FOCUS: Decoupling Expert Personas in LLMs to Enhance Domain Expert Capabilities

The paper, arXiv:2608.05611, identifies a key limitation in existing persona control methods: cross-domain coupling, where activating an expert persona in one domain leaks behaviors into another, causing overly aggressive responses in healthcare or excessive conservatism in financial trading. FOCUS decouples expert personas to mitigate these issues, enhancing task accuracy and domain expertise. The approach is relevant for applications requiring calibrated behavior across multiple specialized domains. Future work may explore integrating FOCUS with other prompt engineering or fine-tuning techniques.