# Polariton chimeras: Bose-Einstein condensates with intrinsic chaoticity and spontaneous long-range ordering

## TL;DR

This paper explores how cavity polaritons can spontaneously form ordered and chaotic patterns, called chimeras, without external feedback or non-local interactions, revealing new mechanisms of pattern formation in quantum fluids.

## Contribution

It introduces a novel mechanism for chimera formation in polariton systems that does not rely on time delays or non-local interactions.

## Key findings

- Spontaneous symmetry breaking leads to phase locking and internal ordering.
- Periodic spin and intensity patterns exhibit long-range order.
- Patterns can be partially chaotic and form in homogeneous media.

## Abstract

The system of cavity polaritons driven by a plane electromagnetic wave is found to undergo the spontaneous breaking of spatial symmetry, which results in a lifted phase locking with respect to the driving field and, consequently, in the possibility of internal ordering. In particular, periodic spin and intensity patterns arise in polariton wires; they exhibit strong long-range order and can serve as media for signal transmission. Such patterns have the properties of dynamical chimeras: they are formed spontaneously in perfectly homogeneous media and can be partially chaotic. The reported new mechanism of chimera formation requires neither time-delayed feedback loops nor non-local interactions.