Results for "Swinda K. J. Falkena"

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Derivation of Delay Equation Climate Models Using the Mori-Zwanzig FormalismFeb 08 2019Models incorporating delay have been frequently used to understand climate variability phenomena, but often the delay is introduced through an ad-hoc physical reasoning, such as the propagation time of waves. In this paper, the Mori-Zwanzig formalism ... More
Derivation of Delay Equation Climate Models Using the Mori-Zwanzig FormalismFeb 08 2019May 17 2019Models incorporating delay have been frequently used to understand climate variability phenomena, but often the delay is introduced through an ad-hoc physical reasoning, such as the propagation time of waves. In this paper, the Mori-Zwanzig formalism ... More
Two-Roton Bound State in the Fractional Quantum Hall EffectApr 27 2000The true nature of the lowest-energy, long-wavelength neutral excitation of the fractional quantum Hall effect has been a long outstanding problem. In this Letter, we establish that it is a two-roton bound state.
Spontaneous Magnetization of Composite FermionsOct 19 1999It is argued that the composite fermion liquid is a promising candidate for an observation of the elusive, interaction driven magnetization first proposed by Bloch seven decades ago. In analogy to what is theoretically believed to be the case for the ... More
Baryon-to-entropy ratio in very high energy nuclear collisionsOct 10 1996We compute as a function of rapidity $y$ the baryon number carried by quarks and antiquarks with $p_T > p_0 \approx$ 2 GeV produced in Pb+Pb collisions at TeV energies. The computation is carried out in lowest order QCD perturbation theory using structure ... More
Heavy ion collision multiplicities and gluon distribution functionsJun 28 2001Atomic number ($A$) and energy ($\roots$) scaling exponents of multiplicity and transverse energy in heavy ion collisions are analytically derived in the perturbative QCD + saturation model. The exponents depend on the small-$x$ behaviour of gluon distribution ... More
Density wave patterns for fermionic dipolar molecules on a square optical lattice: Mean-field-theory analysisFeb 03 2011We model a system of ultracold fermionic dipolar molecules on a two-dimensional square lattice. Assuming that the molecules are in their nondegenerate hyperfine ground state, and that the dipole moment is polarized perpendicular to the plane (as in the ... More
Transverse energy from minijets in ultrarelativistic nuclear collisions: a next-to-leading order analysisOct 27 2000We compute in next-to-leading order (NLO) perturbative QCD the amount of transverse energy produced into a rapidity region $\Delta Y$ of a nuclear collision from partons created in the few-GeV subcollisions. The NLO formulation assumes collinear factorization ... More
TBA for the Toda chainJun 15 2010We give a direct derivation of a proposal of Nekrasov-Shatashvili concerning the quantization conditions of the Toda chain. The quantization conditions are formulated in terms of solutions to a nonlinear integral equation similar to the ones coming from ... More
Centrality dependence of multiplicities in ultrarelativistic nuclear collisionsSep 21 2000We compute the centrality dependence of multiplicities of particles produced in ultrarelativistic nuclear collisions at various energies and atomic numbers. The computation is carried out in perturbative QCD with saturated densities of produced gluons ... More
The V-EUV Delay for Dwarf Nova Outbursts: A Case Study for VW Hydri, U Geminorum, and SS CygniMay 14 2001We present a parameter study using time dependent calculations of the thermal limit cycle model for dwarf nova outbursts. Our goal is to delineate the dependence of the delay between the initial rapid rise of the visual and EUV fluxes during the start ... More
Coherent states for the quantum mechanics on a torusDec 11 2007The coherent states for the quantum mechanics on a torus and their basic properties are discussed.
On the geometry of conformal mechanicsAug 05 2011Aug 17 2011A geometric picture of conformally invariant mechanics is presented. Although the standard form of the model is recovered, the careful analysis of global geometry of phase space leads to the conclusion that, in the attractive case, the singularity related ... More
E-B Mixing in T-violating SuperconductorsMay 12 1998Oct 07 1998We analyze time reversal violating processes of the p-wave superconductor. The Landau-Ginzuburg effective action has an induced T-violating term of electromagnetic potentials which resembles the Chern-Simons term and causes a mixing between the electric ... More
Collectivity-assisted ground state cooling of a nanomechanical resonatorDec 10 2009We discuss cooling of a nanomechanical resonator to its mechanical ground state by coupling it to a collective system of two interacting flux qubits. We find that the collectivity crucially improves cooling by two mechanisms. First, cooling transitions ... More
Meron-cluster algorithms and chiral symmetry breaking in a (2+1)-d staggered fermion modelMar 27 2000The recently developed Meron-Cluster algorithm completely solves the exponentially difficult sign problem for a number of models previously inaccessible to numerical simulation. We use this algorithm in a high-precision study of a model of N=1 flavor ... More
Bosons in Disc-Shaped Traps: From 3D to 2DOct 01 2005Oct 16 2006We present a mathematically rigorous analysis of the ground state of a dilute, interacting Bose gas in a three-dimensional trap that is strongly confining in one direction so that the system becomes effectively two-dimensional. The parameters involved ... More
Renormalization group in the internal spaceOct 28 2004Renormalization group in the internal space consists of the gradual change of the coupling constants. Functional evolution equations corresponding to the change of the mass or the coupling constant are presented in the framework of a scalar model. The ... More
Approximate Spin and Pseudospin Solutions of the Dirac equation with Rosen-Morse Potential including a Coulomb Tensor InteractionApr 26 2012By applying the Pekeris-type approximation to deal with the (pseudo or) centrifugal term, the spin and pseudospin symmetry solutions of the Dirac equation for the Rosen-Morse potential including a Coulomb-like tensor potential with arbitrary spin-orbit ... More
Percolation in quantum computation and communicationDec 11 2007This article is a draft of a book chapter of the book entitled "Quantum Percolation and Breakdown", to appear 2008.
Monte Carlo simulation of light scattering in the atmosphere and effect of atmospheric aerosols on the point spread functionOct 07 2013We present a Monte Carlo simulation for the scattering of light in the case of an isotropic light source. The scattering phase functions are studied particularly in detail to understand how they can affect the multiple light scattering in the atmosphere. ... More
Symmetries, Topological Phases and Bound States in the One-Dimensional Quantum WalkAug 10 2012Nov 09 2012Discrete-time quantum walks have been shown to simulate all known topological phases in one and two dimensions. Being periodically driven quantum systems, their topological description, however, is more complex than that of closed Hamiltonian systems. ... More
Starburst Galaxies in ClustersMar 08 1999The nature of the starburst phenomenon in galaxies is investigated using a narrow band color system designed to study color evolution in distant clusters. Work on zero redshift, luminous far-IR galaxies, calibrated by starburst models, demonstrates the ... More
Pre-thermalization dynamics: initial conditions for QGP at the LHC and RHIC from perturbative QCDAug 27 1997I discuss how the initial conditions for QGP-production in ultrarelativistic heavy ion collisions at the LHC and RHIC can be computed from perturbative QCD.
Minijets in ultrarelativistic heavy ion collisions at future collidersMay 15 1997The role of minijet production as initial conditions for QGP production at $\tau\sim 0.1 fm/c$ in nuclear collisions at the LHC and RHIC energies is discussed.
Initial state of the QGP from perturbative QCD + saturationNov 19 2001The production of the initial state of the QGP in very high-energy $AA$ collisions is discussed within the framework of perturbative QCD and saturation. The next-to-leading order computation of the transverse energy of minijets is reviewed. Saturation ... More
Impurity problems for steady-state nonequilibrium dynamical mean-field theoryFeb 24 2009The mapping of steady-state nonequilibrium dynamical mean-field theory from the lattice to the impurity is described in detail. Our focus is on the case with current flow under a constant dc electric field of arbitrary magnitude. In addition to formulating ... More
Quenching Bloch oscillations in a strongly correlated materialNov 07 2007Dynamical mean-field theory is generalized to solve the nonequilibrium Keldysh boundary problem: a system is started in equilibrium at a temperature T=0.1, a uniform electric field is turned on at t=0, and the system is monitored as it approaches the ... More
Dynamical mean field theory for strongly correlated inhomogeneous multilayered nanostructuresAug 10 2004Dynamical mean field theory is employed to calculate the properties of multilayered inhomogeneous devices composed of semi-infinite metallic lead layers coupled via barrier planes that are made from a strongly correlated material (and can be tuned through ... More
Nuclear Mean Fields through Selfconsistent Semiclassical CalculationsMar 15 2002Semiclassical expansions derived in the framework of the Extended Thomas-Fermi approach for the kinetic energy density tau(r) and the spin-orbit density J(r) as functions of the local density rho(r) are used to determine the central nuclear potentials ... More
Thermodynamics of a field theory with infrared fixed point from gauge/gravity dualityDec 21 2009Jan 18 2010We use gauge/gravity duality to study the thermodynamics of a field theory with asymptotic freedom in the ultraviolet and a fixed point in the infrared. We find a high temperature quark-gluon phase and a low T conformal unparticle phase. The phase transition ... More
Primitive tensors and convergence of an iterative process for the eigenvalues of a primitive tensorApr 14 2010Nov 18 2010An algorithm for finding the eigenvalue of a nonnegative irreducible tensor was recently proposed by Michael Ng, Liqun Qi, and Guanglu Zhou in {\it Finding the largest eigenvalue of a nonnegative tensor}. However, the authors did not prove the proposed ... More
Superhumps: Confronting Theory with ObservationMay 31 2006We review the theory and observations related to the ``superhump'' precession of eccentric accretion discs in close binary sytems. We agree with earlier work, although for different reasons, that the discrepancy between observation and dynamical theory ... More
Augmented kludge waveforms and Gaussian process regression for EMRI data analysisFeb 01 2016Extreme-mass-ratio inspirals (EMRIs) will be an important type of astrophysical source for future space-based gravitational-wave detectors. There is a trade-off between accuracy and computational speed for the EMRI waveform templates required in the analysis ... More
Core - Corona Model describes the Centrality Dependence of v_2/epsilonAug 31 2010Event by event EPOS calculations in which the expansion of the system is described by {\it ideal} hydrodynamics reproduce well the measured centrality dependence of $v_2/\epsilon_{part}$, although it has been claimed that only viscous hydrodynamics can ... More
Is the centrality dependence of the elliptic flow $v_2$ and of the average $<p_T>$ in RHIC experiments more than a Core-Corona Effect?Jan 10 2010Jul 11 2010Recently we have shown that the centrality dependence of the multiplicity of different hadron species observed in RHIC and SPS experiments can be well understood in a simple model, dubbed core-corona model. There it is assumed that those incoming nucleons ... More
Mass determination of the lightest supersymmetric partner (C-boson and C-fermion) and cold dark matterDec 21 2000Dec 30 2000%auto-ignore This paper has been withdrawn by the author(s) because somebody do not agree with my idea.
Zeros of derivatives of strictly non-real meromorphic functionsJan 03 2018A number of results are proved concerning the existence of non-real zeros of derivatives of strictly non-real meromorphic functions in the plane.
Derivatives of meromorphic functions of finite orderJun 19 2013A result is proved concerning meromorphic functions of finite order in the plane such that all but finitely many zeros of the second derivative are zeros of the first derivative.
Non-real zeros of linear differential polynomialsJul 23 2007Lower bounds are given for the number of non-real zeros of a second order linear differential polynomial with constant coefficients in a real entire function with finitely many non-real zeros.
On a Theorem of Macaulay on Colons of IdealsDec 09 2002A theorem of Macaulay on colons of ideals in polynomial rings is proved for homogeneous Gorenstein algebras.
Finite digraphs and KMS statesMay 18 2015The paper contains a description of the KMS states and ground states of a generalized gauge action on the C*-algebra of a finite graph.
Measuring Expansion Velocities in Type II-P SupernovaeSep 27 2011We estimate photospheric velocities of Type II-P supernovae using model spectra created with SYNOW, and compare the results with those obtained by more conventional techniques, such as cross-correlation, or measuring the absorption minimum of P Cygni ... More
End-point of the Electroweak Phase Transition using the auxiliary mass methodMay 26 1999We study the end-point of the Electroweak phase transition using the auxiliary mass method. The end point is $m_H\sim40$ (GeV) in the case $m_t=0$ (GeV) and strongly depends on the top quark mass. A first order phase transition disappears at $m_t\sim ... More
Cycles for rational maps with good reduction outside a prescribed setApr 26 2005Jul 17 2006Let $K$ be a number field and $S$ a fixed finite set of places of $K$ containing all the archimedean ones. Let $R_S$ be the ring of $S$-integers of $K$. In the present paper we study the cycles for rational maps of $\mathbb{P}_1(K)$ of degree $\geq2$ ... More
Bohr's Theorem for Monogenic Power SeriesOct 08 2007The main goal of this paper is to generalize Bohr's phenomenon from complex one-dimensional analysis to higher dimensions in the framework of Quaternionic Analysis.
The stable Galois correspondence for real closed fieldsJan 31 2017In previous work, the authors constructed and studied a lift of the Galois correspondence to stable homotopy categories. In particular, if $L/k$ is a finite Galois extension of fields with Galois group $G$, there is a functor $c_{L/k}^*$ from the $G$-equivariant ... More
Galois equivariance and stable motivic homotopy theoryJan 19 2014Sep 23 2015For a finite Galois extension of fields L/k with Galois group G, we study a functor from the G-equivariant stable homotopy category to the stable motivic homotopy category over k induced by the classical Galois correspondence. We show that after completing ... More
The large CP phase in B(s)-anti-B(s) mixing from primary scalar unparticlesOct 06 2008Oct 16 2008In this letter we consider the case of primary scalar unparticle contributions to B(d,s) mixing. With particular emphasis on the impact of the recent hint of new physics in the measurement of the B(s) mixing phase, phi(s), we determine the allowed parameter ... More
Multiplier Hopf and bi-algebrasJan 20 2009Jan 22 2009We propose a categorical interpretation of multiplier Hopf algebras, in analogy to usual Hopf algebras and bialgebras. Since the introduction of multiplier Hopf algebras by Van Daele in [A. Van Daele, Multiplier Hopf algebras, {\em Trans. Amer. Math. ... More
Origin of Pseudogap and Stripe Phase in High-Tc Superconductors in Two Dimensional PictureMar 30 2005Aug 19 2005The details of the pseudogap origin and other gap related properties discussed earlier for cuprates, in the framework of the paired cluster (PC) model, using three dimensional (3D) electronic density of states (DOS), are shown to remain valid even when ... More
Semiparametric posterior limitsMay 21 2013We review the Bayesian theory of semiparametric inference following Bickel and Kleijn (2012) and Kleijn and Knapik (2013). After an overview of efficiency in parametric and semiparametric estimation problems, we consider the Bernstein-von Mises theorem ... More
Production of transverse energy from minijets in next-to-leading order perturbative QCDFeb 01 2000Jun 13 2000We compute in next-to-leading order (NLO) perturbative QCD the transverse energy carried into the central rapidity unit of hadron or nuclear collisions by the partons freed in the few-GeV subcollisions. The formulation is based on a rapidity window and ... More
Lower limits for E_T and N_ch from pQCD & hydrodynamics at the central rapidity unit in central Au-Au collisions at RHICJun 21 1999Final state average transverse energy and charged particle multiplicity at the central rapidity unit of central Au-Au collisions at RHIC are studied within a framework of lowest order perturbative QCD and Bjorken's hydrodynamical picture. In particular, ... More
Mixed States of Composite Fermions Carrying Two and Four VorticesOct 09 2000There now exists preliminary experimental evidence for some fractions, such as $\nu$ = 4/11 and 5/13, that do not belong to any of the sequences $\nu=n/(2pn\pm 1)$, $p$ and $n$ being integers. We propose that these states are mixed states of composite ... More
Roton Instability of the Spin Wave Excitation in the Fully Polarized Quatum Hall State and the Phase Diagram at $ν= 2$Jan 04 2000We consider the effect of interactions on electrons confined to two dimensions at Landau level filling $\nu=2$, with the specific aim to determine the range of parameters where the fully polarized state is stable. We calculate the charge and the spin ... More
Real Space Multiple Scattering Calculations of Relativistic Electron Energy Loss SpectraAug 31 2007{\it Ab initio} calculations of relativistic electron energy loss spectra (REELS) are carried out using a generalization of the real-space Green's function code FEFF8 which is applicable to general aperiodic materials. Our approach incorporates relativistic ... More
Analytical studies of Spectrum Broadcast Structures in Quantum Brownian MotionMar 14 2016Spectrum Broadcast Structures are a new and fresh concept in the quantum-to-classical transition, introduced recently in the context of decoherence and the appearance of objective features in quantum mechanics. These are specific quantum state structures, ... More
Objectivisation In Simplified Quantum Brownian Motion ModelsJan 26 2015Feb 24 2015Birth of objective properties from subjective quantum world has been one of the key questions in the quantum-to-classical transition. Basing on recent results in the field, we study it in a quantum mechanical model of a boson-boson interaction-quantum ... More
Structure in the Lyman-Alpha ForestSep 10 1997The spatial distribution of Ly-alpha forest absorption systems toward a group of 8, closely spaced QSOs has been analysed and evidence for large scale structure has been found at <z> = 2.8. Our technique is based on the first and second moments of the ... More
Information transfer during the universal gravitational decoherenceDec 28 2016Nov 09 2017Recently Pikovski et al. have proposed in [ Pikovski I et al. 2015 Nature Phys. 11, 668] an intriguing universal decoherence mechanism, suggesting that gravitation may play a conceptually important role in the quantum-to-classical transition, albeit vanishingly ... More
Turning cool star X-ray spectra upside downOct 28 2004H1504+65 is a young white dwarf with an effective temperature of 200,000 K and is the hottest post-AGB star ever analysed with detailed model atmospheres. Chandra LETG+HRC-S spectra have revealed the richest X-ray absorption line spectrum recorded from ... More
New binary parameters for the symbiotic recurrent nova T Coronae BorealisNov 13 1997Apr 19 1998The amplitude of the ellipsoidal variability, the mass function, and the evolutionary limits on the component masses have been used to constrain the binary system parameters. Contrary to all previous studies, our analysis shows that the mass ratio of ... More
Renormalization of composite operatorsNov 10 2000Feb 06 2001The blocked composite operators are defined in the one-component Euclidean scalar field theory, and shown to generate a linear transformation of the operators, the operator mixing. This transformation allows us to introduce the parallel transport of the ... More
Highly ionized Fe X-ray lines at energies 7.7-8.6 keVSep 09 2008Fe XXV lines at 1.85 A (6.70 keV) and nearby Fe XXIV satellites have been widely used for determining the temperature of the hottest parts of solar flare and tokamak plasmas, though the spectral region is crowded and the lines are blended during flare ... More
Exploiting non-adiabatic density shifts in neutrino interactionsMay 13 2005Sep 05 2006In this paper, we give an exact analytical solution to the case of neutrinos propagating through multiple non-adiabatic density profiles. The resulting oscillation probability needs to be modelled in 4-dimensional parameter space $\{n,L_0,d,\Delta L\}$, ... More
Scalar condensate decay in a fermionic heat bath in the early universeMay 31 2004Aug 25 2005We consider one-loop thermal effects on the decay of a scalar field zero mode initially dominating the energy density of the universe. We assume fermionic decay channels and take into account the effects due to both particle and hole excitations, and ... More
Cluster Populations in Abell 2125 and 2218Jun 08 2005We combine new narrow band photometry with archival WFPC2 data for A2218 ($z$=0.18) and A2125 ($z$=0.25), two clusters with intermediate redshifts but very different cluster properties, in order to examine the evolution of galaxy populations. A2218 is ... More
Narrow Band Continuum Colors of Distant Cluster PopulationsMar 11 2003In this poster, we present new results on narrow band photometry for A2218 ($z$=0.18) and A2125 ($z$=0.25), two clusters with similar redshifts, but very different cluster properties. A2218 is a dense, elliptical-rich cluster (Bautz-Morgan type II) similar ... More
Gauge Invariant three Boson Vertices and their Ward Identities in the Standard ModelMar 19 1995In the context of the Standard Model we extend the S--matrix pinch technique for non--conserved currents to the case of three boson vertices. We outline in detail how effective gauge invariant three boson vertices can be constructed, with all three incoming ... More
Superconducting elliptical cavitiesJan 12 2012We give a brief overview of the history, state of the art, and future for elliptical superconducting cavities. Principles of the cell shape optimization, criteria for multi-cell structures design, HOM damping schemes and other features are discussed along ... More
Conserving approximations for the attractive Holstein and Hubbard modelsFeb 06 1994Conserving approximations are applied to the attractive Holstein and Hubbard models (on an infinite-dimensional hypercubic lattice). All effects of nonconstant density of states and vertex corrections are taken into account in the weak-coupling regime. ... More
High Energy Nuclear CollisionsNov 15 1999Highlights of the results from ultrarelativistic heavy ion collisions at CERN-SPS are reviewed. In particular, I discuss how the experimental results indicate that a collective strongly interacting system has been produced, and what are the implications ... More
The Glassy Wormlike ChainMay 03 2007Jul 30 2007We introduce a new model for the dynamics of a wormlike chain in an environment that gives rise to a rough free energy landscape, which we baptise the glassy wormlike chain. It is obtained from the common wormlike chain by an exponential stretching of ... More
Existence Theorems for $\fracπ{n}$ Vortex ScatteringMar 02 1995The analysis of $90^{\circ}$ vortex-vortex scattering is extended to $\frac{\pi}{n}$ scattering in all head-on collisions of $n$ vortices in the Abelian Higgs model. A Cauchy problem with initial data that describe the scattering of $n$ vortices is formulated. ... More
Optical colour maps of Seyfert galaxies. II. More Seyfert 2sMay 22 1998We present optical broad band B-I colour maps of a further sample of 10 Seyfert 2 galaxies. In these bands, the contribution from emission lines to the total flux is small, and hence the images predominantly trace the continuum distribution. As in our ... More
On the Role of Irradiation and Evaporation in Strongly Irradiated Accretion Disks in the Black Hole X-ray Binaries: Toward an Understanding of FREDs and Secondary MaximaApr 12 2000We examine a new paradigm to account for the exponential decay seen in the light curves of some of the bright X-ray novae. These systems show an exponential decay in soft X-rays with an e-folding time constant of ~30 d. We investigate a scenario in which ... More
Reply to the Comment on ``On the uncertainty relations and squeezed states for the quantum mechanics on a circle''May 13 2003In the preceding Comment (quant-ph/0209032) Trifonov disputes our recently proposed uncertainty relations for a quantum particle on a circle. He states that (i) the quantity $\Delta^2(\hat\phi)$ introduced by us representing the uncertainty of the angle ... More
Groups and nonlinear dynamical systems. Chaotic dynamics on the SU(2)xSU(2) groupJan 14 1998In our previous paper: K. Kowalski and J. Rembieli\'nski, Groups and nonlinear dynamical systems. Dynamics on the SU(2) group, Physica D 99, 237 (1996), we introduced an abstract Newton-like equation on a general Lie algebra such that submanifolds fixed ... More
Coherent states of a charged particle in a uniform magnetic fieldSep 15 2005The coherent states are constructed for a charged particle in a uniform magnetic field based on coherent states for the circular motion which have recently been introduced by the authors.
On the uncertainty relations and squeezed states for the quantum mechanics on a circleFeb 13 2002The uncertainty relations for the position and momentum of a quantum particle on a circle are identified minimized by the corresponding coherent states. The sqeezed states in the case of the circular motion are introduced and discussed in the context ... More
N-Galilean conformal algebras and higher derivatives LagrangiansSep 26 2012It is shown that the N-Galilean conformal algebra, with N-odd, is the maximal symmetry algebra of the free Lagrangian involving (N+1)/2-th order time derivative.
The Strange Quark Mass From Flavor Breaking in Hadronic Tau DecaysMay 16 2000Sep 08 2000The strange quark mass is extracted from a finite energy sum rule (FESR) analysis of the flavor-breaking difference of light-light and light-strange quark vector-plus-axial-vector correlators, using spectral functions determined from hadronic tau decay ... More
Null dust in canonical gravityApr 18 1997We present the Lagrangian and Hamiltonian framework which incorporates null dust as a source into canonical gravity. Null dust is a generalized Lagrangian system which is described by six Clebsch potentials of its four-velocity Pfaff form. The Dirac--ADM ... More
MontePython: Implementing Quantum Monte Carlo using PythonSep 22 2006We present a cross-language C++/Python program for simulations of quantum mechanical systems with the use of Quantum Monte Carlo (QMC) methods. We describe a system for which to apply QMC, the algorithms of variational Monte Carlo and diffusion Monte ... More
The Wigner function in the relativistic quantum mechanicsMar 21 2019A detailed study is presented of the relativistic Wigner function for a quantum spinless particle evolving in time according to the Salpeter equation.
A Frequency Domain Steganography using Z Transform (FDSZT)Feb 20 2012Image steganography is art of hiding information onto the cover image. In this proposal a transformed domain based gray scale image authentication/data hiding technique using Z transform (ZT) termed as FDSZT, has been proposed. ZTransform is applied on ... More
Quantitative spectroscopy of close binary starsAug 19 2011Aug 23 2011The method of spectral disentangling has now created the opportunity for studying the chemical composition in previously inaccessible components of binary and multiple stars. This in turn makes it possible to trace their chemical evolution, a vital aspect ... More
The Kadets 1/4 theorem for polynomialsDec 20 2007We determine the maximal angular perturbation of the (n+1)th roots of unity permissible in the Marcinkiewicz-Zygmund theorem on L^p means of polynomials of degree at most n. For p=2, the result is an analogue of the Kadets 1/4 theorem on perturbation ... More
Centrality Dependence of Strangeness Enhancement in Ultrarelativistic Heavy Ion Collisions - a Core-Corona EffectOct 24 2008May 19 2009In ultrarelativistic heavy ion collisions, the multiplicity of multi-strange baryons per participating nucleon increases with centrality in a different fashion for different systems and energies. At RHIC, for copper+copper (CuCu) collisions the increase ... More
Sampling from manifold-restricted distributions using tangent bundle projectionsNov 13 2018A common problem in Bayesian inference is the sampling of target probability distributions at sufficient resolution and accuracy to estimate the probability density, and to compute credible regions. Often by construction, many target distributions can ... More
Measuring sigma(e+ e- --> hadrons) with Tagged Photons at Electron Positron CollidersJan 10 2001A Monte Carlo generator has been constructed to simulate the reaction e+ e- --> gamma + 2 pions and gamma + 4 pions, where the photon is assumed to be observed in the detector. Predictions are presented for cms energies of 1GeV, 3GeV and 10GeV, corresponding ... More
Compressible $ν=\frac{1}{2}$ state in a finite size study?Sep 05 1994This is a comment published in Phys. Rev. Lett. vol. 73, page 1051 (1994).
The Expanding Photosphere Method: Progress and ProblemsApr 04 2007Distances to well-observed Type II-P SNe are determined from an updated version of the Expanding Photosphere Method (EPM), based on recent theoretical models. The new EPM distances show good agreement with other independent distances to the host galaxies ... More
Discovery of a new particle named a coretron and a non-baryionic dark matterAug 21 2000Dec 30 2000%auto-ignore This paper has been withdrawn by the author(s) since somebody do not agree with my idea.
Multichannel dynamical symmetry and cluster-coexistenceFeb 02 2013Jun 17 2013A composite symmetry of the nuclear structure, called multichannel dynamical symmetry is established. It can describe different cluster configurations (defined by different reaction channels) in a unified framework, thus it has a considerable predictive ... More
The Auxiliary Mass Method beyond the Local Potential ApproximationSep 09 1999Sep 14 1999We show that the evolution equation of the effective potential in the auxiliary mass method corresponds to a leading approximation of a certain series. This series is derived from an evolution equation of an effective action using a derivative expansion. ... More
The Computational Complexity of the Lorentz Lattice GasJul 14 1996The Lorentz lattice gas is studied from the perspective of computational complexity theory. It is shown that using massive parallelism, particle trajectories can be simulated in a time that scales logarithmically in the length of the trajectory. This ... More
Non-real zeros of derivatives of meromorphic functionsApr 14 2014Jan 25 2019A number of results are proved concerning non-real zeros of derivatives of real and strictly non-real meromorphic functions in the plane
Good spectral triples, associated Lie groups of Campbell-Baker-Hausdorff type and unimodularityMar 23 1999The notion of good spectral triple is initiated. We prove firstly that any regular spectral triple may be embedded in a good spectral triple, so that, in non-commutative geometry, we can restricts to deal only with good spectral triples. Given a good ... More