The D-brane in type II string theory of dimension $8+1$.
As black brane-solutions, D8-branes appear in massive type IIA supergravity (“Romans supergravity”)/massive type IIA string theory
(Bergshoess-de Roo-Green-Papadopoulos-Townsend 96, Chamblin-Perry 97, Janssen-Meessen-Ortin 99)
Since the normal n-sphere around a D8-brane (with its 9-dimensional worldvolume) in 10-dimensional spacetime is a 0-sphere, D8-brane charge is measured by the RR-field 0-flux form $F_0$. This behaves like a cosmological constant in the corresponding D=10 supergravity (“Romans supergravity”). Its presences changes ordinary type IIA string theory to what is called massive type IIA string theory, whose relation to the web of dualities in string theory remains not well understood. In particular the duality between type IIA string theory and M-theory remains ill-understood for massive type IIA string theory.
For the bound states and brane intersections involving D8-branes, see at
In geometric engineering of flavor physics in intersecting D-brane models, the flavour degrees of freedom come from open strings ending on spacetime-filling D-branes (Karch-Katz 02).
Specifically in the Sakai-Sugimoto model geometrically engineering something close to actual quantum chromodynamics (Sakai-Sugimoto 04, Sakai-Sugimoto 05), flavour is encoded in the presence of D8-branes in the model:
Here we are showing
with
the 5d Chern-Simons theory on their worldvolume
the corresponding 4d WZW model on the boundary
both exhibiting the meson fields;
(see at WSS-model – Baryons);
the Yang-Mills monopole D6-branes
(see at D6-D8-brane bound state);
the NS5-branes (often not considered here).
Table of branes appearing in supergravity/string theory (for classification see at brane scan).
As a black brane the D8 was identified as a solution to Romans supergravity/massive type IIA string theory in
See also
A. Chamblin, Malcolm Perry, Dynamic D8-branes in IIA string theory (arXiv:hep-th/9712112)
Bert Janssen, Patrick Meessen, Tomas Ortin, The D8-brane tied up: String and brane solutions in massive type IIA supergravity, Phys. Lett. B453 (1999) 229-236 (spire:494174, doi:10.1016/S0370-2693(99)00315-9)
On D6-D8-brane bound states in massive type IIA string theory:
Harvendra Singh, Duality symmetric massive type II theories in $D=8$ and $D=6$, JHEP 0204:017, 2002 (arXiv:hep-th/0109147)
Harvendra Singh, Note on (D6,D8) Bound State, Massive Duality and Non-commutativity, Nucl. Phys. B661 (2003) 394-408 (arXiv:hep-th/0212103)
geometric engineering of flavour physics on spacetime-filling D-branes in intersecting D-brane models (AdS/QCD) was originally understood in
and then developed in detail for QCD via D8-branes in the Sakai-Sugimoto model:
Tadakatsu Sakai, Shigeki Sugimoto, Low energy hadron physics in holographic QCD, Prog.Theor.Phys.113:843-882, 2005 (arXiv:hep-th/0412141)
Tadakatsu Sakai, Shigeki Sugimoto, More on a holographic dual of QCD, Prog.Theor.Phys.114:1083-1118, 2005 (arXiv:hep-th/0507073)
The role of the D8 in the K-theory-classification of D-branes is discussed in
John Schwarz, sections 6.2 and 6.3 of TASI Lectures on Non-BPS D-Brane Systems (arXiv:hep-th/9908144)
Ion V. Vancea, On the Algebraic K-theory of The Massive D8 and M9 Branes, Int. J. Mod. Phys. A16 (2001) 4429-4452 (arXiv:hep-th/9905034)
A lift of D8-branes to M-theory M-branes is proposed in
Last revised on November 15, 2019 at 09:10:26. See the history of this page for a list of all contributions to it.