Contents

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 November 29, 2019 at 11:43:51. See the history of this page for a list of all contributions to it.