Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-09-21
JHEP 0911:125,2009
Physics
High Energy Physics
High Energy Physics - Theory
60 pages, 1 figure; v2: minor corrections, added two references, version published in JHEP
Scientific paper
10.1088/1126-6708/2009/11/125
Aharony, Bergman, Jafferis, and Maldacena have proposed that the low-energy description of multiple M2-branes at a C4/Zk singularity is a (2+1)-dimensional N=6 supersymmetric U(Nc) x U(Nc) Chern-Simons matter theory, the ABJM theory. In the large-Nc limit, its holographic dual is supergravity in AdS4 x S7/Zk. We study various ways to add fields that transform in the fundamental representation of the gauge groups, i.e. flavor fields, to the ABJM theory. We work in a probe limit and perform analyses in both the supergravity and field theory descriptions. In the supergravity description we find a large class of supersymmetric embeddings of probe flavor branes. In the field theory description, we present a general method to determine the couplings of the flavor fields to the fields of the ABJM theory. We then study four examples in detail: codimension-zero N=3 supersymmetric flavor, described in supergravity by Kaluza-Klein monopoles or D6-branes; codimension-one N=(0,6) supersymmetric chiral flavor, described by D8-branes; codimension-one N=(3,3) supersymmetric non-chiral flavor, described by M5/D4-branes; codimension-two N=4 supersymmetric flavor, described by M2/D2-branes. Finally we discuss special physical equivalences between brane embeddings in M-theory, and their interpretation in the field theory description.
Ammon Martin
Erdmenger Johanna
Meyer Rene
O'Bannon Andy
Wrase Timm
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