The energy-momentum tensor of perturbed tachyon matter
arXiv:0901.3368 · doi:10.1103/PhysRevD.79.106005
Abstract
We add an initial nonhomogeneous perturbation to an otherwise homogeneous condensing tachyon background and compute its space time energy-momentum tensor from worldsheet string theory. We show that in the far future the energy-momentum tensor corresponds to nonhomogeneous pressureless tachyon matter.
arXiv comment8 pages. v2: minor corrections, to appear in PRD
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