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Fundamental Strings in Open String Theory at the Tachyonic Vacuum

Ashoke Sen
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Abstract

We show that the world-volume theory on a D-p-brane at the tachyonic vacuum has solitonic string solutions whose dynamics is governed by the Nambu-Goto action of a string moving in (25+1) dimensional space-time. This provides strong evidence for the conjecture that at this vacuum the full (25+1) dimensional Poincare invariance is restored. We also use this result to argue that the open string field theory at the tachyonic vacuum must contain closed string excitations.

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Ashoke Sen. 2000-10-30. Fundamental Strings in Open String Theory at the Tachyonic Vacuum. https://doi.org/10.1063/1.1377037

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