# Minimal $D=4$ truncations of type IIA

## TL;DR

This paper constructs consistent minimal truncations of four-dimensional $ ext{AdS}_4$ supergravities with $ ext{N}=2$ and $ ext{N}=3$ supersymmetry from the maximal $ ext{N}=8$ supergravity with dyonic ISO(7) gauging, and uplifts them to ten-dimensional massive type IIA supergravity.

## Contribution

It provides explicit consistent truncations of $ ext{N}=2$ and $ ext{N}=3$ supergravities from $ ext{N}=8$ ISO(7) gauged supergravity and performs their uplift to ten dimensions.

## Key findings

- Successful truncation to minimal $ ext{N}=2$ and $ ext{N}=3$ supergravities.
- Explicit uplift formulas to ten-dimensional massive type IIA supergravity.
- Identification of scalar and gauge field configurations at specific vacua.

## Abstract

Consistent embeddings are found of the minimal $\mathcal{N} = 2$ and $\mathcal{N} = 3$ gauged supergravities in four dimensions into its maximally supersymmetric, $\mathcal{N} = 8$, counterpart with a dyonic ISO(7) gauging. These minimal truncations retain the metric along with relevant U(1) and SO(3) R-symmetry gauge fields selected from the ISO(7) ones. The remaining ISO(7) gauge fields are turned off, with subtleties introduced by the dyonic gauging, and the scalars are fixed to their expectation values at the $\mathcal{N} = 2$ and $\mathcal{N} = 3$ vacua of the $\mathcal{N} = 8$ theory. Using the truncation formulae for massive type IIA supergravity on the six-sphere to $D=4$ $\mathcal{N} = 8$ ISO(7) supergravity, the minimal $D=4$ $\mathcal{N} = 2$ and $\mathcal{N} = 3$ gauged supergravities are then uplifted consistently to ten dimensions.