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

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A stable vacuum of the tachyonic E8 string

Simeon Hellerman , Ian Swanson
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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 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The Art of Branching: Cobordism Junctions of 10d String Theories

    hep-th 2026-03 conditional novelty 7.0

    Explicit worldsheet constructions of 9d junctions joining several 10d string theories via generalized RG flow interpolations and closed tachyon condensation, providing dynamical realizations of multi-theory cobordisms.