Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.7k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR2.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.3k papers
- Charles UniversityCZ2.3k papers
- Institute for High Energy PhysicsES2.3k papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR2.2k papers
- The Ohio State UniversityUS2.1k papers
- Universidad Autónoma de MadridES2.1k papers
- Rutherford Appleton LaboratoryGB2.1k papers
- European Organization for Nuclear ResearchCH2.1k papers
- University of Wisconsin–MadisonUS2.1k papers
- Joint Institute for Nuclear ResearchRU2k papers
15 papers · 2 filters
Self-organized criticality as an absorbing-state phase transition
Ronald Dickman, Alessandro Vespignani, Stefano Zapperi
We explore the connection between self-organized criticality and phase transitions in models with absorbing states. Sandpile models are found to exhibit criticality only when a pai…
Logarithmic Clustering in Submonolayer Epitaxial Growth
P. L. Krapivsky, J. F. F. Mendes, S. Redner
We investigate submonolayer epitaxial growth with a fixed monomer flux and irreversible aggregation of adatom islands due to their effective diffusion. When the diffusivity D_k of…
Mean Field Theory of Polynuclear Surface Growth
E. Ben-Naim, A. R. Bishop, I. Daruka +1
We study statistical properties of a continuum model of polynuclear surface growth on an infinite substrate. We develop a self-consistent mean-field theory which is solved to deduc…
Stochastic Feedback and the Regulation of Biological Rhythms
Plamen Ch. Ivanov, Luis A. N. Amaral, Ary Goldberger +1
We propose a general approach to the question of how biological rhythms spontaneously self-regulate, based on the concept of ``stochastic feedback''. We illustrate this approach by…
Alternating Kinetics of Annihilating Random Walks Near a Free Interface
L. Frachebourg, P. L. Krapivsky, S. Redner
The kinetics of annihilating random walks in one dimension, with the half-line x>0 initially filled, is investigated. The survival probability of the nth particle from the interfac…
How self-organized criticality works: A unified mean-field picture
Alessandro Vespignani, Stefano Zapperi
We present a unified mean-field theory, based on the single site approximation to the master-equation, for stochastic self-organized critical models. In particular, we analyze in d…
Volatility distribution in the S&P500 Stock Index
Pierre Cizeau, Yanhui Liu, Martin Meyer +2
We study the volatility of the S&P500 stock index from 1984 to 1996 and find that the volatility distribution can be very well described by a log-normal function. Further, using de…
Stationary Velocity Distributions in Traffic Flows
E. Ben-Naim, P. L. Krapivsky
We introduce a traffic flow model that incorporates clustering and passing. We obtain analytically the steady state characteristics of the flow from a Boltzmann-like equation. A si…
Wealth Distributions in Models of Capital Exchange
S. Ispolatov, P. L. Krapivsky, S. Redner
A dynamical model of capital exchange is introduced in which a specified amount of capital is exchanged between two individuals when they meet. The resulting time dependent wealth…
Power Law Scaling for a System of Interacting Units with Complex Internal Structure
L. A. N. Amaral, S. V. Buldyrev, S. Havlin +2
We study the dynamics of a system composed of interacting units each with a complex internal structure comprising many subunits. We consider the case in which each subunit grows in…
Survival Probability in a Random Velocity Field
Sidney Redner
The time dependence of the survival probability, S(t), is determined for diffusing particles in two dimensions which are also driven by a random unidirectional zero-mean velocity f…
Correlations in Economic Time Series
Yanhui Liu, Pierre Cizeau, Martin Meyer +2
The correlation function of a financial index of the New York stock exchange, the S&P 500, is analyzed at 1 min intervals over the 13-year period, Jan 84 -- Dec 96. We quantify the…
Domain Statistics in Coarsening Systems
P. L. Krapivsky, E. Ben-Naim
We study the domain number and size distributions in the one-dimensional Ising and -state Potts models subject to zero-temperature Glauber dynamics. The survival probability of…
Scaling behavior in economics: II. Modeling of company growth
S. V. Buldyrev, L. A. N. Amaral, S. Havlin +5
In the preceding paper we presented empirical results describing the growth of publicly-traded United States manufacturing firms within the years 1974--1993. Our results suggest th…
Scaling behavior in economics: I. Empirical results for company growth
L. A. N. Amaral, S. V. Buldyrev, S. Havlin +5
We address the question of the growth of firm size. To this end, we analyze the Compustat data base comprising all publicly-traded United States manufacturing firms within the year…