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chao-dyn/9311010
Classical and Quantum Chaos from Continuous Quantum Measurements
The method of restricted path integrals allows one to effectively consider continuous (prolonged in time) measurements of quantum systems. Monitoring of the system coordinates is such a continuous measurement that allows one to describe a quantum system in terms of trajectories. This approach is applied to chaotic syst...
1993-11-25
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Michael Mensky (P.N.Lebedev Institute, 117924 Moscow, Russia)
chao-dyn/9311008
Relevance of Dynamic Clustering to Biological Networks
Network of nonlinear dynamical elements often show clustering of synchronization by chaotic instability. Relevance of the clustering to ecological, immune, neural, and cellular networks is discussed, with the emphasis of partially ordered states with chaotic itinerancy. First, clustering with bit structures in a hyperc...
1993-11-25
2009-10-22
[ "chao-dyn", "nlin.CD", "q-bio" ]
Kunihiko Kaneko (University of Tokyo, Komaba)
chao-dyn/9311009
Peeling the Onion of Order and Chaos in a High-dimensional Hamiltonian System
Coexistence of various ordered chaotic states in a Hamiltonian system is studied with the use of a symplectic coupled map lattice. Besides the clustered states for the attractive interaction, a novel chaotic ordered state is found for a system with repulsive interaction, characterized by a dispersed state of particles....
1993-11-25
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Kunihiko KANEKO (University of Tokyo, Komaba), Tetsuro KONISHI ( Nagoya University)
chao-dyn/9311006
Hamiltonian Maps and Transport in Structured Fluids
Structures such as waves, jets, and vortices have a dramatic impact on the transport properties of a flow. Passive tracer transport in incompressible two-dimensional flows is described by Hamiltonian dynamics, and, for idealized structures, the system is typically integrable. When such structures are perturbed, chaotic...
1993-11-20
2009-10-22
[ "chao-dyn", "nlin.CD", "nlin.PS", "patt-sol" ]
Jeffrey B. Weiss (National Center for Atmospheric Research)
chao-dyn/9311005
Probability distributions for one component equations with multiplicative noise
Systems described by equations involving both multiplicative and additive noise are common in nature. Examples include convection of a passive scalar field, polymersin turbulent flow, and noise in dye lasers. In this paper the one component version of this problem is studied. The steady state probability distribution i...
1993-11-20
2009-10-22
[ "chao-dyn", "cond-mat", "nlin.CD" ]
J.M. Deutsch ( University of California Santa Cruz)
chao-dyn/9311007
Probability distributions for multicomponent systems with multiplicative noise
Linear systems with many degrees of freedom containing multiplicative and additive noise are considered. The steady state probability distribution for equations of this kind is examined. With multiplicative white noise it is shown that under some symmetry conditions, the probability distribution of a single component h...
1993-11-20
2009-10-22
[ "chao-dyn", "cond-mat", "nlin.CD" ]
J.M. Deutsch (University of California, Santa Cruz)
chao-dyn/9311004
An Entire Spectral Determinant for Semiclassical Quantization
We show that the eigenvalues of the first order partial differential equation derived by quasi-classical approximation of the Schr\"odinger equation can be computed from the trace of a classical operator. The derived trace formula is different from the Gutzwiller trace formula.
1993-11-19
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Gabor Vattay (Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen \O, Denmark and E\"otv\"os University, M\'uzeum krt. 6 - 8, H-1088 Budapest, Hungary)
chao-dyn/9311003
Correspondence in Quasiperiodic and Chaotic Maps: Quantization via the von Neumann Equation
A generalized approach to the quantization of a large class of maps on a torus, i.e. quantization via the von Neumann Equation, is described and a number of issues related to the quantization of model systems are discussed. The approach yields well behaved mixed quantum states for tori for which the corresponding Schro...
1993-11-16
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Joshua Wilkie and Paul Brumer (Chemical Physics Theory Group, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada)
chao-dyn/9311002
Spatial Variation of Correlation Times for 1D Phase Turbulence
For one-dimensional phase-turbulent solutions of the Kuramoto-Sivashinsky equation with rigid boundary conditions, we show that there is a substantial variation of the correlation time~$\tau_c(x)$ with spatial position $x$ in moderately large systems of size $L$. These results suggest that some time-averaged properties...
1993-11-11
2009-10-22
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG", "nlin.PS", "patt-sol" ]
David A. Egolf (Department of Physics and Center for Nonlinear and Complex Systems, Duke University) and Henry S. Greenside (Departments of Physics and Computer Science and Center for Nonlinear and Complex Systems, Duke University)
chao-dyn/9311001
Characteristic Representation of Elementary Cellular Automata
We propose a characteristic representation ofone-dimensional and 2-state, 3-neighbor cellular automaton rules, which describes an effective form of each rule after many time steps. Simulated results of the representation show that complex structures of Class IV rules come from their aspects of Class II and III. Class I...
1993-11-06
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Y. Kayama, H. Anada and Y. Imamura, 9 pages (No figures and tables)
chao-dyn/9310006
Tunneling And The Onset Of Chaos In A Driven Bistable System
We study the interplay between coherent transport by tunneling and diffusive transport through classically chaotic phase-space regions, as it is reflected in the Floquet spectrum of the periodically driven quartic double well. The tunnel splittings in the semiclassical regime are determined with high numerical accuracy...
1993-10-28
2009-10-22
[ "chao-dyn", "nlin.CD" ]
R. Utermann, T. Dittrich, and P. Hanggi (University of Augsburg, Institute of Physics)
chao-dyn/9310004
Chaotic, regular and unbounded behaviour in the elastic impact oscillator
A discontinuous area-preserving mapping derived from a sinusoidally-forced impacting system is studied. This system, the elastic impact oscillator, is very closely related to the accelerator models of particle physics such as the Fermi map. The discontinuity in the mapping is due to grazing which can have a surprisingl...
1993-10-27
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Harbir Lamba (School of Mathematics, University of Bristol, UK)
chao-dyn/9310005
Billiards correlation functions
We discuss various experiments on the time decay of velocity autocorrelation functions in billiards. We perform new experiments and find results which are compatible with an exponential mixing hypothesis, first put forward by [FM]: they do not seem compatible with the stretched exponentials believed, in spite of [FM], ...
1993-10-27
2008-10-08
[ "chao-dyn", "nlin.CD" ]
Garrido Pedro, Gallavotti Giovanni
chao-dyn/9310003
Truncated horseshoes and formal languages in chaotic scattering
In this paper we study parameter families of truncated horseshoes as models of multiscattering systems which show a transition to chaos without losing hyperbolicity, so that the topological features of the transition are completely describable by a parameterized family of symbolic dynamics. At a fixed parameter value t...
1993-10-22
2009-10-22
[ "chao-dyn", "adap-org", "nlin.AO", "nlin.CD" ]
G. Troll (TU Berlin, D-10623 Berlin, Germany)
chao-dyn/9310002
Non recursive proof of the KAM theorem
A selfcontained proof of the KAM theorem in the Thirring model is discussed, completely relaxing the ``strong diophantine property'' hypothesis used in previous papers. Keywords: \it KAM, invariant tori, classical mechanics, perturbation theory, chaos
1993-10-14
2008-10-08
[ "chao-dyn", "nlin.CD" ]
Giovanni Gallavotti, Guido Gentile (Universita' di Roma, La Sapienza, P.le Moro 2, 00185 Roma)
chao-dyn/9310001
Regular unimodal systems and factors of finite automata
Dynamical systems at the edge of chaos, which have been considered as models of self-organization phenomena, are marked by their ability to perform nontrivial computations. To distinguish them from systems with limited computing power, we formulate two simplicity criteria for general dynamical systems, and apply them t...
1993-10-11
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Petr Kurka
chao-dyn/9309005
Entropy and Long range correlations in literary English
Recently long range correlations were detected in nucleotide sequences and in human writings by several authors. We undertake here a systematic investigation of two books, Moby Dick by H. Melville and Grimm's tales, with respect to the existence of long range correlations. The analysis is based on the calculation of en...
1993-09-16
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Werner Ebeling, Thorsten P\"oschel
chao-dyn/9309004
Semi-Quantum Chaos
We consider a system in which a classical oscillator is interacting with a purely quantum mechanical oscillator, described by the Lagrangian $ L = \frac{1}{2} \dot{x}^2 + \frac{1}{2} \dot{A}^2 - \frac{1}{2} ( m^2 + e^2 A^2) x^2 \>, $ where $A$ is a classical variable and $x$ is a quantum operator. With $\langle x(t...
1993-09-13
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Fred Cooper (LANL & UNH), John Dawson (UNH), Dawn Meredith (UNH), and Harvey Shepard (UNH)
chao-dyn/9309002
Chaotic Pulse Trains
We study a third-order nonlinear ordinary differential equation whose solutions, under certain specific conditions, are individual pulses. These correspond to homoclinic orbits in the phase space of the equation and we study the possible pulse types in some detail. Sufficiently close to the conditions under which a hom...
1993-09-08
2008-02-03
[ "chao-dyn", "nlin.CD" ]
N.J. Balmforth (Astronomy Dept., Columbia Univ.), G.R. Ierley (Scripps Institute for Oceanography) and E.A. Spiegel (Astronomy Dept., Columbia Univ.)
chao-dyn/9309003
The Topological Entropy of One-dimensional Maps: Approximations and Bounds
We present a method for computing the topological entropy of one-dimensional maps. As an approximation scheme, the algorithm converges rapidly and provides both upper and lower bounds.
1993-09-08
2009-10-22
[ "chao-dyn", "nlin.CD" ]
N.J. Balmforth and E.A. Spiegel (Astron. Dept., Columbia Univ.), and C. Tresser (IBM, Yorktown Heights)
chao-dyn/9309001
Chaotic Transport in Planar Periodic Vortical Flows
We have studied a chaotic transport in a two-dimensional periodic vortical flow under a time-dependent perturbation with period T where the global diffusion occurs along the stochastic web. By using the Melnikov method we construct the separatrix map describing the approximate dynamics near the saddle separatrices. Foc...
1993-09-04
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Taehoon Ahn and Seunghwan Kim (Departments of Mathematics and Physics, Basic Science Research Institute, POSTECH)
chao-dyn/9308006
Rotation Axis Variation Due To Spin Orbit Resonance
Rotation axis variation due to spin orbit resonance: conference report; keywords: planetary precession, rigid body, chaos, KAM, Arnold diffusion, averaging, celestial mechanics, classical mechanics, large deviations
1993-08-22
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Giovannni Gallavotti (Dipartimento di Fisica, Universita' di Roma, P. Moro 2, 00185, Roma)
chao-dyn/9308005
Resonance spectra and a periodic orbit sum rule for bound chaotic systems
We consider the spectrum of the evolution operator for bound chaotic systems by evaluating its trace. This trace is known to approach unity as $t \rightarrow \infty$ for bound systems. It is written as the Fourier transform of the logaritmic derivative of a zeta function whose zeros are identified with the eigenvalues ...
1993-08-12
2016-08-31
[ "chao-dyn", "nlin.CD" ]
Per Dahlqvist
chao-dyn/9308002
Linear Response Theory in Stochastic Resonance
The susceptibility of an overdamped Markov system fluctuating in a bistable potential of general form is obtained by analytic solution of the Fokker-Planck equation (FPE) for low noise intensities. The results are discussed in the context of the LRT theory of stochastic resonance. They go over into recent results (Gang...
1993-08-09
2009-10-22
[ "chao-dyn", "nlin.CD" ]
MI Dykman, H Haken, Gang Hu, DG Luchinsky, R Mannella, PVE McClintock, CZ Ning, ND Stein, NG Stocks
chao-dyn/9308003
Supernarrow Spectral Peaks and High Frequency Stochastic Resonance in Systems with Coexisting Periodic Attractors
The kinetics of a periodically driven nonlinear oscillator, bistable in a nearly resonant field, has been investigated theoretically and through analogue experiments. An activation dependence of the probabilities of fluctuational transitions between the coexisting attractors has been observed, and the activation energi...
1993-08-09
2009-10-22
[ "chao-dyn", "nlin.CD" ]
MI Dykman, DG Luchinsky, R Mannella, PVE McClintock, ND Stein, NG Stocks
chao-dyn/9308001
High Frequency Stochastic Resonance in Periodically Driven Systems
High frequency stochastic resonance (SR) phenomena, associated with fluctuational transitions between coexisting periodic attractors, have been investigated experimentally in an electronic model of a single-well Duffing oscillator bistable in a nearly resonant field of frequency $\omega_F$. It is shown that, with incre...
1993-08-09
2008-02-03
[ "chao-dyn", "nlin.CD" ]
M.I. Dykman (Department of Physics, Stanford University, USA), D.G. Luchinsky (VNIIMS, Andreevskaya nab 2, 117965 Moscow, Russia), R. Mannella (Dipartimento di Fisica, Universita' di Pisa, Italy), P.V.E. McClintock (School of Physics and Material, Lancaster University, UK), S.M. Soskin (Institute of Semiconduct...
chao-dyn/9308004
A Dynamical Approach to Fractional Brownian Motion
Herein we develop a dynamical foundation for fractional Brownian Motion. A clear relation is established between the asymptotic behaviour of the correlation function and diffusion in a dynamical system. Then, assuming that scaling is applicable, we establish a connection between diffusion (either standard or anomalous)...
1993-08-09
2008-02-03
[ "chao-dyn", "nlin.CD" ]
R Mannella, P Grigolini, BJ West
chao-dyn/9307019
Prediction of Large Events on a Dynamical Model of a Fault
We present results for long term and intermediate term prediction algorithms applied to a simple mechanical model of a fault. We use long term prediction methods based, for example, on the distribution of repeat times between large events to establish a benchmark for predictability in the model. In comparison, intermed...
1993-08-03
2015-06-24
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG" ]
S. L. Pepke (Dept. of Physics, Univ. of California, Santa Barbara), J. M. Carlson (Dept. of Physics, UCSB and Institute for Theoretical Physics, UCSB), and B.E. Shaw (Dept. of Physics, UCSB and Lamont-Dougherty Earth Observatory)
chao-dyn/9307020
Non-deterministic chaos
Non-deterministic chaos is a form of low-dimensional dynamics which is characterized by the existence of a countable set of {\em sensitive decision points} (SDP's). Away from these points, the dynamics is well-behaved. Near these points, however, perturbations (e.g., thermal noise) may cause the outgoing trajectory to ...
1993-08-03
2008-02-03
[ "chao-dyn", "nlin.CD" ]
D. D. Dixon (Institute for Geophysics and Planetary Physics, University of California, Riverside)
chao-dyn/9307018
Quantum Dissipative Chaos
Using the decoherence formalism of Gell-Mann and Hartle, a quantum system is found which is the equivalent of the classical chaotic Duffing oscillator. The similarities and the differences from the classical oscillator are examined; in particular, a new concept of quantum maps is introduced, and alterations in the clas...
1993-07-31
2008-02-03
[ "chao-dyn", "gr-qc", "nlin.CD" ]
Todd A. Brun (Department of Physics, Caltech)
chao-dyn/9307017
Evolutionary Games and Computer Simulations
The prisoner's dilemma has long been considered the paradigm for studying the emergence of cooperation among selfish individuals. Because of its importance, it has been studied through computer experiments as well as in the laboratory and by analytical means. However, there are important differences between the way a s...
1993-07-30
2009-10-22
[ "chao-dyn", "adap-org", "nlin.AO", "nlin.CD" ]
Bernardo A. Huberman and Natalie S. Glance (Xerox Parc, Palo Alto, CA)
chao-dyn/9307016
Diversity and Collective Action
We elucidate the dynamics of ongoing collective action among intentional agents with diverse beliefs and imperfect information. Their decisions on whether or not to contribute to the collective good depend not only on the past but also on their expectations as to how their actions will affect those of others. We show t...
1993-07-27
2009-09-25
[ "chao-dyn", "adap-org", "nlin.AO", "nlin.CD" ]
Bernardo Huberman (Xerox PARC, Palo Alto, CA), Natalie Glance (Xerox PARC, Palo Alto, CA)
chao-dyn/9307015
Organizational Fluidity and Sustainable Cooperation
We show that fluid organizations display higher levels of cooperation than attainable by groups with either a fixed social structure or lacking one altogether. By moving within the organization, individuals cause restructurings that facilitate cooperation. Computer experiments simulating fluid organizations faced with ...
1993-07-27
2008-02-03
[ "chao-dyn", "adap-org", "nlin.AO", "nlin.CD" ]
Natalie Glance (Xerox PARC, Palo Alto, CA), Bernardo Huberman (Xerox PARC, Palo Alto, CA)
chao-dyn/9307014
A Fredholm Determinant for Semi-classical Quantization
We investigate a new type of approximation to quantum determinants, the ``\qFd", and test numerically the conjecture that for Axiom A hyperbolic flows such determinants have a larger domain of analyticity and better convergence than the \qS s derived from the \Gt. The conjecture is supported by numerical investigations...
1993-07-26
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Predrag Cvitanovi\'c, Per E. Rosenqvist, G\'abor Vattay (Niels Bohr Institute, Copenhagen, Denmark) and Hans Henrik Rugh (Unit\'e de Math\'ematiques Pures et Appliqu\'ees, Ecole Normale Sup\'erieure de Lyon, France)
chao-dyn/9307013
Transition from Poissonian to GOE level statistics in a modified Artin's billiard
One wall of Artin's billiard on the Poincar\'e half plane is replaced by a one-parameter ($c_p$) family of nongeodetic walls. A brief description of the classical phase space of this system is given. In the quantum domain, the continuousand gradual transition from the Poisson like to GOE level statistics due to the sma...
1993-07-26
2009-10-22
[ "chao-dyn", "cond-mat", "nlin.CD" ]
A. Csord\'as (Research Institute for Solid State Physics) R. Graham (Universitat Essen) P. Sz\'epfalusy (Institute of Solid State Physics, Eotvos University, and Research Institute for Solid State Physics) and G. Vattay (Institute of Solid State Physics, Eotvos University)
chao-dyn/9307012
Entire Fredholm determinants for Evaluation of Semi-classical and Thermodynamical Spectra
Proofs that Fredholm determinants of transfer operators for hyperbolic flows are entire can be extended to a large new class of multiplicative evolution operators. We construct such operators both for the Gutzwiller semi-classical quantum mechanics and for classical thermodynamic formalism, and introduce a new function...
1993-07-26
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Predrag Cvitanovi\'c and G\'abor Vattay (Niels Bohr Institute)
chao-dyn/9307011
Advection of vector fields by chaotic flows
We have introduced a new transfer operator for chaotic flows whose leading eigenvalue yields the dynamo rate of the fast kinematic dynamo and applied cycle expansion of the Fredholm determinant of the new operator to evaluation of its spectrum. The theory hs been tested on a normal form model of the vector advecting dy...
1993-07-26
2009-10-22
[ "chao-dyn", "cond-mat", "nlin.CD" ]
N.J. BALMFORTH (Astronomy Department,Columbia University), P.CVITANOVIC (Niels Bohr Institute), G.R. IERLEY (Scripps Institute of Oceanography, UCSD), E.A. SPIEGEL (Astronomy Department, Columbia) G.VATTAY (Niels Bohr Institute)
chao-dyn/9307010
Dependence of extensive chaos on the spatial correlation length (substantial revision)
We consider spatiotemporal chaotic systems for which spatial correlation functions decay substantially over a length scale xi (the spatial correlation length) that is small compared to the system size L. Numerical simulations suggest that such systems generally will be extensive, with the fractal dimension D growing in...
1993-07-22
2008-02-03
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG", "nlin.PS", "patt-sol" ]
David A. Egolf (Department of Physics and Center for Nonlinear and Complex Systems, Duke University) and Henry S. Greenside (Departments of Physics and Computer Science and Center for Nonlinear and Complex Systems, Duke University)
chao-dyn/9307009
A Genealogy for Finite Kneading Sequences of Bimodal Maps on the Interval
We generate all the finite kneading sequences of one of the two kinds of bimodal map on the interval, building each sequence uniquely from a pair of shorter ones. There is a single pair at generation 0, with members of length 1. Concomitant with this genealogy of kneading sequences is a unified genealogy of all the per...
1993-07-20
2008-02-03
[ "chao-dyn", "nlin.CD" ]
John Ringland (Math. Dept., SUNY Buffalo, Buffalo NY 14214), Charles Tresser (IBM, Yorktown Heights NY 10598)
chao-dyn/9307008
Fractal dimension crossovers in turbulent passive scalar signals
The fractal dimension $\delta_g^{(1)}$ of turbulent passive scalar signals is calculated from the fluid dynamical equation. $\delta_g^{(1)}$ depends on the scale. For small Prandtl (or Schmidt) number $Pr<10^{-2}$ one gets two ranges, $\delta_g^{(1)}=1$ for small scale r and $\delta_g^{(1)}$=5/3 for large r, both as ex...
1993-07-20
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Siegfried Grossmann and Detlef Lohse (Fachbereich Physik, Philipps-Universit"at, Renthof 6, 35032 Marburg, Germany)
chao-dyn/9307007
On Spectral Laws of 2D--Turbulence in Shell Models
We consider a class of shell models of 2D-turbulence. They conserve inertially the analogues of energy and enstrophy, two quadratic forms in the shell amplitudes. Inertially conserving two quadratic integrals leads to two spectral ranges. We study in detail the one characterized by a forward cascade of enstrophy and sp...
1993-07-19
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Peter Frick (Institute of Continuous Media Mechanics, Russian Academy of Sciences, 1, Acad. Korolyov Str., 614061, Perm, RUSSIA) Erik Aurell (Dept. of Mathematics, University of Stockholm, P.O. Box 6701, S--113 85 Stockholm, SWEDEN)
chao-dyn/9307006
Stochastic Resonance
Stochastic resonance (SR) - a counter-intuitive phenomenon in which the signal due to a weak periodic force in a nonlinear system can be {\it enhanced} by the addition of external noise - is reviewed. A theoretical approach based on linear response theory (LRT) is described. It is pointed out that, although the LRT the...
1993-07-17
2008-02-03
[ "chao-dyn", "nlin.CD" ]
M.I. Dykman (Department of Physics, Stanford University, USA), D.G. Luchinsky (VNIIMS, Andreevskaya nab 2, 117965 Moscow, Russia), R. Mannella (Dipartimento di Fisica, Universita' di Pisa, Italy), P.V.E. McClintock (School of Physics and Material, Lancaster University, UK), S.M. Soskin (Institute of Semiconduct...
chao-dyn/9307005
On the Quantum Cat and Sawtooth Maps- Return to Generic Behaviour
The quantization of the continous cat maps on the torus has led to rather pathological quantum objects [6]. The non-generic behaviour of this model has led some to conclude that the Correspondence Principle fails in this case [2]. In this note we introduce the quantum sawtooth models, since this is the natural family t...
1993-07-12
2008-02-03
[ "chao-dyn", "nlin.CD" ]
A. Lakshminarayan (Dept. of Physics, S.U.N.Y at Stony Brook), N.L. Balazs (Dept. of Physics, S.U.N.Y at Stony Brook)
chao-dyn/9307004
The Classical and Quantum Mechanics of Lazy Baker Maps
We introduce and study the classical and quantum mechanics of certain non hyperbolic maps on the unit square. These maps are modifications of the usual baker's map and their behaviour ranges from chaotic motion on the whole measure to chaos on a set of measure zero. Thus we have called these maps ``lazy baker maps.'' T...
1993-07-12
2009-10-22
[ "chao-dyn", "nlin.CD" ]
A. Lakshminarayan (Dept. of Physics, S.U.N.Y at Stony Brook), N.L. Balazs (Dept. of Physics, S.U.N.Y at Stony Brook)
chao-dyn/9307003
Relaxation and Localization in Interacting Quantum Maps
We quantise and study several versions of finite multibaker maps. Classically these are exactly solvable K-systems with known exponential decay to global equilibrium. This is an attempt to construct simple models of relaxation in quantum systems. The effect of symmetries and localization on quantum transport is discuss...
1993-07-11
2009-10-22
[ "chao-dyn", "nlin.CD" ]
A. Lakshminarayan (Dept. of Physics S.U.N.Y at Stony Brook) N.L. Balazs (Dept. of Physics, S.U.N.Y at Stony Brook)
chao-dyn/9307002
Scale resolved intermittency in turbulence
The deviations $\delta\zeta_m$ ("intermittency corrections") from classical ("K41") scaling $\zeta_m=m/3$ of the $m^{th}$ moments of the velocity differences in high Reynolds number turbulence are calculated, extending a method to approximately solve the Navier-Stokes equation described earlier. We suggest to introduce...
1993-07-09
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Siegfried Grossmann and Detlef Lohse (Fachbereich Physik, Philipps-Universit"at, Renthof 6, 35032 Marburg, Germany)
chao-dyn/9307001
Dynamical zeta functions for Artin's billiard and the Venkov--Zograf factorization formula
Dynamical zeta functions are expected to relate the Schr\"odinger operator's spectrum to the periodic orbits of the corresponding fully chaotic Hamiltonian system. The relationsship is exact in the case of surfaces of constant negative curvature. The recently found factorisation of the Selberg zeta function for the mod...
1993-07-02
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Michael Eisele (IFF, KFA, D-52405 J\"ulich, Germany), Dieter Mayer (Institute of Theoretical Physics, Technical University, D-W-3392 Clausthal-Zellerfeld, Germany)
chao-dyn/9306012
Stable Non-Gaussian Diffusive Profiles
We prove two stability results for the scale invariant solutions of the nonlinear heat equation $\partial_t u=\Delta u - |u|^{p-1}u$ with $1<p<1+{2\over n}$, $n$ being the spatial dimension. The first result is that a small perturbation of a scale invariant solution vanishes as $t\rightarrow\infty$. The second result i...
1993-06-28
2008-02-03
[ "chao-dyn", "cond-mat", "nlin.CD" ]
J.Bricmont (UCL, Physique Th\'eorique, Louvain-la-Neuve, Belgium) A.Kupiainen (Helsinki University, Mathematics Department, Helsinki, Finland)
chao-dyn/9306011
Self-Preservation of Large-Scale Structures in Burgers' Turbulence
We investigate the stability of large-scale structures in Burgers' equation under the perturbation of high wave-number noise in the initial conditions. Analytical estimates are obtained for random initial data with spatial spectral density k^n, n < 1. Numerical investigations are performed for the case n=0, using a par...
1993-06-26
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Erik Aurell (Dept. of Mathematics, University of Stockholm, SWEDEN and Center for Parallel Computers, Royal Institute of Technology, Stockholm, Sweden), Sergey N. Gurbatov (Radiophysical Department, University of Nizhny Novgorod, Russia and Department of Mechanics, Royal Institute of Technology, Stockholm, Swed...
chao-dyn/9306010
Using Horseshoes to Create Coherent Structures
In this letter, we show that coherent structures are related to folds of horseshoes which are present in chaotic systems. We develop techniques that allow us to construct coherent structures by manipulating folds in three prototypical problems: a 1-D chaotic map, a 2-D chaotic map, and a chaotically advected fluid. The...
1993-06-24
2008-02-03
[ "chao-dyn", "nlin.CD", "nlin.PS", "patt-sol" ]
Troy Shinbrot and J.M. Ottino (Laboratory for Fluid Mechanics, Chaos and Mixing, Dept. of Chemical Engineering, Northwestern University)
chao-dyn/9306008
Renormalization Group and Asymptotics of Solutions of Nonlinear Parabolic Equations
We present a general method for studying long time asymptotics of nonlinear parabolic partial differential equations. The method does not rely on a priori estimates such as the maximum principle. It applies to systems of coupled equations, to boundary conditions at infinity creating a front, and to higher (possibly fra...
1993-06-21
2008-02-03
[ "chao-dyn", "nlin.CD" ]
J.Bricmont (UCL, Physique Theorique, Louvain-la-Neuve, Belgium), A.Kupiainen ( Helsinki University, Mathematics Department, Helsinki, Finland), G.Lin ( Rutgers University, Mathematics Department, New Brunswick, NJ, USA)
chao-dyn/9306007
Universality in Blow-Up for Nonlinear Heat Equations
We consider the classical problem of the blowing-up of solutions of the nonlinear heat equation. We show that there exist infinitely many profiles around the blow-up point, and for each integer $k$, we construct a set of codimension $2k$ in the space of initial data giving rise to solutions that blow-up according to th...
1993-06-21
2009-10-22
[ "chao-dyn", "cond-mat", "nlin.CD" ]
J.Bricmont (UCL, Physique Theorique, Louvain-la-Neuve, Belgium), A.Kupiainen (Helsinki University, Mathematics Department, Helsinki, Finland)
chao-dyn/9306009
Stability of Moving Fronts in the Ginzburg-Landau Equation
We use Renormalization Group ideas to study stability of moving fronts in the Ginzburg-Landau equation in one spatial dimension. In particular, we prove stability of the real fronts under complex perturbations. This extends the results of Aronson and Weinberger to situations where the maximum principle is inapplicable ...
1993-06-21
2009-10-22
[ "chao-dyn", "nlin.CD" ]
J.Bricmont (UCL, Physique Theorique, Louvain-la-Neuve, Belgium), A.Kupiainen (Helsinki University, Mathematics Department, Helsinki, Finland)
chao-dyn/9306006
Interaction of surface waves with vorticity in shallow water
Vortical flows in shallow water interact with long surface waves by virtue of the nonlinear terms of the fluid equations. Analytical formulae are derived that quantify the spontaneous generation of such waves by unsteady vorticity as well as the scattering of surface waves by vorticity. In a first Born approximation th...
1993-06-18
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Enrique cerda and Fernando Lund (Departamento de Fisica, Facultad de Ciencias Fisicas y Matematicas, Universidad de Chile, Casilla 487-3, Santiago, Chile)
chao-dyn/9306005
Stochastic chaos: An analog of quantum chaos
Some intriging connections between the properties of nonlinear noise driven systems and the nonlinear dynamics of a particular set of Hamilton's equation are discussed. A large class of Fokker-Planck Equations, like the Schr\"odinger equation, can exhibit a transition in their spectral statistics as a coupling paramete...
1993-06-10
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Mark M. Millonas (Center for Nonlinear Studies and Theoretical Division, LANL and Santa Fe Institute)
chao-dyn/9306003
Twistless KAM tori
A selfcontained proof of the KAM theorem in the Thirring model is discussed.
1993-06-09
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Giovanni Gallavotti
chao-dyn/9306004
Synchronization of coupled maps and stable, dissipative windows
Synchronization among globally coupled, chaotic map lattices can be related to stable periodic windows in isolated chaotic maps. This relation provides a simple predictive tool for the understanding of complicated behavior in coupled physical, chemical and biological systems.
1993-06-09
2009-10-22
[ "chao-dyn", "adap-org", "nlin.AO", "nlin.CD" ]
Troy Shinbrot (Laboratory for Fluid Mechanics, Chaos & Mixing; Dept. of Chemical Engineering, Northwestern University)
chao-dyn/9306002
Exhibiting Randomness in Arithmetic using Mathematica and C
In my book "Algorithmic Information Theory" I explain how I constructed a million-character equation that proves that there is randomness in arithmetic. My book only includes a few pages from the monster equation, and omits the software used to construct it. This software has now been rewritten in Mathematica. The Math...
1993-06-08
2008-02-03
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG" ]
G J Chaitin (IBM Research Division)
chao-dyn/9306001
Chaotic System on the Super Riemann Surface
A chaotic system of a nonrelativistic superparticle moving freely on the super Riemann surface (SRS) of genus $g \geq 2$ is reviewed.
1993-06-04
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Shuji MATSUMOTO (KEK, Japan), Shozo UEHARA (Yukawa Inst.,Japan), and Yukinori YASUI (Osaka City U., JAPAN)
chao-dyn/9305011
Threshold Analysis for the Inverse ac Josephson Effect
The inverse ac Josephson effect involves rf-induced (Shapiro) steps that cross over the zero-current axis; the phenomenon is of interest in voltage standard applications. The standard analysis of the step height in current, which yields the well-known Bessel-function dependence on an effective ac drive amplitude, is va...
1993-05-28
2009-10-22
[ "chao-dyn", "nlin.CD" ]
G. Filatrella (Phys. Inst., Univ. Tuebingen), B. A. Malomed (Dept. Appl. Math., Tel Aviv Univ.), R. D. Parmentier (Dept. Phys., Univ. Salerno)
chao-dyn/9305009
Large Fluctuations in Stochastically Perturbed Nonlinear Systems: Applications in Computing
This is the transcript of a talk given at the 1992 Complex Systems Summer School. The theory of large fluctuations of stochastically perturbed continuous-time dynamical systems is reviewed, and the large fluctuations of two stochastic models arising in computer science are analysed. One is a stochastic model of a commu...
1993-05-28
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Robert S. Maier (University of Arizona)
chao-dyn/9305010
The Effect of Focusing and Caustics on Exit Phenomena in Systems Lacking Detailed Balance
We study the trajectories followed by a particle subjected to weak noise when escaping from the domain of attraction of a stable fixed point. If detailed balance is absent, a _focus_ may occur along the most probable exit path, leading to a breakdown of symmetry (if present). The exit trajectory bifurcates, and the exi...
1993-05-28
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Robert S. Maier and Daniel L. Stein (University of Arizona)
chao-dyn/9305008
Formal Languages in Dynamical Systems
We treat here the interrelation between formal languages and those dynamical systems that can be described by cellular automata (CA). There is a well-known injective map which identifies any CA-invariant subshift with a central formal language. However, in the special case of a symbolic dynamics, i.e. where the CA is j...
1993-05-21
2008-02-03
[ "chao-dyn", "adap-org", "nlin.AO", "nlin.CD" ]
G. Troll
chao-dyn/9305007
Periodic Solutions of a System of Coupled Oscillators Near Resonance
Summary: A system of autonomous ordinary differential equations depending on a small parameter is considered such that the unperturbed system has an invariant manifold of periodic solutions that is not normally hyperbolic but is normally nondegenerate. The bifurcation function whose zeros are the bifurcation points for...
1993-05-17
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Carmen Chicone (Department of Mathematics, University of Missouri Columbia, MO 65211)
chao-dyn/9305006
The cost of compressible dynamics, time-reversibility, Maxwell's demon, and the second law
A tantalizing version of Maxwell's demon is presented which appears to operate reversibly. A container of hard core disks is separated into two chambers of equal volume by a membrane that selects which disk can penetrate depending on the disk's angle of incidence. It is shown that the second law of thermodynamics requi...
1993-05-14
2009-10-22
[ "chao-dyn", "nlin.CD" ]
P.A. Skordos (LANL B258, Los Alamos, NM 87545, and MIT, 545 Technology Square, NE43-432, Cambridge, MA 02139)
chao-dyn/9305005
Some Studies on Arithmetical Chaos in Classical and Quantum Mechanics
Several aspects of classical and quantum mechanics applied to a class of strongly chaotic systems are studied. These consist of single particles moving without external forces on surfaces of constant negative Gaussian curvature whose corresponding fundamental groups are supplied with an arithmetic structure. It is show...
1993-05-14
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Jens Bolte (Hamburg University)
chao-dyn/9305004
Poincar\'e maps of Duffing--type oscillators and their reduction to circle maps. I. Analytic results
Bifurcation diagrams and plots of Lyapunov exponents in the $r$--$\Omega$ --plane for Duffing--type oscillators $$\ddot x +2r\dot x +V'(x,\Omega t) =0$$ exhibit a regular pattern of repeating selfsimilar ``tongues'' with complex internal structure. We demonstrate here that this behaviour is easily understood qualitativ...
1993-05-13
2008-02-03
[ "chao-dyn", "nlin.CD" ]
G. Eilenberger (IFF, KFA J\"ulich, FRG) K. Schmidt (EDS Deutschland, R\"usselsheim, FRG)
chao-dyn/9305003
A Semiclassical Calculation of Scars for a Smooth Potential
Bogomolny's formula for energy-smoothed scars is applied for the first time to a non-specific, non-scalable Hamiltonian, a 2-D anharmonic oscillator. The semiclassical theory reproduces well the exact quantal results over a large spatial and energy range.
1993-05-07
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Daniel Provost and Michel Baranger
chao-dyn/9305002
Binary Tree Approach to Scaling in Unimodal Maps
Ge, Rusjan, and Zweifel (J. Stat. Phys. 59, 1265 (1990)) introduced a binary tree which represents all the periodic windows in the chaotic regime of iterated one-dimensional unimodal maps. We consider the scaling behavior in a modified tree which takes into account the self-similarity of the window structure. A non-uni...
1993-05-06
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Jukka A. Ketoja (Research Institute for Theoretical Physics, University of Helsinki, Finland) and Juhani Kurkijarvi (Institutionen for fysik, Abo Akademi, Finland)
chao-dyn/9305001
A Cayley Tree Immune Network Model with Antibody Dynamics
A Cayley tree model of idiotypic networks that includes both B cell and antibody dynamics is formulated and analyzed. As in models with B cells only, localized states exist in the network with limited numbers of activated clones surrounded by virgin or near-virgin clones. The existence and stability of these localized ...
1993-05-03
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Russell W. Anderson (Los Alamos National Laboratory), Avidan U. Neumann (Santa Fe Institute) and Alan S. Perelson (Los Alamos National Laboratory)
chao-dyn/9304012
Twistless KAM tori, quasi flat homoclinic intersections, and other cancellations in the perturbation series of certain completely integrable hamiltonian systems. A review
Rotators interacting with a pendulum via small, velocity independent, potentials are considered. If the interaction potential does not depend on the pendulum position then the pendulum and the rotators are decoupled and we study the invariant tori of the rotators system at fixed rotation numbers: we exhibit cancellatio...
1993-04-29
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Giovanni Gallavotti
chao-dyn/9304011
Explicit Lie-Poisson integration and the Euler equations
We give a wide class of Lie-Poisson systems for which explicit, Lie-Poisson integrators, preserving all Casimirs, can be constructed. The integrators are extremely simple. Examples are the rigid body, a moment truncation, and a new, fast algorithm for the sine-bracket truncation of the 2D Euler equations.
1993-04-28
2009-10-22
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG" ]
Robert I. McLachlan (Program in Applied Math, University of Colorado at Boulder)
chao-dyn/9304010
Dynamical Systems: Some Computational Problems
We present several topics involving the computation of dynamical systems. The emphasis is on work in progress and the presentation is informal -- there are many technical details which are not fully discussed. The topics are chosen to demonstrate the various interactions between numerical computation and mathematical t...
1993-04-27
2008-02-03
[ "chao-dyn", "nlin.CD" ]
John Guckenheimer and Patrick Worfolk (Center for Applied Mathematics, Cornell University)
chao-dyn/9304009
A Dynamical Simulation Facility for Hybrid Systems
This paper establishes a general framework for describing hybrid dynamical systems which is particularly suitable for numerical simulation. In this context, the data structures used to describe the sets and functions which comprise the dynamical system are crucial since they provide the link between a natural mathemati...
1993-04-21
2008-02-03
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG" ]
Allen Back (Cornell University), John Guckenheimer (Cornell University), and Mark Myers (Cornell University)
chao-dyn/9304008
Braid analysis of (low-dimensional) chaos
Braid theory is used to calcualte the topological entropy of data from the belousov-Zhabotinskii reaction, the results agree well with one-dimensional theory to the order of approximation considered.
1993-04-20
2008-02-03
[ "chao-dyn", "comp-gas", "nlin.CD", "nlin.CG" ]
N. Tufillaro, CNLS & T-13, Lanl
chao-dyn/9304006
Modifying the onset of homoclinic chaos. Application to a bistable potential
We analyze, by means of Melnikov method, the possibility of modifying the threshold of homoclinic chaos in general 1-dimensional problems, by introducing small periodic resonant modulations. We indicate in particular a prescription in order to increase the threshold (i.e. to prevent chaos), and consider then its applic...
1993-04-16
2009-10-22
[ "chao-dyn", "nlin.CD" ]
G. Cicogna and L. Fronzoni (Pisa, Italy)
chao-dyn/9304007
One-dimensional dynamics and factors of finite automata
We argue that simple dynamical systems are factors of finite automata, regarded as dynamical systems on discontinuum. We show that any homeomorphism of the real interval is of this class. An orientation preserving homeomorphism of the circle is a factor of a finite automaton iff its rotation number is rational. Any $S$...
1993-04-16
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Petr Kurka (Charles University, Prague)
chao-dyn/9304004
Inertial Forms of Navier-Stokes Equations on Sphere
The Navier--Stokes equations for incompressible flows past a two--dimensional sphere are considered in this article. The existence of an inertial form of the equations is established. Furthermore for the first time for fluid equations, we derive an upper bound on the dimension of the differential system (inertial manif...
1993-04-14
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Roger Temam (The Institute for Applied Mathematics & Scientific Computing,Indiana University, Bloomington, IN and Laboratoire d'Analyse Num\'erique, Universit\'e Paris-Sud, Batiment 425, 91405 Orsay, France), Shouhong Wang (The Institute for Applied Mathematics & Scientific Computing,Indiana University, Bloomin...
chao-dyn/9304005
Dissipation Induced Instabilities
The main goal of this paper is to prove that if the energy-momentum (or energy-Casimir) method predicts formal instability of a relative equilibrium in a Hamiltonian system with symmetry, then with the addition of dissipation, the relative equilibrium becomes spectrally and hence linearly and nonlinearly unstable. The ...
1993-04-14
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Anthony Bloch (Department of Mathematics, Ohio State University) P.S.Krishnaprasad (Department of Electrical Engineering and Institute for Systems Research, University of Maryland) and Jerrold E. Marsden (Department of Mathematics, University of California, Berkeley) Tudor S. Ratiu (Department of Mathematics, U...
chao-dyn/9304003
A New Determinant for Quantum Chaos
We propose a new type of approximation to quantum determinants, ``quantum Fredholm determinant", and conjecture that, compared to the quantum Selberg zeta functions derived from Gutzwiller semiclassical trace formulas, such determinants have a larger domain of analyticity for Axiom A hyperbolic systems. The conjecture ...
1993-04-12
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Predrag Cvitanovi\'c and Per E. Rosenqvist (Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen)
chao-dyn/9304002
Randomness in Arithmetic and The Decline and Fall of Reductionism in Pure Mathematics
Lecture given Thursday 22 October 1992 at a Mathematics-Computer Science Colloquium at the University of New Mexico. The lecture was videotaped; this is an edited transcript.
1993-04-07
2008-02-03
[ "chao-dyn", "nlin.CD" ]
G. J. Chaitin (IBM Research Division)
chao-dyn/9304001
Chaos in the one-dimensional gravitational three-body problem
We have investigated the appearance of chaos in the 1-dimensional Newtonian gravitational three-body system (three masses on a line with $-1/r$ pairwise potential). We have concentrated in particular on how the behavior changes when the relative masses of the three bodies change (with negative total energy). For two ma...
1993-04-05
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Jarmo Hietarinta and Seppo Mikkola (Department of Physics, University of Turku, Turku, Finland)
chao-dyn/9303018
Non-ergodicity for C^1 Expanding Maps
In this paper, we consider the question of existence and uniqueness of absolutely continuous invariant measures for expanding $C^1$ maps of the circle. This is a question which arises naturally from results which are known in the case of expanding $C^k$ maps of the circle where $k\geq 2$, or even $C^{1+\epsilon}$ expan...
1993-03-31
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Anthony N. Quas (University of Warwick, U.K.)
chao-dyn/9303017
The Escape Problem for Irreversible Systems
The problem of noise-induced escape from a metastable state arises in physics, chemistry, biology, systems engineering, and other areas. The problem is well understood when the underlying dynamics of the system obey detailed balance. When this assumption fails many of the results of classical transition-rate theory no ...
1993-03-31
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Robert S. Maier (U. Arizona) and D. L. Stein (U. Arizona)
chao-dyn/9403003
Dynamical Systems Accepting the Normal Shift
Classical Bianchi-Lie, Backlund and Darboux transformations are considered. Their generalizations for the dynamical systems are discussed. For the transformation being the generalization of the normal shift the special class of dynamical systems is defined. The effective criterion for separating such systems in form of...
1993-03-28
2008-02-03
[ "chao-dyn", "alg-geom", "astro-ph", "hep-th", "math.AG", "nlin.CD" ]
A. Yu. Boldin and R. A. Sharipov (Department of Mathematics, Bashkir State University, Ufa, Russia)
chao-dyn/9303016
Symmetry Decomposition of Chaotic Dynamics
Discrete symmetries of dynamical flows give rise to relations between periodic orbits, reduce the dynamics to a fundamental domain, and lead to factorizations of zeta functions. These factorizations in turn reduce the labor and improve the convergence of cycle expansions for classical and quantum spectra associated wit...
1993-03-24
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Predrag Cvitanovi\'c and Bruno Eckhardt
chao-dyn/9303015
Periodic Orbit Theory
[[ RM: A review paper on cycle expansions. I quote the introduction: in section (2) ]] I will summarize Gutzwiller's theory for the spectrum of eigenenergies and extend it to diagonal matrix elements as well. The derivation of the associated zeta function is given (2.2) and the identification of suitable scaling variab...
1993-03-23
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Bruno Eckhardt
chao-dyn/9303014
Kramers map approach for stabilization of hydrogen atom in a magnetic field
The phenomenon of stabilization of highly excited states of hydrogen atom in a strong monochromatic field is discussed. Approximate description of dynamics by the introduced Kramers map allows to understand the main properties of this phenomenon on the basis of analogy with the Kepler map. Analogy between the stabiliza...
1993-03-23
2009-10-22
[ "chao-dyn", "nlin.CD" ]
D. L. Shepelyansky
chao-dyn/9303006
Dynamical Systems and Factors of Finite Automata
We conceive finite automata as dynamical systems on discontinuum and investigate their factors. Factors of finite automata include many well-known simple dynamical systems, e.g. hyperbolic systems and systems with finite attractors. In the quadratic family on the real interval, factors of finite automata include all sy...
1993-03-23
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Petr Kurka (Dept. of Mathematical Logic and Philosophy of Mathematics, Faculty of Mathematics and Physics, Charles University, Prague, Czechia)
chao-dyn/9503006
Field theory and KAM tori
The parametric equations of KAM tori for a quasi integrable system, are shown to be one point Schwinger functions of a suitable euclidean quantum field theory on the torus. KAM theorem is equivalent to a ultraviolet stability theorem. A renormalization group treatment of the field theory leads to a resummation of the f...
1993-03-20
2008-10-08
[ "chao-dyn", "nlin.CD" ]
G. Gallavotti (Roma1, Fisica), G. Gentile (IHES), and V. Mastropietro (Roma2, Matematica)
chao-dyn/9303005
Global Solutions of the Equations of Elastodynamics of Incompressible Neo-Hookean Materials
We prove that the initial-value problem for the motion of a certain type of elastic body has a solution for all time if the initial data are sufficiently small. The body must fill all of three space, obey a ``neo-Hookean'' stress-strain law, and be incompressible. The proof takes advantage of the delayed singularity fo...
1993-03-18
2008-02-03
[ "chao-dyn", "nlin.CD" ]
David G. Ebin, SUNY at Stony Brook, NY 11794-3651
chao-dyn/9303004
Stochastic to deterministic crossover of fractal dimension for a Langevin equation
Using algorithms of Higuchi and of Grassberger and Procaccia, we study numerically how fractal dimensions cross over from finite-dimensional Brownian noise at short time scales to finite values of deterministic chaos at longer time scales for data generated from a Langevin equation that has a strange attractor in the l...
1993-03-12
2009-10-22
[ "chao-dyn", "nlin.CD" ]
David A. Egolf (Department of Physics and Center for Nonlinear and Complex Systems, Duke University) and Henry S. Greenside (Departments of Physics and Computer Science and Center for Nonlinear and Complex Systems, Duke University)
chao-dyn/9303013
Order and chaos in quantum irregular scattering: Wigner's time delay
Recent developments in the semiclassical analysis of chaotic systems are reviewed and illustrated for Wigner's time delay in elastic scattering of a point particle from three disks in the plane. The convergence of the cycle expanded periodic orbit expression for Wigners time delay is demonstrated. Different regimes in ...
1993-03-12
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Bruno Eckhardt
chao-dyn/9303012
Resummation of classical and semiclassical periodic orbit formulas
The convergence properties of cycle expanded periodic orbit expressions for the spectra of classical and semiclassical time evolution operators have been studied for the open three disk billiard. We present evidence that both the classical and the semiclassical Selberg zeta function have poles. Applying a Pad\'{e} appr...
1993-03-11
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Bruno Eckhardt and Gunnar Russberg
chao-dyn/9303003
Flame Propagation Through Swirling Eddys, A Recursive Pattern
Computed flame motion through and between swirling eddys exhibits a maximum advancement rate which is related to the time duration of flame motion between eddys. This eddy spatial structure effect upon the apparent turbulent flame speed appears to be similar to the square-root dependence observed in wrinkled flamelet d...
1993-03-11
2008-02-03
[ "chao-dyn", "nlin.CD" ]
Wm. T. Ashurst (Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551-0969)
chao-dyn/9303011
Phase shift in experimental trajectory scaling functions
For one dimensional maps the trajectory scaling functions is invariant under coordinate transformations and can be used to compute any ergodic average. It is the most stringent test between theory and experiment, but so far it has proven difficult to extract from experimental data. It is shown that the main difficulty ...
1993-03-10
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Ronnie Mainieri and Robert E. Ecke (Center for Nonlinear Studies, Los Alamos National Laboratory)
chao-dyn/9303010
Continued-fraction expansion of eigenvalues of generalized evolution operators in terms of periodic orbits
A new expansion scheme to evaluate the eigenvalues of the generalized evolution operator (Frobenius-Perron operator) $H_{q}$ relevant to the fluctuation spectrum and poles of the order-$q$ power spectrum is proposed. The ``partition function'' is computed in terms of unstable periodic orbits and then used in a finite p...
1993-03-09
2019-08-17
[ "chao-dyn", "nlin.CD" ]
Hirokazu Fujisaka, Hideto Shigematsu, and Bruno Eckhardt
chao-dyn/9303008
S-matrix Fluctuations in a model with Classical Diffusion and Quantum Localization
The statistics of S-matrix fluctuations are numerically investigated on a model for irregular quantum scattering in which a classical chaotic diffusion takes place within the interaction region. Agreement with various random-matrix theoretic predictions is discussed in the various regimes (ballistic, diffusive, localiz...
1993-03-08
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Fausto Borgonovi and Italo Guarneri
chao-dyn/9303009
Chaotic Traveling Waves in a Coupled Map Lattice
Traveling waves triggered by a phase slip in coupled map lattices are studied. A local phase slip affects globally the system, which is in strong contrast with kink propagation. Attractors with different velocities coexist, and form quantized bands determined by the number of phase slips. The mechanism and statistical ...
1993-03-08
2009-10-22
[ "chao-dyn", "nlin.CD" ]
Kunihiko Kaneko
chao-dyn/9303002
Hypersensitivity to Perturbations in the Quantum Baker's Map
We analyze a randomly perturbed quantum version of the baker's transformation, a prototype of an area-conserving chaotic map. By numerically simulating the perturbed evolution, we estimate the information needed to follow a perturbed Hilbert-space vector in time. We find that the Landauer erasure cost associated with t...
1993-03-06
2009-10-22
[ "chao-dyn", "nlin.CD" ]
R. Schack (University of New Mexico) and C. M. Caves (Santa Fe Institute and University of New Mexico)