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Moving Branes with Background Massless and Tachyon Fields in the Compact Spacetime
In this article we shall obtain the boundary state associated with a moving
-brane in the presence of the Kalb-Ramond field , an internal
U(1) gauge field and a tachyon field, in the compact spacetime.
According to this state, properties of the brane and a closed string, with
mixed boundary conditions emitted from it, will be obtained. Using this
boundary state we calculate the interaction amplitude of two moving
and -branes with above background fields in a partially compact
spacetime. They are parallel or perpendicular to each other. Properties of the
interaction amplitude will be analyzed and contribution of the massless states
to the interaction will be extracted.Comment: 13 pages, Latex, no figur