# Induced correlations and rupture of molecular chaos by anisotropic dissipative Janus hard disks

## TL;DR

This paper investigates how anisotropic inelastic collisions in Janus hard disks induce correlations and disrupt molecular chaos, revealing differences from elastic systems and highlighting singular collision behaviors.

## Contribution

It introduces a model of anisotropic Janus disks and analyzes how anisotropy affects collision correlations and molecular chaos breaking.

## Key findings

- Anisotropy causes induced correlations in the system.
- Collision behaviors differ significantly from elastic disk systems.
- Singular behaviors are observed in collisions and pre-collisional correlations.

## Abstract

A system of smooth "frozen" Janus-type disks is studied. Such disks cannot rotate and are divided by their diameter into two sides of different inelasticities. Taking as a reference a system of colored elastic disks, we find differences in the behavior of the collisions once the anisotropy is included. A homogeneous state, akin to the homogeneous cooling state of granular gases, is seen to arise and the singular behavior of both the collisions and the precollisional correlations are highlighted.