Anomaly-Mediation and Sequestering from a Higher-Dimensional viewpoint
Minho Son, Raman Sundrum

TL;DR
This paper presents a five-dimensional supergravity model that achieves anomaly-mediated supersymmetry breaking with radius stabilization, providing a transparent higher-dimensional perspective and addressing issues like tachyonic sleptons.
Contribution
It introduces a higher-dimensional framework for anomaly mediation that naturally incorporates sequestering and stabilization, improving understanding and control over supersymmetry breaking mechanisms.
Findings
Successfully combines anomaly-mediation with radius stabilization.
Addresses tachyonic slepton problem via boundary-to-boundary gravity loops.
Ensures suppression of dangerous stabilizing field loops.
Abstract
We study a five-dimensional supergravity model with boundary-localized visible sector exhibiting anomaly-mediated supersymmetry breaking, in which the central requirements of sequestering and radius stabilization are achieved perturbatively. This makes it possible to understand these various mechanisms in a more integrated and transparent fashion, mostly from the higher-dimensional viewpoint. Local supersymmetry, in the presence of visible sector quantum effects, is enforced by the formalism of the five-dimensional superconformal tensor calculus. The construction results in only mild warping, which allows a natural supersymmetry-breaking mediation mechanism of (finite) boundary-to-boundary gravity loops to co-dominate with anomaly-mediation, thereby solving the latter's tachyonic slepton problem. We make the non-trivial check that this can occur while dangerous loops of stabilizing…
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