A coincident D-brane - anti-D-brane pair has a tachyonic mode. We present an argument showing that at the classical minimum of the tachyonic potential the negative energy density associated with the potential exactly cancels the sum of the tension of the brane and the anti-brane, thereby giving a configuration of zero energy density and restoring space-time supersymmetry.
Journal of High Energy Physics
- Pub Date:
- August 1998
- High Energy Physics - Theory
- LaTeX file, 6 pages, few lines have been added explaining why SO(32) spinor states in type I theory correspond to tachyonic kink solution on D-string anti-D-string pair