In theoretical physics, an M5-brane is a fundamental brane of M-theory. As such, it can be described explicitly as a black brane solution[1] to eleven-dimensional supergravity, the low-energy limit of M-theory. In particular, it carries a magnetic charge under the 3-form gauge field of the 11-dimensional supergravity multiplet. The M5-brane is the electric-magnetic dual of the M2-brane.
Upon compactification, the M5-brane becomes either the D4-brane or the NS5-brane of type IIA supergravity, depending on whether the 11-dimensional theory is reduced along a direction parallel or orthogonal to the M5-brane, respectively.
The worldvolume theory on a stack of M5-branes at low energies is the six-dimensional N=(2,0) superconformal field theory (SCFT) with gauge algebra of the A-type.[2] Other gauge algebras can be realised by placing the stack of branes on a singularity.[3]
The PST model provides a Green-Schwarz description of the worldvolume physics of a single M5-brane.[4] On the other hand, direct knowledge of the non-Abelian case, for instance via a Lagrangian description, is not presently available, due to various technical difficulties. Since superconformal symmetry is only available in 6 or lower spacetime dimensions, this maximally supersymmetric theory may be used to derive an infinite number of other theories. Furthermore, via the AdS/CFT correspondence, the M5-brane worldvolume theory can be used to study M-theory on asymptotically Anti-de Sitter (AdS) spacetimes.
Despite the lack of a Lagrangian formulation, brane constructions provide evidence that the M5-brane worldvolume theory can support four- and two-codimensional solitonic excitations, namely self-dual strings and three-branes.
References
edit- ^ Gueven, Rahmi (1992). "Black p-brane solutions of D = 11 supergravity theory". Physics Letters B. 276 (49). doi:10.1016/0370-2693(92)90540-K.
- ^ Witten, Edward (1997). "Five-brane effective action in M-theory". Journal of Geometry and Physics. 22 (2): 103–133. arXiv:hep-th/9610234. doi:10.1016/S0393-0440(97)80160-X.
- ^ Ferrara, Sergio; Kehagias, Alexandros; Partouche, Hervé; Zaffaroni, Alberto (1998). "Membranes and Fivebranes with Lower Supersymmetry and their AdS Supergravity Duals". Physics Letters B. 431: 42–48. arXiv:hep-th/9803109. doi:10.1016/S0370-2693%2898%2900558-9.
- ^ Pasti, Paolo; Sorokin, Dmitri; Tonin, Mario (1997). "Covariant Action for a D = 11 Five-Brane with the Chiral Field". Physics Letters B. 398: 41. arXiv:hep-th/9701037. doi:10.1016/S0370-2693(97)00188-3.
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