  In this article, we investigate zero-modes for a dynamical (rotating-moving)
D$p$-brane, coupled to the electromagnetic and tachyonic background fields.
This work is done by the boundary state methods, in three cases of bosonic and
fermionic boundary states and superstring partition function. By analyzing the
obtained zero-modes in either of the cases, interesting results will be
obtained. Our findings demonstrate the importance of the zero-mode and its
effects on the background fields and the defined internal properties of the
described system.
