cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evolutionary forces in language change
Creators: name: Ahern, Christopher A.
name: Newberry, Mitchell G.
name: Clark, Robin
name: Plotkin, Joshua B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Computation and Language (cs.CL)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Languages and genes are both transmitted from generation to generation, with opportunity for differential reproduction and survivorship of forms. Here we apply a rigorous inference framework, drawn from population genetics, to distinguish between two broad mechanisms of language change: drift and selection. Drift is change that results from stochasticity in transmission and it may occur in the absence of any intrinsic difference between linguistic forms; whereas selection is truly an evolutionary force arising from intrinsic differences -- for example, when one form is preferred by members of the population. Using large corpora of parsed texts spanning the 12th century to the 21st century, we analyze three examples of grammatical changes in English: the regularization of past-tense verbs, the rise of the periphrastic `do', and syntactic variation in verbal negation. We show that we can reject stochastic drift in favor of a selective force driving some of these language changes, but not others. The strength of drift depends on a word's frequency, and so drift provides an alternative explanation for why some words are more prone to change than others. Our results suggest an important role for stochasticity in language change, and they provide a null model against which selective theories of language evolution must be compared.
Physical quantities and spatial parameters in the complex octonion curved space
Creators: name: Weng, Zi-Hua
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The paper focuses on finding out several physical quantities to exert an influence on the spatial parameters of complex-octonion curved space, including the metric coefficient, connection coefficient, and curvature tensor. In the flat space described with the complex octonions, the radius vector is combined with the integrating function of field potential to become a composite radius vector. And the latter can be considered as the radius vector in a flat composite-space (a function space). Further it is able to deduce some formulae between the physical quantity and spatial parameter, in the complex-octonion curved composite-space. Under the condition of weak field approximation, these formulae infer a few results accordant with the General Theory of Relativity. The study reveals that it is capable of ascertaining which physical quantities are able to result in the warping of space, in terms of the curved composite-space described with the complex octonions. Moreover, the method may be expanded into some curved function spaces, seeking out more possible physical quantities to impact the bending degree of curved spaces.
Concurrent Remote Entanglement with Quantum Error Correction
Creators: name: Roy, Ananda
name: Stone, A. Douglas
name: Jiang, Liang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Remote entanglement of distant, non-interacting quantum entities is a key primitive for quantum information processing. We present a new protocol to remotely entangle two stationary qubits by first entangling them with propagating ancilla qubits and then performing a joint two-qubit measurement on the ancillas. Subsequently, single-qubit measurements are performed on each of the ancillas. We describe two continuous variable implementations of the protocol using propagating microwave modes. The first implementation uses propagating Schr$\rm{\ddot{o}}$dinger cat-states as the flying ancilla qubits, a joint-photon-number-modulo-2 measurement of the propagating modes for the two-qubit measurement and homodyne detections as the final single-qubit measurements. The presence of inefficiencies in realistic quantum systems limit the success-rate of generating high fidelity Bell-states. This motivates us to propose a second continuous variable implementation, where we use quantum error correction to suppress the decoherence due to photon loss to first order. To that end, we encode the ancilla qubits in superpositions of Schrödinger cat states of a given photon-number-parity, use a joint-photon-number-modulo-4 measurement as the two-qubit measurement and homodyne detections as the final single-qubit measurements. We demonstrate the resilience of our quantum-error-correcting remote entanglement scheme to imperfections. Further, we describe a modification of our error-correcting scheme by incorporating additional individual photon-number-modulo-2 measurements of the ancilla modes to improve the success-rate of generating high-fidelity Bell-states. Our protocols can be straightforwardly implemented in state-of-the-art superconducting circuit-QED systems.
One-loop pseudo-Goldstone masses in the minimal $SO(10)$ Higgs model
Creators: name: Gráf, Lukáš
name: Malinský, Michal
name: Mede, Timon
name: Susič, Vasja
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the prominent perturbative contributions shaping the one-loop scalar spectrum of the minimal non-supersymmetric renormalizable $SO(10)$ Higgs model whose unified gauge symmetry is spontaneously broken by an adjoint scalar. Focusing on its potentially realistic $45\oplus 126$ variant in which the rank is reduced by a VEV of the 5-index self-dual antisymmetric tensor, we provide a thorough analysis of the corresponding one-loop Coleman-Weinberg potential, paying particular attention to the masses of the potentially tachyonic pseudo-Goldstone bosons (PGBs) transforming as $(8,1,0)$ and $(1,3,0)$ under the Standard Model gauge group. The results confirm the assumed existence of extended regions in the parameter space supporting a locally stable SM-like quantum vacuum inaccessible at the tree-level. The effective potential (EP) tedium is compared to that encountered in the previously studied $45\oplus 16$ $SO(10)$ Higgs model where the polynomial corrections to the relevant pseudo-Goldstone masses turn out to be easily calculable within a very simplified purely diagrammatic approach.
description: 25 pages
Electronic instabilities of the extended Hubbard model on the honeycomb lattice from functional renormalization
Creators: name: Volpez, Yanick
name: Scherer, Daniel D.
name: Scherer, Michael M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Interacting fermions on the half-filled honeycomb lattice with short-range repulsions have been suggested to host a variety of interesting many-body ground states, e.g., a topological Mott insulator. A number of recent studies of the spinless case in terms of exact diagonalization, the infinite density matrix renormalization group and the functional renormalization group, however, indicate a suppression of the topological Mott insulating phase in the whole range of interaction parameters. Here, we complement the previous studies by investigating the quantum many-body instabilities of the physically relevant case of spin-1/2 fermions with onsite, nearest-neighbor and second-nearest-neighbor repulsion. To this end, we employ the multi-patch functional renormalization group for correlated fermions with refined momentum resolution observing the emergence of an antiferromagnetic spin-density wave and a charge-density wave for dominating onsite and nearest-neighbor repulsions, respectively. For dominating second-nearest neighbor interaction our results favor an ordering tendency towards a charge-modulated ground state over the topological Mott insulating state. The latter evades a stabilization as the leading instability by the additional onsite interaction.
description: 9 pages, 6 figures
Investigating the Circumstellar Disk of the Be Shell Star 48 Librae
Creators: name: Silaj, J.
name: Jones, C. E.
name: Carciofi, A. C.
name: Escolano, C.
name: Okazaki, A. T.
name: Tycner, C.
name: Rivinius, T.
name: Klement, R.
name: Bednarski, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A global disk oscillation implemented in the viscous decretion disk (VDD) model has been used to reproduce most of the observed properties of the well known Be star $ζ$ Tau. 48 Librae shares several similarities with $ζ$ Tau -- they are both early-type Be stars, they display shell characteristics in their spectra, and they exhibit cyclic $V/R$ variations -- but has some marked differences as well, such as a much denser and more extended disk, a much longer $V/R$ cycle, and the absence of the so-called triple-peak features. We aim to reproduce the photometric, polarimetric, and spectroscopic observables of 48 Librae with a self-consistent model, and to test the global oscillation scenario for this target. Our calculations are carried out with the three-dimensional NLTE radiative transfer code HDUST. We employ a rotationally deformed, gravity-darkened central star, surrounded by a disk whose unperturbed state is given by the VDD model. A two-dimensional global oscillation code is then used to calculate the disk perturbation, and superimpose it on the unperturbed disk. A very good, self-consistent fit to the time-averaged properties of the disk is obtained with the VDD. The calculated perturbation has a period $P = 12$ yr, which agrees with the observed period, and the behaviour of the $V/R$ cycle is well reproduced by the perturbed model. The perturbed model improves the fit to the photometric data and reproduces some features of the observed spectroscopic data. Some suggestions to improve the synthesized spectroscopy in a future work are given.
Absolute real root separation
Creators: name: Bugeaud, Yann
name: Dujella, Andrej
name: Pejkovic, Tomislav
name: Salvy, Bruno
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: While the separation (the minimal nonzero distance) between roots of a polynomial is a classical topic, its absolute counterpart (the minimal nonzero distance between their absolute values) does not seem to have been studied much. We present the general context and give tight bounds for the case of real roots.
Robust quantum state transfer via topologically protected edge channels in dipolar arrays
Creators: name: Dlaska, Clemens
name: Vermersch, Benoît
name: Zoller, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We show how to realize quantum state transfer between distant qubits using the chiral edge states of a two-dimensional topological spin system. Our implementation based on Rydberg atoms allows to realize the quantum state transfer protocol in state of the art experimental setups. In particular, we show how to adapt the standard state transfer protocol to make it robust against dispersive and disorder effects.
Distributed or Monolithic? A Computational Architecture Decision Framework
Creators: name: Mosleh, Mohsen
name: Dalili, Kia
name: Heydari, Babak
Publisher: name: arXiv
Year: 2016
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Distributed architectures have become ubiquitous in many complex technical and socio-technical systems because of their role in improving uncertainty management, accommodating multiple stakeholders, and increasing scalability and evolvability. This departure from monolithic architectures provides a system with more flexibility and robustness in response to uncertainties that it may confront during its lifetime. Distributed architecture does not provide benefits only, as it can increase cost and complexity of the system and result in potential instabilities. The mechanisms behind this trade-off, however, are analogous to those of the widely-studied transition from integrated to modular architectures. In this paper, we use a conceptual decision framework that unifies modularity and distributed architecture on a five-stage systems architecture spectrum. We add an extensive computational layer to the framework and explain how this can enhance decision making about the level of modularity of the architecture. We then apply it to a simplified demonstration of the Defense Advanced Research Projects Agency (DARPA) fractionated satellite program. Through simulation, we calculate the net value that is gained (or lost) by migrating from a monolithic architecture to a distributed architecture and show how this value changes as a function of uncertainties in the environment and various system parameters. Additionally, we use Value at Risk as a measure for the risk of losing the value of distributed architecture, given its inherent uncertainty.
description: 12 pages
Advancing parabolic operators in thermodynamic MHD models: Explicit super time-stepping versus implicit schemes with Krylov solvers
Creators: name: Caplan, Ronald M.
name: Mikic, Zoran
name: Linker, Jon A.
name: Lionello, Roberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: We explore the performance and advantages/disadvantages of using unconditionally stable explicit super time-stepping (STS) algorithms versus implicit schemes with Krylov solvers for integrating parabolic operators in thermodynamic MHD models of the solar corona. Specifically, we compare the second-order Runge-Kutta Legendre (RKL2) STS method with the implicit backward Euler scheme computed using the preconditioned conjugate gradient (PCG) solver with both a point-Jacobi and a non-overlapping domain decomposition ILU0 preconditioner. The algorithms are used to integrate anisotropic Spitzer thermal conduction and artificial kinematic viscosity at time-steps much larger than classic explicit stability criteria allow. A key component of the comparison is the use of an established MHD model (MAS) to compute a real-world simulation on a large HPC cluster. Special attention is placed on the parallel scaling of the algorithms. It is shown that, for a specific problem and model, the RKL2 method is comparable or surpasses the implicit method with PCG solvers in performance and scaling, but suffers from some accuracy limitations. These limitations, and the applicability of RKL methods are briefly discussed.
description: 22 pages, 13 figures. Submitted to conference proceedings of ASTRONUM 2016 June 6-10 Monterey, CA USA
Quasi Normal Modes and P-V Criticallity for scalar perturbations in a class of dRGT massive gravity around Black Holes
Creators: name: Prasia, P
name: Kuriakose, V C
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate black holes in a class of dRGT massive gravity for their quasi normal modes (QNMs) for neutral and charged ones using Improved Asymptotic Iteration Method (Improved AIM) and their thermodynamic behavior. The QNMs are studied for different values of the massive parameter m_g for both neutral and charged dRGT black holes under a massless scalar perturbation. As m_g increases, the magnitude of the quasi normal frequencies are found to be increasing. The results are also compared with the Schwarzchild de Sitter (SdS) case. P-V criticallity of the aforesaid black hoels under massles scalar perturbation in the de Sitter space are also studied in this paper. It is found that the thermodynamic behavior of a neutral black hole shows no physically feasible phase transition while a charged black hole shows a definite phase transition.
description: Accepted for publication in 'General Relativity and Gravitation'- Springer
Gasparyan's Inequality
Creators: name: Pevnyi, A. B.
name: Sitnik, S. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15

description: We consider a new and simpler proof of an inequality of A.S. Gasparyan, which was originally derived in terms of complex algebraical objects --- multidimensional hyperdeterminants. Our proof is much simpler and use only standard technics such as mean inequalities. The main theorem on Gini means is essentially used. Some corollaries and problems are considered.
description: 6 pages, text in Russian, abstract in English
Collective effects in the radiation pressure force
Creators: name: Bachelard, R.
name: Piovella, N.
name: Guerin, W.
name: Kaiser, R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We discuss the role of diffuse, Mie and cooperative scattering on the radiation pressure force acting on the center of mass of a cloud of cold atoms. Even though a mean-field Ansatz (the `timed Dicke state'), previously derived from a cooperative scattering approach, has been shown to agree satisfactorily with experiments, diffuse scattering also describes very well most features of the radiation pressure force on large atomic clouds. We compare in detail an incoherent, random walk model for photons and a diffraction approach to the more complete description based on coherently coupled dipoles. We show that a cooperative scattering approach, although it provides a quite complete description of the scattering process, is not necessary to explain the previous experiments on the radiation pressure force.
A Comprehensive Census of Nearby Infrared Excess Stars
Creators: name: Cotten, Tara H.
name: Song, Inseok
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The conclusion of the WISE mission presents an opportune time to summarize the history of using excess emission in the infrared as a tracer of circumstellar material and exploit all available data for future missions such as JWST. We have compiled a catalog of infrared excess stars from peer-reviewed articles and perform an extensive search for new infrared excess stars by cross-correlating the Tycho-2 and AllWISE catalogs. We define a significance of excess in four spectral type divisions and select stars showing greater than either 3$σ$ or 5$σ$ significance of excess in the mid- and far-infrared. Through procedures including SED fitting and various image analyses, each potential excess source was rigorously vetted to eliminate false-positives. The infrared excess stars from the literature and the new stars found through the Tycho-2 and AllWISE cross-correlation produced nearly 500 `Prime' infrared excess stars and $\geq$1200 `Reserved' stars. The main catalog of infrared excess stars are nearby, bright, and either demonstrate excess in more than one passband or have infrared spectroscopy confirming the infrared excess. This study identifies stars that display a spectral energy distribution suggestive of a secondary or post-protoplanetary generation of dust and they are ideal targets for future optical and infrared imaging observations. The final catalogs of stars summarizes the past work using infrared excess to detect dust disks and with the most extensive compilation of infrared excess stars ($\sim$ 1750) to date, we investigate various relationships among stellar and disk parameters.
description: 15 pages in two-column format, 17 figures, 5 tables; Accepted for publication in ApJS
Updated measurement of the $e^+e^- \to ωπ^0 \to π^0π^0γ$ cross section with the SND detector
Creators: name: Achasov, M. N.
name: Barnyakov, A. Yu.
name: Beloborodov, K. I.
name: Berdyugin, A. V.
name: Berkaev, D. E.
name: Bogdanchikov, A. G.
name: Botov, A. A.
name: Dimova, T. V.
name: Druzhinin, V. P.
name: Golubev, V. B.
name: Kardapoltsev, L. V.
name: Kasaev, A. S.
name: Kharlamov, A. G.
name: Kirpotin, A. N.
name: Kovrizhin, D. P.
name: Koop, I. A.
name: Korol, A. A.
name: Koshuba, S. V.
name: Martin, K. A.
name: Obrazovsky, A. E.
name: Pakhtusova, E. V.
name: Rogovsky, Yu. A.
name: Senchenko, A. I.
name: Serednyakov, S. I.
name: Silagadze, Z. K.
name: Shatunov, Yu. M.
name: Shtol, D. A.
name: Shwartz, D. B.
name: Skrinsky, A. N.
name: Surin, I. K.
name: Vasiljev, A. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We analyze a 37 pb$^{-1}$ data sample collected with the SND detector at the VEPP-2000 $e^+e^-$ collider in the center-of-mass energy range 1.05--2.00 GeV and present an updated measurement of the $e^+e^- \to ωπ^0 \to π^0π^0γ$ cross section. In particular, we correct the mistake in radiative correction calculation made in our previous measurement based on a part of the data. The measured cross section is fitted with the vector meson dominance model with three $ρ$-like states and used to test the conserved vector current hypothesis in the $τ^-\toωπ^-ν_τ$ decay.
description: 7 pages, 3 figures, 3 tables
Contextuality of Identical Particles
Creators: name: Kurzynski, Pawel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A generalisation of quantum contextuality to the case of many indentical particles is presented. The model consists of a finite collection of modes that can be occupied by N particles, either bosons or fermions. Measurement scenarios allow one to measure occupation of each mode in at least two different measurement contexts. The system is said to be non-contextual if the occupation numbers can be assigned to modes in each measurement scenario. The assignment is done under the non-contextuality assumption, i.e., an occupation number assigned to a mode does not depend on a scenario in which this mode is measured. In addition, the total number of particles has to be conserved, therefore the sum of occupation numbers in each measurement context is equal to N. For N=1 the model does not differ from the standard contextuality scenario. However, for N>1 the problem reveals new complex features. In particular, it is shown that a type of contextuality exhibited by the system (state-dependent, state-independent, or non-contextual) depends on the type and the number of particles. Further properties of this model and open problems are also discussed.
description: 5 pages, 3 figures
Controlling the conductance of molecular junctions using proton transfer reactions: A theoretical model study
Creators: name: Hofmeister, Chriszandro
name: Coto, Pedro B.
name: Thoss, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The influence of an intramolecular proton transfer reaction on the conductance of a molecular junction is investigated employing a generic model, which includes the effects of the electric field of the gate and leads electrodes and the coupling to a dissipative environment. Using a quantum master equation approach it is shown that, depending on the localization of the proton, the junction exhibits a high or low current state, which can be controlled by external electric fields. Considering different regimes, which range from weak to strong hydrogen bonds in the proton transfer complex and comprise situations with high and low barriers, necessary preconditions to achieve control are analyzed. The results show that systems with a weak hydrogen bond and a significant energy barrier for the proton transfer can be used as molecular transistors or diodes.
On the pronormality of subgroups of odd indices in finite simple symplectic groups
Creators: name: Kondrat'ev, Anatoly S.
name: Maslova, Natalia V.
name: Revin, Danila O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20D05, 20D20, 20E32, 20E45

description: A subgroup $H$ of a group $G$ is said to be pronormal in $G$ if $H$ and $H^g$ are conjugate in $\langle H, H^g\rangle$ for every element $g \in G$. In [Sib. Math. J. 2015. Vol. 56, no. 6] we proved that subgroups of odd indeces are pronormal in many finite simple group. In [Proc. Steklov Inst. Math., to appear] we proved that a group $PSp_{6n}(q)$ with $q \equiv \pm 3 \pmod 8$ contains a nonpronormal subgroup of odd index. In this paper we prove that if $n \not \in \{2^m, 2^m(2^{2k}+1) \mid m, k \in \mathbb{N} \cup \{0\}\}$ then a group $PSp_{2n}(q)$ with $q \equiv \pm 3 \pmod 8$ contains a nonpronormal subgroup of odd index; if $n=2^m$ then any subgroup of odd index is pronormal in a group $PSp_{2n}(q)$, where $q \equiv \pm 3 \pmod 8$.
description: 14 pages, in Russian
Enhanced spin-orbit coupling in core/shell nanowires
Creators: name: Furthmeier, Stephan
name: Dirnberger, Florian
name: Gmitra, Martin
name: Bayer, Andreas
name: Forsch, Moritz
name: Hubmann, Joachim
name: Schüller, Christian
name: Reiger, Elisabeth
name: Fabian, Jaroslav
name: Korn, Tobias
name: Bougeard, Dominique
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin-orbit coupling (SOC) in semiconductors is strongly influenced by structural asymmetries, as prominently observed in bulk crystal structures that lack inversion symmetry. Here, we study an additional effect on the SOC: the asymmetry induced by the large interface area between a nanowire core and its surrounding shell. Our experiments on purely wurtzite GaAs/AlGaAs core/shell nanowires demonstrate optical spin injection into a single free-standing nanowire and determine the effective electron g-factor of the hexagonal GaAs wurtzite phase. The spin relaxation is highly anisotropic in time-resolved micro-photoluminescence measurements on single nanowires, showing a significant increase of spin relaxation in external magnetic fields. This behavior is counterintuitive compared to bulk wurtzite crystals. We present a model for the observed electron spin dynamics highlighting the dominant role of the interface-induced SOC in these core/shell nanowires. This enhanced SOC may represent an interesting tuning parameter for the implementation of spin-orbitronic concepts in semiconductor-based structures.
Quantum Zeno and Anti-Zeno Effects on the Entanglement Dynamics of Qubits Dissipating into a Common and non-Markovian Environment
Creators: name: Nourmandipour, Alireza
name: Tavassoly, M. K.
name: Bolorizadeh, M. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the quantum Zeno and anti-Zeno effects on pairwise entanglement dynamics of a collective of non-interacting qubits which have been initially prepared in a Werner state and are off-resonantly coupled to a common and non-Markovian environment. We obtain the analytical expression of the concurrence in the absence and presence of the non-selective measurements. In particular, we express our results in the strong and weak coupling regimes and examine the role of the system size, and the effect of the detuning from the cavity field frequency on the temporal behaviour of the pairwise entanglement. We show that, the detuning parameter has a positive role in the protection of entanglement in the absence of the measurement for weak coupling regime. We find that for the values of detuning parameter less than the cavity damping rate, the quantum Zeno effect is always dominant, while for the values greater than the cavity damping rate, both Zeno and anti-Zeno effects can occur, depending on the measurement intervals. We also find that the anti-Zeno effect can occur in the pairwise entanglement dynamics in the absence and presence of the detuning in the strong coupling regime.
description: 9 pages, 5 figures
Prediction of quantum many-body chaos in protactinium atom
Creators: name: Viatkina, A. V.
name: Kozlov, M. G.
name: Flambaum, V. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Energy level spectrum of protactinium atom (Pa, Z=91) is simulated with a CI calculation. Levels belonging to the separate manifolds of a given total angular momentum and parity $J^π$ exhibit distinct properties of many-body quantum chaos. Moreover, an extremely strong enhancement of small perturbations takes place. As an example, effective three-electron interaction is investigated and found to play a significant role in the system. Chaotic properties of the eigenstates allow one to develop a statistical theory and predict probabilities of different processes in chaotic systems.
description: revtex, 6p, 5fig
Swift J174540.7-290015: a new accreting binary in the Galactic Center
Creators: name: Ponti, G.
name: Jin, C.
name: De Marco, B.
name: Rea, N.
name: Rau, A.
name: Haberl, F.
name: Zelati, F. Coti
name: Bozzo, E.
name: Ferrigno, C.
name: Bower, G. C.
name: Demorest, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the identification of the new Galactic Center (GC) transient Swift J174540.7-290015 as a likely low mass X-ray binary (LMXB) located at only 16 arcsec from Sgr A*. This transient was detected on 2016 February 6th during the Swift GC monitoring, and it showed long-term spectral variations compatible with a hard to soft state transition. We observed the field with XMM-Newton on February 26th for 35 ks, detecting the source in the soft state, characterised by a low level of variability and a soft X-ray thermal spectrum with a high energy tail (detected by INTEGRAL up to ~50 keV), typical of either accreting neutron stars or black holes. We observed: i) a high column density of neutral absorbing material, suggesting that Swift J174540.7-290015 is located near or beyond the GC and; ii) a sub-Solar Iron abundance, therefore we argue that Iron is depleted into dust grains. The lack of detection of FeK absorption lines, eclipses or dipping suggests that the accretion disc is observed at a low inclination angle. Radio (VLA) observations did not detect any radio counterpart to Swift J174540.7-290015. No evidence for X-ray or radio periodicity is found. The location of the transient was observed also in the near-IR with GROND at MPG/ESO La Silla 2.2m telescope and VLT/NaCo pre- and post-outburst. Within the Chandra error region we find multiple objects that display no significant variations.
description: 15 pages, 12 figures. Accepted for publication in MNRAS
Derivation of Capture Probabilities for the Corotation Eccentric Mean Motion Resonances
Creators: name: Moutamid, Maryame El
name: Sicardy, Bruno
name: Renner, Stéfan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We study in this paper the capture of a massless particle into an isolated, first order Corotation Eccentric Resonance (CER), in the framework of the Planar, Eccentric and Restricted Three-Body problem near a m+1:m mean motion commensurability (m integer). While capture into Lindblad Eccentric Resonances (where the perturber's orbit is circular) has been investigated years ago, capture into CER (where the perturber's orbit is elliptic) has not yet been investigated in detail. Here, we derive the generic equations of motion near a CER in the general case where both the perturber and the test particle migrate. We derive the probability of capture in that context, and we examine more closely two particular cases: (i) if only the perturber is migrating, capture is possible only if the migration is outward from the primary. Notably, the probability of capture is independent of the way the perturber migrates outward; (ii) if only the test particle is migrating, then capture is possible only if the algebraic value of its migration rate is a decreasing function of orbital radius. In this case, the probability of capture is proportional to the radial gradient of migration. These results differ from the capture into Lindblad Eccentric Resonance (LER), where it is necessary that the orbits of the perturber and the test particle converge for capture to be possible. Possible applications for planetary satellites are discussed.
description: Submitted to MNRAS
ELM control with RMP: plasma response models and the role of edge peeling response
Creators: name: Liu, Yueqiang
name: Ham, C. J.
name: Kirk, A.
name: Li, Li
name: Loarte, A.
name: Ryan, D. A.
name: Sun, Youwen
name: Suttrop, W.
name: Yang, Xu
name: Zhou, Lina
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Resonant magnetic perturbations (RMP) have extensively been demonstrated as a plausible technique for mitigating or suppressing large edge localized modes (ELMs). Associated with this is a substantial amount of theory and modelling efforts during recent years. Various models describing the plasma response to the RMP fields have been proposed in the literature, and are briefly reviewed in this work. Despite their simplicity, linear response models can provide alternative criteria, than the vacuum field based criteria, for guiding the choice of the coil configurations to achieve the best control of ELMs. The role of the edge peeling response to the RMP fields is illustrated as a key indicator for the ELM mitigation in low collisionality plasmas, in various tokamak devices.
description: 32 pages, 10 figures. This is an author-created, un-copyedited version of an article submitted for publication in Plasma Physics and Controlled Fusion. IoP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it
Revealing the Merger Histories of Nearby Galaxies from their Stellar Halos with Roman
Creators: name: Smercina, Adam
Publisher: name: Zenodo
Year: 2023
Subjects: Surveys of Nearby Galaxies

description: Galaxies like the Milky Way (MW) host vast halos of stars accreted from past merger and accretion events. While the brightest structures can be studied using traditional imaging, the resolved stellar populations are the most information-rich tracers of this accreted material. The incredible wide-field of Roman, combined with the depth of JWST, will drive a new era of stellar halo science in the Local Volume. This effort will be made possible by important synergy with ground-based studies of the resolved stellar halo populations around nearby galaxies, including the upcoming Rubin LSST. From this ongoing foundational ground-based work, we have learned that the stellar halos of galaxies similar in mass to the MW are incredibly diverse. Yet, challenges unique to ground-based studies, such as poor star-galaxy separation, make more complex inferences, such as the ages, abundances, and substructure of these halos, very difficult. This is particularly relevant in galaxies' inner halos, where the disk and accreted populations are nearly indistinguishable. I will show that by utilizing the combined FOV of Roman and sensitivity of JWST, we can revolutionize our understanding of the merger histories of nearby galaxies, and decode the properties of their complex stellar halos more precisely than ever before.
The dynamics of copper intercalated molybdenum ditelluride
Creators: name: Onofrio, Nicolas
name: Guzman, David
name: Strachan, Alejandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Layered transition metal dichalcogenides are emerging as key materials in nanoelectronics and energy applications. Predictive models to understand their growth, thermomechanical properties and interactions with metals are needed in order to accelerate their incorporation into commercial products. Interatomic potentials enable large-scale atomistic simulations at the device level, beyond the range of applications of first principle methods. We present a ReaxFF reactive force field to describe molybdenum ditelluride and its interactions with copper. We optimized the force field parameters to describe the properties of layered MoTe2 in various phases, the intercalation of Cu atoms and clusters within its van der Waals gap, including a proper description of energetics, charges and mechanical properties. The training set consists of an extensive set of first principle calculations computed from density functional theory. We use the force field to study the adhesion of a single layer MoTe2 on a Cu(111) surface and the results are in good agreement with density functional theory, even though such structures were not part of the training set. We characterized the mobility of the Cu ions intercalated into MoTe2 under the presence of an external electric fields via molecular dynamics simulations. The results show a significant increase in drift velocity for electric fields of approximately 0.4 V/A and that mobility increases with Cu ion concentration.
description: 21 pages, 9 Figures
title: A Modern Standard Contract Terms Law from Reasonable Assent to Enhanced Fairness Control
title: A View on Digital Environments and Post-Transaction Assent
titleType: Subtitle
Creators: name: Grundmann, Stefan
Publisher: name: Humboldt-Universität zu Berlin
Year: 2019
Subjects: subject: 340 Recht

description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: This paper gives a birds’ eye view on the ALI Restatement on Consumer Contracts (proposal) and European, and partly also Member State, law of standard contract terms with respect to the environment where these standard contracts and assent to them appears to be particularly fleeting, namely in digital contexts. It does so, however, with a broader scope: It tries to explain why assent rules are not meaningless even in a world where most consumers and customers do not read standard contract terms, and it tries to explain how lessons could be deduced also for a meaningful and more differentiated fairness control. It argues that favouring intervention of control (ie information) intermediaries – such as consumer associations – is key and that the preservation of possibilities for negotiation should be maintained and valued. In these respects, the paper is inspired in good part by company law and capital market law dealing with parallel problems.
description: Cet article présente une vue panoramique du projet de Restatement de l’ALI sur les contrats à la consommation ainsi que sur le droit de l’Union et celui des Etats membres sur les clauses standardisées dans des contextes où le contenu de ces clauses et le consentement qui leur est donné paraissent particulièrement insaisissables, à savoir dans le monde numérique. Mais il a aussi un object plus large. Il vise à expliquer pourquoi le régime du consentement conserve un sens même dans un monde où consommateurs et clients ne lisent pas, pour la plupart, les clauses contractuelles, et tente d’expliquer comment en tirer des enseignements en vue d’un contrôle significatif et plus différencié de l’équité contractuelle. L’argument avancé est qu’en favorisant l’intervention d’un contrôle (c’est-à-dire, de l’information), les intermédiaires – telles les associations de consommateurs – sont des acteurs clé, et que des possibilités même résiduelles de négociation devraient être sauvegardées. A tous ces égards, cet article s’inspire en grande partie de la pratique des marchés des capitaux confrontés à des problèmes similaires.
A partitioned shift-without-invert algorithm to improve parallel eigensolution efficiency in real-space electronic transport
Creators: name: Feldman, Baruch
name: Zhou, Yunkai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Performance (cs.PF)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present an eigenspectrum partitioning scheme without inversion for the recently described real-space electronic transport code, TRANSEC. The primary advantage of TRANSEC is its highly parallel algorithm, which enables studying conductance in large systems. The present scheme adds a new source of parallelization, significantly enhancing TRANSEC's parallel scalability, especially for systems with many electrons. In principle, partitioning could enable super-linear parallel speedup, as we demonstrate in calculations within TRANSEC. In practical cases, we report better than five-fold improvement in CPU time and similar improvements in wall time, compared to previously-published large calculations. Importantly, the suggested scheme is relatively simple to implement. It can be useful for general large Hermitian or weakly non-Hermitian eigenvalue problems, whenever relatively accurate inversion via direct or iterative linear solvers is impractical.
Conditional entropy of glueball states
Creators: name: Bernardini, Alex E.
name: Braga, Nelson R. F.
name: da Rocha, Roldao
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The conditional entropy of glueball states is calculated using a holographic description. Glueball states are represented by a supergravity dual picture, consisting of a 5-dimensional graviton-dilaton action of a dynamical holographic AdS/QCD model. The conditional entropy is studied as a function of the glueball spin and of the mass, providing information about the stability of the glueball states.
description: 6 pages, 4 figures
Statistical properties of the maximal entropy measure for partially hyperbolic attractors
Creators: name: Castro, Armando
name: Nascimento, Teofilo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37A35, 37C30, 37C40, 37D25, 60F

description: We show the existence and uniqueness of the maximal entropy probability measure for partially hyperbolic diffeomorphisms which are semi-conjugate to nonuniformly expanding maps. Using the theory of projective metric on cones we then prove exponential decay of correlations for Hölder continuous observables and the central limit theorem for the maximal entropy probability measure. Moreover, for systems derived from solenoid we also prove the statistical stability for the maximal entropy probability measure. Finally, we use such techniques to obtain similar results in a context containing partially hyperbolic systems derived from Anosov. Paper published in ETDS in Jan. 2016.
description: Paper published in Ergodic Theory in Jan. 2016. 45 pages, 2 figures. keywords: Exponential Decay of Correlations,Systems Derived from Anosov, Systems Derived from Solenoid, Thermodynamic Formalism, Partially Hyperbolic Systems, Transfer Operator, Ergodic Theory and Dynamical Systems, published online 28 January 2016
Relativistic jet feedback in high-redshift galaxies I: Dynamics
Creators: name: Mukherjee, Dipanjan
name: Bicknell, Geoffrey V.
name: Sutherland, Ralph S.
name: Wagner, A. Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of three dimensional relativistic hydrodynamic simulations of interaction of AGN jets with a dense turbulent two-phase interstellar medium, which would be typical of high redshift galaxies. We describe the effect of the jet on the evolution of the density of the turbulent ISM. The jet driven energy bubble affects the gas to distances up to several kiloparsecs from the injection region. The shocks resulting from such interactions create a multi-phase ISM and radial outflows. One of the striking result of this work is that low power jets (P_jet < 10^{43} erg/s) although less efficient in accelerating clouds, are trapped in the ISM for a longer time and hence affect the ISM over a larger volume. Jets of higher power drill through with relative ease. Although the relativistic jets launch strong outflows, there is little net mass ejection to very large distances, supporting a galactic fountain scenario for local feedback.
description: Accepted for publication in MNRAS
title: Evaluating Geoscience Australia's Groundwater Activities - Impact and Return on Investment Study
Creators: name: L., Gow
name: Alluvium
Publisher: name: Commonwealth of Australia (Geoscience Australia)
Year: 2023
Subjects: subject: EFTF – Exploring for the Future
subject: National Groundwater Systems
subject: Alluvium Consulting Australia
subject: Evaluation of 2 case studies
subject: National Hydrogeology Mapping
subject: The Southern Stuart Corridor
subject: Groundwater
subject: National Hydrogeology Map
subject: Stuart Corridor
subject: Groundwater hydrology
subject: Return on Investment
subject: ROI
subject: EFTF
subject: Published_External

description: The Exploring for the Future program is a world leading program, delivering public geoscientific data and information required to empower decision-makers and attract future investment in resource exploration and development. Geoscience Australia engaged Alluvium Consulting Australia to quantify the impact and value of groundwater activities and outputs to the quadruple bottom line through an evaluation of 2 case studies, namely: • National Hydrogeological Mapping • The Southern Stuart Corridor project. This involved understanding the impact pathways for these case studies and the collection of data to be used in a cost benefit analysis. The work sought to provide feedback to Geoscience Australia, stakeholder groups and the broader community on the value of Geoscience Australia’s groundwater activities. The case study evaluations were facilitated by a series of specific questions, which were developed to guide data collection and the building of a knowledge base around the impact and value of the work in each case study and associated outputs. The questions broadly fell under the following categories: 1. Uptake and Usage 2. Impact 3. Benefit These evaluations were framed around the program impact pathway developed for each case study. This is a description of how inputs are used to deliver activities, which in turn result in outcomes and impacts (changes) for stakeholders, including the environment. The primary means of data collection to help answer the key evaluation questions was through online workshops and interviews with key stakeholders for each case study. These were undertaken between March 10 and March 24, 2023. In these workshops and interviews, representatives from industry, community and government agencies were asked if they could identify instances where case study program outputs were used for particular purposes, such as prioritising research or investment, advising Members of Parliament, or education and training. These examples were then explored further to understand what outcomes and benefits were derived from the use of the case study outputs, and how critical were the case study outputs to achieving those outcomes and benefits