Junctions and the fate of branes in external fields Original Research Article

We discuss the processes of brane bubble nucleation induced by external branes. The quasiclassical solution for the nucleation by a single external brane has been found in the case when brane junctions are possible. The exponential factor in the production rate has been calculated. The process induced by the fundamental or D-string in the background of two D3-branes is analyzed and its interpretation from the D3 world-volume theory viewpoint is described.