Spontaneous SUSY breaking with anomalous U(1) symmetry in metastable vacua and moduli stabilization

TL;DR

This paper demonstrates that anomalous U(1) gauge theories can have metastable vacua where supersymmetry is spontaneously broken without U(1)_R symmetry, and introduces a new moduli stabilization scenario.

Contribution

It reveals the existence of metastable SUSY-breaking vacua in anomalous U(1) theories with generic interactions and proposes a novel moduli stabilization mechanism.

Findings

Metastable vacua with SUSY breaking exist without U(1)_R symmetry.

Hierarchies like Yukawa can be explained by small FI parameters.

A new moduli stabilization scenario is proposed.

Abstract

We show that in (anomalous) U(1) gauge theories with the Fayet-Iliopoulos (FI) term and with generic interactions there are meta-stable vacua in which supersymmetry (SUSY) is spontaneously broken even without U(1)_R symmetry and various hierarchical structures, for example, Yukawa hierarchy, can be explained by the smallness of the FI parameter. When we introduce generic interactions, i.e., all interactions including higher dimensional interactions which are allowed by the symmetry of the theory with O(1) coefficients, various scales can be determined by the symmetry (U(1) charges of the introduced fields). We examine how to determine the various scales, the vacuum expectation values (VEVs), and the scales of F-term and of D-term. Moreover, we propose a new scenario for the stabilization of the moduli in the SUSY breaking models.