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Results for "Geronimo Perez"

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Versatile Hall magnetometer with variable sensitivity assembly for characterization of the magnetic properties of nanoparticlesMay 14 2019A Hall magnetometer with variable sensitivity is constructed to measure the magnetic properties of magnetic nanoparticles manufactured by different methods. This novel magnetometer can also be used to measure bulk materials and samples in liquids. The ... More
WKB and Turning Point Theory for Second Order Difference Equations: External Fields and Strong Asymptotics for Orthogonal PolynomialsMay 11 2009Sep 18 2009A LG-WKB and Turning point theory is developed for three term recurrence formulas associated with monotonic recurrence coefficients. This is used to find strong asymptotics for certain classical orthogonal polynomials including Wilson polynomials.
Measures for orthogonal polynomials with unbounded recurrence coefficientsAug 22 2014Aug 27 2014Systems of orthogonal polynomials whose recurrence coefficients tend to infinity are considered. A summability condition is imposed on the coefficients and the consequences for the measure of orthogonality are discussed. Also discussed are asymptotics ... More
Algebro-Geometric Solutions of a Discrete System Related to the Trigonometric Moment ProblemAug 04 2004We derive theta function representations of algebro-geometric solutions of a discrete system governed by a transfer matrix associated with (an extension of) the trigonometric moment problem studied by Szego and Baxter. We also derive a new hierarchy of ... More
Planetary Spectrum Generator: an accurate online radiative transfer suite for atmospheres, comets, small bodies and exoplanetsMar 06 2018May 23 2018We have developed an online radiative-transfer suite ( applicable to a broad range of planetary objects (e.g., planets, moons, comets, asteroids, TNOs, KBOs, exoplanets). The Planetary Spectrum Generator (PSG) can synthesize ... More
Comparison between 2-D and 3-D codes in dynamical simulations of gas flow in barred galaxiesOct 15 2007Context: One of the ways to determine the contribution of the dark halo to the gravitational potential of a galaxy is the study of non-circular (streaming) motions and the associated gas shocks in the bar region. These motions, determined by the potential ... More
Brief Introduction to Flavor PhysicsNov 11 2009We consider the standard model (SM) quark flavor sector. We study its structure in a spurionic, symmetry oriented approach. The SM picture of flavor and CP violation is now experimentally verified, hence strong bounds on beyond the SM flavor structure ... More
W mass at LEP2May 21 2003Recent studies to finalize the systematic error estimates on the measurement of the mass of the W boson at LEP2 are reviewed. Results including a new preliminary value from Aleph are updated together with the world average which is now 80.426 +- 0.034GeV/c2. ... More
Spectral decomposition method of dialog state tracking via collective matrix factorizationJun 16 2016The task of dialog management is commonly decomposed into two sequential subtasks: dialog state tracking and dialog policy learning. In an end-to-end dialog system, the aim of dialog state tracking is to accurately estimate the true dialog state from ... More
Statistical and entanglement entropy for black holes in quantum geometryMay 28 2014Jun 04 2014We analyze the relationship between entanglement (or geometric) entropy with statistical mechanical entropy of horizon degrees of freedom when described in the framework of isolated horizons in loop quantum gravity. We show that, once the relevant degrees ... More
Hilbert Space Average Method and adiabatic quantum searchOct 08 2008Jan 19 2009We discuss some aspects related to the so-called Hilbert space Average Method, as an alternative to describe the dynamics of open quantum systems. First we present a derivation of the method which does not make use of the algebra satisfied by the operators ... More
Introduction to Loop Quantum Gravity and Spin FoamsSep 15 2004Feb 09 2005These notes are a didactic overview of the non perturbative and background independent approach to a quantum theory of gravity known as loop quantum gravity. The definition of real connection variables for general relativity, used as a starting point ... More
Gravity, Dimension, Equilibrium, & ThermodynamicsMar 30 2006Is it actually possible to interpret gravitation as space's property in a pure classical way. Then, we note that extended self-gravitating system equilibrium depends directly on the number of dimension of the space in which it evolves. Given those precisions, ... More
Measured speed versus true speedMay 10 2010The theoretical predictions, derived from the Lorentz and the Tangherlini transformations, for the one-way speed of any physical entity are confronted with the corresponding expressions for the one-way measured speed obtained from a gedanken experiment. ... More
Lepton Masses and Mixing Angles with Spontaneously Broken O(3) Flavor SymmetrySep 25 2000Jan 11 2001We present a model based on an O(3) flavor symmetry and a minimal extension of the scalar sector to induce hierarchical breaking, O(3) -> O(2) -> SO(2) -> nothing. The model naturally accounts for all the known lepton parameters and yields various interesting ... More
Searches for Exotics at HERANov 24 1999Searches for contact interactions, leptoquark bosons and excited fermions carried out at the HERA ep collider are presented here. The searches are based on ~ 40 pb^-1 of e+ p data per experiment collected at a centre of mass energy ~ 300 GeV. First results ... More
Dynamics of Anisotropic UniversesMar 30 2006We present a general study of the dynamical properties of Anisotropic Bianchi Universes in the context of Einstein General Relativity. Integrability results using Kovalevskaya exponents are reported and connected to general knowledge about Bianchi dynamics. ... More
Dynamic Code Coverage with Progressive Detail LevelsJun 19 2013Nowadays, locating software components responsible for observed failures is one of the most expensive and error-prone tasks in the software development process. To improve the debugging process efficiency, some effort was already made to automatically ... More
Spin foam quantization of SO(4) Plebanski's actionMar 15 2002Nov 21 2002The goal of this work is two-fold. In the first part of this paper we regard classical Plebanski's action as a BF action supplemented by constraints. We introduce a spin foam model for Riemannian general relativity by systematically implementing these ... More
On the experimental determination of the one-way speed of lightFeb 22 2011Apr 22 2011In this contribution the question of the isotropy of the one-way speed of light from an experimental perspective is addressed. In particular, we analyze two experimental methods commonly used in its determination. The analysis is aimed at clarifying the ... More
A physicist's view of the universe: a philosophical approachDec 11 2010Without a doubt many problems in physics arise as a consequence of our philosophical conception of the world. In this contribution however we endeavor to alleviate this scenario by putting forward a philosophical approach under which some of the most ... More
The Physics Surrounding the Michelson-Morley Experiment and a New Æther TheoryApr 05 2010Dec 15 2010From the customary view the Michelson-Morley experiment is used to expose the failure of the aether theory. The key point in this experiment is the \emph{fringe shift} of the interference pattern. Regularly, the fringe shift calculations are only presented ... More
Beyond the Standard Model at HERA: Status and ProspectsJan 17 2006An overview of experimental results on searches for new phenomena at HERA is presented. The complementarity with searches performed at other experiments is discussed and the prospects for a discovery, using the full HERA data to be delivered until mid-2007, ... More
Physics and ConsciousnessOct 17 1995Some contributions of physics towards the understanding of consciousness are described. As recent relevant models, associative memory neural networks are mentioned. It is shown that consciousness and quantum physics share some properties. Two existing ... More
No firewalls in quantum gravity: the role of discreteness of quantum geometry in resolving the information loss paradoxOct 26 2014Jan 27 2015In an approach to quantum gravity where space-time arises from coarse graining of fundamentally discrete structures, black hole formation and subsequent evaporation can be described by a unitary evolution without the problems encountered by the standard ... More
The spin-foam-representation of loop quantum gravityJan 23 2006The problem of background independent quantum gravity is the problem of defining a quantum field theory of matter and gravity in the absence of an underlying background geometry. Loop quantum gravity (LQG) is a promising proposal for addressing this difficult ... More
A note on eigenvector error bounds for polynomial eigenvalue problemsAug 12 2018Aug 14 2018The standard approach for finding eigenvalues and eigenvectors of matrix polynomials starts by embedding the coefficients of the polynomial into a matrix pencil, known as linearization. Building on the pioneering work of Nakatsukasa and Tisseur, we present ... More
Dialog state tracking, a machine reading approach using a memory-enhanced neural networkJun 13 2016Jun 29 2016In an end-to-end dialog system, the aim of dialog state tracking is to accurately estimate a compact representation of the current dialog status from a sequence of noisy observations produced by the speech recognition and the natural language understanding ... More
The Preferred System of Reference ReloadedMay 26 2014Jun 02 2014According to Karl Popper assumptions are statements used to construct theories. During the construction of a theory whether the assumptions are either true or false turn out to be irrelevant in view of the fact that, actually, they gain their scientific ... More
Spin polarized two-dimensional electron gas embedded in semimagnetic quantum well : ground state, spin responses, spin excitations, Raman spectrumOct 27 2008We present theoretical aspects of spin polarized two dimensional electron gas (SP2DEG) which can be achieved in doped semimagnetic quantum wells. This original model system has been recently studied by magneto Raman scattering experiments has given a ... More
Lepton Masses and Mixing in a Left-Right Symmetric Model with a TeV-scale GravityAug 10 2002Nov 10 2002We construct a left-right symmetric (LRS) model in five dimensions which accounts naturally for the lepton flavor parameters. The fifth dimension is described by an orbifold, S_1/Z_2 times Z'_2, with a typical size of order TeV^{-1}. The fundamental scale ... More
Searches for R-parity Violating Supersymmetry at HERANov 28 2003Searches for R-parity violating supersymmetry performed at the H1 experiment are presented. Emphasis is put on searches for squarks, which may be resonantly produced at the HERA $ep$ collider in supersymmetry where R-parity is violated. The preliminary ... More
Modularity Classes and Boundary Effects in Multivariate Stochastic DominanceJul 17 2018Aug 26 2018Hadar and Russell (1974) and Levy and Paroush (1974) presented sufficient conditions for multivariate stochastic dominance when the distributions involved are continuous with compact support. Further generalizations involved either independence assumptions ... More
Truncation of stellar disks in galaxies at z~1Oct 10 2004We report here the first evidence for stellar disk truncation at high redshift, based on surface photometry of a sample of 16 high redshift (0.6 < z < 1.0) disk galaxies from the GOODS HST/ACS data. The radial profiles are best fit by a double exponential ... More
A marvelous contribution from Michel Henon to globular cluster's study : the isochrone clusterNov 17 2014A survey of Michel Henon contributions to the study of globular cluster systems.
Vlavov and Poisson equations in the context of self-gravitating systemsFeb 20 2004We present Vlasov's equation and its association with Poisson's equation in the context of modelling self-gravitating systems such as Globular Clusters or Galaxies. We first review the classical hypotheses of the model. We continue with a presentation ... More
Equilibrium of stellar dynamical systems in the context of the Vlasov-Poisson modelJun 14 2007This short review is devoted to the problem of the equilibrium of stellar dynamical systems in the context of the Vlasov-Poisson model. In a first part we will review some classical problems posed by the application of the Vlasov-Poisson model to the ... More
The Spin Foam Approach to Quantum GravityMay 09 2012This article reviews the present status of the spin foam approach to the quantization of gravity. Special attention is payed to the pedagogical presentation of the recently introduced new models for four dimensional quantum gravity. The models are motivated ... More
The new spin foam models and quantum gravityMay 04 2012In this article we give a systematic definition of the recently introduced spin foam models for four dimensional quantum gravity reviewing the main results on their semiclassical limit on fixed discretizations.
Rare B decays Potential of SuperBNov 22 2010The study of rare B-decays at SuperB provides unique opportunities to understand the Standard Model and constrain new physics. It is discussed the new physics potential of the B -> K nu nu_bar and B -> K^{\ast} nu nu_bar system from the proposed SuperB ... More
On the regularization ambiguities in loop quantum gravitySep 29 2005One of the main achievements of LQG is the consistent quantization of the Wheeler-DeWitt equation which is free of UV problems. However, ambiguities associated to the intermediate regularization procedure lead to an apparently infinite set of possible ... More
Information of a qubit interacting with a multilevel environmentNov 11 2009We consider the interaction of a small quantum system (a qubit) with a structured environment consisting on many levels. The qubit will experience a decoherence process, which implies that its initial information will be transferred to the environment. ... More
Basic deformation theory of smooth formal schemesJan 18 2008We provide the main results of a deformation theory of smooth formal schemes. First we deal with the case of global lifting of smooth morphisms. We prove that the obstruction to the existence of a global lifting lies in a Ext^1 group. Then we study uniqueness ... More
Implications of Neutrino Masses on the $K_{L}\toπ^{0}ν\barν$ DecayJul 01 1999Oct 03 1999We calculate the different contributions to the decay $K_{L}\to \pi ^{0}\nu \bar{\nu}$ that arise if the neutrinos are massive. In spite of a chiral enhancement factor, we find that these contributions are negligibly small. Compared to the CP violating ... More
The $K_L\toπ^0ν\barν$ Decay in Models of Extended Scalar SectorJan 05 2000We calculate new contributions to the $K_L\to\pi^0\nu\bar\nu$ decay in models where neutrino Majorana masses require an extension of the scalar sector. First, we study a model where the neutrino mass is induced by the vacuum expectation value of an SU(2)-triplet ... More
Linear vertex-kernels for several dense ranking r-CSPsMar 16 2012Oct 25 2012A Ranking r-Constraint Satisfaction Problem (ranking r-CSP) consists of a ground set of vertices V, an arity r >= 2, a parameter k and a constraint system c, where c is a function which maps rankings of r-sized subsets of V to {0,1}. The objective is ... More
Spin Foam Models for Quantum GravityJan 27 2003Feb 14 2003In this article we review the present status of the spin foam formulation of non-perturbative (background independent) quantum gravity. The article is divided in two parts. In the first part we present a general introduction to the main ideas emphasizing ... More
Finiteness of a spinfoam model for euclidean quantum general relativityNov 16 2000We prove that a certain spinfoam model for euclidean quantum general relativity, recently defined, is finite: all its all Feynman diagrams converge. The model is a variant of the Barrett-Crane model, and is defined in terms of a field theory over SO(4) ... More
Predicting Yelp Star Reviews Based on Network Structure with Deep LearningDec 11 2017In this paper, we tackle the real-world problem of predicting Yelp star-review rating based on business features (such as images, descriptions), user features (average previous ratings), and, of particular interest, network properties (which businesses ... More
Bispectrality of multivariable Racah-Wilson polynomialsMay 10 2007Mar 04 2009We construct a commutative algebra A_x of difference operators in R^p, depending on p+3 real parameters which is diagonalized by the multivariable Racah polynomials R_p(n;x) considered by Tratnik [27]. It is shown that for specific values of the variables ... More
Asymptotics of q-difference equationsMay 17 2004Mar 28 2006In this paper we develop an asymptotic analysis for formal and actual solutions of q-difference equations, under a regularity assumption. In particular, evaluations of regular solutions of regular q-difference equations have an exponential growth rate ... More
On Baxter's difference systemsApr 10 2010We study the asymptotics of solutions of a difference system introduced by Baxter by using the general method for the asymptotic representation of such solutions due to Benzaid and Lutz. Some results of Tauberian type are obtained in the case when the ... More
The Fourier extension method and discrete orthogonal polynomials on an arc of the circleJan 11 2019The Fourier extension method, also known as the Fourier continuation method, is a method for approximating non-periodic functions on an interval using truncated Fourier series with period larger than the interval on which the function is defined. When ... More
On Certain Two Dimensional Integrals that Appear In Conformal Field TheoryMar 20 2000In a first part, we generalize a theorem for an holomorphic $\times $ anti-holomorphic integrand, in the case of 2 dimensional Fourier transform. In the second part, we derive p-uple conformal integrals the integrand of which are linear combination of ... More
A hypergeometric basis for the Alpert multiresolution analysisMar 03 2014Nov 14 2014We construct an explicit orthonormal basis of piecewise ${}_{i+1}F_{i}$ hypergeometric polynomials for the Alpert multiresolution analysis. The Fourier transform of each basis function is written in terms of ${}_2F_3$ hypergeometric functions. Moreover, ... More
Optimization of <= 200 um pitch CZT detectors for future high-resolution X-ray instrumentation in astrophysicsJan 14 2015Cadmium Zinc Telluride and Cadmium Telluride are the detector materials of choice for the detection of X-rays in the X-ray energy band E >= 5keV with excellent spatial and spectral resolution and without cryogenic cooling. Owing to recent breakthroughs ... More
Two Variable Orthogonal Polynomials on the Bi-circle and Structured MatricesDec 14 2006We consider bivariate polynomials orthogonal on the bicircle with respect to a positive linear functional. The lexicographical and reverse lexicographical orderings are used to order the monomials. Recurrence formulas are derived between the polynomials ... More
Bernstein-Szegő measures, Banach algebras, and scattering theoryAug 01 2014Sep 05 2015We give a simple and explicit description of the Bernstein-Szego type measures associated with Jacobi matrices which differ from the Jacobi matrix of the Chebyshev measure in finitely many entries. We also introduce a class of measures M which parametrizes ... More
The comb representation of compact ultrametric spacesFeb 26 2016We call a \emph{comb} a map $f:I\to [0,\infty)$, where $I$ is a compact interval, such that $\{f\ge \varepsilon\}$ is finite for any $\varepsilon$. A comb induces a (pseudo)-distance $\dtf$ on $\{f=0\}$ defined by $\dtf(s,t) = \max_{(s\wedge t, s\vee ... More
On Alpert MultiwaveletsSep 20 2013The multiresolution analysis of Alpert is considered. Explicit formulas for the entries in the matrix coefficients of the refinement equation are given in terms of hypergeometric functions. These entries are shown to solve generalized eigenvalue equations ... More
Parameters associated with bivariate Bernstein-Szego measures on the bi-circleFeb 04 2011We consider measures supported on the bi-circle and review the recurrence relations satisfied by the orthogonal polynomials associated with these measures constructed using the lexicographical or reverse lexicographical ordering. New relations are derived ... More
Fejér-Riesz factorizations and the structure of bivariate polynomials orthogonal on the bi-circleJun 07 2012We give a complete characterization of the positive trigonometric polynomials Q(\theta,\phi) on the bi-circle, which can be factored as Q(\theta,\phi)=|p(e^{i\theta},e^{i\phi})|^2 where p(z,w) is a polynomial nonzero for |z|=1 and |w|\leq 1. The conditions ... More
Supercritical percolation on large scale-free random treesDec 11 2012We consider Bernoulli bond percolation on a large scale-free tree in the supercritical regime, meaning informally that there exists a giant cluster with high probability. We obtain a weak limit theorem for the sizes of the next largest clusters, extending ... More
Two variable deformations of the Chebyshev measureDec 17 2006We construct one and two parameter deformations of the two dimensional Chebyshev polynomials with simple recurrence coefficients, following the algorithm in [3]. Using inverse scattering techniques, we compute the corresponding orthogonality measures. ... More
Codes as fractals and noncommutative spacesJul 28 2011We consider the CSS algorithm relating self-orthogonal classical linear codes to q-ary quantum stabilizer codes and we show that to such a pair of a classical and a quantum code one can associate geometric spaces constructed using methods from noncommutative ... More
QCD vacuum structureNov 03 2000Nov 13 2000Several issues related to the structure of the QCD vacuum are reviewed. We concentrate mostly on results concerning instantons and center vortices.
Statistics on Riemann zerosDec 01 2011We numerically study the statistical properties of differences of zeros of Riemann zeta function and L-functions predicted by the theory of the e\~ne product. In particular, this provides a simple algorithm that computes any non-real Riemann zeros from ... More
Bose-Einstein Condensation in a Constant Magnetic FieldNov 15 1999We discuss the occurrence of Bose-Einstein condensation in systems of noninteracting charged particles in three in one dimensions and in presence of an external magnetic field. In the one dimensional, as well as in the magnetic field cases, although not ... More
Towards an optimal flow: Density-of-states-informed replica-exchange simulationsOct 01 2015Replica exchange (RE) is one of the most popular enhanced-sampling simulations technique in use today. Despite widespread successes, RE simulations can sometimes fail to converge in practical amounts of time, e.g., when sampling around phase transitions, ... More
Medium-modified evolution of multiparticle production in jets in heavy-ion collisionsNov 18 2008May 22 2009The energy evolution of medium-modified average multiplicities and multiplicity fluctuations in quark and gluon jets produced in heavy-ion collisions is investigated from a toy QCD-inspired model. In this model, we use modified splitting functions accounting ... More
Single Inclusive Distribution and Two-Particle Correlations Inside One Jet at "Modified Leading Logarithmic Approximation" of Quantum Chromodynamics II : Steepest Descent Evaluation at Small XJul 20 2006The MLLA single inclusive distribution inside one high energy (gluon) jet at small x is estimated by the steepest descent method. Its analytical expression is obtained outside the "limiting spectrum". It is then used to evaluate 2-particle correlations ... More
Time reversal symmetry in cosmology and the quantum creation of universesJan 03 2019The classical evolution of the universe can be seen as a parametrised worldline of the minisuperspace, with the time variable $t$ being the parameter that parametrises the worldline. The time reversal symmetry of the classical action implies then that ... More
Reply to the comment on "Black hole entropy and isolated horizons thermodynamics"Apr 19 2012The comment arXiv:1204.2729v1 is completely wrong. The author makes serious mistakes in calculations and judgement. The errors are made at the level of basic undergraduate statistical mechanics.
Black hole entropy and isolated horizons thermodynamicsJul 07 2011Dec 20 2011We present a statistical mechanical calculation of the thermodynamical properties of (non rotating) isolated horizons. The introduction of Planck scale allows for the definition of an universal horizon temperature (independent of the mass of the black ... More
Polynomial kernels for Proper Interval Completion and related problemsMar 29 2011Apr 14 2011Given a graph G = (V,E) and a positive integer k, the Proper Interval Completion problem asks whether there exists a set F of at most k pairs of (V \times V)\E such that the graph H = (V,E \cup F) is a proper interval graph. The Proper Interval Completion ... More
Spin Foam Quantization and AnomaliesMar 06 2003Mar 03 2009The most common spin foam models of gravity are widely believed to be discrete path integral quantizations of the Plebanski action. However, their derivation in present formulations is incomplete and lower dimensional simplex amplitudes are left open ... More
Conformal field theory of a space-filling string of gravitational ancestryJan 08 2016We present a classical conformal field theory on an arbitrary two-dimensional spacetime background. The dynamical object is a space-filling string, and the evolution may be thought as occurring on the manifold of the conformal group. The theory is a "descendant" ... More
Space-filling branes of gravitational ancestryAug 13 2015Jan 04 2016We introduce a new kind of space-filling brane, which we term "G-brane" because its action is a descendant of the gravitational action. The G-brane may be thought of as the remanent of the gravitational field when the propagating gravitons are removed. ... More
Quantum gravity at the cornerJul 09 2015We investigate the quantum geometry of $2d$ surface $S$ bounding the Cauchy slices of 4d gravitational system. We investigate in detail and for the first time the symplectic current that naturally arises boundary term in the first order formulation of ... More
Dissipationless collapse of a set of N massive particlesOct 30 2003The formation of self-gravitating systems is studied by simulating the collapse of a set of N particles which are generated from several distribution functions. We first establish that the results of such simulations depend on N for small values of N. ... More
Addressing mathematical inconsistency: Cantor and Godel refutedFeb 24 2010This article critically reappraises arguments in support of Cantor's theory of transfinite numbers. The following results are reported: i) Cantor's proofs of nondenumerability are refuted by analyzing the logical inconsistencies in implementation of the ... More
An overview of f(R) theoriesJul 26 2011Nov 10 2011A brief introduction to theories of the gravitational field with a Lagrangian that is a function of the scalar curvature is given. The emphasis will be placed in formal developments, while comparison to observation will be discussed in the chapter by ... More
Dark energy from quantum gravity discretenessNov 14 2017Apr 18 2018We argue that discreteness at the Planck scale (naturally expected to arise from quantum gravity) might manifest in the form of minute violations of energy-momentum conservation of the matter degrees of freedom when described in terms of (idealized) smooth ... More
El Triangulo de Platon y El Factor Gnomonico: Una aplicacion a los oraculos de HerodotoMay 24 2013A modification to the gnomonic factor using the concept of triangle of Plato is presented. With the aid of the platonic gnomonic factor (fgp) as we called it, we find that the oracles mentioned by Herodotus in his History, Dodona in Greece and Ammon in ... More
Solution to Briot and Bouquet problem on singularities of differential equationsFeb 10 2018Mar 06 2018We solve Briot and Bouquet problem (1856) on the existence of non-monodromic (multivalued) solutions for singularities of differential equations in the complex domain. The solution is an application of hedgehog dynamics for indifferent irrational fixed ... More
Project Success in Agile Development ProjectsNov 18 2017The paper explains and clarifies the differences between Waterfall and Agile development methodologies, establishes what criteria could be taken into account to properly define project success within the scope of software development projects, and finally ... More
Three dimensional loop quantum gravity: coupling to point particlesFeb 25 2004Mar 19 2004We consider the coupling between three dimensional gravity with zero cosmological constant and massive spinning point particles. First, we study the classical canonical analysis of the coupled system. Then, we go to the Hamiltonian quantization generalizing ... More
Mixed weak type estimates: Examples and counterexamples related to a problem of E. SawyerJul 20 2016We study mixed weighted weak-type inequalities for families of functions, which can be applied to study classical operators in harmonic analysis. Our main theorem extends the key result from D. Cruz-Uribe, J.M. Martell and C. Perez, Weighted weak-type ... More
A note on holomorphic extensionsSep 04 2000We give a criterium of holomorphy for some type formal power series. This gives a stronger form of a Rothstein's type extension theorem for a particular ring of holomorphic functions.
Generalized Fredholm properties for invariant pseudodifferential operatorsJan 24 2011Apr 12 2011We define classes of pseudodifferential operators on $G$-bundles with compact base and give a generalized $L^2$ Fredholm theory for invariant operators in these classes in terms of von Neumann's $G$-dimension. We combine this formalism with a generalized ... More
The fractional Brownian motion property of the turbulent refractive within Geometric OpticsJun 25 2003We introduce fractional Brownian motion processes (fBm) as an alternative model for the turbulent index of refraction. These processes allow to reconstruct most of the refractive index properties, but they are not differentiable. We overcome the apparent ... More
Proceedings of the 2013 European School of High-Energy Physics (ESHEP 2013), Paradfurdo, Hungary, 5-18 Jun 2013Sep 07 2016The European School of High-Energy Physics is intended to give young physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lecture notes on the Standard Model of electroweak ... More
Proceedings of the 2013 CERN - Latin-American School of High-Energy Physics (CLASHEP 2013), Arequipa, Peru, 6-19 Mar 2013May 03 2016The CERN - Latin-American School of High-Energy Physics is intended to give young physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lecture notes on the Standard Model of ... More
Natural Neutrino Masses and Mixings from Warped GeometryMay 30 2008Jan 28 2009We demonstrate that flavor symmetries in warped geometry can provide a natural explanation for large mixing angles and economically explain the distinction between the quark and lepton flavor sectors. We show how to naturally generate Majorana neutrino ... More
Control of cancellations that restrain the growth of a binomial recursionJun 07 2010We study a recursion that generates real sequences depending on a parameter $x$. Given a negative $x$ the growth of the sequence is very difficult to estimate due to canceling terms. We reduce the study of the recursion to a problem about a family of ... More
Constraining Models of New Physics in Light of Recent Experimental Results on $a_{ψK_S}$Mar 28 2001Aug 22 2001We study extensions of the Standard Model where the charged current weak interactions are governed by the CKM matrix and where all tree-level decays are dominated by their Standard Model contribution. We constrain both analytically and numerically the ... More
Dialog state tracking, a machine reading approach using Memory NetworkJun 13 2016Oct 13 2016In an end-to-end dialog system, the aim of dialog state tracking is to accurately estimate a compact representation of the current dialog status from a sequence of noisy observations produced by the speech recognition and the natural language understanding ... More
The fuzzy gene filter: A classifier performance assesmentAug 23 2011The Fuzzy Gene Filter (FGF) is an optimised Fuzzy Inference System designed to rank genes in order of differential expression, based on expression data generated in a microarray experiment. This paper examines the effectiveness of the FGF for feature ... More
The Quark and Gluon Structure of the ProtonAug 06 2012Aug 07 2012In this article we present a review of the structure of the proton and the current status of our knowledge of the parton distribution functions (PDFs). The lepton-nucleon scattering experiments which provide the main constraints in PDF extractions are ... More
Inclusive hadronic distributions in jets and sub-jets with jet axis from color currentNov 27 2008The hadronic $\kt$-spectrum and the gluon to quark average multiplicity ratio $r=N_g/N_q$ inside a high energy sub-jet are determined from a precise definition of the jet axis, including corrections of relative magnitude ${\cal O}(\sqrt{\alpha_s})$ with ... More