Lost in Translation: The Challenge of Mixed-Language Search

A new study reveals that current information retrieval systems struggle significantly when faced with queries that blend multiple languages, exposing a critical weakness in real-world multilingual search.


![At weak coupling, the calculated light-matter entanglement entropy closely matches a quasi-linear prediction [latex] (42) [/latex] for the Su-Schrieffer-Heeger ground state with [latex] t_{1} = 1 [/latex] and [latex] t_{2} = 0 [/latex], though deviations emerge at stronger coupling as additional dipole sectors become distinguishable.](https://arxiv.org/html/2604.18670v1/x3.png)
