D2-brane Chern-Simons theories: F-maximization = a-maximization

Abstract

We study a system of N D2-branes probing a generic Calabi-Yau three-fold singularity in the presence of a non-zero quantized Romans mass n. We argue that the low-energy effective N = 2 Chern-Simons quiver gauge theory flows to a superconformal fixed point in the IR, and construct the dual AdS_4 solution in massive IIA supergravity. We compute the free energy F of the gauge theory on S^3 using localization. In the large N limit we find F = c(nN)^{1/3}a^{2/3}, where c is a universal constant and a is the a-function of the "parent" four-dimensional N = 1 theory on N D3-branes probing the same Calabi-Yau singularity. It follows that maximizing F over the space of admissible R-symmetries is equivalent to maximizing a for this class of theories. Moreover, we show that the gauge theory result precisely matches the holographic free energy of the supergravity solution, and provide a similar matching of the VEV of a BPS Wilson loop operator.

19 pages; v2: minor corrections

References in corpus (7)

• N=6 superconformal Chern-Simons-matter theories, M2-branes and their gravity duals
• Notes on SUSY Gauge Theories on Three-Sphere
• The string origin of dyonic $\mathcal{N}=8$ supergravity and its simple Chern-Simons duals
• Moduli spaces of Chern-Simons quiver gauge theories and AdS_4/CFT_3
• New supersymmetric AdS4 type II vacua
• Perturbing gauge/gravity duals by a Romans mass
• N=2 solutions of massive type IIA and their Chern-Simons duals

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