Tachyon condensation and background independent superstring field theory

Tachyon Condensation and Background Independent Superstring Field Theory

We study quantum corrections at the one loop level in open superstring tachyon condensation using the boundary string field theory (BSFT) method. We find that the tachyon field action has the same form as at the disc level, but with a renormalized effective coupling λ = g s e −T /4 (g s is the renormalized dimensionless closed string coupling, e /4 is the tachyonic field expectation value) and ...

Tachyon Condensation in Cubic Superstring Field Theory

It has been conjectured that at the stationary point of the tachyon potential for the non-BPS D-brane or brane-anti-D-brane pair of superstring theories, the negative energy density cancels the brane tension. We study this conjecture using a cubic superstring field theory with insertion of a double-step inverse picture changing operator. We compute the tachyon potential on levels 1 and 4, obtai...

Tachyon Condensation in Superstring Field Theory

It has been conjectured that at the stationary point of the tachyon potential for the Dbrane-anti-D-brane pair or for the non-BPS D-brane of superstring theories, the negative energy density cancels the brane tensions. We study this conjecture using a Wess-ZuminoWitten-like open superstring field theory free of contact term divergences and recently shown to give 60% of the vacuum energy by cond...

00 1 Tachyon Condensation in Cubic Superstring Field Theory

It has been conjectured that at the stationary point of the tachyon potential for the non-BPS D-brane or brane-anti-D-brane pair, the negative energy density cancels the brane tension. We study this conjecture using a cubic superstring field theory with insertion of a double-step inverse picture changing operator. We compute the tachyon potential on levels 1 and 4. On the first level we obtain ...

Remarks on Tachyon Condensation in Superstring Field Theory