On the spontaneous breakdown of Lorentz symmetry in matrix models of superstrings
On the spontaneous breakdown of Lorentz symmetry in matrix models of superstrings
In string or M theories, the spontaneous breaking of 10D or 11D Lorentz symmetry is required to describe our space-time. A direct approach to this issue is provided by the type IIB matrix model. We study its 4D version, which corresponds to the zero volume limit of 4D super $\mathrm{SU}(N)$ …