Understanding the open string pair production of the Dp/D0 system

A bstract Consider a system consisting of D p and D p ′, placed parallel at a separation and with p − p ′ = 2 n (assuming p ≥ p ′, the integer n ≥ 0 and p ′ > 0). When either D p or D p ′ carries a worldvolume electric flux, one in general expects a non-vanishing open string pair production due to the pair of virtual open string/anti open string connecting the two D branes under the action of the applied flux. However, this will not be true for p ′ = 0 and p = 2 , 4 , 6 when the D p carries a pure electric flux. In this note, we will explore the case for which a finite non-vanishing open string pair production rate can indeed be produced when a certain worldvolume flux is applied to the Dp brane and understand the physics behind.