Results for "José M. Moya"

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RELOAD+REFRESH: Abusing Cache Replacement Policies to Perform Stealthy Cache AttacksApr 12 2019Caches have become the prime method for unintended information extraction across logical isolation boundaries. Even Spectre and Meltdown rely on the cache side channel, as it provides great resolution and is widely available on all major CPU platforms. ... More
Ion-laser interactions: The most complete solutionOct 30 2012Trapped ions are considered one of the best candidates to perform quantum information processing. By interacting them with laser beams they are, somehow, easy to manipulate, which makes them an excellent choice for the production of nonclassical states ... More
Noise-assisted energy transport in electrical oscillator networks with off-diagonal dynamical disorderAug 26 2015Dec 08 2015Noise is generally thought as detrimental for energy transport in coupled oscillator networks. However, it has been shown that for certain coherently evolving systems, the presence of noise can enhance, somehow unexpectedly, their transport efficiency; ... More
Atomic force microscopy study of the surface degradation mechanisms of zirconia based ceramicsMar 30 2018Atomic force microscopy (AFM) can be used to characterise several aspects of the surface degradation and reinforcement mechanisms of zirconia based ceramics, such as crack propagation, martensitic relief formation, grains pull-out and transformation toughening. ... More
Microstructural investigation of the aging behavior of $(3Y-TZP)-Al_2O_3$ compositesOct 13 2017The low temperature autoclave aging behavior of zirconia toughened alumina composites processed by a classical powder mixing processing route was analyzed using atomic force microscopy (AFM), scanning electron microscopy and X-Ray diffraction. The transformation ... More
Discrete fractional Fourier transform: Vandermonde approachApr 19 2016Based on the definition of the Fourier transform in terms of the number operator of the quantum harmonic oscillator and in the corresponding definition of the fractional Fourier transform, we have obtained the discrete fractional Fourier transform from ... More
Percolative Mechanism of Aging in Zirconia-Containing Ceramics for Medical ApplicationsMar 29 2018Recently, several episodes of fracture of zirconia ceramic femoral heads of total hip prostheses have alarmed the medical and scientific community regarding aging problems in zirconia prostheses. Such fractures cause immediate local tissue reactions, ... More
Low-temperature ageing of zirconia-toughened alumina ceramics and its implication in biomedical implantsMar 28 2018Changes in crystalline phases resulting from low-temperature ageing of different yttria doped and non-doped zirconia-toughened alumina composites and nanocomposites were investigated under controlled humidity and temperature conditions in autoclave. A ... More
Nanostructured Ceramic Oxides with a Slow Crack Growth Resistance Close to Covalent MaterialsMar 30 2018Oxide ceramics are sensitive to slow crack growth because adsorption of water can take place at the crack tip, leading to a strong decrease of the surface energy in humid (or air) conditions. This is a major drawback concerning demanding, long-term applications ... More
Accelerated Aging in 3 mol%-Yttria-Stabilized Tetragonal Zirconia Ceramics Sintered in Reducing ConditionsMar 28 2018The aging behavior of 3-mol%-yttria-stabilized tetragonal zirconia (3Y-TZP) ceramics sintered in air and in reducing conditions was investigated at 140{\deg}C in water vapor. It was observed by X-ray diffraction (XRD) that 3Y-TZP samples sintered in reducing ... More
Structural transitions in vertically and horizontally coupled parabolic channels of Wigner crystalsJul 18 2012Structural phase transitions in two vertically or horizontally coupled channels of strongly interacting particles are investigated. The particles are free to move in the $x$-direction but are confined by a parabolic potential in the $y$-direction. They ... More
Chain-like transitions in Wigner crystals: Sequential or non-sequential?Jun 30 2015The structural transitions of the ground state of a system of repulsively interacting particles confined in a quasi-one-dimensional channel, and the effect of the interparticle interaction as well as the functional form of the confinement potential on ... More
A squeeze-like operator approach to position-dependent mass in quantum mechanicsOct 21 2013We provide a squeeze-like transformation that allows one to remove a position dependent mass from the Hamiltonian. Methods to solve the Schr\"{o}dinger equation may then be applied to find the respective eigenvalues and eigenfunctions. As an example, ... More
Second-order symmetric Lorentzian manifoldsOct 05 2005Lorentzian manifolds with vanishing second covariant derivative of the Riemann tensor are studied. Their existence, classification and explicit local expression are considered. Related issues and open questions are briefly commented.
2nd-order symmetric Lorentzian manifolds I: characterization and general resultsApr 05 2006Oct 24 2008The n-dimensional Lorentzian manifolds with vanishing second covariant derivative of the Riemann tensor (2-symmetric spacetimes) are characterized and classified. The main result is that either they are locally symmetric or they have a covariantly constant ... More
Umbilical-Type Surfaces in SpacetimeNov 29 2011Apr 19 2012A spacelike surface S immersed in a 4-dimensional Lorentzian manifold will be said to be umbilical along a direction N normal to S if the second fundamental form along N is proportional to the first fundamental form of S. In particular, S is pseudo-umbilical ... More
Sobolev spaces with respect to measures in curves and zeros of Sobolev orthogonal polynomialsMay 30 2008In this paper we obtain some practical criteria to bound the multiplication operator in Sobolev spaces with respect to measures in curves. As a consequence of these results, we characterize the weighted Sobolev spaces with bounded multiplication operator, ... More
La cosmología y los matemáticos (Cosmology and mathematicians)Feb 04 2019Free translation of the original abstract in Spanish: Some of the most relevant milestones due to, or instigated by, mathematicians concerning the creation, development and advances of Cosmology as a scientific discipline are presented and discussed. ... More
Trapped submanifolds in Lorentzian geometryDec 13 2004Jun 16 2005The concept of closed trapped surface is of paramount importance in General Relativity and other gravitational theories. However, it is a purely geometrical object. With the aim of bringing this concept to closer attention by the mathematical community, ... More
Kinematics from spectral lines for AGN outflows based on time-independent radiation-driven wind theoryAug 08 2011Aug 29 2011We build a bulk velocity-dependent photoionization model of the warm absorber of the Seyfert 1 galaxy NGC 3783. By adopting functional forms for velocity of the flow and its particle density with radius, appropriate for radiation driven winds, we compute ... More
The loop of formal power series with noncommutative coefficients under substitutionMar 12 2018The set of formal power series with coefficients in an associative but noncommutative algebra becomes a loop with the substitution product. We initiate the study of this loop by describing certain Lie and Sabinin algebras related to it. Some examples ... More
$A_\infty$ structures and Massey productsMay 19 2017Jan 11 2018We study the relationship between the higher Massey products on the cohomology $H$ of a differential graded algebra, and the $A_\infty$ structures induced on $H$ via homotopy transfer techniques.
The manifold of finite rank projections in the space L(H)Feb 08 2000Given a complex Hilbert space H and the von Neumann algebra L(H) of all bounded linear operators on H, we study the Grassmann manifold M of all projections in L(H) that have a fixed finite rank r. We take the Jordan-Banach triple theory approach which ... More
Representations for the derivative at zero and finite parts of the Barnes zeta functionMar 14 2017Jun 20 2017We provide new representations for the finite parts at the poles and the derivative at zero of the Barnes zeta function in any dimension in the general case. These representations are in the forms of series and limits. We also give an integral representation ... More
BMO from dyadic BMO for nonhomogeneous measuresJun 27 2018The usual one third trick allows to reduce problems involving general cubes to a countable family. Moreover, this covering lemma uses only dyadic cubes, which allows to use nice martingale properties in harmonic analysis problems. We consider alternatives ... More
Systematic renormalization at all orders in the DiffRen and improved Epstein-Glaser schemesJul 20 2015Proceeding by way of examples, we update the combinatorics of the treatment of Feynman diagrams with subdivergences in differential renormalization from more recent viewpoints in Epstein--Glaser renormalization in $x$-space.
Estimates for constant mean curvature graphs in MxRJun 29 2010Nov 08 2012We will discuss some sharp estimates for CMC graphs in a Riemannian 3-manifold MxR whose boundary is contained in a slice. We will start by giving sharp lower bounds for the geodesic curvature of the boundary and improve these bounds when assuming additional ... More
On the conformal duality between constant mean curvature surfaces in $\mathbb{E}(κ,τ)$ and $\mathbb{L}(κ,τ)$Jul 24 2017The main aim of this survey paper is to gather together some results concerning the Calabi type duality discovered by Hojoo Lee between certain families of (spacelike) graphs with constant mean curvature in Riemannian and Lorentzian homogeneous 3-manifolds ... More
Local Properties of Measures in Quantum Field Theory and CosmologyOct 28 2014Jan 17 2015We show that measure theoretical results concerning the Ashtekar-Lewandowski measure in the space of generalized connections have direct analogues in the context of the Bohr compactification of the line and associated Haar measure. We present also a characterization ... More
Superscaling in dilute Fermi gas and its relation to general properties of the nucleon momentum distribution in nucleiMar 01 2007The superscaling observed in inclusive electron scattering is described within the dilute Fermi gas model with interaction between the particles. The comparison with the relativistic Fermi gas (RFG) model without interaction shows an improvement in the ... More
Ermakov-Lewis symmetry in photonic latticesMar 06 2014We present a class of waveguide arrays that is the classical analog of a quantum harmonic oscillator where the mass and frequency depend on the propagation distance. In these photonic lattices refractive indices and second neighbor couplings define the ... More
Temperature dependence of the symmetry energy and neutron skins in Ni, Sn, and Pb isotopic chainsFeb 02 2017The temperature dependence of the symmetry energy for isotopic chains of even-even Ni, Sn, and Pb nuclei is investigated in the framework of the local density approximation (LDA). The Skyrme energy density functional with two Skyrme-class effective interactions, ... More
Symmetry energy of deformed neutron-rich nucleiJun 15 2012The symmetry energy, the neutron pressure and the asymmetric compressibility of deformed neutron-rich even-even nuclei are calculated on the examples of Kr and Sm isotopes within the coherent density fluctuation model using the symmetry energy as a function ... More
Ground-state properties and symmetry energy of neutron-rich and neutron-deficient Mg isotopesMay 26 2014A comprehensive study of various ground-state properties of neutron-rich and neutron-deficient Mg isotopes with $A$=20-36 is performed in the framework of the self-consistent deformed Skyrme-Hartree-Fock plus BCS method. The correlation between the skin ... More
Nuclear skin emergence in Skyrme deformed Hartree-Fock calculationsOct 02 2007A study of the charge and matter densities and the corresponding rms radii for even-even isotopes of Ni, Kr, and Sn has been performed in the framework of deformed self-consistent mean field Skyrme HF+BCS method. The resulting charge radii and neutron ... More
Coherent delocalization: Views of entanglement in different scenariosJun 01 2015Jul 21 2015The concept of entanglement was originally introduced to explain correlations existing between two spatially separated systems, that cannot be described using classical ideas. Interestingly, in recent years, it has been shown that similar correlations ... More
Jacobi photonic lattices and their SUSY partnersOct 18 2013Nov 21 2013We present a classical analog of quantum optical deformed oscillators in arrays of waveguides. The normal modes of these one-dimensional photonic crystals are given in terms of Jacobi polynomials. We show that it is possible to attack the problem via ... More
Longitudinal and Transverse Scaling Functions within the Coherent Density Fluctuation ModelMar 18 2009We extend our previous description of the superscaling phenomenon in inclusive electron scattering within the Coherent Density Fluctuation Model (CDFM). This model is a natural extension to finite nuclei of the Relativistic Fermi Gas Model (RFG) within ... More
Volume and surface contributions to the nuclear symmetry energy within the coherent density fluctuation modelJul 12 2016Jul 25 2016The volume and surface components of the nuclear symmetry energy (NSE) and their ratio are calculated within the coherent density fluctuation model (CDFM). The estimations use the results of the model for the NSE in finite nuclei based on the Brueckner ... More
Charge density distributions and related form factors in neutron-rich light exotic nucleiOct 24 2003Jan 28 2004Charge form factors corresponding to proton density distributions in exotic nuclei, such as $^{6,8}$He, $^{11}$Li, $^{17,19}$B and $^{14}$Be are calculated and compared. The results can be used as tests of various theoretical models for the exotic nuclei ... More
Age determination of the HR8799 planetary system using asteroseismologyMar 30 2010Discovery of the first planetary system by direct imaging around HR8799 has made the age determination of the host star a very important task. This determination is the key to derive accurate masses of the planets and to study the dynamical stability ... More
Semi-empirical seismic relations of A-F stars from CoRoT and Kepler legacy dataJul 07 2017Asteroseismology is witnessing a revolution thanks to high-precise asteroseismic space data (MOST, CoRoT, Kepler, BRITE), and their large ground-based follow-up programs. Those instruments have provided an unprecedented large amount of information, which ... More
Asteroseismic determination of the physical characteristics of the planetary system host HR\,8799 ($λ$ Bootis nature and age)Mar 26 2010HR\,8799 is a $\lambda$ Bootis, $\gamma$ Doradus star hosting a planetary system and a debris disk with two rings. This makes this system a very interesting target for asteroseismic studies. In particular, this work is devoted to the determination of ... More
Quaiselastic scattering from relativistic bound nucleons: Transverse-Longitudinal responseMay 14 1999Jun 07 1999Predictions for electron induced proton knockout from the $p_{1/2}$ and $p_{3/2}$ shells in $^{16}$O are presented using various approximations for the relativistic nucleonic current. Results for the differential cross section, transverse-longitudinal ... More
Strömgren photometry and spectroscopy of the Delta Scuti stars 7 Aql and 8 AqlDec 15 2009Photometric $(ubvy-\beta$) and spectroscopic observations of the $\delta$ Scuti variables \astrobj{7 Aql} and \astrobj{8 Aql} are described. The Str\"omgren standard indices and physical parameters of both stars are derived. Spectral types of F0V and ... More
A photonic crystal realization of a phase driven two-level atomJul 27 2012Jan 07 2013We propose a set of photonic crystals that realize a nonlinear quantum Rabi model equivalent to a two-level system driven by the phase of a quantized electromagnetic field. The crystals are exactly soluble in the weak-coupling regime and their dispersion ... More
Purification HamiltoniansMar 13 2019We study the Jaynes-Cummings interaction when initial mixed states, for the atom or the field, are considered. The evolved mixed field density matrix is purified to a wavefunction that describes the interaction between a quantised field and an artificial ... More
Surface properties of neutron-rich exotic nuclei: A source for studying the nuclear symmetry energySep 14 2011We study the correlation between the thickness of the neutron skin in finite nuclei and the nuclear symmetry energy for isotopic chains of even-even Ni, Sn, and Pb nuclei in the framework of the deformed self-consistent mean-field Skyrme HF+BCS method. ... More
Weak-localization effects reveals intrinsic semiconductor ground state in iodine-free TiSe$_2$Mar 29 2019Apr 06 2019Dilute impurities and growth conditions can drastically affect the transport properties of TiSe$_2$, especially below the charge density wave transition. In this paper, we discuss the effects of cooling rate, annealing time and annealing temperature on ... More
New examples of constant mean curvature surfaces in $\mathbb{S}^2\times\mathbb{R}$ and $\mathbb{H}^2\times \mathbb{R}$Apr 07 2011Dec 14 2014We construct non-zero constant mean curvature H surfaces in the product spaces $\mathbb{S}^2 \times \mathbb{R}$ and $\mathbb{H}^2\times \mathbb{R}$ by using suitable conjugate Plateau constructions. The resulting surfaces are complete, have bounded height ... More
Conformal Lie algebras via deformation theorySep 10 2018Jan 30 2019We discuss possible notions of conformal Lie algebras, paying particular attention to graded conformal Lie algebras with $d$-dimensional space isotropy: namely, those with a $\mathfrak{co}(d)$ subalgebra acting in a prescribed way on the additional generators. ... More
Magnetic particles confined in a modulated channel: structural transitions tunable by tilting a magnetic fieldJan 03 2014The ground state of colloidal magnetic particles in a modulated channel are investigated as function of the tilt angle of an applied magnetic field. The particles are confined by a parabolic potential in the transversal direction while in the axial direction ... More
Time dependent coupled harmonic oscillatorsMay 21 2019We show that, by using the quantum orthogonal functions invariant, we are able to solve a coupled of time dependent harmonic oscillators where all the time dependent frequencies are arbitrary. We do so, by transforming the time dependent Hamiltonian of ... More
Squeeze operators in classical scenariosJan 16 2019We analyse the paraxial field propagation in the realm of classical optics, showing that it can be written as the action of the fractional Fourier transform, followed by the squeeze operator applied to the initial field. Secondly, we show that a wavelet ... More
Quasiprobability distribution functions from fractional Fourier transformsFeb 16 2019We show, in a formal way, how a class of complex quasiprobability distribution functions may be introduced by using the fractional Fourier transform. This leads to the Fresnel transform of a characteristic function instead of the usual Fourier transform. ... More
A Hartree-Bose Mean-Field Approximation for IBM-3May 12 1997Dec 09 1997A Hartree-Bose mean-field approximation for the IBM-3 is presented. A Hartree- Bose transformation from spherical to deformed bosons with charge-dependent parameters is proposed which allows bosonic pair correlations and includes higher angular momentum ... More
The planetary system host HR\,8799: On its $λ$ Bootis natureMar 17 2010HR\,8799 is a $\lambda$ Bootis, $\gamma$ Doradus star hosting a planetary system and a debris disk with two rings. This makes this system a very interesting target for asteroseismic studies. This work is devoted to the determination of the internal metallicity ... More
Characterization of embedded free boundary surfaces in the ballSep 25 2016Oct 03 2016We prove that the only embedded free boundary minimal surface $\Sigma$ in $\mathbb{B}^3$ with index $4$ is the critical catenoid. This extends fundamental work of A. Fraser and R. Schoen, as well as the work of H. Tran.
GRAMPAL: A Morphological Processor for Spanish implemented in PrologJul 18 1995A model for the full treatment of Spanish inflection for verbs, nouns and adjectives is presented. This model is based on feature unification and it relies upon a lexicon of allomorphs both for stems and morphemes. Word forms are built by the concatenation ... More
Higher-dimensional kinematical Lie algebras via deformation theoryNov 17 2017May 23 2018We classify kinematical Lie algebras in dimension $D \geq 4$. This is approached via the classification of deformations of the relevant static kinematical Lie algebra. We also classify the deformations of the universal central extension of the static ... More
The classification of totally umbilical surfaces in homogeneous 3-manifoldsFeb 12 2013Feb 14 2013We obtain an exhaustive classification of totally umbilical surfaces in unimodular and non-unimodular simply-connected 3-dimensional Lie groups endowed with arbitrary left-invariant Riemannian metrics. This completes the classification of totally umbilical ... More
Generalized Calabi correspondence and complete spacelike surfacesJan 30 2013Jul 24 2017We construct a twin correspondence between graphs with prescribed mean curvature in three-dimensional Riemannian Killing submersions and spacelike graphs with prescribed mean curvature in three-dimensional Lorentzian Killing submersions. Our duality extends ... More
Large area photoelectrodes based on hybrids of CNT fibres and ALD grown TiO2Feb 11 2019Hybridisation is a powerful strategy towards the next generation of multifunctional materials for environmental and sustainable energy applications. Here, we report a new inorganic nanocarbon hybrid material prepared with atomically controlled deposition ... More
Temperature dependence of the volume and surface contributions to the nuclear symmetry energy within the coherent density fluctuation modelNov 07 2018The temperature dependence of the volume and surface components of the nuclear symmetry energy (NSE) and their ratio is investigated in the framework of the local density approximation (LDA). The results of these quantities for finite nuclei are obtained ... More
Entropy fluctuations as a mixedness quantifierSep 24 2018We propose a mixedness quantifier based on entropy fluctuations. Unlike the entropy or the purity parameter, the proposed parameter does not depend on the dimension of the Hilbert space and may be used also for quantized fields.
The von Neumann Entropy for Mixed StatesApr 25 2018The Araki-Lieb inequality is commonly used to calculate the entropy of subsystems when they are initially in pure states as this forces the entropy of the two subsystems to be equal after the complete system evolves. Then, it is easy to calculate the ... More
KvN mechanics approach to the time-dependent frequency harmonic oscillatorMay 21 2018Using the Ermakov-Lewis invariants appearing in KvN mechanics, the time-dependent frequency harmonic oscillator is studied. The analysis builds upon the operational dynamical model, from which it is possible to infer quantum or classical dynamics; thus, ... More
Elastic anomalies associated with domain switching in BaTiO$_3$ single crystals under in-situ electrical cyclingJun 09 2019The elastic response of BaTiO$_3$ single crystals during electric field cycling at room temperature has been studied using in-situ Resonant Ultrasound Spectroscopy (RUS), which allows monitoring of both the elastic and anelastic changes caused by ferroelectric ... More
Timing Analysis for DAG-based and GFP Scheduled TasksJun 04 2014Modern embedded systems have made the transition from single-core to multi-core architectures, providing performance improvement via parallelism rather than higher clock frequencies. DAGs are considered among the most generic task models in the real-time ... More
$C^{1,θ}$-Estimates on the distance of Inertial ManifoldsApr 10 2017In this paper we obtain $C^{1,\theta}$-estimates on the distance of inertial manifolds for dynamical systems generated by evolutionary parabolic type equations. We consider the situation where the systems are defined in different phase spaces and we estimate ... More
Height and area estimates for constant mean curvature graphs in E(κ,τ)-spacesApr 20 2015Aug 27 2015We obtain area growth estimates for constant mean curvature graphs in $\mathbb{E}(\kappa,\tau)$-spaces with $\kappa\leq 0$, by finding sharp upper bounds for the volume of geodesic balls in $\mathbb{E}(\kappa,\tau)$. We focus on complete graphs and graphs ... More
A new approximation to the geometric-arithmetic indexMar 16 2017The concept of geometric-arithmetic index was introduced in the chemical graph theory recently, but it has shown to be useful. The aim of this paper is to obtain new inequalities involving the geometric-arithmetic index $GA_1$ and characterize graphs ... More
Gromov hyperbolicity of minor graphsJun 19 2015If $X$ is a geodesic metric space and $x_1,x_2,x_3\in X$, a geodesic triangle $T=\{x_1,x_2,x_3\}$ is the union of the three geodesics $[x_1x_2]$, $[x_2x_3]$ and $[x_3x_1]$ in $X$. The space $X$ is $\delta$-hyperbolic (in the Gromov sense) if any side ... More
Definition of frame-invariant Soret coefficients for ternary mixturesOct 25 2018Jan 07 2019The definition of the Soret coefficient of a binary mixture includes a concentration prefactor, $x(1-x)$ when mol fraction $x$ is used, or $w(1-w)$ when mass fraction $w$ is used. In this paper the physical reasons behind this choice are reviewed, emphasizing ... More
Characterization of embedded free boundary surfaces in the ballSep 25 2016We prove that the only embedded free boundary minimal surface $\Sigma$ in $\mathbb{B}^3$ with index $4$ is the critical catenoid. This extends fundamental work of A. Fraser and R. Schoen, as well as the work of H. Tran.
Area estimates and rigidity of capillary $H-$surfaces in three-manifolds with boundaryNov 10 2015Apr 18 2016We obtain a bound for the area of a capillary $H-$surface in a three-manifold with umbilic boundary and controlled sectional curvature. We then analyze the geometry when this area bound is realized, and obtain rigidity theorems. As a side product, we ... More
Extremal Domains on Hadamard manifoldsApr 28 2015We investigate the geometry and topology of extremal domains in a manifold with negative sectional curvature. An extremal domain is a domain that supports a positive solution to an overdetermined elliptic problem (OEP for short). We consider two types ... More
Kinematical Lie algebras via deformation theoryNov 16 2017May 23 2018We present a deformation theory approach to the classification of kinematical Lie algebras in 3+1 dimensions and present calculations leading to the classifications of all deformations of the static kinematical Lie algebra and of its universal central ... More
Extended $D=3$ Bargmann supergravity from a Lie algebra expansionApr 29 2019In this paper we show how the method of Lie algebra expansions may be used to obtain, in a simple way, both the extended Bargmann Lie superalgebra and the Chern-Simons action associated to it in three dimensions, starting from $D=3$, $\mathcal{N}=2$ superPoincar\'e ... More
A number-phase Wigner functionAug 14 2002One of the most prominent quasiprobability functions in quantum mechanics is the Wigner function that gives the right marginal probability functions if integrated over position or momentum. Here we depart from the definition of the position-momentum Wigner ... More
Gauss-Bonnet theorem in sub-Riemannian Heisenberg space $H^1$Oct 26 2012We prove a version of Gauss-Bonnet theorem in sub-Riemannian Heisenberg space $H^1$. The sub-Riemannian distance makes $H^1$ a metric space and consenquently with a spherical Hausdorff measure. Using this measure, we define a Gaussian curvature at points ... More
The internal structure of overpressured, magnetized, relativistic jetsSep 02 2016Sep 12 2016This work presents the first characterization of the internal structure of overpressured steady superfast magnetosonic relativistic jets in connection with their dominant type of energy. To this aim, relativistic magnetohydrodynamic simulations of different ... More
Total and linearly polarized synchrotron emission from overpressured magnetized relativistic jetsApr 05 2018We present relativistic magnetohydrodynamic (RMHD) simulations of stationary overpressured magnetized relativistic jets which are characterized by their dominant type of energy, namely internal, kinetic, or magnetic. Each model is threaded by a helical ... More
Cyclic homogeneous Riemannian manifoldsJul 21 2014Apr 29 2015In spin geometry, traceless cyclic homogeneous Riemannian manifolds equipped with a homogeneous spin structure can be viewed as the simplest manifolds after Riemannian symmetric spin spaces. In this paper, we give some characterizations and properties ... More
DynaSLAM: Tracking, Mapping and Inpainting in Dynamic ScenesJun 14 2018Aug 15 2018The assumption of scene rigidity is typical in SLAM algorithms. Such a strong assumption limits the use of most visual SLAM systems in populated real-world environments, which are the target of several relevant applications like service robotics or autonomous ... More
Superscaling and Neutral Current Quasielastic Neutrino-Nucleus Scattering beyond the Relativistic Fermi Gas ModelJun 01 2007The superscaling analysis is extended to include quasielastic (QE) scattering via the weak neutral current of neutrinos and antineutrinos from nuclei. The scaling function obtained within the coherent density fluctuation model (used previously in calculations ... More
Developing a Correlation Indices to Identify Coordinated Cyber-Attacks on Power GridsJul 03 2017May 29 2018Increasing reliance on Information and Communication Technology~(ICT) exposes the power grid to cyber-attacks. In particular, Coordinated Cyber-Attacks (CCAs) are considered highly threatening and difficult to defend against, because they (i) possess ... More
Superscaling predictions for neutrino-induced charged-current charged pion production at MiniBooNEMar 27 2012Superscaling approximation (SuSA) predictions to neutrino-induced charged-current charged pion production in the \Delta-resonance region are explored under MiniBooNE experimental conditions. The results obtained within SuSA for the flux-averaged double-differential ... More
Superscaling and Charge-Changing Neutrino Scattering from Nuclei in the $\boldsymbol Δ$-Region beyond the Relativistic Fermi Gas ModelFeb 29 2008The superscaling analysis using the scaling function obtained within the coherent density fluctuation model is extended to calculate charge-changing neutrino and antineutrino scattering on $^{12}$C at energies from 1 to 2 GeV not only in the quasielastic ... More
Homogeneous spin Riemannian manifolds with the simplest Dirac operatorApr 22 2015Feb 09 2016We show the existence of nonsymmetric homogeneous spin Riemannian manifolds whose Dirac operator is like that on a Riemannian symmetric spin space. Such manifolds are exactly the homogeneous spin Riemannian manifolds $(M,g)$ which are traceless cyclic ... More
Boosting Handwriting Text Recognition in Small Databases with Transfer LearningApr 04 2018In this paper we deal with the offline handwriting text recognition (HTR) problem with reduced training datasets. Recent HTR solutions based on artificial neural networks exhibit remarkable solutions in referenced databases. These deep learning neural ... More
Momentum distributions in medium and heavy exotic nucleiNov 12 2009We study nucleon momentum distributions of even-even isotopes of Ni, Kr, and Sn in the framework of deformed self-consistent mean-field Skyrme HF+BCS method, as well as of theoretical correlation methods based on light-front dynamics and local density ... More
Compact stable surfaces with constant mean curvature in Killing submersionsApr 02 2016A Killing submersion is a Riemannian submersion from a 3-manifold to a surface, both connected and orientable, whose fibres are the integral curves of a Killing vector field, not necessarily unitary. The first part of this paper deals with the classification ... More
Note on (conformally) semi-symmetric spacetimesAug 22 2009Sep 01 2009We provide a simple proof that conformally semi-symmetric spacetimes are actually semi-symmetric. We also present a complete refined classification of the semi-symmetric spacetimes.
Singularity theorems for warped products and the stability of spatial extra dimensionsJan 22 2019Apr 01 2019New singularity theorems are derived for generic warped-product spacetimes of any dimension. The main purpose is to analyze the stability of (compact or large) extra dimensions against dynamical perturbations. To that end, the base of the warped product ... More
Umbilical spacelike submanifolds of arbitrary co-dimensionJan 21 2017Feb 15 2017Given a semi-Riemannian manifold, we give necessary and sufficient conditions for a Riemannian submanifold of arbitrary co-dimension to be umbilical along normal directions. We do that by using the so-called \emph{total shear tensor}, i.e., the trace-free ... More
Impact of gaps in the asteroseismic characterization of pulsating stars. I. On the efficiency of pre-whiteningJan 08 2018Feb 08 2018It is known that the observed distribution of frequencies in CoRoT and Kepler {\delta} Scuti stars has no parallelism with any theoretical model. Pre-whitening is a widespread technique in the analysis of time series with gaps from pulsating stars located ... More
Elastic magnetic electron scattering from deformed nucleiMar 22 2019Magnetic form factors corresponding to elastic electron scattering from odd-A nuclei are presented. The calculations are carried out in plane-wave Born approximation. The one-body properties are obtained in a deformed self-consistent mean-field calculation ... More
Few layer 2D pnictogens catalyze the alkylation of soft nucleophiles with estersMar 12 2019Group 15 elements in zero oxidation state (P, As, Sb and Bi), also called pnictogens, are rarely used in catalysis due to the difficulties associated in preparing well-structured and stable materials. Here, we report on the synthesis of highly exfoliated, ... More
Pyramids and monomial blowing-upsSep 23 2004We show that a convex pyramid in R^n with apex at 0 can be brought to the first quadrant by a finite sequence of monomial blowing-ups if and only if its intersection with the opposite of the first quadrant is 0. The proof is non-trivially derived from ... More