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The large N limit of M2-branes on Lens spaces

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arxiv 1204.1280 v1 pith:COT7U3EO submitted 2012-04-05 hep-th

The large N limit of M2-branes on Lens spaces

classification hep-th
keywords largeconnectionsenergyflatfreelenslimitm2-branes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the matrix model for N M2-branes wrapping a Lens space L(p,1) = S^3/Z_p. This arises from localization of the partition function of the ABJM theory, and has some novel features compared with the case of a three-sphere, including a sum over flat connections and a potential that depends non-trivially on p. We study the matrix model both numerically and analytically in the large N limit, finding that a certain family of p flat connections give an equal dominant contribution. At large N we find the same eigenvalue distribution for all p, and show that the free energy is simply 1/p times the free energy on a three-sphere, in agreement with gravity dual expectations.

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