String Network from M-theory

TL;DR

This paper investigates string junctions and networks in Type IIB string theory by constructing M-theory membrane embeddings, highlighting supersymmetry, charge conservation, tension balance, and energy properties.

Contribution

It provides a unified construction of string junctions in M-theory, clarifying their supersymmetry, charge, tension, and energy characteristics.

Findings

String junctions preserve supersymmetry.

No binding energy is associated with the junctions.

Holomorphic embeddings describe the configurations.

Abstract

We study the three string junctions and string networks in Type IIB string theory by explicity constructing the holomorphic embeddings of the M-theory membrane that describe such configurations. The main feature of them such as supersymmetry, charge conservation and balance of tensions are derived in a more unified manner. We calculate the energy of the string junction and show that there is no binding energy associated with the junction.