Results for "G. H. Aguilar"

total 181712took 0.17s
Experimental determination of multipartite entanglement with incomplete informationDec 07 2014Sep 25 2015Multipartite entanglement is very poorly understood despite all the theoretical and experimental advances of the last decades. Preparation, manipulation and identification of this resource is crucial for both practical and fundamental reasons. However, ... More
Experimental entanglement redistribution under decoherence channelsJul 15 2014When an initially entangled pair of qubits undergoes local decoherence processes, there are a number of ways in which the original entanglement can spread throughout the multipartite system consisting of the two qubits and their environments. Here we ... More
Distillation of quantum steeringJun 03 2019We show -- both theoretically and experimentally -- that Einstein-Podolsky-Rosen steering can be distilled. We present a distillation protocol that -- in the asymptotic infinite-copy limit -- outputs a perfect singlet assemblage even for inputs that are ... More
The evolution of white dwarfs with a varying gravitational constantJan 05 2011Within the theoretical framework of some modern unification theories the constants of nature are functions of cosmological time. White dwarfs offer the possibility of testing a possible variation of G and, thus, to place constraints to these theories. ... More
Stability of Ca-montmorillonite hydrates: A computer simulation studyOct 17 2005Classic simulations are used to study interlayer structure, swelling curves, and stability of Ca-montmorillonite hydrates. For this purpose, NPzzT$ and MuPzzT ensembles are sampled for ground level and given burial conditions. For ground level conditions, ... More
Stability of K-montmorillonite hydrates: Hybrid MC simulationsNov 09 2005NPzzT and MuPzzT simulations of K-montmorillonite hydrates were performed employing hybrid Monte Carlo simulations. Two condition sets were studied, P=1 atm and T= 300 K (ground level conditions), and P=600 atm and T= 394 K; this last condition mimics ... More
Experimental multipartite entanglement and randomness certification of the W state in the quantum steering scenarioSep 01 2016Recently [Cavalcanti et al. Nat Commun 6, 7941 (2015)] proposed a method to certify the presence of entanglement in asymmetric networks, where some users do not have control over the measurements they are performing. Such asymmetry naturally emerges in ... More
Flow of Quantum Correlations from a Two-Qubit System to its EnvironmentSep 25 2013The open-system dynamics of entanglement plays an important role in the assessment of the robustness of quantum information processes and also in the investigation of the classical limit of quantum mechanics. Here we show that, subjacent to this dynamics, ... More
Detection of entanglement in asymmetric quantum networks and multipartite quantum steeringDec 24 2014Feb 14 2016The future of quantum communication relies on quantum networks composed by observers sharing multipartite quantum states. The certification of multipartite entanglement will be crucial to the usefulness of these networks. In many real situations it is ... More
Linear-optical simulation of the cooling of a cluster-state Hamiltonian systemJan 16 2014Mar 26 2014A measurement-based quantum computer could consist of a local-gapped Hamiltonian system, whose thermal states --at sufficiently low temperature-- are universal resources for the computation. Initialization of the computer would correspond to cooling the ... More
Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino oscillation hypothesisSep 18 2006Nov 12 2009We investigate the extent to which leptonic CP-violation in (3+2) sterile neutrino models leads to different oscillation probabilities for $\bar{\nu}_{\mu}\to\bar{\nu}_e$ and $\nu_{\mu}\to\nu_e$ oscillations at MiniBooNE. We are using a combined analysis ... More
Improved Methods for Identifying Moving GroupsJul 08 1997We present a new procedure for the identification of moving groups. It is a combination of two independent member selection methods. One is a modern implementation of a classical convergent point method for proper motion data. The other objectively identifies ... More
White dwarf constraints on a varying $G$Aug 25 2013A secular variation of $G$ modifies the structure and evolutionary time scales of white dwarfs. Using an state-of-the-art stellar evolutionary code, an up-to-date pulsational code, and a detailed population synthesis code we demonstrate that the effects ... More
The gravitational wave radiation of pulsating white dwarfs revisited: the case of BPM 37093 and PG 1159-035Sep 13 2005We compute the emission of gravitational radiation from pulsating white dwarfs. This is done by using an up-to-date stellar evolutionary code coupled with a state-of-the-art pulsational code. The emission of gravitational waves is computed for a standard ... More
Experimental investigation of linear-optics-based quantum target detectionApr 12 2019The development of new techniques to improve measurements is crucial for all sciences. By employing quantum systems as sensors to probe some physical property of interest allows the application of quantum resources, such as coherent superpositions and ... More
Quantum bits and superposition displaced Fock states of the cavity fieldAug 14 2002We study the effects of counter rotating terms in the interaction of quantized light with a two-level atom, by using the method of small rotations. We give an expression for the wave function of the composed system atom plus field and point out one initial ... More
Generalized qubits of the vibrational motion of a trapped ionApr 01 2013We present a method to generate qubits of the vibrational motion of an ion. The method is developed in the non-rotating wave approximation regime, therefore we consider regimes where the dynamics has not been studied. Because the solutions are valid for ... More
Shiga Toxin Detection Methods : A Short ReviewDec 17 2013The Shiga toxins comprise a family of related protein toxins secreted by certain types of bacteria. Shigella dysenteriae, some strain of Escherichia coli and other bacterias can express toxins which caused serious complication during the infection. Shiga ... More
Non-Markovianity through accessible informationFeb 21 2014Jun 04 2014The degree of non-Markovianity of quantum processes has been characterized in several different ways in the recent literature. However, the relationship between the non-Markovian behavior and the flow of information between the system and the environment ... More
Habitable Zones with Stable Orbits for Planets around Binary SystemsJan 06 2014May 21 2014A general formulation to compute habitable zones (HZ) around binary stars is presented. A HZ in this context must satisfy two separate conditions: a radiative one and one of dynamical stability. For the case of single stars, the usual concept of circumstellar ... More
Regions of Dynamical Stability for Discs and Planets in Binary Stars of the Solar NeighborhoodAug 09 2012Aug 17 2012Using the results of Pichardo \et (2005,2008), we determine regions of dynamical stability where planets (or discs in general) could survive in stable orbits around binary stellar systems. We produce this study for 161 binary stars in the Solar neighborhood ... More
Experimental investigation of dynamical invariants in bipartite entanglementMar 09 2011The non-conservation of entanglement, when two or more particles interact, sets it apart from other dynamical quantities like energy and momentum. It does not allow the interpretation of the subtle dynamics of entanglement as a flow of this quantity between ... More
Non-Markovianity through flow of information between a system and an environmentOct 09 2014Nov 24 2014Exchange of information between a quantum system and its surrounding environment plays a fundamental role in the study of the dynamics of open quantum systems. Here we discuss the role of the information exchange in the non-Markovian behavior of dynamical ... More
On the origin of high-field magnetic white dwarfsSep 12 2012High-field magnetic white dwarfs have been long suspected to be the result of stellar mergers. However, the nature of the coalescing stars and the precise mechanism that produces the magnetic field are still unknown. Here we show that the hot, convective, ... More
Near-Infrared Variability of Low Mass Stars in IC 1396A and TR 37May 03 2019We have monitored nearly a square degree in IC 1396A/Tr 37 over 21 epochs extending over 2014 - 2016 for sources variable in the JHK bands. In our data, 65 +\- 8 % of previously identified cluster members show variations, compared with < 0.3% of field ... More
Double degenerate mergers as progenitors of high-field magnetic white dwarfsFeb 02 2012High-field magnetic white dwarfs have been long suspected to be the result of stellar mergers. However, the nature of the coalescing stars and the precise mechanism that produces the magnetic field are still unknown. Here we show that the hot, convective, ... More
Heralded single photons based on spectral multiplexing and feed-forward controlMar 06 2017We propose and experimentally demonstrate a novel approach to a heralded single photon source based on spectral multiplexing (SMUX) and feed-forward-based spectral manipulation of photons created by means of spontaneous parametric down-conversion in a ... More
A white dwarf cooling age of 8 Gyr for NGC 6791 from physical separation processesMay 13 2010NGC 6791 is a well studied open cluster1 that it is so close to us that can be imaged down to very faint luminosities. The main sequence turn-off age (~8 Gyr) and the age derived from the termination of the white dwarf cooling sequence (~6 Gyr) are significantly ... More
A generic anti-QCD jet taggerSep 04 2017Oct 05 2017New particles beyond the Standard Model might be produced with a very high boost, for instance if they result from the decay of a heavier particle. If the former decay hadronically, then their signature is a single massive fat jet which is difficult to ... More
Traces of a triboson resonanceJul 29 2016Sep 15 2016We show that the relatively small but coincident excesses observed around 2 TeV in the ATLAS Run 1 and Run 2 hadronic diboson searches --- when a cut on the number of tracks in the fat jets is not applied --- and the null results of all remaining high-mass ... More
Massless particle creation in a f(R) expanding universeAug 16 2011Jun 15 2013In this paper we present an exact solution to the spectrum of massless particle creation for a power law expansion of the scale factor of the form $t^{2n/3}$ for real scalar particles in a flat and matter dominated universe. Such an evolution follows ... More
Na-montmorillonite hydrates under ethane rich reservoirs: NPzzT and MuPzzT simulationsNov 10 2005Na-montmorillonite hydrates in presence of ethane molecules are studied by means of hybrid Monte Carlo simulations in the NPzzT and MuPzzT ensembles. The NPzzT ensemble allows us to study the interlaminar distance as a function of water and ethane content. ... More
Collider-independent top quark forward-backward asymmetries: standard model predictionsSep 27 2012Dec 20 2012We compute, for top quark pair production at the Tevatron and the Large Hadron Collider, the collider-independent forward-backward asymmetries defined in [1] in the standard model at next-to-leading order in QCD, including also electromagnetic and weak ... More
Designing slower glasses by manipulating their local structureDec 03 2018Feb 05 2019Glasses remain an elusive and poorly understood state of matter. For example, it is not clear how we can design an efficient macroscopic glass former by tuning the properties of its microscopic building blocks. In this paper, we propose a simple directional ... More
Neutrino Masses, Mixing and New Physics EffectsOct 27 2003Dec 09 2003We introduce a parametrization of the effects of radiative corrections from new physics on the charged lepton and neutrino mass matrices, studying how several relevant quantities describing the pattern of neutrino masses and mixing are affected by these ... More
CP violation from new quarks in the chiral limitMar 25 1997Jan 24 1999We characterize CP violation in the SU(2)xU(1) model due to an extra vector-like quark or sequential family, giving special emphasis to the chiral limit m_{u,d,s}=0. In this limit, CP is conserved in the three generation Standard Model (SM), thus implying ... More
Extension of the correspondence principle in relativistic quantum mechanicsJul 12 2019In this paper we apply the Bohr's correspondence principle to analize the asymptotic behavior of the Klein-Gordon and Dirac probability densities. It is found that in the non-relativistic limit, the densities reduce to their respective classical single-particle ... More
Emergence of the pointer basis through the dynamics of correlationsMar 22 2012Oct 04 2012We use the classical correlation between a quantum system being measured and its measurement apparatus to analyze the amount of information being retrieved in a quantum measurement process. Accounting for decoherence of the apparatus, we show that these ... More
Entanglement between more than two hundred macroscopic atomic ensembles in a solidMar 14 2017We create a multi-partite entangled state by storing a single photon in a crystal that contains many large atomic ensembles with distinct resonance frequencies. The photon is re-emitted at a well-defined time due to an interference effect analogous to ... More
Inductive limits of C*-algebras and compact quantum metrics spacesJul 27 2018Given a unital inductive limit of C*-algebras for which each C*-algebra of the inductive sequence comes equipped with a compact quantum metric of Rieffel, we produce sufficient conditions to build a compact quantum metric on the inductive limit from the ... More
Convergence of Quotients of AF Algebras in Quantum Propinquity by Convergence of IdealsAug 25 2016Feb 22 2018We introduce a topology on the ideal space of inductive limits of C*-algebras built by a topological inverse limit of the Fell topologies on the C*-algebras of the given inductive sequence and we produce conditions for when this topology agrees with the ... More
Convergence of Quotients of AF Algebras in Quantum Propinquity by Convergence of IdealsAug 25 2016We provide conditions for when quotients of AF algebras are quasi-Leibniz quantum compact metric spaces building from our previous work with F. Latremoliere. Given a C*-algebra, the ideal space may be equipped with natural topologies. Next, we impart ... More
AF algebras in the quantum Gromov-Hausdorff propinquity spaceDec 07 2016Aug 09 2017For unital AF algebras with faithful tracial states, we provide criteria for convergence in the quantum Gromov-Hausdorff propinquity. For any unital AF algebra, we introduce new Leibniz Lip-norms using quotient norms. Next, we show that any unital AF ... More
Convergence of Quotients of AF Algebras in Quantum Propinquity by Convergence of IdealsAug 25 2016Dec 08 2016We provide conditions for when quotients of AF algebras are quasi-Leibniz quantum compact metric spaces building from our previous work with F. Latremoliere. Given a C*-algebra, the ideal space may be equipped with natural topologies. Next, we impart ... More
Quantum metrics on the tensor product of a commutative C*-algebra and an AF C*-algebraJul 17 2019Given a compact metric space X and a unital AF algebra A equipped with a faithful tracial state, we place quantum metrics on the tensor product of C(X) and A given established quantum metrics on C(X) and A from work with Bice and Latr\'emoli\`ere. We ... More
A Letter of Intent to Build a MiniBooNE Near Detector: BooNEOct 14 2009There is accumulating evidence for a difference between neutrino and antineutrino oscillations at the $\sim 1$ eV$^2$ scale. The MiniBooNE experiment observes an unexplained excess of electron-like events at low energies in neutrino mode, which may be ... More
AF algebras in the quantum Gromov-Hausdorff propinquity spaceDec 07 2016For unital AF algebras with faithful tracial states, we provide criteria for convergence in the quantum propinquity, which extend results from our previous work with F. Latremoliere. For unital AF algebras, we introduce new Leibniz Lip-norms motivated ... More
The fundamental group of partial compactifications of the complement of a real line arrangementApr 25 2019Let $\mathscr{A}$ be a real projective line arrangement and $M(\mathscr{A})$ its complement in $\mathbb{CP}^2$. We obtain an explicit expression in terms of Randell's generators of the meridians around the exceptional divisors in the blow-up $\bar{X}$ ... More
Spin phonon coupling in frustrated magnet CdCr$_2$O$_4$Oct 22 2007Mar 06 2008The infrared phonon spectrum of the spinel CdCr2O4 is measured as a function temperature from 6 K to 300K. The triply degenerate Cr phonons soften in the paramagnetic phase as temperature is lowered below 100 K and then split into a singlet and doublet ... More
Heat conduction in systems with Kolmogorov-Arnold-Moser phase space structureSep 28 2012We study heat conduction in a billiard channel formed by two sinusoidal walls and the diffusion of particles in the corresponding channel of infinite length; the latter system has an infinite horizon, i.e., a particle can travel an arbitrary distance ... More
Characterizing the Galactic warp with Gaia: I. The tilted ring model with a twistMay 23 2014We explore the possibility of detecting and characterizing the warp of the stellar disc of our Galaxy using synthetic Gaia data. The availability of proper motions and, for the brightest stars radial velocities, adds a new dimension to this study. A family ... More
Entropy for the quantized field in the atom-field interaction: Initial mixed fieldAug 15 2016We study the atom-field interaction when the field is in a mixture of coherent states. We show that in this case it is possible to calculate analytically the field entropy for times of the order of twice the collapse time. Such analytical results are ... More
Electromagnons in multiferroic RMn2O5 compounds and their microscopic originJun 06 2008We summarize the existing experimental data on electromagnons in multiferroic RMn2O5 compounds, where R denotes a rare earth ion, Y or Bi, and discuss a realistic microscopic model of these materials based on assumption that the microscopic mechanism ... More
IR Phonon signatures of multiferroicity in TbMn$_{2}$O$_{5}$May 16 2006Aug 07 2006The infrared (IR) active phonons in multiferroic TbMn$_2$O$_5$ are studied as a function of temperature. Most of the symmetry allowed IR modes polarized along the \textit{a} and \textit{b} crystal axes are observed and the behavior of several \textit{b} ... More
Quantification of Healthy Red Blood Cell Removal and Preferential Invasion of Reticulocytes in Macaca mulatta during Plasmodium cynomolgi InfectionJun 25 2017Jun 30 2017We derived an ordinary differential equation model to capture the disease dynamics during blood-stage malaria. The model was directly derived from an earlier age-structured partial differential equation model. The original model was simplified due to ... More
Electromagnons in multiferroic YMn2O5 and TbMn2O5Aug 31 2006Sep 22 2006Based on temperature dependent far infrared transmission spectra of YMn2O5 and TbMn2O5 single crystals, we report the observation of electric dipole-active magnetic excitations, or electromagnons, in these multiferroics. Electromagnons are found to be ... More
On the possible observational signatures of white dwarf dynamical interactionsJul 01 2014We compute the possible observational signatures of white dwarf dynamical interactions in dense stellar environments. Specifically, we compute the emission of gravitational waves, and we compare it with the sensitivity curves of planned space-borne gravitational ... More
White dwarf mergers and the origin of R Coronae Borealis starsOct 09 2011We present a nucleosynthesis study of the merger of a 0.4 solar masses helium white dwarf with a 0.8 solar masses carbon-oxygen white dwarf, coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing code. The ... More
Spitzer IRS Spectroscopy of the 10 Myr-old EF Cha Debris Disk: Evidence for Phyllosilicate-Rich Dust in the Terrestrial ZoneApr 07 2011We describe Spitzer IRS spectroscopic observations of the 10 Myr-old star, EF Cha. Compositional modeling of the spectra from 5 {\mu}m to 35 {\mu}m confirms that it is surrounded by a luminous debris disk with LD/L\star ~ 10-3, containing dust with temperatures ... More
Photometric determination of the mass accretion rates of pre-main sequence stars. III. Results in the Large Magellanic CloudNov 03 2011We present a multi-wavelength study of three star forming regions, spanning the age range 1-14 Myr, located between the 30 Doradus complex and supernova SN1987A in the Large Magellanic Cloud (LMC). We reliably identify about 1000 pre-main sequence (PMS) ... More
An upper limit to the secular variation of the gravitational constant from white dwarf starsMay 10 2011A variation of the gravitational constant over cosmological ages modifies the main sequence lifetimes and white dwarf cooling ages. Using an state-of-the-art stellar evolutionary code we compute the effects of a secularly varying G on the main sequence ... More
Terahertz Dielectric Analysis and Spin-Phonon Coupling in Multiferroic GeV$_4$S$_8$Jan 19 2017Jul 03 2017We present an investigation of the multiferroic lacunar spinel compound GeV$_4$S$_8$ using time-domain terahertz spectroscopy. We find three absorptions which either appear or shift at the antiferromagnetic transition temperature, T$_N = 17$ K, as S=1 ... More
Temporal correlations of superconductivity above the transition temperature in La$_{2-x}$Sr$_x$CuO$_4$ probed by terahertz spectroscopyOct 10 2011The nature of the underdoped pseudogap regime of the high-temperature superconductors has been a matter of long-term debate. On quite general grounds, one expects that due to their low superfluid densities and short correlation lengths, superconducting ... More
Magnus Expansion and Three-Neutrino Oscillations in MatterFeb 03 2003Nov 12 2005We present a semi-analytical derivation of the survival probability of solar neutrinos in the three generation scheme, based on the Magnus approximation of the evolution operator of a three level system, and assuming a mass hierarchy among neutrino mass ... More
Smoothed Particle Hydrodynamics simulations of the core-degenerate scenario for Type Ia supernovaeMar 09 2015Apr 15 2015The core-degenerate (CD) scenario for type Ia supernovae (SN Ia) involves the merger of the hot core of an asymptotic giant branch (AGB) star and a white dwarf, and might contribute a non-negligible fraction of all thermonuclear supernovae. Despite its ... More
The size of chi = arg (-Vts Vtb* Vcs* Vcb) and physics beyond the Standard ModelJun 14 2004Nov 11 2004We analyse the allowed range of values of chi, both in the Standard Model and in models with New Physics, pointing out that a relatively large value of chi, e.g. of order lambda, is only possible in models where the unitarity of the 3x3 Cabibbo-Kobayashi-Maskawa ... More
On the possibility of fast vortices in the cuprates: A vortex plasma model analysis of THz conductivity and diamagnetism in La$_{2-x}$Sr$_{x}$CuO$_4$Mar 12 2011Oct 07 2011We present measurements of the fluctuation superconductivity in an underdoped thin film of La$_{1.905}$Sr$_{0.095}$CuO$_4$ using time-domain THz spectroscopy. We compare our results with measurements of diamagnetism in a similarly doped crystal of La$_{2-x}$Sr$_x$CuO$_4$. ... More
Lithium production in the merging of white dwarf starsMay 11 2012The origin of R Coronae Borealis stars has been elusive for over 200 years. Currently, two theories for their formation have been presented. These are the Final Flash scenario, in which a dying asymptotic giant branch (AGB) star throws off its atmosphere ... More
Nucleosynthesis during the Merger of White Dwarfs and the Origin of R Coronae Borealis StarsJul 12 2011Jul 13 2011Many hydrogen deficient stars are characterised by surface abundance patterns that are hard to reconcile with conventional stellar evolution. Instead, it has been suggested that they may represent the result of a merger episode between a helium and a ... More
FS Aurigae: a Triple Cataclysmic Variable System containing Precessing, Magnetic White DwarfSep 29 2010We present here results of numerical calculations demonstrating that the very long periodic variability detected in the Cataclysmic Variable FS Aur can be the result of eccentricity modulation of a close binary (CB) orbit induced by the presence of a ... More
Kinematic identification of young nearby moving groups from a sample of chromospherically active stars in the RAVE catalogSep 14 2018The purpose of this study is the identification of young ($1< age < 100$ Myr), nearby ($d \leqslant100$ pc) moving groups (YNMGs) through their kinematic signature. YNMGs could be the result of the recent dispersal of young embedded clusters, such that ... More
Energy invariance in capillary systemsApr 28 2017We demonstrate the continuous translational invariance of the energy of a capillary surface in contact with reconfigurable solid boundaries. We present a theoretical approach to find the energy-invariant equilibria of spherical capillary surfaces in contact ... More
Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino BeamApr 27 2001Aug 10 2001A search for muon anti-neutrino to electron anti-neutrino oscillations was conducted by the Liquid Scintillator Neutrino Detector at the Los Alamos Neutron Science Center using muon anti-neutrinos from positive muon decay at rest. A total excess of 87.9 ... More
Semi-numerical solution for a fractal telegraphic dual-porosity fluid flow modelAug 14 2016In this work, we present a semi-numerical solution of a fractal telegraphic dual-porosity fluid flow model. It combines Laplace transform and finite difference schemes. The Laplace transform handles the time variable whereas the finite difference method ... More
Deep 1.1 mm-wavelength imaging of the GOODS-S field by AzTEC/ASTE - I. Source catalogue and number countsMar 09 2010[Abridged] We present the first results from a 1.1 mm confusion-limited map of the GOODS-S field taken with AzTEC on the ASTE telescope. We imaged a 270 sq. arcmin field to a 1\sigma depth of 0.48 - 0.73 mJy/beam, making this one of the deepest blank-field ... More
AzTEC millimeter survey of the COSMOS field - III. Source catalog over 0.72 sq. deg. and plausible boosting by large-scale structureMay 04 2011We present a 0.72 sq. deg. contiguous 1.1mm survey in the central area of the COSMOS field carried out to a 1sigma ~ 1.26 mJy/beam depth with the AzTEC camera mounted on the 10m Atacama Submillimeter Telescope Experiment (ASTE). We have uncovered 189 ... More
Results of the engineering run of the Coherent Neutrino Nucleus Interaction Experiment (CONNIE)Apr 05 2016The CONNIE detector prototype is operating at a distance of 30 m from the core of a 3.8 GW$_{\rm th}$ nuclear reactor with the goal of establishing Charge-Coupled Devices (CCD) as a new technology for the detection of coherent elastic neutrino-nucleus ... More
The CONNIE experimentAug 04 2016Oct 10 2016The CONNIE experiment uses fully depleted, high resistivity CCDs as particle detectors in an attempt to measure for the first time the Coherent Neutrino-Nucleus Elastic Scattering of antineutrinos from a nuclear reactor with silicon nuclei.This talk, ... More
Automatic Neuron Detection in Calcium Imaging Data Using Convolutional NetworksJun 23 2016Calcium imaging is an important technique for monitoring the activity of thousands of neurons simultaneously. As calcium imaging datasets grow in size, automated detection of individual neurons is becoming important. Here we apply a supervised learning ... More
Automatic Neuron Detection in Calcium Imaging Data Using Convolutional NetworksJun 23 2016Dec 21 2016Calcium imaging is an important technique for monitoring the activity of thousands of neurons simultaneously. As calcium imaging datasets grow in size, automated detection of individual neurons is becoming important. Here we apply a supervised learning ... More
Using L/E Oscillation Probability DistributionsJul 11 2014This paper explores the use of $L/E$ oscillation probability distributions to compare experimental measurements and to evaluate oscillation models. In this case, $L$ is the distance of neutrino travel and $E$ is a measure of the interacting neutrino's ... More
A Combined $ν_μ\to ν_e$ and $\barν_μ\to \barν_e$ Oscillation Analysis of the MiniBooNE ExcessesJul 19 2012Aug 27 2012The MiniBooNE experiment at Fermilab reports results from an analysis of the combined $\nu_e$ and $\bar \nu_e$ appearance data from $6.46 \times 10^{20}$ protons on target in neutrino mode and $11.27 \times 10^{20}$ protons on target in antineutrino mode. ... More
Fundamental Vibrational Transition of CO during the Outburst of EX Lupi in 2008Dec 23 2010We report monitoring observations of the T Tauri star EX Lupi during its outburst in 2008 in the CO fundamental band at 4.6-5.0 um. The observations were carried out at the VLT and the Subaru Telescope at six epochs from April to August 2008, covering ... More
Hot subdwarf stars - galactic orbits and distribution perpendicular to the planeAug 20 1997The spatial distribution and the population nature of subdwarf B type stars in the galaxy is investigated based on the kinematics of these stars. The orbits of 41 stars have been calculated using a galactic mass model. These are well behaved and 10 stars ... More
Introducing Data Primitives: Data Formats for the SKED FrameworkJun 25 2017Background: The past few years have seen a tremendous increase in the size and complexity of datasets. Scientific and clinical studies must to incorporate datasets that cross multiple spatial and temporal scales to describe a particular phenomenon. The ... More
A white dwarf merger as progenitor of the anomalous X-ray pulsar 4U 0142+61?Jun 25 2013It has been recently proposed that massive fast-rotating highly-magnetized white dwarfs could describe the observational properties of some of Soft Gamma-Ray Repeaters (SGRs) and Anomalous X-Ray Pulsars (AXPs). Moreover, it has also been shown that high-field ... More
Z-scan confocal method for indirect focusing locationApr 26 2017We present a new technique that we have defined as the z-scan confocal method to determine the absolute location and size of the focal spot in a tight focused ultrashort laser pulse. The method permits to accurately position a target in the focal spot ... More
Project 1640 Observations of Brown Dwarf GJ 758 B: Near-Infrared Spectrum and Atmospheric ModelingMar 03 2017Mar 17 2017The nearby Sun-like star GJ 758 hosts a cold substellar companion, GJ 758 B, at a projected separation of $\lesssim$30 AU, previously detected in high-contrast multi-band photometric observations. In order to better constrain the companion's physical ... More
Colossal magnon-phonon coupling in multiferroic Eu$_{0.75}$Y$_{0.25}$MnO$_3$Apr 26 2007Jul 24 2007We report the spectra of magnetically induced electric dipole absorption in Eu$_{0.75}$Y$_{0.25}$MnO$_3$ from temperature dependent far infrared spectroscopy (10-250 cm$^{-1}$). These spectra, which occur only in the $e||a$ polarization, consist of two ... More
Origin of electromagnon excitations in \textit{R}MnO$_3$Nov 18 2008Jan 29 2009The origin of electromagnon excitations in cycloidal \textit{R}MnO$_3$ is explained in terms of the Heisenberg coupling between spins despite the fact that the static polarization arises from the much weaker Dzyaloshinskii-Moriya (DM) exchange interaction. ... More
Predictions for the detection of Tidal Streams with Gaia using Great Circle MethodsSep 27 2016The Gaia astrometric mission may offer an unprecedented opportunity to discover new tidal streams in the Galactic halo. To test this, we apply nGC3, a great-circle-cell count method that combines position and proper motion data to identify streams, to ... More
MBM 12: young protoplanetary discs at high galactic latitudeJan 12 2009(abridged) We present Spitzer infrared observations to constrain disc and dust evolution in young T Tauri stars in MBM 12, a star-forming cloud at high latitude with an age of 2 Myr and a distance of 275 pc. The region contains 12 T Tauri systems, with ... More
Detector for measuring the $π^+\to e^+ν_e$ branching fractionMay 11 2015The PIENU experiment at TRIUMF is aimed at a measurement of the branching ratio $R^{e/\mu}$ = ${\Gamma\big((\pi^{+} \rightarrow e^{+} \nu_{e}) + (\pi^{+} \rightarrow e^{+} \nu_{e}\gamma)\big)}/{\Gamma\big((\pi^{+} \rightarrow \mu^{+} \nu_{\mu})+(\pi^{+} ... More
Evidence for a merger of binary white dwarfs: the case of GD 362Apr 10 2007GD 362 is a massive white dwarf with a spectrum suggesting a H-rich atmosphere which also shows very high abundances of Ca, Mg, Fe and other metals. However, for pure H-atmospheres the diffusion timescales are so short that very extreme assumptions have ... More
Predictions for the detection of Tidal Streams with Gaia using Great Circle MethodsSep 27 2016May 31 2017The Gaia astrometric mission may offer an unprecedented opportunity to discover new tidal streams in the Galactic halo. To test this, we apply nGC3, a great-circle-cell count method that combines position and proper motion data to identify streams, to ... More
Genetic Studies of Physiological Traits with Their Application to Sleep ApneaOct 27 2014Advances of modern sensing and sequencing technologies generate a deluge of high dimensional space-temporal physiological and next-generation sequencing (NGS) data. Physiological traits are observed either as continuous random functions, or on a dense ... More
Dark Matter Search in Nucleon, Pion, and Electron Channels from a Proton Beam Dump with MiniBooNEJul 16 2018Mar 29 2019A search for sub-GeV dark matter produced from collisions of the Fermilab 8 GeV Booster protons with a steel beam dump was performed by the MiniBooNE-DM Collaboration using data from $1.86 \times 10^{20}$ protons on target in a dedicated run. The MiniBooNE ... More
Low Mass WIMP Searches with a Neutrino Experiment: A Proposal for Further MiniBooNE RunningNov 09 2012A proposal submitted to the FNAL PAC is described to search for light sub-GeV WIMP dark matter at MiniBooNE. The possibility to steer the beam past the target and into an absorber leads to a significant reduction in neutrino background, allowing for a ... More
Dark Matter Search in Nucleon, Pion, and Electron Channels from a Proton Beam Dump with MiniBooNEJul 16 2018A search for sub-GeV dark matter produced from collisions of the Fermilab 8 GeV Booster protons with a steel beam dump was performed by the MiniBooNE-DM collaboration using data from $1.86 \times 10^{20}$ protons on target in a dedicated run. The MiniBooNE ... More
Running bumps from stealth bosonsJan 24 2018Mar 13 2018For the "stealth bosons" $S$, light boosted particles with a decay $S \to A A \to q \bar q q \bar q$ into four quarks and reconstructed as a single fat jet, the groomed jet mass has a strong correlation with groomed jet substructure variables. Consequently, ... More