id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
astro-ph/9401046 | Can We Identify Lensed Gamma Ray Bursts? | A gravitationally lensed gamma-ray burst (GRB) would appear as multiple
bursts with identical light curves, separated in time and differing only by the
scaling of their amplitudes. However, noise may make them difficult to identify
as lensed images. Furthermore, faint, intrinsically similar, yet distinct light
curves m... | 1994-01-27 | 2009-10-22 | [
"astro-ph"
] | M.A. Nowak and S.A. Grossman |
astro-ph/9401045 | $\gamma$-Ray Pulsars: Emission Zones and Viewing Geometries | There are now a half dozen young pulsars detected in high energy photons by
the Compton GRO, showing a variety of emission efficiencies and pulse profiles.
We present here a calculation of the pattern of high energy emission on the sky
in a model which posits $\gamma$-ray production by charge depleted gaps in the
outer... | 1994-01-25 | 2009-10-22 | [
"astro-ph"
] | Roger W. Romani and I.-A. Yadigaroglu |
astro-ph/9401043 | A Standard Model Solution to the Solar Neutrino Problem? | An imroved standard solar model, with more accurate input parameters and more
accurate treatment of plasma physics effects, predicts a solar neutrino flux
which is consistent within experimental uncertainties with the solar neutrino
observations after 1986. | 1994-01-25 | 2009-09-25 | [
"astro-ph"
] | Arnon Dar and Giora Shaviv |
astro-ph/9401040 | Synthesis of Galactic Stellar Populations and Expected Constraints from
Infrared Surveys | Models of population synthesis for the Galaxy have been developed in order to
understand galactic structure and evolution. They allow to test scenarii of
evolution by comparisons between model predictions and observed distributions.
Forthcoming near-infrared surveys will enormously increase the amount of
information ab... | 1994-01-24 | 2009-10-22 | [
"astro-ph"
] | A.C. Robin |
astro-ph/9401044 | The Contribution of the Obscuring Torus to the X--Ray Spectrum of
Seyfert Galaxies: A Test for the Unification Model | The presence of an obscuring torus around the nucleus of Seyfert galaxies, as
supposed in the popular unification scheme, can strongly modify the X--ray
spectrum for both type 1 and 2 Seyfert galaxies. We find that if the torus is
Compton thick, it can scatter at small angles a significant fraction of the
nuclear radia... | 1994-01-24 | 2015-06-24 | [
"astro-ph"
] | Gabriele Ghisellini, Francesco Haardt and Giorgio Matt |
astro-ph/9401041 | Upper Limits on Metals in Quasar Lyman-Alpha Forest Clouds: Absence of C
IV Lines in Echelle Spectra | Recently Lu presented tentative evidence for C IV lines in QSO Lyman-alpha
forest systems with strong lines. We have performed a similar search for C IV
in our 10 km/sec echelle spectra of the bright QSO HS~1946+7658. We shifted the
spectra to align the expected positions of the C IV lines in 65 Lyman-alpha
systems, th... | 1994-01-24 | 2009-10-22 | [
"astro-ph"
] | D. Tytler and X.-M. Fan |
astro-ph/9401042 | Jordan-Brans-Dicke Stochastic Inflation | We study stochastic inflation in the presence of a dynamical gravitational
constant. We describe the Arnowitt--Deser--Misner formalism for
Jordan--Brans--Dicke theory of gravity with an inflaton field. The inflaton and
dilaton scalar fields can be separated into coarse-grained background fields
and quantum fluctuations... | 1994-01-24 | 2009-10-22 | [
"astro-ph",
"gr-qc",
"hep-th"
] | Juan Garcia-Bellido |
astro-ph/9401039 | Topological Defects in Cosmology | The scenario of a cosmology with topological defects is surveyed starting
from the field theoretic aspects and ending with a description of large-scale
structure formation and magnetic field generation. (Lectures delivered at ICTP,
Trieste, July 1993.) | 1994-01-23 | 2007-05-23 | [
"astro-ph",
"hep-ph"
] | Tanmay Vachaspati |
astro-ph/9401038 | Analysis of Spots in the COBE DMR First Year Anisotropy Maps | After the detection of structure in the microwave sky, the characterization
of the observed features may be a useful guide to current and future
experiments. The first year COBE-DMR sky maps were analyzed in order to
identify the most significant hot and cold spots. The statistical significance
of potential spots of co... | 1994-01-23 | 2007-05-23 | [
"astro-ph"
] | S. Torres |
astro-ph/9401036 | The Radio Nebula of the Soft Gamma Ray Repeater SGR 1806-20 | Earlier we had suggested that G10.0-0.3, a non-thermal nebula, most likely an
old supernova remnant (SNR), was associated with the soft gamma repeater (SGR)
SGR 1806-20. Here we present new radio images obtained at the Very Large Array
(VLA) of the non-thermal radio nebula G10.0-0.3. The nebula is a plerion with a
hier... | 1994-01-21 | 2009-10-22 | [
"astro-ph"
] | S. R. Kulkarni, D. A. Frail, N. E. Kassim, T. Murakami and G. Vasisht |
astro-ph/9401037 | Lick Galaxy Correlation Function Revised | We re-estimate the angular 2-point galaxy correlation function from the Lick
galaxy catalogue. We argue that the large-scale gradients observed in the Lick
catalogue are dominated by real clustering and therefore they should not be
subtracted prior to the estimation of the 2-p correlation function. We find
that if no s... | 1994-01-21 | 2007-05-23 | [
"astro-ph"
] | M. Plionis and S. Borgani |
astro-ph/9401035 | Microlensing by the Milky Way Halo | The measurements of the possible gravitational microlensing events are
analysed with a simple yet accurate disc--halo model of the Milky Way Galaxy.
This comprises a luminous exponential disc embedded in a flattened dark matter
halo with density varying like ${\rm distance}^{-1.8}$. Including a disc has
the important e... | 1994-01-19 | 2016-06-08 | [
"astro-ph"
] | N.W.Evans, J.Jijina |
astro-ph/9401034 | An Outer Gap Model of High-Energy Emission from Rotation-Powered Pulsars | We describe a refined calculation of high energy emission from
rotation-powered pulsars based on the Outer Gap model of Cheng, Ho \&~Ruderman
(1986a,b). We have improved upon previous efforts to model the spectra from
these pulsars (e. g. Cheng, et al. 1986b; Ho 1989) by following the variation
in particle production a... | 1994-01-18 | 2009-10-22 | [
"astro-ph"
] | J. Chiang and R. W. Romani |
astro-ph/9401033 | Light Deflection in Perturbed Friedmann Universes | In this letter a new formula for light deflection is derived using only
physically observable concepts. The general result is specialized to
cosmological perturbation theory and expressed in terms of gauge--invariant
perturbation variables. The resulting scalar, vector and tensor equations are
supplemented by simple ex... | 1994-01-18 | 2009-10-22 | [
"astro-ph"
] | Ruth Durrer |
astro-ph/9401028 | High-Resolution Imaging of Faint Blue Galaxies | We have used HRCam on the CFHT to obtain subarcsecond images of 26 galaxies
with z=0.1--0.7. The primary sample of 17 galaxies have enhanced star formation
indicated by [OII] equivalent widths greater than 20\AA, while the comparison
sample of 9 galaxies have equivalent widths less than 10\AA. By fitting disks
or bulge... | 1994-01-17 | 2015-06-24 | [
"astro-ph"
] | Matthew Colless, David Schade, T J Broadhurst and R S Ellis |
astro-ph/9401031 | Fireballs and Gamma-Ray Bursts | The sudden release of copious $\g$-ray photons into a compact region creates
an opaque photon--lepton fireball due to the prolific production of
electron--positron pairs. The photons that we observe in the bursts emerge only
at the end of the fireball phase after it expanded sufficiently to become
optically thin or aft... | 1994-01-17 | 2007-05-23 | [
"astro-ph"
] | Tsvi Piran |
astro-ph/9401030 | Gamma-Ray Bursts from Neutron Star Mergers | Binary neutron stars merger (NS$^2$M) at cosmological distances is probably
the only $\gamma$-ray bursts model based on an independently observed
phenomenon which is known to be taking place at a comparable rate. We describe
this model, its predictions and some open questions. | 1994-01-17 | 2015-06-24 | [
"astro-ph"
] | T. Piran |
astro-ph/9401032 | Merging Neutron Stars I: Initial Results for Coalescence of
Non-Corotating Systems | We present 3D Newtonian simulations of the coalescence of two neutron stars,
using a Smoothed Particle Hydrodynamics (SPH) code. We begin the simulations
with the two stars in a hard, circular binary, and have them spiral together as
angular momentum is lost through gravitational radiation at the rate predicted
by mode... | 1994-01-17 | 2009-10-22 | [
"astro-ph"
] | M. B. Davies, W. Benz, T. Piran, and F. K. Thielemann |
astro-ph/9401029 | A Model for the Spectral Energy Distribution of the Ultraluminous Galaxy
IRAS F10214+4724 | If indeed early type galaxies used up most of their gas to form stars in a
time short compared to their collapse time and if a roughly constant fraction
of metals is locked up in dust grains, these galaxies may easily become opaque
to starlight and emit most of their luminosity in the far-IR. The corresponding
spectral... | 1994-01-17 | 2016-06-08 | [
"astro-ph"
] | P. Mazzei and G. De Zotti |
astro-ph/9401027 | Hydrodynamics of Binary Coalescence.I. Polytropes with Stiff Equations
of State | We have performed a series of three-dimensional hydrodynamic calculations of
binary coalescence using the smoothed particle hydrodynamics (SPH) method. The
initial conditions are exact polytropic equilibrium configurations with $\gam >
5/3$, on the verge of dynamical instability. We calculate the emission of
gravitatio... | 1994-01-16 | 2011-07-18 | [
"astro-ph"
] | F. A. Rasio and S. L. Shapiro |
astro-ph/9401025 | A comparison of one and two dimensional models of transonic accretion
discs around collapsed objects | We construct models of the inner part of a transonic adiabatic accretion disc
assuming constant specific angular momentum taking the vertical structure fully
into account.\\ For comparison purposes, we construct the corresponding one
dimensional viscous disc models derived under vertical averaging assumptions.
The cond... | 1994-01-16 | 2015-06-24 | [
"astro-ph"
] | J.C.B. Papaloizou, E. Szuszkiewicz |
astro-ph/9401026 | Collapse of Primordial Gas Clouds and the Formation of Quasar Black
Holes | The formation of quasar black holes during the hydrodynamic collapse of
protogalactic gas clouds is discussed. The dissipational collapse and long-
term dynamical evolution of these systems is analysed using three-dimensional
numerical simulations. The calculations focus on the final collapse stages of
the inner baryon... | 1994-01-16 | 2009-10-22 | [
"astro-ph"
] | A. Loeb and F. A. Rasio |
astro-ph/9401023 | Stochastic fluctuations and structure formation in the Universe | It is shown that the evolution of the density perturbations during certain
eras of substantial entropy generation in the universe can be described in the
scheme of the KPZ equation. Therefore, the influence on cosmological structure
formation by stochastic forces arising from various dissipations can be studied
through... | 1994-01-14 | 2009-10-22 | [
"astro-ph"
] | A. Berera and L.Z.Fang |
astro-ph/9401024 | The $^7$Be Solar Neutrino Line: A Reflection of the Central Temperature
Distribution of the Sun | A precise test of the theory of stellar evolution can be performed by
measuring the average difference in energy between the neutrino line produced
by ${\rm ^7Be}$ electron capture in the solar interior and the corresponding
neutrino line produced in a terrestrial laboratory. This energy shift is
calculated to be 1.29~... | 1994-01-14 | 2009-10-22 | [
"astro-ph"
] | John N. Bahcall |
astro-ph/9401021 | Large Scale Morphological Segregation in Optically Selected Galaxy
Redshift Catalogs | We present the results of an exhaustive analysis of the morphological
segregation of galaxies in the CfA and SSRS catalogs through the scaling
formalism. Morphological segregation between ellipticals and spirals has been
detected at scales up to 15-20 h$^{-1}$ Mpc in the CfA catalog, and up to 20-30
h$^{-1}$ Mpc in the... | 1994-01-13 | 2009-10-22 | [
"astro-ph"
] | R. Dominguez-Tenreiro, A. Campos, M.A. G\'omez-Flechoso and G. Yepes |
astro-ph/9401022 | Dynamics of Cosmic Flows | CONTENTS: 1. INTRODUCTION 2. GRAVITATIONAL INSTABILITY 3. MEASURING PECULIAR
VELOCITIES 4. ANALYSIS OF OBSERVED PECULIAR VELOCITIES 5. PREDICTED MOTIONS
FROM THE GALAXY DISTRIBUTION 6. TESTING BASIC HYPOTHESES 7. THE INITIAL
FLUCTUATIONS 8. THE VALUE OF OMEGA 9. DISCUSSION: ARE THE HYPOTHESES JUSTIFIED?
REFERENCES | 1994-01-13 | 2009-10-22 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | Avishai Dekel |
astro-ph/9401020 | A Spectroscopic Method to Measure Macho Proper Motions | A Massive Compact Halo Object (Macho) that lenses a background star will
magnify different parts of the rotating stellar disk by varying amounts. The
differential magnification will cause a shift in the centroid of the star's
spectral lines during the lensing event. The shift is proportional to the ratio
of the stellar... | 1994-01-12 | 2009-10-22 | [
"astro-ph"
] | Dan Maoz and Andrew Gould |
astro-ph/9401018 | A NLTE study of neutral boron in solar-type stars | The formation of the resonance lines of neutral boron in solar-type stellar
atmospheres is investigated taking into account effects of departures from
local thermodynamic equilibrium (NLTE effects). The latter are due to a
combination of overionisation and optical pumping in resonance lines, both
caused by the hot, non... | 1994-01-12 | 2007-05-23 | [
"astro-ph"
] | Dan Kiselman |
astro-ph/9401019 | Empirical Constraints on Cosmological Gamma-Ray Bursts | We place empirical constraints on the physical properties of $\gamma-$ray
burst events at cosmological distances. In particular we derive probability
distributions for the radiation energy $E_\gamma$, the minimum Lorentz factor
$\gamma_{\rm min}$, the maximum baryonic mass $M_{\rm max}$ and the upper bound
on the surro... | 1994-01-12 | 2016-08-30 | [
"astro-ph"
] | Eric Woods and Abraham Loeb |
astro-ph/9401017 | Modelling the Power Spectrum of Density Fluctuations: A Phenomenological
Approach | We show how, based on considerations on the observed form of the galaxy
2-point spatial correlation function xi(r), a very simplified -- yet
surprisingly effective -- model for the linear density fluctuations power
spectrum can be constructed. We first relate the observed large-scale shape of
xi(r) to a power-law form ... | 1994-01-12 | 2009-10-22 | [
"astro-ph"
] | Enzo Branchini, Luigi Guzzo & Riccardo Valdarnini |
astro-ph/9401014 | Observational Constraints on the Spectral Index | We address the possibility of bounding the spectral index $n$ of primordial
density fluctuations, using both the cosmic microwave background (cmb)
anisotropy and data on galaxies and clusters. Each piece of galaxy and cluster
data is reduced to a value of $\sigma(R)$ (the linearly evolved {\em rms}
density contrast wit... | 1994-01-11 | 2008-02-03 | [
"astro-ph",
"hep-ph"
] | Andrew R Liddle and David H Lyth |
astro-ph/9401016 | Origin of Quasar Progenitors from the Collapse of Low-Spin Cosmological
Perturbations | We show that seeds for quasar black holes could have originated from the
initial cosmological collapse of overdense regions with unusually small
rotation. The gas in these rare regions collapses into a compact disk that
shrinks on a short viscous time scale. Using an analytical model, we calculate
the low-spin tail of ... | 1994-01-11 | 2009-09-25 | [
"astro-ph"
] | Daniel J. Eisenstein and Abraham Loeb (Harvard Univ.) |
astro-ph/9401015 | Angular Power Spectrum of the Microwave Background Anisotropy seen by
the COBE Differential Microwave Radiometer | The angular power spectrum estimator developed by Peebles (1973) and Hauser &
Peebles (1973) has been modified and applied to the 2 year maps produced by the
COBE DMR. The power spectrum of the real sky has been compared to the power
spectra of a large number of simulated random skies produced with noise equal
to the o... | 1994-01-11 | 2009-09-25 | [
"astro-ph"
] | E. L. Wright, G. F. Smoot, C. L. Bennett and P. M. Lubin |
astro-ph/9401013 | Time delay controversy on QSO 0957+561 not yet decided | We present a new analysis of previously published optical and radio data sets
of the gravitationally lensed quasar 0957+561 A,B with the aim of determining
the time delay between its two images. We use a non-parametric estimate of the
dispersion of the combined data set where, however, we only make use of
alternating n... | 1994-01-11 | 2007-05-23 | [
"astro-ph"
] | J.Pelt, W.Hoff, R.Kayser, S.Refsdal, and T.Schramm |
astro-ph/9401011 | False Vacuum Inflation with Einstein Gravity | We investigate chaotic inflation models with two scalar fields, such that one
field (the inflaton) rolls while the other is trapped in a false vacuum state.
The false vacuum becomes unstable when the inflaton field falls below some
critical value, and a first or second order transition to the true vacuum
ensues. Partic... | 1994-01-10 | 2009-10-22 | [
"astro-ph",
"gr-qc",
"hep-th"
] | Edmund J Copeland, Andrew R Liddle, David H Lyth, Ewan D Stewart and
David Wands |
astro-ph/9401009 | The virial theorem for action-governed theories | We describe a simple derivation of virial relations (VR) for arbitrary
action-governed systems. These follow directly from the action with no need to
go via the equations of motion. When some of the degrees of freedom are of the
same type a tensor virial theorem presents itself. Further generalizations are
discussed.
... | 1994-01-10 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | M. Milgrom |
astro-ph/9401012 | Cosmic Temperature Fluctuations from Two Years of COBE DMR Observations | The first two years of COBE DMR observations of the CMB anisotropy are
analyzed and compared with our previously published first year results. The
results are consistent, but the addition of the second year of data increases
the precision and accuracy of the detected CMB temperature fluctuations. The
two-year 53 GHz da... | 1994-01-10 | 2008-11-26 | [
"astro-ph"
] | C. Bennett, A. Kogut, G. Hinshaw, A. Banday, E. Wright, K. Gorski, D.
Wilkinson, R. Weiss, G. Smoot, S. Meyer, J. Mather, P. Lubin, K. Loewenstein,
C. Lineweaver, P. Keegstra, E. Kaita, P. Jackson, E. Cheng |
astro-ph/9401010 | Radio Emitting Dust in the Free-Electron Layer of Spiral Galaxies:
Testing the Disk/Halo Interface | We present a study of the radio emission from rotating, charged dust grains
immersed in the ionized gas constituting the thick, H$\alpha$-emitting disk of
many spiral galaxies. Using up-to-date optical constants, the charge on the
grains exposed to the diffuse galactic UV flux has been calculated. An
analytical approxi... | 1994-01-10 | 2009-10-22 | [
"astro-ph"
] | A. Ferrara & R.J. Dettmar |
astro-ph/9401007 | Cosmological Perturbation Theory in the Synchronous vs. Conformal
Newtonian Gauge | We present a systematic treatment of the linear theory of scalar
gravitational perturbations in the synchronous gauge and the conformal
Newtonian (or longitudinal) gauge. We first derive the transformation law
relating the two gauges. We then write down in parallel in both gauges the
coupled, linearized Boltzmann, Eins... | 1994-01-07 | 2009-10-22 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | Chung-Pei Ma and Edmund Bertschinger |
astro-ph/9401006 | The Scalar Field Potential in Inflationary Models: Reconstruction and
Further Constraints | In this paper, we present quantitative constraints on the scalar field
potential for a general class of inflationary models. (1) We first consider the
reconstruction of the inflationary potential for given primordial density
fluctuation spectra. Our work differs from previous work on reconstruction in
that we find a se... | 1994-01-07 | 2009-10-22 | [
"astro-ph"
] | Fred C. Adams and Katherine Freese |
astro-ph/9401008 | The Origin of the Magellanic Stream | SHORTENED ABSTRACT: We present numerical investigations designed to
critically test models of the origin of the Magellanic Stream. The most
developed model is the tidal model which fails to reproduce several of its
characteristic properties. We suggest an alternative model for the origin of
the Stream which can explain... | 1994-01-07 | 2015-06-24 | [
"astro-ph"
] | Ben Moore and Marc Davis |
astro-ph/9401005 | Finite Source Sizes and the Information Content of MACHO-Type Lens
Search Light Curves | If the dark halo matter is primarily composed of MACHOs toward the lower end
of the possible detection range ($ < 10^{-3}$ $M_{\odot}$) a fraction of the
lens detection events should involve the lens crossing directly in front of the
disk of the background star. Previously, Nemiroff (1987) has shown that each
crossing ... | 1994-01-05 | 2009-10-22 | [
"astro-ph"
] | Robert J. Nemiroff (NASA/GSFC and George Mason U.) and W.A.D. Thulsi
Wickramasinghe (U. Penn) |
astro-ph/9401003 | Small-Scale Cosmic Microwave Background Anisotropies as a Probe of the
Geometry of the Universe | We perform detailed calculations of cosmic microwave background (CMB)
anisotropies in a CDM-dominated open universe with primordial adiabatic density
perturbations for a variety of reionization histories. We show that to a great
extent, the CMB anisotropies depend only on the geometry of the Universe, which
in a matter... | 1994-01-04 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Marc Kamionkowski, David N. Spergel, and Naoshi Sugiyama |
astro-ph/9401004 | Causality in Strong Shear Flows | It is well known that the standard transport equations violate causality when
gradients are large or when temporal variations are rapid. We derive a modified
set of transport equations that satisfy causality. These equations are obtained
from the underlying Boltzmann equation. We use a simple model for particle
collisi... | 1994-01-04 | 2009-10-22 | [
"astro-ph"
] | Ramesh Narayan, Abraham Loeb, and Pawan Kumar |
astro-ph/9401002 | Nucleation of quark matter bubbles in neutron stars | The thermal nucleation of quark matter bubbles inside neutron stars is
examined for various temperatures which the star may realistically encounter
during its lifetime. It is found that for a bag constant less than a critical
value, a very large part of the star will be converted into the quark phase
within a fraction ... | 1994-01-03 | 2009-12-30 | [
"astro-ph",
"hep-ph"
] | Michael L. Olesen and Jes Madsen |
astro-ph/9401001 | Large-Scale Mass Distribution Behind the Galactic Plane | We map the smoothed mass-density distribution in the Galactic zone of
avoidance (zoa), within $6000\kms$ of the Local Group, using potent
reconstruction from peculiar velocities of galaxies. The interpolation into the
zoa is based on the assumed gravitational nature of the velocity field implying
a potential flow. The ... | 1994-01-03 | 2015-06-24 | [
"astro-ph"
] | Tsafrir Kolatt, Avishai Dekel and Ofer Lahav |
chao-dyn/9412013 | Mean Field Theory for Lyapunov Exponents and KS Entropy in Lorentz
Lattice Gases | Cellular automata lattice gases are useful systems for systematically
exploring the connections between non-equilibrium statisitcal mechanics and
dynamical systems theory. Here the chaotic properties of a Lorentz lattice gas
are studied analytically and by computer simulations. The escape-rates,
Lyapunov exponents, and... | 1994-12-26 | 2019-08-17 | [
"chao-dyn",
"comp-gas",
"nlin.CD",
"nlin.CG"
] | M.H. Ernst, J.R. Dorfman, R. Nix, and D. Jacobs (Inst. for Theor.
Physics, Univ.of Utrecht, The Netherlands) |
chao-dyn/9412012 | Lyapunov Exponents and KS Entropy for the Lorentz Gas at Low Densities | The Lyapunov exponents and the KS entropy for a two dimensional Lorentz gas
at low densities are defined for general non-equilibrium states and calculated
with the use of a Lorentz-Boltzmann type equation. In equilibrium the density
dependence of these quantities predicted by Krylov is recovered and explicit
expression... | 1994-12-26 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Henk van Beijeren (Inst.Theor.Physics,Utrecht) and J.R. Dorfman (IPST,
Maryland) |
chao-dyn/9412009 | On the local Hamiltonian structure of vector fields | We derive a canonical form for smooth vector fields on $\Re^{n+1}$. We use
this to demonstrate the local multi-Hamiltonian nature of the corresponding
flows. Associated with the canonical form is an inhomogenious linear PDE whose
solutions provide conserved measures. These can be used to construct the local
Hamiltonian... | 1994-12-17 | 2009-10-22 | [
"chao-dyn",
"nlin.CD",
"nlin.SI",
"solv-int"
] | P. Crehan |
chao-dyn/9412010 | When are vector fields Hamiltonian? | Dynamical systems can be quantised only if they are Hamiltonian. This prompts
the question from which our talk gets its title. We show how the simple
predator-prey equation and the damped harmonic oscillator can be considered to
be Hamiltonian with respect to an infinite number of non-standard Poisson
brackets. This ra... | 1994-12-17 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | P. Crehan |
chao-dyn/9412011 | The Crucial Formula for Determination of the Occurrence of the
Non-Chaotic States in the rf-biased Nonlinear Oscillators | The crucial formulas to determine the non-chaotic states in the rf-biased
nonlinear oscillators are derived from the numerical experiments. The nature of
these formulas, which depends on symmetrical properties of the potential well,
in terms of the driven-frequency as a function of the damping constant k is
investigate... | 1994-12-17 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | T.H. Yang, C.S. Wang, J.C. Huang, Y.S. Gou |
chao-dyn/9412008 | Cycle expansions with pruned orbits have branch points | Cycle expansions are an efficient scheme for computing the properties of
chaotic systems. When enumerating the orbits for a cycle expansion not all
orbits that one would expect at first are present --- some are pruned. This
pruning leads to convergence difficulties when computing properties of chaotic
systems. In numer... | 1994-12-15 | 2015-06-24 | [
"chao-dyn",
"nlin.CD"
] | Ronnie Mainieri (Los Alamos National Lab) |
chao-dyn/9412007 | Spectral Statistics in the Quantized Cardioid Billiard | The spectral statistics in the strongly chaotic cardioid billiard are
studied. The analysis is based on the first 11000 quantal energy levels for odd
and even symmetry respectively. It is found that the level-spacing distribution
is in good agreement with the GOE distribution of random-matrix theory. In case
of the num... | 1994-12-14 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | A. Baecker, F. Steiner (II. Institut fuer Theoretische Physik,
Universitaet Hamburg) and P. Stifter (Abteilung fuer Quantenphysik,
Universitaet Ulm) |
chao-dyn/9412006 | Estimation of embedding dimension by experimental data. Part 1 | In connection with the investigations of initial stages of appearance of
turbulence in the current-carrying mediums and also the investigations of
relaxation oscillations in thin-film bridges of high-temperature superconductor
$Y Ba_2 Cu_3 O_{7-x}$ some problems of estimation of asymptotical parameters of
chaotic dynam... | 1994-12-14 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Konstantin E. Bobrov, Nickolas B. Volkov, Alexander M. Iskoldsky,
Vyacheslav N. Skokov |
chao-dyn/9412005 | Numerical Renormalization Group Calculations For Similarity Solutions
and Travelling Waves | We present a numerical implementation of the renormalization group (RG) for
partial differential equations, constructing similarity solutions and
travelling waves. We show that for a large class of well-localized initial
conditions, successive iterations of an appropriately defined discrete RG
transformation in space a... | 1994-12-09 | 2009-10-22 | [
"chao-dyn",
"cond-mat",
"gr-qc",
"nlin.CD"
] | Lin-Yuan Chen(Institute for Theoretical Physics, Santa Barbara), Nigel
Goldenfeld(Department of Physics, University of Illinois at Urbana-Champaign) |
chao-dyn/9412004 | Gaussian Fluctuation in Random Matrices | Let $N(L)$ be the number of eigenvalues, in an interval of length $L$, of a
matrix chosen at random from the Gaussian Orthogonal, Unitary or Symplectic
ensembles of ${\cal N}$ by ${\cal N}$ matrices, in the limit ${\cal
N}\rightarrow\infty$. We prove that $[N(L) - \langle N(L)\rangle]/\sqrt{\log
L}$ has a Gaussian dist... | 1994-12-06 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Ovidiu Costin (Department of Mathematics, Rutgers University), Joel L.
Lebowitz (Department of Mathematics and Physics, Rutgers University) |
chao-dyn/9412003 | Global Existence and Large Time Asymptotic Bounds of $L^{infty}$
Solutions of Thermal Diffusive Combustion Systems on $R^{n}$ | We consider the initial value problem for the thermal-diffusive combustion
systems of the form:
$u_{1,t}= Delta_{x}u_1 - u_1 u_2^m$, $u_{2,t}= d Delta_{x} u_2 + u_1 u_2^m$,
$x in R^{n}$, $n geq 1$, $m geq 1$, $d > 1$,
with bounded uniformly continuous nonnegative initial data. For such initial
data, solutions can... | 1994-12-05 | 2016-08-31 | [
"chao-dyn",
"nlin.CD"
] | P. Collet (Centre de Physique Th'eorique Laboratoire CNRS, Ecole
Polytechnique, Palaiseau, France.), J. Xin (Department of Mathematics
University of Arizona Tucson, AZ) |
chao-dyn/9412001 | Geometric and Diffractive Orbits in the Scattering from Confocal
Hyperbolae | We study the scattering resonances between two confocal hyperbolae and show
that the spectrum is dominated by the effect of a single periodic orbit. There
are two distinct cases depending on whether the orbit is geometric or
diffractive. A generalization of periodic orbit theory allows us to incorporate
the second poss... | 1994-12-02 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | N.D. Whelan (Niels Bohr Institute) |
chao-dyn/9412002 | The Construction of Zonal Models of Dispersion in Channels via Matched
Centre Manifolds | Taylor's model of dispersion simply describes the long-term spread of
material along a pipe, channel or river. However, often we need multi-mode
models to resolve finer details in space and time. Here we construct zonal
models of dispersion via the new principle of matching their long-term
evolution with that of the or... | 1994-12-02 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | S.D. Watt (University of Melbourne), A.J. Roberts (University of
Southern Queensland) |
chao-dyn/9411024 | Decay of the Sinai Well in D dimensions | We study the decay law of the Sinai Well in $D$ dimensions and relate the
behavior of the decay law to internal distributions that characterize the
dynamics of the system. We show that the long time tail of the decay is
algebraic ($1/t$), irrespective of the dimension $D$. | 1994-11-30 | 2016-08-14 | [
"chao-dyn",
"nlin.CD"
] | A.J.Fendrik and M.J.S\'anchez (Departamento de F\'isica, Facultad de
Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad
Universitaria, 1428, Buenos Aires,Argentina) |
chao-dyn/9411023 | On the Role of Non-Periodic Orbits in The Semiclassical Quantization of
the Truncated Hyperbola Billiard | Based on an accurate computation of the first 1851 quantal energy levels of
the truncated hyperbola billiard, we have found an anomalous long-range
modulation in the integrated level density. It is shown that the observed
anomaly can be explained by an additional term in Gutzwiller's trace formula.
This term is given a... | 1994-11-29 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | R. Aurich, T. Hesse, and F. Steiner (II. Institut fuer Theoretische
Physik, Universitaet Hamburg) |
chao-dyn/9411022 | Dynamical systems theory for music dynamics | We show that, when music pieces are cast in the form of time series of pitch
variations, the concepts and tools of dynamical systems theory can be applied
to the analysis of {\it temporal dynamics} in music. (i) Phase space portraits
are constructed from the time series wherefrom the dimensionality is evaluated
as a me... | 1994-11-26 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Jean Pierre Boon and Olivier Decroly (Physique Nonlin\'eaire et
M\'ecanique Statistique, Universit\'e libre de Bruxelles, Bruxelles, Belgium) |
chao-dyn/9411021 | Initial Conditions for Models of Dynamical Systems | The long-time behaviour of many dynamical systems may be effectively
predicted by a low-dimensional model that describes the evolution of a reduced
set of variables. We consider the question of how to equip such a
low-dimensional model with appropriate initial conditions, so that it
faithfully reproduces the long-term ... | 1994-11-25 | 2015-06-24 | [
"chao-dyn",
"nlin.CD"
] | Stephen M. Cox (University of Nottingham), A. J. Roberts (University
of Southern Queensland) |
chao-dyn/9411020 | Anomalous Scaling in Kolmogorov--1941 Turbulence | We show that the Kolmogorov-1941 picture of fully developed hydrodynamic
turbulence (with the scaling of the structure functions $S_n(R) \propto
R^{n/3}$) necessarily leads to an anomalous scaling for correlation functions
which include the rate of energy dissipation $\varepsilon (t,{\bf r})$, these
correlation functio... | 1994-11-24 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | V.S L'vov and V.V Lebedev |
chao-dyn/9411019 | Uniform Semiclassical Wavepacket Propagation and Eigenstate Extraction
in a Smooth Chaotic System | A uniform semiclassical propagator is used to time evolve a wavepacket in a
smooth Hamiltonian system at energies for which the underlying classical motion
is chaotic. The propagated wavepacket is Fourier transformed to yield a scarred
eigenstate. | 1994-11-16 | 2009-10-22 | [
"chao-dyn",
"chem-ph",
"nlin.CD"
] | Daniel Provost and Paul Brumer (Chemical Physics Theory Group,
Department of Chemistry, University of Toronto, Toronto, Canada) |
chao-dyn/9411017 | Discrete Symmetries in the Weyl Expansion for Quantum Billiards | We consider two and three-dimensional quantum billiards with discrete
symmetries. We derive the first terms of the Weyl expansion for the level
density projected onto the irreducible representations of the symmetry group.
As an illustration the method is applied to the icosahedral billiard. The paper
was published in J... | 1994-11-15 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Nicolas Pavloff |
chao-dyn/9411016 | Periodic orbits of the integrable Swinging Atwood's Machine | Solutions in terms of Elliptic Functions are provided for SAM in the
integrable case where the mass ration equals three. My last SAM paper (I
promise). To appear in The American Journal of Physics. | 1994-11-15 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411018 | A closure model for intermittency in three dimensional incompressible
turbulence | A simplified Lagrangean closure for the Navier-Stokes equation is used to
study the production of intermittency in the inertial range of three
dimensional turbulence. This is done using localized wavepackets following the
fluid rather than a standard Fourier basis. In this formulation, the equation
for the energy trans... | 1994-11-15 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Piero Olla (The James Franck Institute, The University of Chicago) |
chao-dyn/9411015 | Renormalizing Partial Differential Equations | In this review paper, we explain how to apply Renormalization Group ideas to
the analysis of the long-time asymptotics of solutions of partial differential
equations. We illustrate the method on several examples of nonlinear parabolic
equations. We discuss many applications, including the stability of profiles
and fron... | 1994-11-14 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | J.Bricmont (UCL, Physique Th\'eorique, B-1348, Louvain-la-Neuve,
Belgium) A.Kupiainen (Helsinki University, Department of Mathematics,
Helsinki 00014, Finland) |
chao-dyn/9411013 | Extension of ``Renormalization of period doubling in symmetric
volume-preserving maps'' | We numerically reexamine the scaling behavior of period doublings in
four-dimensional volume-preserving maps in order to resolve a discrepancy
between numerical results on scaling of the coupling parameter and the
approximate renormalization results reported by Mao and Greene [Phys. Rev. A
{\bf 35}, 3911 (1987)]. In or... | 1994-11-14 | 2009-10-22 | [
"chao-dyn",
"cond-mat",
"nlin.CD"
] | Sang-Yoon Kim (Dept. of Phys., Kangwon Nat'l Univ., Chunchon
Kangwon-Do 200-701, Korea) |
chao-dyn/9411014 | Equations for Turbulent Flood Waves | Long waves in rivers, estuaries and floods are described by the St Venant and
Boussinesq equations in classical fluid dynamics. Based on the widely used
$k$-$\epsilon$ model for turbulence, we use the techniques of centre manifold
theory to show how these classical models can be derived from a unified
approach to low-d... | 1994-11-14 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Z. MEI (University of Marburg), A.J. ROBERTS (University of Southern
Queensland) |
chao-dyn/9411010 | The effects of additive noise and drift in the dynamics of the driving
on chaotic synchronization | Analysis of effects of noise and drift on chaotic synchronization. To appear
in Physics Letters. | 1994-11-12 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411011 | Synchronization of chaotic systems: the effects of additive noise and
drift in the dynamics and driving | To appear in Physical Review E. Contains some analysis of experimental
(mechanical) string data. | 1994-11-12 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411012 | Topological time series analysis of a string experiment and its
synchronized model | Template and prunning front are calculated for an experimental chaotic time
series from a mechanical string experiment. An empirical synchronized model is
also created for the data set. To appear in Physical Review E. | 1994-11-12 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411009 | Comment on "Bouncing ball with finite restitution ..." | Some misleading statements in a recent paper in PRE are corrected. | 1994-11-12 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411008 | Braid analysis of chaos | The (forced) periodic orbit spectrum is calculated for a chaotic time series
(BZ reaction). | 1994-11-12 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411007 | Braid analysis of a bouncing ball | Prunning front is calculated for a bouncing ball system and the results are
compared to a braid analysis. To Appear in Physical Review E. | 1994-11-12 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Nicholas B. Tufillaro |
chao-dyn/9411006 | Linear And Nonlinear Mechanisms Of Information Propagation | The mechanisms of information transmission are investigated in a lattice of
coupled continuous maps, by analyzing the propagation of both finite and
infinitesimal disturbances. Two distinct regimes are detected: in the former
case, both classes of perturbations spread with the same velocity; in the
latter case, finite ... | 1994-11-10 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Antonio Politi ( Istituto Nazionale di Ottica, I-50125 Firenze, Italy)
Alessandro Torcini (Dipartimento di Fisica, Universit\`a di Firenze; INFM and
GNSM - Sezione di Firenze; I.T.G. "A. Gramsci", I-50047 Prato, Italy) |
chao-dyn/9411005 | A generating partition for the standard map | A procedure to obtain the symbolic dynamics for conservative dynamical
systems is introduced with reference to the standard map in a strongly chaotic
regime. The method extends an approach previously developed for highly
dissipative systems. It is based on the construction of a generating partition
from homoclinic tang... | 1994-11-09 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Freddy Christiansen and Antonio Politi, Istituto Nazionale di Ottica,
Firenze, Italy |
chao-dyn/9411004 | Semiquantum Chaos and the Large N Expansion | We consider the dynamical system consisting of a quantum degree of freedom
$A$ interacting with $N$ quantum oscillators described by the Lagrangian \bq L
= {1\over 2}\dot{A}^2 + \sum_{i=1}^{N} \left\{{1\over 2}\dot{x}_i^2 - {1\over
2}( m^2 + e^2 A^2)x_i^2 \right\}. \eq In the limit $N \rightarrow \infty$, with
$e^2 N$ ... | 1994-11-08 | 2015-06-24 | [
"chao-dyn",
"nlin.CD"
] | Fred Cooper, John Dawson, Salman Habib, Yuval Kluger, Dawn Meredith,
and Harvey Shepard |
chao-dyn/9411002 | Critical behavior of period doubling in coupled area-preserving maps | We study the critical behavior of period doublings in $N$ symmetrically
coupled area-preserving maps for many-coupled cases with $N>3$. It is found
that the critical scaling behaviors depend on the range of coupling
interaction. In the extreme long-range case of global coupling, in which each
area-preserving map is cou... | 1994-11-06 | 2009-10-22 | [
"chao-dyn",
"cond-mat",
"nlin.CD"
] | Sang-Yoon Kim (Dept. of Phys., Kangwon Nat'l Univ., Chunchon
Kangwon-Do 200-701, Korea) |
chao-dyn/9411003 | M-furcations in coupled maps | We study the scaling behavior of $M$-furcation $(M\!=\!2, 3, 4,\dots)$
sequences of $M^n$-period $(n=1,2,\dots)$ orbits in two coupled one-dimensional
(1D) maps. Using a renormalization method, how the scaling behavior depends on
$M$ is particularly investigated in the zero-coupling case in which the two 1D
maps become... | 1994-11-06 | 2009-10-22 | [
"chao-dyn",
"cond-mat",
"nlin.CD"
] | Sang-Yoon Kim (Dept. of Phys., Kangwon Nat'l Univ., Chunchon
Kangwon-Do 200-701, Korea) |
chao-dyn/9411001 | Long-wave models of thin film fluid dynamics | Centre manifold techniques are used to derive rationally a description of the
dynamics of thin films of fluid. The derived model is based on the free-surface
$\eta(x,t)$ and the vertically averaged horizontal velocity $\avu(x,t)$. The
approach appears to converge well and has significant differences from
conventional d... | 1994-11-04 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | A.J. Roberts (University of Southern Queensland) |
chao-dyn/9410011 | Computation of Lie Transformations from a Power Series: Bounds and
Optimum Truncation | The problem considered is the computation of an infinite product
(composition) of Lie transformations generated by homogeneous polynomials of
increasing order from a given convergent power series. Bounds are computed for
the infinitesimal form of Lie transformations. The results obtained do not
guarantee convergence of... | 1994-11-03 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Ivan Gjaja (Center for Nonlinear Studies, Los Alamos National
Laboratory, Los Alamos, NM 87545) |
chao-dyn/9410010 | Bifurcations of homoclinic orbits in bimodal maps | We discuss the bifurcation structure of homoclinic orbits in bimodal one
dimensional maps. The universal structure of these bifurcations with singular
bifurcation points and the web of bifurcation lines through the parameter space
are described. The bifurcations depend on two parameters (codimension 2
bifurcations). We... | 1994-11-03 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Kai T. Hansen (University of Oslo) |
chao-dyn/9410009 | Origin of Crack Tip Instabilities | This paper demonstrates that rapid fracture of ideal brittle lattices
naturally involves phenomena long seen in experiment, but which have been hard
to understand from a continuum point of view. These idealized models do not
mimic realistic microstructure, but can be solved exactly and understood
completely. First it i... | 1994-11-02 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Michael Marder and Steve Gross |
chao-dyn/9410007 | Dynamical Ensembles in Nonequilibrium Statistical Mechanics | Ruelle's principle for turbulence leading to what is usually called the
Sinai-Ruelle-Bowen distribution (SRB) is applied to the statistical mechanics
of many particle systems in nonequilibrium stationary states. A specific
prediction, obtained without the need to construct explicitly the SRB itself,
is shown to be in a... | 1994-10-30 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | G. Gallavotti, E.G.D.Cohen |
chao-dyn/9410008 | Topics in chaotic dynamics | Various kinematical quantities associated with the statistical properties of
dynamical systems are examined: statistics of the motion, dynamical bases and
Lyapunov exponents. Markov partitons for chaotic systems, without any attempt
at describing ``optimal results''. The Ruelle principle is illustrated via its
relation... | 1994-10-30 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | G. Gallavotti |
chao-dyn/9410006 | The Breakdown of Dynamic Scaling and Intermittency in a Cascade Model of
Turbulence | We present an analytic and numerical analysis of the Gledzer-Ohkitani-Yamada
(GOY) cascade model for turbulence. We concentrate on the dynamic correlations,
and demonstrate both numerically and analytically, using resummed perturbation
theory, that the correlations do not follow a dynamic scaling ansatz. The basic
reas... | 1994-10-25 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Omri Gat(1), Itamar Procaccia(1), Reuven Zeitak(1) ((1) Department of
Chemical Physics, The Weizmann Institute of Science, 76100 Rehovot, Israel) |
chao-dyn/9410005 | Passive Scalars and Three-Dimensional Liouvillian Maps | Global aspects of the motion of passive scalars in time-dependent
incompressible fluid flows are well described by volume-preserving
(Liouvillian) three-dimensional maps. In this paper the possible invariant
structures in Liouvillian maps and the two most interesting nearly-integrable
cases are investigated. In additio... | 1994-10-21 | 2012-08-02 | [
"chao-dyn",
"math.DS",
"nlin.CD",
"physics.flu-dyn"
] | Julyan H. E. Cartwright, Mario Feingold, and Oreste Piro |
chao-dyn/9410004 | Kinks Dynamics in One-Dimensional Coupled Map Lattices | We examine the problem of the dynamics of interfaces in a one-dimensional
space-time discrete dynamical system. Two different regimes are studied : the
non-propagating and the propagating one. In the first case, after proving the
existence of such solutions, we show how they can be described using Taylor
expansions. Th... | 1994-10-20 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | B. Fernandez |
chao-dyn/9410002 | "Intermittency" in Hydrodynamic Turbulence as Intermediate Asymptotic to
Kolmogorov41 Scaling | A synopsis of an analytical theory of scaling in developed turbulence is
proposed on the basis of the Navier-Stokes equations. It is shown that
corrections to the normal Kolmogorov 1941 scaling behavior of the $n$-th order
velocity structure functions are finite Re effects which disappear when the
inertial interval exc... | 1994-10-20 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | V.S L'vov and I. Procaccia |
chao-dyn/9410003 | Anomalous Scaling and Fusion Rules in Hydrodynamic Turbulence | It is shown that statistical properties of developed hydrodynamic turbulence
are characterized by an infinite set of independent anomalous exponents which
describes the scaling behavior of hydrodynamic fields constructed from the
second and larger powers of the velocity derivatives. A physical mechanism
responsible for... | 1994-10-20 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Vladimir V. Lebedev and Victor S. L'vov |
chao-dyn/9410001 | Dynamics of Small Autocatalytic Reaction Network II: Replication,
Mutation and Catalysis | Mutation is introduced into autocatalytic reaction networks. Examples of low
dimensional dynamical systems --- n = 2, 3 and 4 --- are discussed and complete
qualitative analysis is presented. Error thresholds known from simple
replication-mutation kinetics with frequency independent replication rates
occur here as well... | 1994-10-14 | 2008-02-03 | [
"chao-dyn",
"nlin.CD"
] | Peter F. Stadler (ITC, SFI), Wolfgang Schnabl (ITC, Alcatel Austria),
Christian V. Forst (IMB), and Peter Schuster (ITC, SFI, IMB) (ITC: Inst. of
Theoretical Chemistry, Univ. Vienna, Austria; SFI: Santa Fe Inst., New Mexico
IMB: Inst. of Molecuar Biotechnology, Jena, Germany) |
chao-dyn/9409007 | Amplitude Equations for Electrostatic Waves: universal singular behavior
in the limit of weak instability | An amplitude equation for an unstable mode in a collisionless plasma is
derived from the dynamics on the unstable manifold of the equilibrium
$F_0(v)$.\\ The mode eigenvalue arises from a simple zero of the dielectric
$\epsilon_{{k}}(z)$; as the linear growth rate $\gamma$ vanishes, the
eigenvalue merges with the conti... | 1994-10-05 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | John David Crawford (Department of Physics and Astronomy, University
of Pittsburgh, Pittsburgh, PA) |
chao-dyn/9409006 | Avalanches in the Weakly Driven Frenkel-Kontorova Model | A damped chain of particles with harmonic nearest-neighbor interactions in a
spatially periodic, piecewise harmonic potential (Frenkel-Kontorova model) is
studied numerically. One end of the chain is pulled slowly which acts as a weak
driving mechanism. The numerical study was performed in the limit of infinitely
weak ... | 1994-09-29 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Franz-Josef Elmer (Institut f\"ur Physik, Universit\"at Basel, CH-4056
Basel, Switzerland) |
chao-dyn/9409005 | A New Type of Irregular Motion in a Class of Game Dynamics Systems | A new type of asymptotic behavior in a game dynamics system is discovered.
The system exhibits behavior which combines chaotic motion and attraction to
heteroclinic cycles; the trajectory visits several unstable stationary states
repeatedly with an irregular order, and the typical length of the stay near the
steady sta... | 1994-09-17 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Tsuyoshi Chawanya (Yukawa Institute for Theoretical Physics, Kyoto
606, Japan) |
chao-dyn/9409004 | Statistical Properties of the Zeros of Zeta Functions - Beyond the
Riemann Case | We investigate the statistical distribution of the zeros of Dirichlet
$L$--functions both analytically and numerically. Using the Hardy--Littlewood
conjecture about the distribution of prime numbers we show that the two--point
correlation function of these zeros coincides with that for eigenvalues of the
Gaussian unita... | 1994-09-16 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | E. Bogomolny and P. Leboeuf |
chao-dyn/9409003 | Gaussian Wavepacket Dynamics: semiquantal and semiclassical phase space
formalism | Gaussian wavepackets are a popular tool for semiclassical analyses of
classically chaotic systems. We demonstrate that they are extremely powerful in
the semiquantal analysis of such systems, too, where their dynamics can be
recast in an extended potential formulation. We develop Gaussian semiquantal
dynamics to provid... | 1994-09-14 | 2009-10-22 | [
"chao-dyn",
"nlin.CD"
] | Arjendu K. Pattanayak and William C. Schieve ( Prigogine Center, The
University of Texas at Austin, TX 78712) |
chao-dyn/9409002 | The Bianchi Ix (MIXMASTER) Cosmological Model is Not Integrable | The perturbation of an exact solution exhibits a movable transcendental
essential singularity, thus proving the nonintegrability. Then, all possible
exact particular solutions which may be written in closed form are isolated
with the perturbative Painlev\'e test; this proves the inexistence of any
vacuum solution other... | 1994-09-13 | 2015-06-24 | [
"chao-dyn",
"nlin.CD"
] | A. Latifi (Universit\'e libre de Bruxelles), M. Musette (Vrije
Universiteit Brussel) and R. Conte (CEA, Centre d'\'etudes de Saclay) |
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