Universal fragmentation in annihilation reactions with constrained kinetics
Artikel i vetenskaplig tidskrift, 2024

In reaction-diffusion models of annihilation reactions in low dimensions, single-particle dynamics provides a bottleneck for reactions, leading to an anomalously slow approach to the empty state. Here, we construct a reaction model with a reciprocal bottleneck of reactions on particle dynamics in which single-particle motion conserves the center of mass. We show that such a constrained reaction-diffusion dynamics does not approach an empty state but freezes at late times in a state with fragmented particle clusters. The late-time dynamics and final density are universal, and we provide exact results for the final density in the large-reaction rate limit. Thus, our setup constitutes a minimal model for the fragmentation of a one-dimensional lattice into independent particle clusters. We suggest that the universal reaction dynamics could be observable in experiments with cold atoms or in the Auger recombination of exciton gases.

Författare

Enrique Rozas Garcia

Göteborgs universitet

Alfred Weddig Karlsson

Student vid Chalmers

Johannes Hofmann

Stockholms universitet

Göteborgs universitet

Physical Review Research

26431564 (ISSN)

Vol. 6 3 L032071

Ämneskategorier

Atom- och molekylfysik och optik

Den kondenserade materiens fysik

DOI

10.1103/PhysRevResearch.6.L032071

Mer information

Senast uppdaterat

2024-11-05