SPARC-RAG: Adaptive Sequential-Parallel Scaling with Context Management for Retrieval-Augmented Generation. - Yuxin Yang 010; Gangda Deng; Ömer Faruk Akgül; Nima Chitsazan; Yash Govilkar; Akasha Tigalappanavara; Shi-Xiong Zhang; Sambit Sahu; Viktor Prasanna 001 (CoRR, 2026)