Shock Waves and Cosmological Matrix Models

Abstract

We find the shock wave solutions in a class of cosmological backgrounds with a null singularity, each of these backgrounds admits a matrix description. A shock wave solution breaks all supersymmetry meanwhile indicates that the interaction between two static D0-branes cancel, thus provides basic evidence for the matrix description. The probe action of a D0-brane in the background of another suggests that the usual perturbative expansion of matrix model breaks down.

10 pages, harvmav, v2: some comments on instability added, v3: version to appear in JHEP

References in corpus (2)

• A Matrix Big Bang
• A Class of Cosmological Matrix Models

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