Klein-Gordon equation in higher dimensions via Feynman propagator with the modified second type Pöschl-Teller potential

Recently, the Feynman approach has been used to study the solution of the D-dimensional Klein-Gordon equation under equal scalar and vector modified second type Pöschl-Teller potentials. Approximation has been made to the centrifugal term and space-time transformation is used to deal easily with the difficult computation problem. We found that there are positive energy states for bound states based on the condition \(\tilde{\lambda }>\tilde{\eta }+1\) $\tilde{\lambda }>\tilde{\eta }+1$ for the wave functions. The results are in agreement with those obtained by using other methods found in the literature.