BIBFRAME Work

Title

Dynamics of the box-ball system with random initial conditions via Pitman's transformation

Type

• Monograph
• Text

Contribution

• Sasada, Makiko (author )
• Croydon, David A. (author )
• Tsujimoto, Satoshi (author )
• Kato, Tsuyoshi, 1961- (author )

Subject

• Dynamical systems and ergodic theory -- Topological dynamics -- Cellular automata (MSC)
• Topological dynamics (LCSH)
• Probability theory and stochastic processes -- Stochastic processes -- Sums of independent random variables; random walks (MSC)
• Cellular automata (LCSH)
• Probability theory and stochastic processes -- Markov processes -- Markov chains (discrete-time Markov processes on discrete state spaces) (MSC)
• Statistical mechanics, structure of matter -- Equilibrium statistical mechanics -- None of the above, but in this section (MSC)
• Pitman's measure of closeness (LCSH)
• Ergodic theory (LCSH)
• Probability theory and stochastic processes -- Markov processes -- Brownian motion (MSC)
• Stochastic processes (LCSH)

Language

• English

Illustrative Content

• illustrations

Classification

• 60J10
• 37B15
• LCC: QA267.5.C45 C76 2023 (Assigner: dlc) (Status: used by assigner)
• 60G50
• 82B99
• DDC: 511.3/5 (Assigner: dlc)
• 60J65

Content

• text

Supplementary content

• bibliography

Summary

"The box-ball system (BBS), introduced by Takahashi and Satsuma in 1990, is a cellular automaton that exhibits solitonic behaviour. In this article, we study the BBS when started from a random two-sided infinite particle configuration. For such a model, Ferrari et al. recently showed the invariance in distribution of Bernoulli product measures with density strictly less than 1/2 , and gave a soliton decomposition for invariant measures more generally. We study the BBS dynamics using the transformation of a nearest neighbour path encoding of the particle configuration given by 'reflection in the past maximum', which was famously shown by Pitman to connect Brownian motion and a three-dimensional Bessel process. We use this to characterise the set of configurations for which the dynamics are well-defined and reversible (i.e. can be inverted) for all times. The techniques developed to understand the deterministic dynamics are subsequently applied to study the evolution of the BBS from a random initial configuration. Specifically, we give simple sufficient conditions for random initial conditions to be invariant in distribution under the BBS dynamics, which we check in several natural examples, and also investigate the ergodicity of the relevant transformation. Furthermore, we analyse various probabilistic properties of the BBS that are commonly studied for interacting particle systems, such as the asymptotic behavior of the integrated current of particles and of a tagged particle. Finally, for Bernoulli product measures with parameter p [up arrow] 1/2 (which may be considered the 'high density' regime), the path encoding we consider has a natural scaling limit, which motivates the introduction of a new continuous version of the BBS that we believe will be of independent interest as a dynamical system"-- Provided by publisher.

Table of Contents

Path encodings of the BBS -- Random initial configurations -- Connections with Pitman's theorem and exclusion processes -- BBS on R -- Open questions

Authorized Access Point

Croydon, David A. Dynamics of the box-ball system with random initial conditions via Pitman's transformation

Admin Metadata

• Date: 2026-09-11T20:15:42.915516+00:00
• Agent: cbc
• Status: c
• Derived from: 23056530

Admin Metadata

• Date: 2026-09-11
• Cataloger id: Unknown
• Description level: http://id.loc.gov/ontologies/bibframe-2-6-0/
• Description language: eng
• Description authentication: pcc