Gravitational induced particle production through a nonminimal curvature–matter coupling Tiberiu Harko, Francisco S. N. Lobo, José P. Mimoso and Diego Pavón Eur. Phys. J. C, 75 8 (2015) 386 Published online: 25 August 2015 DOI: 10.1140/epjc/s10052-015-3620-5