Matrix Cosmology
arXiv:hep-th/0309138 · doi:10.1088/1126-6708/2004/04/055
Abstract
Exact time-dependent solutions of c=1 string theory are described using the free fermion formulation. One such class of solutions describes draining of the Fermi sea and has a spacetime interpretation as closed string tachyon condensation. A second class of solutions, corresponding to droplets of Fermi liquid orbiting in phase space, describes closed cosmologies which bounce through singularities.
21 pages, 6 figures, v2: added references, minor additions and corrections