The content discusses the challenges in understanding the stability of anti-D3-brane supersymmetry breaking in the Klebanov-Strassler (KS) throat background, and proposes to use open-closed superstring field theory as a systematic approach to study this problem.
The key points are:
The Klebanov-Strassler solution provides a promising background to study supersymmetry breaking in string theory, as it features an extreme hierarchy between the UV and confining scales. Placing a stack of anti-D3-branes at the tip of the KS throat can break supersymmetry.
However, understanding the stability of this supersymmetry breaking is challenging in the conventional supergravity approach, due to the lack of proper understanding of the D-brane action and the difficulty in computing α' and gs corrections.
The author proposes to use open-closed superstring field theory as a systematic approach to study the string perturbation theory of the KS solution. This allows for unambiguous computations of on-shell quantities in Ramond-Ramond backgrounds, and avoids the challenges of extracting the off-shell supergravity action.
By combining the large radius expansion of the deformed conifold with a double scaling limit near the tip, the author shows that the KS solution can be understood as a perturbation from the deformed conifold in the large volume limit in string field theory.
The author then studies the anti-D3-brane supersymmetry breaking in this string field theory framework, solving the perturbative background solution up to third order in the large radius expansion, and finds agreement with the previous supergravity analysis.
To Another Language
from source content
arxiv.org
Deeper Inquiries