# nLab massive type IIA supergravity

Contents

### Context

#### Gravity

gravity, supergravity

supersymmetry

# Contents

## Idea

What is called massive type IIA supergravity or Romans supergravity (due to Romans 86) is a deformation of plain type IIA supergravity in which the B-field acquires a mass-term.

## Properties

### Lift to string theory

The lift of Romans supergravity to to string theory is known as massive type IIA string theory, where the mass term is identified with the RR-field flux form of degree 0 (or of degree 10 by Hodge duality) which reflects the presence of D8-branes.

### Black D8-brane solutions

The mass term makes Romans supergravity have black brane-solutions corresponding to D8-branes

## References

### Black branes

#### D8-branes

As a black brane the D8-brane was identified as a solution to Romans supergravity/massive type IIA string theory in

#### D6-D8-brane bound states

With emphasis on charge quantization of the RR-field flux forms via bundle gerbes:

#### D6-D8-brane bound states with D2-D4-brane defects

On black$\;$D6-D8-brane bound states in massive type IIA string theory, with defect D2-D4-brane bound states inside them realizing AdS3-CFT2 “inside” AdS7-CFT6:

#### D4-D8-brane bound states with D2-D6-brane defects

On black$\;$D4-D8-brane bound states in massive type IIA string theory, with defect D2-D6-brane bound states inside them realizing AdS3-CFT2 “inside” AdS7-CFT6:

Last revised on December 23, 2019 at 07:19:11. See the history of this page for a list of all contributions to it.