Physica A: Statistical Mechanics and its Applications

Items from 1 to 20 out of 18,195 results

article

Quasiscalar map for a kicked spin 12

E.S. Hernández, S.M. Gatica

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 110-117

We study the semiclassical dynamics of a spin 12 system polarized in an external magnetic field, coupled to a dissipative heat reservoir and periodically perturbed by an instantaneous rotation. We construct a quasiscalar map for a dynamical invariant of the unperturbed system and investigate its characteristics for both the Rotating Wave Approximation and the Full Coupling descriptions of the dissipative...

article

Application of a constrained-transfer-matrix method to metastability in the d = 2 Ising ferromagnet

C.C.A. Günther, P.A. Rikvold, M.A. Novotny

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 194-229

Applying a numerical transfer-matrix formalism, we obtain complex-valued constrained free energies for the two-dimensional square-lattice nearest-neighbor Ising ferromagnet below its critical temperature and in an external magnetic field. In particular, we study the imaginary part of the constrained free-energy branch that corresponds to the metastable phase. Although droplets are not introduced...

article

Collective behaviour in a cellular automaton and isotropy of the neighbourhood

F. Jiménez-Morales, J.J. Luque

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 118-122

A three dimensional deterministic cellular automata (rule 33) which exhibits a non-trivial quasiperiodic behaviour is studied. We show that the way in which the neighbours are selected causes the appearance or disappearance of that behaviour.

article

Stretching of material lines and surfaces in systems with Lagrangian chaos

S. Galluccio, A. Vulpiani

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 75-98

The problem of the stretching of material lines and surfaces in fluids described by simple Lagrangian equations is revised using methods and tools borrowed from the theory of dynamical systems. The approach allows us to show that some results, previously obtained in the theory of developed turbulence, preserve their validity if one disregards Eulerian behavior and focuses the attention merely on...

article

Microscopic vortices in classical liquids

Renat M. Yulmetyev, Ravil I. Galeev, Timur R. Yulmetyev

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 26-42

In the present article we introduce the notions about the microscopic vortices (MV) in classical liquids. The infinite exact chain of engaging kinetic equations of non-Markov type were obtained for the time correlation function (TCF) MV. For its closing and solving the so-called orthogonal dynamic variables of the first, second, third and higher levels are introduced. The consequent usage of this...

article

Solid on solid model for adsorption on self-affine substrate: a transfer matrix approach

G. Giugliarelli, A.L. Stella

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 12-25

We study a d = 2 discrete solid-on-solid model of complete wetting of a rough substrate with random self-affine boundary, having roughness exponent ζ _s . A suitable transfer matrix approach allows to discuss adsorption isotherms, as well as geometrical and thermal fluctuations of the interface. For ζ _s 12 the same wetting exponent ψ = 13 as for flat substrate is obtained for the...

article

A single-variable integral representation of the Ising model partition function

Savely Rabinovich

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 175-180

A new method to transform a partition function of the Ising model to a single-variable integral is presented. It allows to account for an interaction with next nearest neighbours and with an external magnetic field as well. The method is valid for any dimension or type of lattice. Using this approach, a mapping of the Ising model onto a symmetric function problem is obtained and demonstrated in...

article

High-frequency viscosity of a dilute polydisperse colloidal suspension

R.B. Jones

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 43-60

We consider a dilute polydisperse suspension of spherical colloidal particles and obtain an expression for the high frequency (short time) effective viscosity of the suspension. We show that the Huggins coefficient for such a suspension is sensitive to the degree and nature of the polydispersity. We present numerical calculations for hard sphere particles and for droplets to show that size polydispersity...

article

Generalized Langevin equation with chaotic force

Toshihiro Shimizu

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 61-74

The generalized Langevin equation with chaotic force is investigated:x (t) = - ∫0tdt ε(t,t )x(t ) +f (t), where ε(t,t ) = f(t)f(t ) x ² . The chaotic force f(t) is defined by f(t) = (y _n ₊ ₁ - y )τ for nτ < t ≤ (n + 1)τ (n = 0, 1, 2, ), where y _n ₊ ₁ is a chaotic sequence: y _n ₊ ₁ = F (y ...

article

Spreading of damage in the Domany-Kinzel cellular automaton: a mean-field approach

Tânia Tomé

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 99-109

We present a detailed analytical formulation and a mean-field approximation analysis of the spreading of damage in the Domany-Kinzel cellular automaton. Our results show that the system exhibits a chaotic state besides the frozen and active. These results are in agreement with recent numerical simulations. Also we study the conjugate fields associated to the order parameters of the active and chaotic...

article

Discrete Bargmann and Neumann systems and finite-dimensional integrable systems

Xianguo Geng

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 132-142

The nonlinearization approach of eigenvalue problems is equally well applied to the discrete KdV hierarchy. Two kinds of constraints between the potentials and eigenfunctions are suggested, from which the discrete Schrodinger eigenvalue problem, the spatial part of the Lax pairs of the discrete KdV hierarchy, is nonlinearized to be a discrete Bargmann system and a discrete Neumann system, while the...

article

First passage time problems and resonant behavior on a fluctuating lattice

J. Javier Brey, J. Casado-Pascual

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 123-131

We study the mean residence time of a random walker on a line segment of a lattice, which randomly switches between two states. In each of the states only motions in a one way direction are allowed. When the particle can leave the line segment through both of its ends, the residence time is a monotonous increasing function of the switching rate and does not depend on the initial state of the lattice...

article

Quantitative analysis of superconductivity in the Hg-cuprates. Comparison with the Tl ₂ -series

Laurens Jansen, Ruud Block

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 143-174

A quantitative analysis is developed for the effect of external pressure on critical temperatures in Hg(N)- and Tl ₂ (N)-superconductors with N = 1,2, and 3 CuO ₂ layers per molecular unit, and with chemical composition HgBa ₂ Ca _N _- ₁ Cu _N O ₂ _N ₊ ₂ ₊ _δ and Tl ₂ Ba ₂ Ca _N ...

article

Exact two-cell correlations in random cellular structures generated from a 2D Ising ferromagnet

R. Delannay, N. Ito, M. Khatun, G. Le Caër

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 1-11

Random 2D cellular structures are generated from distributions of spins given by a ferromagnetic Ising model with nearest-neighbour couplings on a square lattice. Topological correlations between pairs of neighbouring cells, are expressed as rational functions of even-number spin correlations, involving two, four and six spins, which are exactly known for the square Ising model. The latter correlations...

article

Translational symmetry and microscopic preparation in oscillator models of quantum dissipation

J. Sánchez Cañizares, F. Sols

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 1-2 > 181-193

It is shown that models of quantum dissipation based on interactions which are linear both in the bath and in the particle position coordinate cannot be strictly invariant under translations, even if counterterms are included. This lack of symmetry manifests itself in an unphysical dependence of the long time dynamics on the choice of initial conditions for the particle-bath interaction. By properly...

article

Spinodal decomposition of colloidal systems: the effect of hydrodynamic interactions

Jan van de Bovenkamp, Jan K.G. Dhont

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 3-4 > 239-250

On the basis of the Smoluchowski equation, the effect of hydrodynamic interactions on spinodal decomposition kinetics is described. For small wavevectors, the rate of decomposition is decreased as a result of hydrodynamic interactions, while at larger wavevectors the rate of decomposition is increased, and the critical wavevector is shifted upwards. For short-ranged attractions these effects are...

article

Singularities in multifractal turbulence dissipation networks and their degeneration

A. Bershadskii, C.H. Gibson

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 3-4 > 251-260

We suggest that large-scale turbulence dissipation is concentrated along caustic networks (that appear due to vortex sheet instability in three-dimensional space), leading to an effective fractal dimension D _e _f _f = 53 of the network backbone (without caustic singularities) and a turbulence intermittency exponent μ = 16. If there are singularities on these caustic networks then D...

article

The best student of an Ising perceptron

E. Eisenstein

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 3-4 > 308-313

We suggest a set of questions the student of an Ising perceptron can ask in order to achieve perfect generalization at the lower bound known from information theory. We also show that before that point is reached the generalization performance of this set combined with the Bayes strategy is optimal.

article

3D Ising model with Swendsen-Wang dynamics: a parallel approach

M. Bauernfeind, R. Hackl, H.-G. Matuttis, J. Singer, more

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 3-4 > 277-298

We propose an efficient parallel implementation of the Swendsen-Wang algorithm for a 3D Ising system. A modified relaxation method was used for the parallelization. The simulations were performed on the Intel Paragon. We discuss the implementation in detail.

article

Thermal waves in an extended hydrodynamic approach

Áurea R. Vasconcellos, Roberto Luzzi, David Jou, José Casas-Vazquez

Physica A: Statistical Mechanics and its Applications > 1994 > 212 > 3-4 > 369-381

A study of the question of heat propagation in an extended quantum hydrodynamic approach is presented. We consider a fluid of Fermi particles in interaction with a thermal bath of bosons. The equation of evolution for the flux of energy, which is incorporated as a basic thermodynamic variable thus extending the space of variables of linear thermodynamics, is derived via the nonequilibrium statistical...

Publication date

Set your own date range

Year

2018 (919)
2017 (1,043)
2016 (1,095)
2015 (757)
2014 (890)
2013 (683)
2012 (708)
2011 (509)
2010 (653)
2009 (558)
2008 (722)
2007 (1,064)
2006 (923)
2005 (834)
2004 (1,000)
2003 (875)
2002 (781)
2001 (660)
2000 (662)
1999 (645)
1998 (650)
1997 (655)
1996 (485)
1995 (395)
1994 (29)
more

Content availability

Available (16,784)
None (1,411)

Keywords

ECONOPHYSICS (606)
COMPLEX NETWORKS (418)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.40.+J (271)
COMPLEX NETWORK (244)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.40.-A (227)
PHASE TRANSITION (214)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.20.-Y (205)
SCALING (195)
ENTROPY (186)
ISING MODEL (181)
TRAFFIC FLOW (178)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.50.+Q (177)
PHASE TRANSITIONS (167)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.70.LN (164)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 02.50.-R (157)
PERCOLATION (156)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 87.10.+E (144)
DIFFUSION (143)
SYNCHRONIZATION (143)
COMPLEX SYSTEMS (142)
CHAOS (137)
CELLULAR AUTOMATA (136)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.90.+M (135)
NETWORKS (127)
STOCHASTIC PROCESSES (127)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.70.FH (126)
SCALE-FREE NETWORKS (123)
DETRENDED FLUCTUATION ANALYSIS (122)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 02.50.EY (119)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.45.-A (118)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 89.90.+N (114)
MONTE CARLO SIMULATION (110)
HURST EXPONENT (105)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 64.60.CN (105)
ANOMALOUS DIFFUSION (104)
MONTE CARLO SIMULATIONS (104)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 87.23.GE (104)
FINANCIAL MARKETS (103)
SELF-ORGANIZED CRITICALITY (103)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 64.60.AK (103)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.65.+B (102)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 89.65.GH (102)
FRACTALS (101)
TIME SERIES (99)
POWER LAW (96)
BROWNIAN MOTION (95)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.45.TP (95)
PACS (94)
STOCHASTIC RESONANCE (87)
STOCK MARKET (87)
KINETIC THEORY (85)
NETWORK (84)
PATTERN FORMATION (82)
VOLATILITY (82)
TIME SERIES ANALYSIS (81)
TSALLIS ENTROPY (81)
COMMUNITY STRUCTURE (80)
PHASE DIAGRAM (79)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.30.-D (79)
COMMUNITY DETECTION (78)
RANDOM WALK (77)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.45.+B (77)
COOPERATION (76)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.20.DD (75)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 75.10.HK (75)
COMPLEXITY (74)
SOCIAL NETWORKS (74)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 89.40.+K (74)
CLUSTERING (73)
MULTIFRACTALITY (73)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 02.50.LE (73)
MINORITY GAME (72)
CELLULAR AUTOMATON (70)
CRITICAL EXPONENTS (70)
MONTE CARLO (70)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 89.75.-K (70)
FRACTAL (69)
EVOLUTION (67)
MOLECULAR DYNAMICS (67)
SOCIOPHYSICS (67)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 05.70.JK (66)
OPINION DYNAMICS (65)
SCALE-FREE NETWORK (65)
CRITICAL PHENOMENA (64)
NOISE (64)
FRACTAL DIMENSION (63)
LONG-RANGE INTERACTIONS (63)
TURBULENCE (63)
STATISTICAL MECHANICS (62)
TSALLIS STATISTICS (62)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 64.60.HT (62)
POPULATION DYNAMICS (60)
RANDOM WALKS (60)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 64.60.-I (60)
STABILITY (59)
COMPLEX NETWORKS (58)
SIMULATION (57)
SELF-ORGANIZATION (56)
CORRELATIONS (55)
FLUCTUATIONS (55)
more

INFONA - science communication portal

Physica A: Statistical Mechanics and its Applications

Quasiscalar map for a kicked spin 12

Application of a constrained-transfer-matrix method to metastability in the d = 2 Ising ferromagnet

Collective behaviour in a cellular automaton and isotropy of the neighbourhood

Stretching of material lines and surfaces in systems with Lagrangian chaos

Microscopic vortices in classical liquids

Solid on solid model for adsorption on self-affine substrate: a transfer matrix approach

A single-variable integral representation of the Ising model partition function

High-frequency viscosity of a dilute polydisperse colloidal suspension

Generalized Langevin equation with chaotic force

Spreading of damage in the Domany-Kinzel cellular automaton: a mean-field approach

Discrete Bargmann and Neumann systems and finite-dimensional integrable systems

First passage time problems and resonant behavior on a fluctuating lattice

Quantitative analysis of superconductivity in the Hg-cuprates. Comparison with the Tl ₂ -series

Exact two-cell correlations in random cellular structures generated from a 2D Ising ferromagnet

Translational symmetry and microscopic preparation in oscillator models of quantum dissipation

Spinodal decomposition of colloidal systems: the effect of hydrodynamic interactions

Singularities in multifractal turbulence dissipation networks and their degeneration

The best student of an Ising perceptron

3D Ising model with Swendsen-Wang dynamics: a parallel approach

Thermal waves in an extended hydrodynamic approach

Filter options

Publication date

Year

Content availability

Keywords

INFONA - science communication portal

Physica A: Statistical Mechanics and its Applications

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Year

Content availability

Keywords

Reporting an error / abuse

Sending the report failed

Accessibility options