Five-Branes in Heterotic Brane-World Theories

TL;DR

This paper derives the effective five-dimensional heterotic M-theory action with five-branes, analyzing its properties and resulting four-dimensional theories, including moduli and gauge functions, from a systematic reduction of Horava-Witten theory.

Contribution

It provides a systematic derivation of the five-dimensional heterotic M-theory effective action with five-branes and analyzes the resulting four-dimensional theories.

Findings

Explicit form of the five-dimensional N=1 gauged supergravity

Determination of the moduli Kahler potential and gauge-kinetic functions

Relations between four-dimensional superfields and five-dimensional fields

Abstract

The effective action for five-dimensional heterotic M-theory in the presence of five-branes is systematically derived from Horava-Witten theory coupled to an M5-brane world-volume theory. This leads to a five-dimensional N=1 gauged supergravity theory on S^1/Z_2 coupled to four-dimensional N=1 theories residing on the two orbifold fixed planes and an additional bulk three-brane. We analyse the properties of this action, particularly the four-dimensional effective theory associated with the domain-wall vacuum state. The moduli Kahler potential and the gauge-kinetic functions are determined along with the explicit relations between four-dimensional superfields and five-dimensional component fields.