A "Lagrangian" for the E7 Superconformal Theory

Understand

We find an N=1 gauge theory that flows to the rank-one N=2 superconformal field theory with $E_7$ flavor symmetry.

• We first obtain a Lagrangian description for the $R_{0, N}$ theory, which appears in the S-dual description of the SU(N) gauge theory with 2N fundamental hypermultiplets.
• This is a straightforward generalization of the proposed Lagrangian description for the $E_6$ theory.
• The $E_7$ theory is then obtained via partial Higgsing of the $R_{0, 4}$ theory.