages, 4 figure, accepted by Astrophysical Journal Letters
Hyperbolic systems and propagation on causal manifolds
Creators: name: Schapira, Pierre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35A27, 58J15, 58J45, 81T20

description: This is essentially a survey paper in which we solve the global Cauchy problem on causal manifolds for hyperbolic systems of linear partial differential equations in the framework of hyperfunctions. Besides the classical Cauchy-Kowalevsky theorem, our proofs only use tools from the microlocal theory of sheaves, that is, tools of purely algebraic and geometric nature.
description: To appear in Letters in Mathematical Physics
BPS Correlators for $\text{AdS}_3/\text{CFT}_2$
Creators: name: Gaberdiel, Matthias R.
name: Nairz, Beat
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The BPS correlators of the symmetric product orbifold $\text{Sym}_N(\mathbb{T}^4)$ are reproduced from the dual worldsheet theory describing strings on $\text{AdS}_3\times {\rm S}^3\times \mathbb{T}^4$ with minimal ($k=1$) NS-NS flux. More specifically, we show that the worldsheet duals of the symmetric orbifold BPS states can be identified with their lift to the covering surface, thereby making the matching of the correlators essentially manifest. We also argue that the argument can be generalised to arbitrary descendants, using suitable DDF operators on the worldsheet.
description: 18+2 pages, 1 figure
Time Periodic Perturbations of Quantum Systems
Creators: name: Kelemen, A.
Publisher: name: Berlin : De Gruyter
Year: 1979
Subjects: subject: Time Periodic Perturbation
subject: Quantum System
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We discuss a method of calculating the mean energy of a quantum system if the latter is subjected to time periodic perturbations. This, e.g., includes the possibility of determining shapes of spectral lines for an arbitrary distribution of nonperturbed energy levels. The method is studied on a system of order 2 whose spectral line is exactly lorentzian. We prove that the next to lowest approximation reproduces this form exactly. © 1979, Walter de Gruyter. All rights reserved.
Pyrus domestica L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. domestica L. Cat. 84. Kultiviert.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A new compact active turbulence generator for premixed combustion: Non-reacting flow characteristics
Creators: name: Mohammadnejad, Sajjad
name: Saca, Leslie
name: Kheirkhah, Sina
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A new compact active turbulence generator is developed, tested, and characterized, which extends the capabilities of such generators used in turbulent premixed combustion research. The generator is composed of two blades that resemble the shape of two bow-ties. Hot-wire anemometry and high-speed imaging are performed to characterize the non-reacting flow produced by the generator and the blades dynamics, respectively. Two mean bulk flow velocities of 5.0 and 7.0 m/s are examined. For comparison purposes, in addition to the developed generator, tests are also performed for a free jet as well as one and two perforated plates. The results show that the centerline root mean square velocity fluctuations can become about 1.8~m/s, which is several folds larger than that in the literature for reacting flows generated by active grids. For the newly developed device, the power-law decay of the one-dimensional kinetic energy is -1.0 and -1.3 for the mean bulk flow velocities of 5.0 and 7.0 m/s, respectively. The normalized energy dissipation rate is smallest for the newly developed device, while the energy dissipation rate is the largest. The spectral analysis of the velocity data does not show dominant frequencies equal to the blades rotation frequencies; and, the one dimensional kinetic energy and dissipation spectra follow -5/3 and 1/3 power-law relations. It is shown that, the small eddies produced by the newly developed device dissipate the turbulent kinetic energy faster than those corresponding to the rest of the tested turbulence generators.
title: Events and temporary uses in the historic urban  landscape: Lucca Comics & Games between localized  interactions and a worlding project ecology
Creators: name: Marzo, Dania
Publisher: name: IMTAlti Studi Lucca
Year: 2018

description: In the context of the current proliferation of temporary events as
 multifaceted phenomena, the research addresses the spatial
 interactions between a festival and its location. The analysed case,
 Lucca Comics and Games, is currently the largest European event
 dedicated to fantasy culture in terms of the attendance. It takes place
 since 1966 in the Tuscan town of Lucca, a historically preserved and
 ‘atmospherically’ qualified urban landscape. The investigation of the
 relations between the event and this particular setting moves from an
 analysis of multiple temporalities; short-term, long-term and cyclical
 interactions have been investigated in the framework of a processual
 understanding of the city landscape, where eventification and
 festivalisation represent two main increasing trends. The research also
 touches the worlding phenomena of comics-related conventions,
 situating the case within a broader project ecology.
Strongly temperature dependent resistance of meander-patterned graphene
Creators: name: Vasileva, G.Y.
name: Smirnov, D.
name: Vasilyev, Y.B.
name: Nestoklon, M.O.
name: Averkiev, N.S.
name: Novikov, S.
name: Kaya, I.I.
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2017
Subjects: subject: Electronic properties
subject: Graphene devices
subject: Quantum Hall effect
subject: Temperature distribution
subject: Broad temperature ranges
subject: Epitaxial graphene
subject: Quantum Hall regime
subject: Quantum interference
subject: Resistance enhancement
subject: Temperature dependence
subject: Temperature-dependent resistance
subject: Weak localization effects
subject: Graphene
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We have studied the electronic properties of epitaxial graphene devices patterned in a meander shape with the length up to a few centimeters and the width of few tens of microns. These samples show a pronounced dependence of the resistance on temperature. Accurate comparison with the theory shows that this temperature dependence originates from the weak localization effect observed over a broad temperature range from 1.5 K up to 77 K. The comparison allows us to estimate the characteristic times related to quantum interference. In addition, a large resistance enhancement with temperature is observed at the quantum Hall regime near the filling factor of 2. Record high resistance and its strong temperature dependence are favorable for the construction of bolometric photodetectors. © 2017 Author(s).
Spectroscopy of the single-particle states of a quantum-dot molecule
Creators: name: Schmidt, T.
name: Haug, Rolf J.
name: V. Klitzing, K.
name: Förster, A.
name: Lüth, H.
Publisher: name: College Park, MD : American Physical Society
Year: 1997
Subjects: subject: quantum dots
subject: DDS
subject: SET
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We investigate low-temperature transport through two identical vertically coupled quantum dots in a triple-barrier heterostructure. The current-voltage curve exhibits two series of current steps of different magnitude. On the basis of magnetotunneling measurements, we relate the current steps to the single-particle levels of a quantum-dot molecule. From the absence of many-particle phenomena, an upper limit of 1 ns is determined for the energy-relaxation time in the double-dot system.
Perturbation of Systems with a First Integral: Motion on the Reeb Graph
Creators: name: Freidlin, Mark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider the long-time behavior of systems close to a system with a smooth first integral. Under certain assumptions, the limiting behavior, to some extent, turns out to be universal: it is determined by the first integral, the deterministic perturbation, and the initial point. Furthermore, it is the same for a broad class of noises. In particular, the long-time behavior of a deterministic system can, in a sense, be stochastic and stochastic systems can have a reduced stochasticity. The limiting distribution is calculated explicitly.
Morphology and dynamical stability of self-gravitating vortices: Numerical simulations
Creators: name: Restrepo, Steven Rendon
name: Barge, Pierre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Theoretical and numerical studies have shown that large-scale vortices in Protoplanetary discs can result from various hydrodynamical instabilities. Once produced, such vortices can survive nearly unchanged over a large number of rotation periods, slowly migrating towards the star. In the outer disc, self-gravity may affect the vortex evolution and must be included in models. We performed 2D hydrodynamic simulations using the RoSSBi3D code. The outline of our computations was limited to Euler's equations assuming a non-homentropic and non-adiabatic flow for an ideal gas. A series of 45 runs were carried out starting from a Gaussian vortex-model; the evolution of vortices was followed during 300 orbits for various values of the vortex parameters and the Toomre parameter. Two simulations, with the highest resolution (HR) thus far for studies of vortices, were also run to better characterise the internal structure of the vortices and for the purpose of comparison with an isothermal case. We find that SG tends to destabilise the injected vortices, but compact small-scale vortices seem to be more robust than large-scale oblong vortices. Vortex survival critically depends on the value of the disc's Toomre parameter, but may also depend on the disc temperature at equilibrium. Disc SG must be small enough to avoid destruction in successive splitting and an approximate `stability' criterion is deduced for vortices. The self-gravitating vortices that we found persist during hundreds of rotation periods and look like the quasi-steady vortices obtained in the non-self-gravitating case. A number of these self-gravitating vortices are eventually accompanied by a secondary vortex with a horseshoe motion. These vortices reach a new rotational equilibrium in their core, tend to contract in the radial direction, and spin faster.
Efficient Two-Stage Group Testing Algorithms for Genetic Screening
Creators: name: Huber, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Efficient two-stage group testing algorithms that are particularly suited for rapid and less-expensive DNA library screening and other large scale biological group testing efforts are investigated in this paper. The main focus is on novel combinatorial constructions in order to minimize the number of individual tests at the second stage of a two-stage disjunctive testing procedure. Building on recent work by Levenshtein (2003) and Tonchev (2008), several new infinite classes of such combinatorial designs are presented.
description: 14 pages; to appear in "Algorithmica". Part of this work has been presented at the ICALP 2011 Group Testing Workshop; arXiv:1106.3680
title: Worldwide diffusion of solar photovoltaic panels and the role of state incentive: perspectives based on diffusion models
Creators: name: Bunea,  Anita Mariana
Publisher: name: IMT Alti Studi Lucca
Year: 2018

description: The main goal of this thesis is to use the diffusion models to improve our
 understanding of SPP markets, with special focus on (a) identifying the main
 determinants of the diffusion of solar photovoltaic panels worldwide,
 particularly the role played so far by public incentives, (b) characterising the
 scale and temporal profiles of the major domestic shocks in SPP markets which
 mostly occurred after 2007, (c) discussing the resulting perspectives, and the
 involved role of public policies, for the future development of the market.
 Chapter 1 is introductory and preparatory for subsequent ones and pinpoints
 that (a) the presence of shocks is an intrinsic and often dominating feature of
 energy markets, thereby motivating the use of tools as the GBM, (b) only a few
 countries have developed long-term energy plans towards which to manage
 consistently their short-medium term policies, (c) the concept of energy
 framework was useful to indicated a number of commonalities among
 countries.
 The main findings of Chapter 2 were the following: i) essentially everywhere
 the effectiveness of media communication proved negligible, ii) the early phase
 where the growth of the market was completely sustained by internal
 communication only, iii) major changes in the market adoption curves have
 occurred in the form of massive positive shocks which took place between 2006
 and 2016 possibly following incentive measures in the various states, iv)
 inspection of the parameter estimates describing the temporal pattern of the
 shocks showed a lack of temporal persistence of the effects of incentive as well
 as a sharp trade-off between intensity and persistence of the actions.
 The results of Chapter 3 show that the SPP residential market in UK suffers not
 only the structural difficulties of this sector, but also the possible perception of
 relative penalisation suffered by late cohorts of adopters compared to the past
 cohorts who benefited higher rates of FIT. In the commercial and utility sectors
 the imitation rate is higher which might be explained by the fact that firms
 make more rational decisions based on economic factors rather than being led
 by perceptions.
Mechanisms of direct reactions with halo nuclei
Creators: name: Capel, P.
name: Nunes, F. M.
name: Esbensen, H.
name: Johnson, R. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Halo nuclei are exotic nuclei which exhibit a strongly clusterised structure: they can be seen as one or two valence nucleons loosely bound to a core. Being observed at the ridge of the valley of stability, halo nuclei are studied mostly through reactions. In this contribution the reaction models most commonly used to analyse experimental data are reviewed and compared to one another. A reaction observable built on the ratio of two angular distributions is then presented. This ratio enables removing most of the sensitivity to the reaction mechanism, which emphasises the effects of nuclear structure on the reaction.
description: Invited talk given by Pierre Capel at the "10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics" (Cluster12), Debrecen, Hungary, 24-28 September 2012. To appear in the Cluster12 Proceedings in the Open Access Journal of Physics: Conference Series (JPCS). (5 pages, 3 figures)
Hydrodynamic manifestations of gravitational chiral anomaly
Creators: name: Prokhorov, G. Yu.
name: Teryaev, O. V.
name: Zakharov, V. I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The conservation of an axial current modified by the gravitational chiral anomaly implies the universal transport phenomenon (Kinematical Vortical Effect) dependent solely on medium vorticity and acceleration but not dependent explicitly on its temperature and density. This general analysis is verified for the case of massless fermions with spin 1/2.
description: 6 pages
Temporal Wilson loop in the Hamiltonian approach in Coulomb gauge
Creators: name: Quandt, Markus
name: Reinhardt, Hugo
name: Burgio, Giuseppe
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the temporal Wilson loop using the Hamiltonian approach to Yang-Mills theory. In simple cases such as the Abelian theory or the non-Abelian theory in (1+1) dimensions, the known results can be derived using unitary transformations to take care of time evolution. Alternatively, the exact solution can also be found in Coulomb gauge using the exact ground state wave functional which is known explicitly in these simple cases. The Coulomb gauge technique can also be applied to the more realistic case of Yang-Mills theory in (3+1) dimensions, where one has to rely on the approximate vacuum wave functional obtained e.g. in recent variational approaches. We use this formulation to compute the temporal Wilson loop in (3+1) dimensional Yang-Mills theory, and find that the Wilson and Coulomb string tension agree within this approximation scheme. Possible improvements of these findings are briefly discussed.
description: 8 pages; uses PoS.cls; talk given by M. Quandt at "Quark Confinement and the Hadron Spectrum X", Munich, Germany, Oct. 8-12, 2012
Target space entanglement in quantum mechanics of fermions at finite temperature
Creators: name: Hanyuda, Temma
name: Mori, Soichiro
name: Sugishita, Sotaro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the target space entanglement in quantum mechanics of non-interacting fermions at finite temperature. Unlike pure states investigated in arXiv:2105.13726, the (Rényi) entanglement entropy for thermal states does not follow a simple bound because all states in the infinite-dimensional Hilbert space are involved. We investigate a general formula of the target space Rényi entropy for $N$ fermions at finite temperature, and present numerical results of the entropy in a one-dimensional model. We also argue the large $N$ behaviors with a comparison to the grand canonical ensemble.
description: 34+12 pages, 37 figures
Robust trapped-ion quantum logic gates by continuous dynamical decoupling
Creators: name: Bermudez, A.
name: Schmidt, Piet O.
name: Plenio, M.B.
name: Retzker, A.
Publisher: name: College Park, MD : American Physical Society
Year: 2012
Subjects: subject: AC Stark shift
subject: Dynamical decoupling
subject: Quantum coherence
subject: Quantum gates
subject: Quantum logic gate
subject: Trapped ion
subject: Two-qubit
subject: Underlying mechanism
subject: Automata theory
subject: Logic gates
subject: Quantum electronics
subject: Quantum computers
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We introduce a scheme that combines phonon-mediated quantum logic gates in trapped ions with the benefits of continuous dynamical decoupling. We demonstrate theoretically that a strong driving of the qubit decouples it from external magnetic-field noise, enhancing the fidelity of two-qubit quantum gates. Moreover, the scheme does not require ground-state cooling, and is inherently robust to undesired ac Stark shifts. The underlying mechanism can be extended to a variety of other systems where a strong driving protects the quantum coherence of the qubits without compromising the two-qubit couplings. © 2012 American Physical Society.
Wormholes and Off-Diagonal Solutions in f(R,T), Einstein and Finsler Gravity Theories
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The aims of this work are 1) to sketch a proof that there are such parameterizations of the local frame and canonical connection structures when the gravitational field equations in f(R,T)-modified gravity, MG, can be integrated in generic off-diagonal forms with metrics depending on all spacetime coordinates and 2) to provide some examples of exact solutions.
description: 4 pages, ERE2012-Proceedings macros, Contribution to the Spanish Relativity Meeting in Portugal, Guimaraes, September 3-7, 2012
title: Are you being served? The rise of robots in the services sector.
Creators: name: Lawlor, Jennifer
Publisher: name: TU Dublin
Year: 2019

description: Imagine you are checking in to your hotel for a well-deserved holiday. You are looking forward to a break away from the modern connected world, but are greeted by a robotic dinosaur at the reception desk. Welcome to the Henn-na Hotel in Nagasaki, Japan, the world's first fully manned robotic hotel.
Single electron counting statistics for atto-Ampere currents through a semiconductor quantum dot
Creators: name: Hohls, Frank
name: Fricke, Christian
name: Wegscheider, W.
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2007
Subjects: subject: Counting statistics
subject: Fluctuations
subject: Quantum dot
subject: Single electron counting
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We have implemented single electron counting for the tunneling current through a quantum dot. This allows us to study in detail the dynamics of transport. For certain settings of the gate and bias voltage we observe bimodal counting statistics which reveal the participation of different dot configurations in the transport process. The lifetime of these configurations is long compared to the mean tunneling times of the electrons. © 2007 American Institute of Physics.
Bulk and Surface Critical Behaviors of quantum Heisenberg antiferromagnet on a two-dimensional coupled diagonal ladders
Creators: name: Wang, Zhe
name: Zhang, Fan
name: Guo, Wenan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using Quantum Monte Carlo simulations, we study the spin-1/2 Heisenberg model on a two-dimensional lattice formed by coupling diagonal ladders. The model hosts an antiferromagnetic Néel phase, a rung singlet product phase, and a topological none trivial Haldane phase, separated by two quantum phase transitions. We show that the two quantum critical points are all in the three-dimensional O(3) universality class. The properties of the two gapped phases, including the finite-size behavior of the string orders in the Haldane phase, are studied. We show that the surface formed by the ladders ends is gapless, while the surface exposed along the ladders is gapful, in the Haldane phase. Conversely, in the gapped rung singlet phase, the former surface is gapped, and the latter is gapless. We demonstrate that, although mechanisms of the two gapless modes are different, nonordinary surface critical behaviors are realized at both critical points on the gapless surfaces exposed by simply cutting bonds without fine-tuning the surface coupling required to reach a multicritical point in classical models. We also show that, on the gapped surfaces, the surface critical behaviors are in the ordinary class.
description: 12 pages, 8 figures
title: Ermittlung der Bedarfe und Erstellung von Handlungsempfehlungen für die Weiterentwicklung der Schulungsangebote an der Hochschulbibliothek der Hochschule für Technik, Wirtschaft und Kultur Leipzig
Creators: name: Arndt, Nils
Publisher: name: Hochschule für Technik, Wirtschaft und Kultur Leipzig
Year: 2015

description: Die vorliegende Masterarbeit beschäftigt sich mit den Schulungsangeboten der Hochschulbibliothek der Hochschule für Technik, Wirtschaft und Kultur Leipzig. Die Bedürfnisse der Studierenden stehen hierbei im Vordergrund. Um die hierfür benötigen Daten zu gewinnen, wurde eine quantitative Online-Befragung von ausgewählten Bachelorstudiengängen durchgeführt. Parallel hierzu fand eine qualitative Befragung der entsprechenden Studiendekane statt. Die Auswertung der Online-Befragung der Studierenden erfolgte dabei unter der Berücksichtigung fachspezifischer Aspekte. Die darauf aufbauenden Handlungsempfehlungen bilden den Schlussteil dieser Arbeit ab.
A constructive method for computing generalized Manley--Rowe constants of motion
Creators: name: Kartashova, Elena
name: Tec, Loredana
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The Manley--Rowe constants of motion (MRC) are conservation laws written out for a dynamical system describing the time evolution of the amplitudes in resonant triad. In this paper we extend the concept of MRC to resonance clusters of any form yielding generalized Manley--Rowe constants (gMRC) and give a constructive method how to compute them. We also give details of a \emph{Mathematica} implementation of this method. While MRC provide integrability of the underlying dynamical system, gMRC generally do not but may be used for qualitative and numerical study of dynamical systems describing generic resonance clusters.
description: 9 pages
Universal oscillations of high-order cumulants
Creators: name: Flindt, Christian
name: Fricke, Christian
name: Hohls, Frank
name: Novotny, Tomas
name: Netocny, Karel
name: Brandes, Tobias
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2009
Subjects: subject: Counting statistics
subject: Cumulants
subject: Universal oscillations
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We discuss our recent measurement of high-order cumidants of charge transport through a quantum dot. The cumulants were found to oscillate as functions of measurement time before reaching their linear-in-time asymptotics. A theoretical analysis revealed that such oscillations in fact constitute a universal phenomenon: for a large class of stochastic processes the high-order cumulants are predicted to oscillate as functions of basically any parameter. Here, we give an overview of these recent results, provide an outlook on future applications of our findings, and formidate a number of open questions. © 2009 American Institute of Physics.
Long Strings and Quasinormal Winding Modes
Creators: name: Ashok, Sujay K.
name: Troost, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the path integral for a particle on the covering group of SL(2,R) using a decomposition of the Lie algebra into adjoint orbits. We thus intuitively derive the Hilbert space of the particle on the group including discrete and continuous representations. Next, we perform a Lorentzian hyperbolic orbifold of the partition function and relate it to the Euclidean BTZ partition function. We use the particle model to inform further discussion of the spectral content of the one loop vacuum amplitude for strings on BTZ black hole backgrounds. We argue that the poles in the loop integrand code contributions of long string modes that wind the black hole. We moreover identify saddle point contributions of quasinormal winding modes.
description: 31 pages
Quantum-state transfer from an ion to a photon
Creators: name: Stute, A.
name: Casabone, B.
name: Brandstätter, B.
name: Friebe, K.
name: Northup, T. E.
name: Blatt, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum network requires information transfer between distant quantum computers, which would enable distributed quantum information processing and quantum communication. One model for such a network is based on the probabilistic measurement of two photons, each entangled with a distant atom or atomic ensemble, where the atoms represent quantum computing nodes. A second, deterministic model transfers information directly from a first atom onto a cavity photon, which carries it over an optical channel to a second atom; a prototype with neutral atoms has recently been demonstrated. In both cases, the central challenge is to find an efficient transfer process that preserves the coherence of the quantum state. Here, following the second scheme, we map the quantum state of a single ion onto a single photon within an optical cavity. Using an ion allows us to prepare the initial quantum state in a deterministic way, while the cavity enables high-efficiency photon generation. The mapping process is time-independent, allowing us to characterize the interplay between efficiency and fidelity. As the techniques for coherent manipulation and storage of multiple ions at a single quantum node are well established, this process offers a promising route toward networks between ion-based quantum computers.
description: 6 pages, 3 figures
title: Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Section 220 Loan for Waterfront Place Apartments in Everett, Washington (FHA Loan No. 127-32009)
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-00655
Shot noise in tunneling through a single InAs quantum dot
Creators: name: Hohls, Frank
name: Nauen, André
name: Maire, Niels
name: Pierz, Klaus
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2005
Subjects: subject: quantum dots
subject: shot noise measurements
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We examine the dynamical properties of resonant tunneling through single InAs quantum dots by measuring the shot noise of the current. We observe an approximately linear voltage dependence of both the shot noise, characterized by the Fano factor, and the tunneling current itself. We ascribe this to the three-dimensional density of states of the emitter and collector and are able to model the voltage dependence using a master equation approach. © 2005 American Institute of Physics.