Effects of a classical homogeneous gravitational field on the cavity-field entropy and generation of the Schrödinger-cat states in the Jaynes-Cummings modelM. Mohammadi, M. H. Naderi and M. SoltanolkotabiEur. Phys. J. D, 47 2 (2008) 295-302DOI: https://doi.org/10.1140/epjd/e2008-00046-x