A matrix big bang

作者：Craps B^*; Sethi S; Verlinde E

来源：The Journal of High Energy Physics, 2005, 2005(10): 005.

DOI：10.1088/1126-6708/2005/10/005

• models of quantum gravity
• M(atrix) theories
• superstrings and heterotic strings

The light-like linear dilaton background represents a particularly simple time-dependent 1/2 BPS solution of critical type-IIA superstring theory in ten dimensions. Its lift to M-theory, as well as its Einstein frame metric, are singular in the sense that the geometry is geodesically incomplete and the Riemann tensor diverges along a light-like subspace of codimension one. We study this background as a model for a big bang type singularity in string theory/M-theory. We construct the dual Matrix theory description in terms of a (1+1)-d supersymmetric Yang-Mills theory on a time-dependent world-sheet given by the Milne orbifold of (1+1)-d Minkowski space. Our model provides a framework in which the physics of the singularity appears to be under control.

• 出版日期2005-10