Half-maximal consistent truncations using exceptional field theory

TL;DR

This paper develops a method using exceptional field theory to perform consistent truncations of 10- and 11-dimensional supergravity to seven dimensions, enabling new reductions to heterotic double field theory.

Contribution

It introduces a novel approach for constructing half-maximal truncations and extends techniques to connect supergravity with heterotic double field theory.

Findings

Constructed half-maximal gauged supergravity in 7D from higher dimensions.

Demonstrated reduction of exceptional field theory to heterotic double field theory.

Provided a systematic framework for consistent truncations using exceptional field theory.

Abstract

We show how to construct half-maximal consistent truncations of 10- and 11-dimensional supergravity to seven dimensions using exceptional field theory. This procedure gives rise to a seven-dimensional half-maximal gauged supergravity coupled to $n$ vector multiplets, with $n \neq 3$ in general. We also show how these techniques can be used to reduce exceptional field theory to heterotic double field theory.