Non-minimal coupling of scalar fields in the dark sector and generalization of the top-hat collapse Priyanka Saha, Dipanjan Dey and Kaushik Bhattacharya Eur. Phys. J. C, 85 4 (2025) 384 Published online: 04 April 2025 DOI: 10.1140/epjc/s10052-025-14080-6