Results for "Vaidehi S. Paliya"

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The High Redshift Blazar S5 0836+71: A Broadband StudyFeb 25 2015A broadband study of the high redshift blazar S5 0836+71 (z = 2.172) is presented. Multi-frequency light curves show multiple episodes of X-ray and $\gamma$-ray flares, while optical-UV fluxes show little variations. During the GeV outburst, the highest ... More
Fermi-Large Area Telescope Observations of the Exceptional Gamma-ray Flare from 3C 279 in 2015 JuneJul 11 2015An exceptional $\gamma$-ray outburst from 3C 279 is detected by {\it Fermi}-Large Area Telescope (LAT) in 2015 June. In the energy range of 0.1$-$300 GeV, the highest flux measured is (39.1$\pm$2.5) $\times$ 10$^{-6}$ \phflux, which is the highest $\gamma$-ray ... More
A GeV-TeV Measurement of the Extragalactic Background LightMar 07 2019Mar 11 2019The Extragalactic Background Light (EBL) can be probed via the absorption imprint it leaves in the spectra of gamma-ray sources ($\gamma\gamma \rightarrow e^-e^+$). We recently developed a dedicated technique to reconstruct the EBL, and its evolution ... More
The First GeV Outburst of the Radio-loud Narrow Line Seyfert 1 galaxy PKS 1502+036Mar 04 2016The $\gamma$-ray loud narrow line Seyfert 1 ($\gamma$-NLSy1) galaxy PKS 1502+036 ($z=0.409$) exhibited its first $\gamma$-ray outburst on 2015 December 20. In the energy range of 0.1-300 GeV, the highest flux measured by {\it Fermi}-Large Area Telescope ... More
Fermi Monitoring of Radio-loud Narrow Line Seyfert 1 GalaxiesOct 03 2014We present detailed analysis of the gamma-ray flux variability and spectral properties of the five radio-loud narrow line Seyfert 1 (RL-NLSy1) galaxies, detected by the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope, namely 1H 0323+342, ... More
Intra-Night Optical Variability Monitoring of Fermi Blazars: First Results from 1.3 m J C Bhattacharya TelescopeDec 27 2018We report the first results obtained from our campaign to characterize the intranight-optical variability (INOV) properties of {\it Fermi}~detected blazars, using the observations from the recently commissioned 1.3 m J C Bhattacharya telescope (JCBT). ... More
Supermassive black holes at high redshiftsMar 14 2019MeV blazars are the most luminous persistent sources in the Universe and emit most of their energy in the MeV band. These objects display very large jet powers and accretion luminosities and are known to host black holes with a mass often exceeding $10^9 ... More
Multi-wavelength observations of 3C 279 during the extremely bright gamma-ray flare in 2014 March-AprilJan 29 2015The well studied blazar 3C 279 underwent a giant $\gamma$-ray outburst in 2014 March-April. The measured $\gamma$-ray flux (1.21 $\pm$ 0.10 $\times$ 10$^{-5}$ ph cm$^{-2}$ s$^{-1}$ in 0.1-300 GeV energy range) is the highest detected from 3C 279 by Fermi ... More
The Nature of gamma-ray Loud Narrow Line Seyfert I Galaxies PKS 1502+036 and PKS 2004-447Mar 14 2013Variable gamma-ray emission has been discovered in five Radio-loud Narrow Line Seyfert 1 (NLSy1) galaxies by the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope. This has clearly demonstrated that these NLSy1 galaxies do have relativistic ... More
Broadband Observations of the Gamma-ray Emitting Narrow Line Seyfert 1 Galaxy SBS 0846+513Mar 04 2016We present the results of our broadband study of the $\gamma$-ray emitting narrow line Seyfert 1 (NLSy1) galaxy SBS 0846+513 ($z=0.585$). This includes multi-band flux variations, $\gamma$-ray spectral analysis, broad band spectral energy distribution ... More
Gamma-ray Emitting Narrow Line Seyfert 1 Galaxies in The Sloan Digital Sky SurveyJan 05 2018The detection of significant $\gamma$-ray emission from radio-loud narrow line Seyfert 1 (NLSy1s) galaxies enables us to study jets in environments different than those in blazars. However, due to the small number of known $\gamma$-ray emitting NLSy1 ... More
Violent Hard X-ray Variability of Mrk 421 Observed by NuSTAR in 2013 AprilAug 26 2015The well studied blazar Markarian 421 (Mrk 421, $z$=0.031) was the subject of an intensive multi-wavelength campaign when it flared in 2013 April. The recorded X-ray and very high energy (VHE, E$>$100 GeV) $\gamma$-ray fluxes are the highest ever measured ... More
Lepto$-$Hadronic Origin of $γ$-ray Outbursts of 3C 279Mar 04 2016The blazar 3C 279 exhibited a giant $\gamma$-ray outburst in 2013 December and 2014 April. Apart from the very fast $\gamma$-ray flux variability, the spectral nature of the flares were also found to vary significantly between these two flaring events. ... More
A hard gamma-ray flare from 3C 279 in 2013 DecemberDec 01 2015The blazar 3C 279 exhibited twin $\gamma$-ray flares of similar intensity in 2013 December and 2014 April. In this work, we present a detailed multi-wavelength analysis of the 2013 December flaring event. Multi-frequency observations reveal the uncorrelated ... More
Broadband Observations of High Redshift BlazarsApr 28 2016We present a multi-wavelength study of four high redshift blazars, S5 0014+81 ($z=3.37$), CGRaBS J0225+1846 ($z=2.69$), BZQ J1430+4205 ($z=4.72$), and 3FGL J1656.2$-$3303 ($z=2.40$), using the quasi-simultaneous data from {\it Swift}, {\it NuSTAR}, and ... More
General Physical Properties of CGRaBS BlazarsNov 03 2017Nov 07 2017We present the results of a multi-frequency, time-averaged analysis of blazars included in the Candidate Gamma-ray Blazar Survey catalog. Our sample consists of 324 $\gamma$-ray detected ($\gamma$-ray loud) and 191 non $\gamma$-ray detected ($\gamma$-ray ... More
Intranight optical variability of γ-ray loud Narrow Line Seyfert 1 galaxiesOct 16 2012The Large Area Telescope (LAT) onboard the {\it Fermi} Gamma Ray Space Telescope has detected \gamma-ray emission from some Narrow Line Seyfert 1(NLSy1) galaxies. This indicates the presence of relativistic jets in these sources similar to blazars and ... More
New high-z BL Lacs using the photometric method with Swift and SARASep 11 2017Apr 11 2018BL Lacertae (BL Lac) objects are the prominent members of the third {\it Fermi} Large Area Telescope catalog of $\gamma$-ray sources. Half of the BL Lac population ($\sim$ 300) lack redshift measurements, which is due to the absence of lines in their ... More
The Peculiar Radio-Loud Narrow Line Seyfert 1 Galaxy 1H 0323+342May 04 2014We present a multi-wavelength study of the radio-loud narrow line Seyfert 1 galaxy (NLSy1), 1H 0323+342, detected by Fermi Gamma Ray Space Telescope. Multi-band light curves show many orphan X-ray and optical flares having no corresponding {\gamma}-ray ... More
Leptonic and Hadronic Modeling of Fermi-LAT Hard Spectrum Quasars and Predictions for High-Energy PolarizationJul 05 2018We present the results of a study of the time-averaged spectral energy distributions (SEDs) of eight flat spectrum radio quasars (FSRQs) present in the second catalog of high energy sources detected beyond 50 GeV by the {\it Fermi}-Large Area Telescope ... More
General Physical Properties of Gamma-ray Emitting Narrow-Line Seyfert 1 GalaxiesJan 22 2019We present the results of a detailed multi-wavelength study of a sample of sixteen narrow-line Seyfert 1 (NLSy1) galaxies known in $\gamma$-rays so far. This includes a focused X-ray spectral analysis, to compare them with a more general NLSy1 population, ... More
Awakening of The High Redshift Blazar CGRaBS J0809+5341Feb 19 2015CGRaBS J0809+5341, a high redshift blazar at z = 2.144, underwent a giant optical outburst on 2014 April 19 when it brightened by $\sim$5 mag and reached an unfiltered apparent magnitude of 15.7 mag. This implies an absolute magnitude of -30.5 mag, making ... More
Fuzzy Aided Application Layer Semantic Intrusion Detection System - FASIDSMay 25 2010The objective of this is to develop a Fuzzy aided Application layer Semantic Intrusion Detection System (FASIDS) which works in the application layer of the network stack. FASIDS consist of semantic IDS and Fuzzy based IDS. Rule based IDS looks for the ... More
Detection of a gamma-ray flare from the high-redshift blazar DA 193Dec 18 2018High-redshift ($z>2$) blazars are the most powerful members of the blazar family. Yet, only a handful of them have both X-ray and $\gamma$-ray detection, thereby making it difficult to characterize the energetics of the most luminous jets. Here, we report, ... More
A GeV-TeV Measurement of the Extragalactic Background LightMar 07 2019The Extragalactic Background Light (EBL) can be probed via the absorption imprint it leaves in the spectra of gamma-ray sources ($\gamma\gamma \rightarrow e^-e^+$). We recently developed a dedicated technique to reconstruct the EBL, and its evolution ... More
Relaxation Control of Packet Arrival Rate in the Neighborhood of the Destination in Concentric Sensor NetworksJan 21 2010One of the challenges in the wireless sensor applications which are gaining much attention is the real-time transmission of continuous data packets across the network. Though advances in communication in sensor networks are providing guaranteed quality ... More
Factors Influencing Job Rejections in Cloud EnvironmentSep 28 2012The IT organizations invests heavy capital by consuming large scale infrastructure and advanced operating platforms. The advances in technology has resulted in emergence of cloud computing, which is promising technology to achieve the aforementioned objective. ... More
Enhanced Load Balancing Approach to Avoid Deadlocks in CloudSep 28 2012The state-of-art of the technology focuses on data processing to deal with massive amount of data. Cloud computing is an emerging technology, which enables one to accomplish the aforementioned objective, leading towards improved business performance. ... More
Probing the EBL evolution at high redshift using GRBs detected with the Fermi-LATOct 06 2017The extragalactic background light (EBL), from ultraviolet to infrared wavelengths, is predominantly due to emission from stars, accreting black holes and reprocessed light due to Galactic dust. The EBL can be studied through the imprint it leaves, via ... More
Severity Prediction of Drought in A Large Geographical Area Using Distributed Wireless Sensor NetworksJan 21 2010In this paper, the severity prediction of drought through the implementation of modern sensor networks is discussed. We describe how to design a drought prediction system using wireless sensor networks. This paper will describe a terrestrial interconnected ... More
New High-z Fermi BL Lacs with the Photometric Dropout TechniqueNov 11 2016Determining redshifts for BL Lacertae (BL Lac) objects using the traditional spectroscopic method is challenging due to the absence of strong emission lines in their optical spectra. We employ the photometric dropout technique to determine redshifts for ... More
High-redshift blazars through nustar eyesMar 30 2017The most powerful sources among the blazar family are MeV blazars. Often detected at $z>2$, they usually display high X- and \gm-ray luminosities, larger-than-average jet powers and black hole masses $\gtrsim 10^9 M_{\odot}$. In the present work we perform ... More
A Multicore Processor based Real-Time System for Automobile management applicationJan 21 2010In this paper we propose an Intelligent Management System which is capable of managing the automobile functions using the rigorous real-time principles and a multicore processor in order to realize higher efficiency and safety for the vehicle. It depicts ... More
Multicore Applications in Real Time SystemsJan 20 2010Microprocessor roadmaps clearly show a trend towards multiple core CPUs. Modern operating systems already make use of these CPU architectures by distributing tasks between processing cores thereby increasing system performance. This review article highlights ... More
Columbia MVSO Image Sentiment DatasetNov 14 2016The Multilingual Visual Sentiment Ontology (MVSO) consists of 15,600 concepts in 12 different languages that are strongly related to emotions and sentiments expressed in images. These concepts are defined in the form of Adjective-Noun Pair (ANP), which ... More
Cloud Computing For MicrofinancesApr 12 2012Evolution of Science and Engineering has led to the growth of several commercial applications. The wide spread implementation of commercial based applications has in turn directed the emergence of advanced technologies such as cloud computing. India has ... More
Detection of Possible Quasi-periodic Oscillations in the Long-term Optical Light Curve of the BL Lac Object OJ 287Sep 08 2016Detection of periodicity in the broad-band non-thermal emission of blazars has so far been proven to be elusive. However, there are a number of scenarios which could lead to quasi-periodic variations in blazar light curves. For example, orbital or thermal/viscous ... More
A Novel Agent Based Approach for Controlling Network StormsJul 11 2011One of the fundamental data transmission mechanisms in Ethernet LAN is broadcasting. Flooding is a direct broadcasting technique used in these networks. A significant drawback of this method is that it can lead to broadcast storms. This phenomenon is ... More
Improved Strategies for Enhanced Business Performance in Cloud based IT IndustriesJan 12 2012Jul 15 2012Emergence of sophisticated technologies in IT industries has posed several challenges such as production of products using advanced technical process for instance Result Orientation Approach, Deployment, Assessment and Refinement (RADAR) in a dynamic ... More
NuSTAR, Swift, and GROND observations of the flaring MeV blazar: PMN J0641$-$0320Feb 20 2016MeV blazars are a sub--population of the blazar family, exhibiting larger--than--average jet powers, accretion luminosities and black hole masses. Because of their extremely hard X--ray continua, these objects are best studied in the X-ray domain. Here, ... More
MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sourcesJan 13 2019The HAWC Collaboration released the 2HWC catalog of TeV sources, in which 19 show no association with any known high-energy (HE; E > 10 GeV) or very-high-energy (VHE; E > 300 GeV) sources. This catalog motivated follow-up studies by both the MAGIC and ... More
Band insulator to Mott insulator transition in a bilayer Hubbard modelMar 27 2007The ground state phase diagram of the half-filled repulsive Hubbard model in a bilayer is investigated using cluster dynamical mean field theory. For weak to intermediate values of Coulomb repulsion $U$, the system undergoes a transition from a Mott insulating ... More
The flavor universality of some mass splittings in hadronsOct 08 2014The approximate chiral invariance of the two-flavor QCD is known to be spontaneously broken. This effect explains the relatively small pion mass and, as is widely believed, the mass splittings of would-be chiral partners --- the hadrons of equal spin ... More
Implications of the Crystal Barrel data for meson-baryon symmetriesJul 09 2007Sep 10 2008Making use of numerous resonances discovered by the Crystal Barrel Collaboration we discuss some possible relations between the baryon and meson spectra of resonances composed of the light non-strange quarks. Our goal is to indicate new features that ... More
Parity doubling in particle physicsApr 12 2007Sep 07 2007Parity doubling in excited hadrons is reviewed. Parity degeneracy in hadrons was first experimentally observed 40 years ago. Recently new experimental data on light mesons caused much excitement and renewed interest to the phenomenon, which still remains ... More
Experimental indication on chiral symmetry restoration in meson spectrumMar 21 2006Jun 27 2006The spectroscopic predictions of the Ademollo-Veneziano-Weinberg dual model are critically tested in view of the modern experimental data. The predicted equidistance of masses squared for chiral partners is shown to be violated high in energies, instead ... More
Regge spectrum from holographic models inspired by OPEFeb 23 2009Jun 29 2009The problem of obtaining the Regge-like behaviour for meson mass spectrum in the hard-wall AdS/QCD models is addressed. We show that the problem can be solved by a simple incorporation of the effects of local vacuum condensates into such models. The slope ... More
Towards understanding broad degeneracy in non-strange mesonsJan 11 2007Jul 06 2007The spectroscopic regularities of modern empirical data on the non-strange mesons up to 2.4 GeV can be summarized as a systematic clustering of states near certain values of energy. It is getting evident that some unknown X-symmetry triggers the phenomenon. ... More
A Simple Method to Mix Granular MaterialsOct 06 1999We show that a mixture of two species of granular particles with equal sizes but differing densities can be either segregated or mixed by adjusting the granular temperature gradient and the magnitude of the gravitational force. In the absence of gravity, ... More
Apology of EuclidJul 11 2005This is a short apology of the style of the Elements by Euclid and Bourbaki.
An information theoretical analysis of quantum optimal controlJan 20 2014We show that if an efficient classical representation of the dynamics exists, optimal control problems on many-body quantum systems can be solved efficiently with finite precision. We show that the size of the space of parameters necessary to solve quantum ... More
Interplay of gas and ice during cloud evolutionAug 21 2014Jan 20 2015During the evolution of diffuse clouds to molecular clouds, gas-phase molecules freeze out on surfaces of small dust particles to form ices. On dust surfaces, water is the main constituent of the icy mantle in which a complex chemistry is taking place. ... More
Competing Glauber and Kawasaki DynamicsAug 17 1998Using a quantum formulation of the master equation we study a kinetic Ising model with competing stochastic processes: the Glauber dynamics with probability $p$ and the Kawasaki dynamics with probability $1 - p$. Introducing explicitely the coupling to ... More
Limit shocks of relativistic magnetohydrodynamics, Punsly's waveguide and the Blandford-Znajek solutionJun 05 2002Sep 11 2002In this paper we examine various issues closely related to the ongoing discussion on the nature of the Blandford-Znajek mechanism of extraction of rotational energy of black holes. In particular, we show that switch-on and switch-off shocks are allowed ... More
Simulations of Axisymmetric Magnetospheres of Neutron StarsOct 11 2005Nov 28 2005In this paper we present the results of time-dependent simulations of dipolar axisymmetric magnetospheres of neutron stars carried out both within the framework of relativistic magnetohydrodynamics and within the framework of resistive force-free electrodynamics. ... More
On the nature of the Blandford-Znajek mechanismNov 07 2002It is widely accepted in the astrophysical community that the event horizon plays crucial role in the Blandford-Znajek mechanism of extraction of rotational energy of black holes. In fact, this view is a quintessence of the Membrane Paradigm of black ... More
Studying the Feasibility and Importance of Software Testing: An AnalysisJan 23 2010Software testing is a critical element of software quality assurance and represents the ultimate review of specification, design and coding. Software testing is the process of testing the functionality and correctness of software by running it. Software ... More
Nonperturbative calculations in light-front QEDOct 01 2010The methods of light-front quantization and Pauli-Villars regularization are applied to a nonperturbative calculation of the dressed-electron state in quantum electrodynamics. This is intended as a test of the methods in a gauge theory, as a precursor ... More
Optimization of fuzzy analogy in software cost estimation using linguistic variablesSep 12 2012One of the most important objectives of software engineering community has been the increase of useful models that beneficially explain the development of life cycle and precisely calculate the effort of software cost estimation. In analogy concept, there ... More
Planetary nebula or symbiotic Mira? Near infrared colours mark the differenceAug 21 2001Nebulae around symbiotic Miras look very much like genuine planetary nebulae, although they are formed in a slightly different way. We present near infrared photometry of known and suspected symbiotic nebulae obtained with the Deep Near Infrared Southern ... More
A catalogue of IJK photometry of Planetary Nebulae with DENISMay 15 2001Near-infrared photometry of planetary nebulae (PNe) allows the classification of those objects. We present the largest homogeneous sample so far, obtained with the Deep Near Infrared Southern Sky Survey (DENIS).
Spin Injection and Nonlocal Spin Transport in Magnetic NanostructuresSep 20 2006We theoretically study the nonlocal spin transport in a device consisting of a nonmagnetic metal (N) and ferromagnetic injector (F1) and detector (F2) electrodes connected to N. We solve the spin-dependent transport equations in a device with arbitrary ... More
About the fastest growth of Order Parameter in Models of PercolationJun 14 2011Can there be a `Litmus test' for determining the nature of transition in models of percolation? In this paper we argue that the answer is in the affirmative. All one needs to do is to measure the `growth exponent' $\chi$ of the largest component at the ... More
Branching Process in a Stochastic Extremal ModelApr 27 2009Sep 16 2009We considered a stochastic version of the Bak-Sneppen model (SBSM) of ecological evolution where the the number $M$ of sites mutated in a mutation event is restricted to only two. Here the mutation zone consists of only one site and this site is randomly ... More
Self-Organization in a Granular Medium by Internal AvalanchesSep 12 2000Internal avalanches of grain displacements can be created inside a granular material kept in a bin in two ways: (i) By removing a radomly selected grain at the bottom of the bin (ii) By breaking a stable arch of grains clogging a hole at the bottom of ... More
The explanation of unexpected temperature dependence of the muon catalysis in solid deuteriumApr 30 2001It is shown that due to the smallness of the inelastic cross-section of the $d\mu$-atoms scattering in the crystal lattice at sufficiently low temperatures the $dd\mu$-mesomolecules formation from the upper state of the hyperfine structure $d\mu (F=3/2)$ ... More
Resolving Extragalactic Star Clusters with HST/ACSJul 02 2007With HST, colour-magnitude diagrams (CMDs) can be obtained for young star clusters well beyond the Local Group. Such data can help constrain cluster ages and metallicities, and also provide a reference against which intermediate- and high mass stellar ... More
Towards spin turbulence of light: Spontaneous disorder and chaos in cavity-polariton systemsNov 23 2015Nov 02 2016Recent advances in nanophotonics have brought about coherent light sources with chaotic circular polarization; a low-dimensional chaotic evolution of optical spin was evidenced in laser diodes. Here we propose a mechanism that gives rise to light with ... More
Dynamical mechanisms of DC current generation in driven Hamiltonian systemsApr 03 2001Recent symmetry considerations (Phys. Rev. Lett. {\bf 84} 2358 (2000)) have shown that dc currents may be generated in the stochastic layer of a system describing the motion of a particle in a one-dimensional potential in the presence of an ac time-periodic ... More
Spectral curves and parameterizations of a discrete integrable 3-dimensional modelSep 09 2002We consider a discrete classical integrable model on the 3-dimensional cubic lattice. The solutions of this model can be used to parameterize the Boltzmann weights of the different 3-dimensional spin models. We have found the general solution of this ... More
Relativistic Toda chain at root of unity II. Modified Q-operatorJul 27 2001Matrix elements of quantum intertwiner as well as the modified Q-operator for the quantum relativistic Toda chain at root of unity are constructed explicitly. Modified Q-operators make isospectrality transformations of quantum transfer matrices so that ... More
Supersymmetric Magnetic Moments Sum Rules and Spontaneous Supersymmetry BreakingNov 22 1994In supersymmetry the anomalous magnetic moment of particles belonging to the same supermultiplet is related by simple sum rules. We study the modification of these sum rules in the case of spontaneously broken N=1 global supersymmetry.
Can we have another light (~ 145 GeV) Higgs boson?Oct 20 2015A second light Higgs boson, with mass of approximately 145 GeV, is predicted by non-minimal Supersymmetric models. This new particle can account for an apparent \sim 3 \sigma excess recorded by the CMS experiment at the Large Hadron Collider (LHC) during ... More
On Special Cases of General Geometry: geometries with changing length of vectorsJun 01 2006We find relations between quantities defining geometry and quantities defining the length of a curve in geometries underlying Electromagnetism and unified model of Electromagnetism and Gravitation. We show that the length of a vector changes along a curve ... More
Multi-black holes and instantons in effective string theoryJul 16 1996The effective action for string theory which takes into account non-minimal coupling of moduli admits multi-black hole solutions. The euclidean continuation of these solutions can be interpreted as an instanton mediating the splitting and recombination ... More
Large-Scale Magnetic Field Re-generation by Resonant MHD Wave InteractionsOct 24 2007We investigate numerically the long-time behavior of balanced Alfven wave turbulence forced at intermediate scales. Whereas the usual constant-flux solution is found at the smallest scales, two new scalings are obtained at the forcing scales and at the ... More
Cluster Growth in two- and three-dimensional Granular GasesApr 28 2003Dec 11 2003Dissipation in granular media leads to interesting phenomena as there are cluster formation and crystallization in non-equilibrium dynamical states. The freely cooling system is examined concerning the energy decay and the cluster evolution in time, both ... More
Dynamical mean field theory of small polaron transportJun 24 2003We present a unified view of the transport properties of small-polarons in the Holstein model at low carrier densities, based on the Dynamical Mean Field Theory. The nonperturbative nature of the approach allows us to study the crossover from classical ... More
Dynamical Systems and Topological SurgeryDec 12 2008In this paper we try to establish a connection between a three-dimensional Lotka--Volterra dynamical system and two-dimensional topological surgery. There are many physical phenomena exhibiting two-dimensional topological surgery through a `hole drilling' ... More
Reptation Quantum Monte CarloAug 19 1998We present an elementary and self-contained account of the analogies existing between classical diffusion and the imaginary-time evolution of quantum systems. These analogies are used to develop a new quantum simulation method which allows to calculate ... More
Comparing the Ag-content of poltinniks using X-ray fluorescenceFeb 12 2013X-ray fluorescence experiments have been performed in order to analyze the elemental composition of four Russian 50-kopek coins ("poltinniks") minted during 1913, 1921, and 1924. By comparing the intensities of the Ag K{\alpha} X-rays emitted by the poltinniks, ... More
A special chain theorem for the embedding dimensionOct 01 2014This paper establishes an analogue of the special chain theorem for the embedding dimension of polynomial rings, with direct application on the (embedding) codimension. In particular, we recover a classic result on the transfer of regularity to polynomial ... More
The Cauchy problem for f(R)-gravity: an overviewMar 11 2011We review the Cauchy problem for f(R) theories of gravity, in metric and metric-affine for- mulations, pointing out analogies and differences with respect to General Relativity. The role of conformal transformations, effective scalar fields and sources ... More
Distinguishing WH and WBBbar production at the Fermilab TevatronMar 02 1999The production of a Higgs boson in association with a W-boson is the most likely process for the discovery of a light Higgs at the Fermilab Tevatron. Since it decays primarily to b-quark pairs, the principal background for this associated Higgs production ... More
Higher order QCD corrections to charged-lepton deep-inelastic scattering and global fits of parton distributionsNov 10 2008Jan 18 2009We study the perturbative QCD corrections to heavy-quark structure functions of charged-lepton deep-inelastic scattering and their impact on global fits of parton distributions. We include the logarithmically enhanced terms near threshold due to soft ... More
A New Metallicity Calibration for Dwarfs for the RGU-PhotometryMar 20 2003We adopted the procedure of Carney to obtain a metallicity calibration for dwarfs for the RGU-photometry. For this purpose we selected 76 dwarfs of different metallicities from Carney, and Strobel et al., and evaluated their \delta(U-G) ultra-violet excess ... More
Mathematics and Economics of Leonid KantorovichJan 02 2011This is a short overview of the contribution of Leonid Kantorovich into the formation of the modern outlook on the interaction between mathematics and economics.
Numerical solution of moving plate problem with uncertain parametersMar 14 2015This paper deals with uncertain parabolic fluid flow problem where the uncertainty occurs due to the initial conditions and parameters involved in the system. Uncertain values are considered as fuzzy and these are handled through a recently developed ... More
Direct photon radiation from a rich baryon Quark-Gluon Plasma systemOct 07 2006Feb 21 2007The direct photon radiation from a hot and slightly strong interacting fireball system of a rich baryon quark-gluon plasma, using the Boltzmann distribution function for the incoming particles and Bose-Einstein distribution for gluon and Fermi-Dirac distribution ... More
On the Ascoli property for locally convex spaces and topological groupsNov 09 2016Feb 25 2017We characterize Ascoli spaces by showing that a Tychonoff space $X$ is Ascoli iff the canonical map from the free locally convex space $L(X)$ over $X$ into $C_k\big(C_k(X)\big)$ is an embedding of locally convex spaces. We prove that an uncountable direct ... More
Canonical band theory of non-collinear magnetismFeb 08 2007A canonical band theory of non-collinear magnetism is developed and applied to the close packed fcc and bcc crystal structures. Several examples of non-collinear magnetism in the periodic table are seen to be canonical in origin. This is a parameter free ... More
A computation of an universal weight function for the quantum affine algebra U_q(\hat{\mathfrak{gl}}_N)Nov 18 2007Nov 20 2007We compute an universal weight function (off-shell Bethe vectors) in any representation with a weight singular vector of the quantum affine algebra $U_q(\hat{\mathfrak{gl}}_N)$ applying the method of projections of Drinfeld currents developed in arXiv:math/0610398. ... More
Sub-Poissonian Shot Noise in Molecular WiresSep 05 2002We investigate the transport behavior of polyene molecules sandwiched between two metallic contacts using the non-equilibrium Green's function formalism. We calculate both current and noise power as a function of applied voltage and show that they decrease ... More
Minimally almost periodic group topology on infinite countable Abelian groups: A solution to Comfort's questionFeb 07 2010Oct 07 2011For any countable subgroup $H$ of an unbounded Abelian group $G$ there is a complete Hausdorff group topology $\tau$ such that $H$ is the von Neumann radical of $(G,\tau)$. In particular, we obtain the positive answer to Comfort's question: any unbounded ... More
Simultaneous Linear Inequalities: Yesterday and TodayJul 13 2010Jul 14 2010This is a short overview of some recent tendencies in the theory of linear inequalities that are evoked by Boolean valued analysis.
Submodular spectral functions of principal submatrices of a hermitian matrix, extensions and applicationsJul 20 2010Jun 19 2012We extend the multiplicative submodularity of the principal determinants of a nonnegative definite hermitian matrix to other spectral functions. We show that if $f$ is the primitive of a function that is operator monotone on an interval containing the ... More
Symmetry analysis and exact solutions of one class of (1+3)-dimensional boundary-value problems of the Stefan typeJul 31 2014We present the group classification of one class of (1+3)-dimensional nonlinear boundary-value problems of the Stefan type that simulate the processes of melting and evaporation of metals. The results obtained are used for the construction of the exact ... More
Nonstandard Tools for Nonsmooth AnalysisJun 11 2012This is an overview of the basic tools of nonsmooth analysis which are grounded on nonstandard models of set theory. By way of illustration we give a criterion for an infinitesimally optimal path of a general discrete dynamic system.
Ghost-Stochastic Resonance in a Unidirectionally Coupled and Small-World NetworksOct 27 2015Ghost-stochastic resonance is a noise-induced resonance at a missing fundamental frequency in the input signal. In this paper we investigate the features of ghost-stochastic resonance in a unidirectionally coupled network and small-world network with ... More