Abstract
In this work we present the Duffin-Kemmer-Petiau (DKP) equation for massive spin-0 and spin-1 particles in curved space-time by considering a tow different cosmological model, a (1+1) dimensional Robertson-Walker and de Sitter space-time. The exact solution is determined for both cases, where the wave functions are expressed by the hyper geometric functions. As an application, the rate of the created particles in the presence of gravity is calculated via the Bogoliubov transformation technique.
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