Study of growth matter index and cosmic implications in dynamical Chern–Simons modified gravity Abdul Jawad, Shamaila Rani, Saba Qummer and Amir Sharif Eur. Phys. J. C, 81 8 (2021) 715 Published online: 10 August 2021 DOI: 10.1140/epjc/s10052-021-09489-8