Three-Dimensional N \geq 5 Superconformal Chern-Simons Gauge Theories And Their Relations

TL;DR

This paper constructs and relates various three-dimensional N≥5 superconformal Chern-Simons gauge theories, including new U(1)×U(1) models, and explores their symmetries, derivations, and moduli spaces, extending the understanding of M2-brane theories.

Contribution

It introduces new U(1)×U(1) superconformal theories, relates them to existing models, and analyzes their symmetries and moduli spaces, broadening the landscape of M2-brane gauge theories.

Findings

Proposed new U(1)×U(1) superconformal theories with specific matter content.

Derived all N≥5 superconformal theories from known models, except two cases.

Connected the U(1)×U(1) theory to D2-branes via the Higgs mechanism.

Abstract

We propose three-dimensional N=6 superconformal U(N) X U(M) and SU(N) X SU(N) Chern-Simons gauge theories with two pairs of bifundamental chiral superfields in the (N, M) and (\overline{N}, \overline{M}) representations and in the (N, N) and (\overline{N}, \overline{N}) representations, respectively. We also propose the superconformal U(1) X U(1) gauge theories that have n pairs of bifundamental chiral superfields with U(1) X U(1) charges (\pm 1, \mp 1) or (\pm 1, \pm 1). Although these U(1) X U(1) gauge theories have global symmetry SU(2n), the R-symmetry is SO(6) for n=2, and might be SO(2n) or SO(2n+1) for 3 \leq n \leq 8. In addition, we show that from either the generalized ABJM theories, or our U(N) X U(M) theories, or the N=5 superconformal O(N) X USp(2M) gauge theories, we can derive all the N \geq 5 superconformal Chern-Simons gauge theories except the N=5 superconformal G_2 X USp(2) gauge theory and our U(1) X U(1) gauge theories with n \not= 2 and 4. Furthermore, we derive the three-dimensional N=8 superconformal U(1) X U(1) gauge theory from the BLG theory, and study the corresponding moduli space. With the novel Higgs mechanism in the unitary gauge, we suggest that it describes a D2-brane and a decoupled D2-brane.