Kinetics of diffusion-controlled annihilation with sparse initial conditions
Abstract
Here, we study diffusion-controlled single-species annihilation with sparse initial conditions. In this random process, particles undergo Brownian motion, and when two particles meet, both disappear. We also focus on sparse initial conditions where particles occupy a subspace of dimension δ that is embedded in a larger space of dimension d. Furthermore, we find that the co-dimension Δ = d - δ governs the behavior. All particles disappear when the co-dimension is sufficiently small, Δ ≤ 2; otherwise, a finite fraction of particles indefinitely survive. We establish the asymptotic behavior of the probability S(t) that a test particle survives until time t. When the subspace is a line, δ = 1, we find inverse logarithmic decay, $$S\sim {(\mathrm{ln}t)}^{-1}$$, in three dimensions, and a modified power-law decay, $$S\sim (\mathrm{ln}t){t}^{-1/2}$$, in two dimensions. In general, the survival probability decays algebraically when Δ < 2, and there is an inverse logarithmic decay at the critical co-dimension Δ = 2.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division and Center for Nonlinear Studies
- Boston Univ., MA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1337109
- Report Number(s):
- LA-UR-16-25627
Journal ID: ISSN 1751-8113
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. A, Mathematical and Theoretical
- Additional Journal Information:
- Journal Volume: 49; Journal Issue: 50; Journal ID: ISSN 1751-8113
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING; Mathematics
Citation Formats
Ben-Naim, Eli, and Krapivsky, Paul. Kinetics of diffusion-controlled annihilation with sparse initial conditions. United States: N. p., 2016.
Web. doi:10.1088/1751-8113/49/50/504005.
Ben-Naim, Eli, & Krapivsky, Paul. Kinetics of diffusion-controlled annihilation with sparse initial conditions. United States. https://doi.org/10.1088/1751-8113/49/50/504005
Ben-Naim, Eli, and Krapivsky, Paul. Fri .
"Kinetics of diffusion-controlled annihilation with sparse initial conditions". United States. https://doi.org/10.1088/1751-8113/49/50/504005. https://www.osti.gov/servlets/purl/1337109.
@article{osti_1337109,
title = {Kinetics of diffusion-controlled annihilation with sparse initial conditions},
author = {Ben-Naim, Eli and Krapivsky, Paul},
abstractNote = {Here, we study diffusion-controlled single-species annihilation with sparse initial conditions. In this random process, particles undergo Brownian motion, and when two particles meet, both disappear. We also focus on sparse initial conditions where particles occupy a subspace of dimension δ that is embedded in a larger space of dimension d. Furthermore, we find that the co-dimension Δ = d - δ governs the behavior. All particles disappear when the co-dimension is sufficiently small, Δ ≤ 2; otherwise, a finite fraction of particles indefinitely survive. We establish the asymptotic behavior of the probability S(t) that a test particle survives until time t. When the subspace is a line, δ = 1, we find inverse logarithmic decay, $S\sim {(\mathrm{ln}t)}^{-1}$, in three dimensions, and a modified power-law decay, $S\sim (\mathrm{ln}t){t}^{-1/2}$, in two dimensions. In general, the survival probability decays algebraically when Δ < 2, and there is an inverse logarithmic decay at the critical co-dimension Δ = 2.},
doi = {10.1088/1751-8113/49/50/504005},
journal = {Journal of Physics. A, Mathematical and Theoretical},
number = 50,
volume = 49,
place = {United States},
year = {Fri Dec 16 00:00:00 EST 2016},
month = {Fri Dec 16 00:00:00 EST 2016}
}
Web of Science
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Works referencing / citing this record:
Annihilation of single-species charged particles based on Dyson gas dynamics
journal, January 2020
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Annihilation of single-species charged particles based on the Dyson gas dynamics
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