title: Membranes on an orbifold.
abstract: We provide an M theory interpretation of the recently discovered N=8 supersymmetric Chern-Simons theory with SO(4) gauge symmetry. The theory is argued to describe two membranes moving in the orbifold R8/Z2. At level k=1 and k=2, the classical moduli space M coincides with the infrared moduli space of SO(4) and SO(5) super Yang-Mills theory, respectively. For higher Chern-Simons level, the moduli space is a quotient of M. At a generic point in the moduli space, the massive spectrum is proportional to the area of the triangle formed by the two membranes and the orbifold fixed point.
authors.affiliation: Department of Mathematics, Kings College London, United Kingdom.
authors.forename: Neil
authors.initials: N
authors.lastname: Lambert
authors.forename: David
authors.initials: D
authors.lastname: Tong