Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 11, Pages -Publisher
SPRINGER
DOI: 10.1088/1126-6708/2009/11/125
Keywords
Brane Dynamics in Gauge Theories; Gauge-gravity correspondence; AdS-CFT Correspondence
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Aharony, Bergman, Jafferis, and Maldacena have proposed that the low-energy description of multiple M2-branes at C-4/Z(k) singularity is a (2+1)-dimensional N = 6 supersymmetric U(N-c) x U(N-c) Chern-Simons matter theory, the ABJM theory. In the large-N-c limit, its holographic dual is supergravity in AdS(4) x S-7/Z(k). 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.
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