Enhancing photon generation in cavity through antiresonant terms of the vacuum Rabi coupling Mohamed Ridza Wahiddin, Rachid Belkada, Gharib Subhi Mahmoud and Azeddine Messikh Eur. Phys. J. Plus, 136 6 (2021) 650 Published online: 11 June 2021 DOI: 10.1140/epjp/s13360-021-01643-1