TL;DR
This paper proposes a new supersymmetric and T-duality covariant action for non-BPS D-branes, demonstrating that tachyon condensation results in the Dirac-Born-Infeld action for BPS D-branes.
Contribution
It introduces a novel form of the non-BPS D-brane action that maintains supersymmetry and T-duality invariance, and connects tachyon condensation to BPS D-brane dynamics.
Findings
Proposed a manifestly supersymmetric and T-duality covariant non-BPS D-brane action.
Showed that tachyon condensation yields the Dirac-Born-Infeld action for BPS D-branes.
Established a link between non-BPS and BPS D-branes through tachyon dynamics.
Abstract
In this short note we would like to propose a form for the action of a non-BPS D-brane, which will be manifestly supersymmetric invariant and T-duality covariant. We also explicitly show that tachyon condensation on the world-volume of this brane leads to the Dirac-Born-Infeld action for BPS D(p-1)-brane.
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