String Pair Creations in D-brane Systems

TL;DR

This paper explores the conditions under which open string pair creation occurs in D-brane systems, revealing that anti-D-brane configurations exhibit more intense pair creation and discussing various configurations and paradoxes related to the phenomenon.

Contribution

It provides a criterion for string pair creation in D-brane systems and analyzes the effects of background fields, including duality transformations and paradox resolution.

Findings

Pair creation occurs under specific background field conditions.

Anti-D-brane systems show more intense pair creation.

Various configurations like spacelike scissors and angled D-strings are analyzed.

Abstract

We investigate the criterion, on the Born-Infeld background fields, for the open string pair creation to occur in D$p$-(anti-)D$p$-brane systems. Although the pair creation occurs generically in both D$p$-D$p$ and D$p$-anti-D$p$ systems for the cases which meet the criterion, it is more drastic in D$p$-anti-D$p$-brane systems by some exponential factor depending on the background fields. Various configurations exhibiting pair creations are obtained via duality transformations. These include the spacelike scissors and two D-strings (slanted at different angles) passing through each other. We raise the scissors paradox and suggest a resolution based on the triple junction in IIB setup.