Closed String Radiation from the Interaction of the Moving D$p$-branes with Background Fields

TL;DR

This paper derives the boundary state for moving Dp-branes with background fields and calculates the resulting closed string radiation amplitude, analyzing its behavior at large distances within bosonic string theory.

Contribution

It introduces a new boundary state formulation for moving Dp-branes with background fields and computes the associated closed string radiation amplitude.

Findings

Radiation amplitude depends on brane separation and background fields.

Large distance behavior of the radiation amplitude is characterized.

Framework is within bosonic string theory.

Abstract

At first, we derive a boundary state, associated with a moving D$p$-brane, in the presence of the Kalb-Ramond field and a $U(1)$ gauge potential. Then, from the interaction of such D$p$-branes, we obtain the radiation amplitude for a massless closed string. The behavior of the radiation amplitude for the large distance of the branes will be studied. Our calculations is in the framework of the bosonic string theory.