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arxiv: 0710.1628 · v2 · submitted 2007-10-09 · ✦ hep-th

A stable vacuum of the tachyonic E8 string

classification ✦ hep-th
keywords stringtheorydilatongaugegroupspacetimestablestate
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We consider tachyon condensation in unstable ten-dimensional heterotic string theory with gauge group E8. In the background of a lightlike linear dilaton rolling to weak coupling, we find an exact solution in which the theory decays to a stable ground state. The final state represents a new, modular-invariant perturbative string theory, tachyon-free in nine spacetime dimensions with a spacelike dilaton gradient, E8 gauge group and no spacetime supersymmetry.

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Cited by 4 Pith papers

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