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
25 papers · 2 filters
Intra-molecular coupling as a mechanism for a liquid-liquid phase transition
Giancarlo Franzese, Manuel I. Marques, H. Eugene Stanley
We study a model for water with a tunable intra-molecular interaction , using mean field theory and off-lattice Monte Carlo simulations. For all , the model display…
Dynamics of Sleep-Wake Transitions During Sleep
Chung-Chuan Lo, Luis A. Nunes Amaral, Shlomo Havlin +4
We study the dynamics of the awakening during the night for healthy subjects and find that the wake and the sleep periods exhibit completely different behavior: the durations of wa…
Heterogeneous aging in spin glasses
Horacio E. Castillo, Claudio Chamon, Leticia F. Cugliandolo +1
We introduce a set of theoretical ideas that form the basis for an analytical framework capable of describing nonequilibrium dynamics in glassy systems. We test the resulting scena…
Nontrivial Velocity Distributions in Inelastic Gases
P. L. Krapivsky, E. Ben-Naim
We study freely evolving and forced inelastic gases using the Boltzmann equation. We consider uniform collision rates and obtain analytical results valid for arbitrary spatial dime…
Correlation Differences in Heartbeat Fluctuations During Rest and Exercise
Roman Karasik, Nir Sapir, Yosef Ashkenazy +4
We study the heartbeat activity of healthy individuals at rest and during exercise. We focus on correlation properties of the intervals formed by successive peaks in the pulse wave…
Extreme Value Statistics and Traveling Fronts: An Application to Computer Science
Satya N. Majumdar, P. L. Krapivsky
We study the statistics of height and balanced height in the binary search tree problem in computer science. The search tree problem is first mapped to a fragmentation problem whic…
The Potential Energy Landscape and Mechanisms of Diffusion in Liquids
T. Keyes, J. Chowdhary
The mechanism of diffusion in supercooled liquids is investigated from the potential energy landscape point of view, with emphasis on the crossover from high- to low-T dynamics. Mo…
Stable Distributions in Stochastic Fragmentation
P. L. Krapivsky, E. Ben-Naim, I. Grosse
We investigate a class of stochastic fragmentation processes involving stable and unstable fragments. We solve analytically for the fragment length density and find that a generic…
A Random Matrix Approach to Cross-Correlations in Financial Data
V. Plerou, P. Gopikrishnan, B. Rosenow +3
We analyze cross-correlations between price fluctuations of different stocks using methods of random matrix theory (RMT). Using two large databases, we calculate cross-correlation…
Scaling in the growth of geographically subdivided populations: invariant patterns from a continent-wide biological survey
Timothy H. Keitt, Luis A. N. Amaral, Sergey V. Buldyrev +1
We consider statistical patterns of variation in growth rates for over 400 species of breeding birds across North America surveyed from 1966 to 1998. We report two results. First,…
Quantifying Stock Price Response to Demand Fluctuations
Vasiliki Plerou, Parameswaran Gopikrishnan, Xavier Gabaix +1
We address the question of how stock prices respond to changes in demand. We quantify the relations between price change over a time interval and two different measures of…
Behavioral-Independent Features of Complex Heartbeat Dynamics
Luis A. Nunes Amaral, Plamen Ch. Ivanov, Naoko Aoyagi +5
We test whether the complexity of cardiac interbeat interval time series is simply a consequence of the wide range of scales characterizing human behavior, especially physical acti…
The Web of Human Sexual Contacts
Fredrik Liljeros, Christofer R. Edling, Luis A. Nunes Amaral +2
Many ``real-world'' networks are clearly defined while most ``social'' networks are to some extent subjective. Indeed, the accuracy of empirically-determined social networks is a q…
Random Fibonacci Sequences
Clément Sire, Paul L. Krapivsky
Solutions to the random Fibonacci recurrence x_{n+1}=x_{n} + or - Bx_{n-1} decrease (increase) exponentially, x_{n} = exp(lambda n), for sufficiently small (large) B. In the limits…
Dissolution in a field
W. Hwang, S. Redner
We study the dissolution of a solid by continuous injection of reactive ``acid'' particles at a single point, with the reactive particles undergoing biased diffusion in the dissolv…
Extremal properties of random trees
E. Ben-Naim, P. L. Krapivsky, Satya N. Majumdar
We investigate extremal statistical properties such as the maximal and the minimal heights of randomly generated binary trees. By analyzing the master evolution equations we show t…
Freezing in Ising Ferromagnets
V. Spirin, P. L. Krapivsky, S. Redner
We investigate the final state of zero-temperature Ising ferromagnets which are endowed with single-spin flip Glauber dynamics. Surprisingly, the ground state is generally not reac…
A Stochastic Model of Human Gait Dynamics
Yosef Ashkenazy, Jeffrey M. Hausdorff, Plamen Ch. Ivanov +2
We present a stochastic model of gait rhythm dynamics, based on transitions between different ``neural centers'', that reproduces distinctive statistical properties of normal human…
Criticality in confined ionic fluids
J. E. Flores-Mena, Marcia C. Barbosa, Yan Levin
A theory of a confined two dimensional electrolyte is presented. The positive and negative ions, interacting by a potential, are constrained to move on an interface separatin…
Decomposition of Heartbeat Time Series: Scaling Analysis of the Sign Sequence
Y. Ashkenazy, P. Ch. Ivanov, S. Havlin +4
The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. We show that the sign sequence, a simple binary rep…
Spin wave specific heat in quasiperiodic Fibonacci structures
C. G. Bezerra, E. L. Albuquerque, A. M. Mariz +2
The energy spectra of a variety of collective modes on quasiperiodic structures exhibit a complex fractal profile. Among the modes that have attracted particular attention in this…
Generic mechanism for generating a liquid-liquid phase transition
Giancarlo Franzese, Gianpietro Malescio, Anna Skibinsky +2
Recent experimental results indicate that phosphorus, a single-component system, can have two liquid phases: a high-density liquid (HDL) and a low-density liquid (LDL) phase. A fir…
Nonlinear Network Dynamics on Earthquake Fault Systems
Paul B. Rundle, John B. Rundle, Kristy F. Tiampo +3
Earthquake faults occur in networks that have dynamical modes not displayed by single isolated faults. Using simulations of the network of strike-slip faults in southern California…
Percolation Threshold, Fisher Exponent, and Shortest Path Exponent for 4 and 5 Dimensions
Gerald Paul, Robert M. Ziff, H. Eugene Stanley
We develop a method of constructing percolation clusters that allows us to build very large clusters using very little computer memory by limiting the maximum number of sites for w…