Dark Energy Density in SUGRA models and degenerate vacua

Abstract

In N=1 supergravity the tree-level scalar potential of the hidden sector may have a minimum with broken local supersymmetry (SUSY) as well as a supersymmetric Minkowski vacuum. These vacua can be degenerate, allowing for a consistent implementation of the multiple point principle. The first minimum where SUSY is broken can be identified with the physical phase in which we live. In the second supersymmetric phase, in flat Minkowski space, SUSY may be broken dynamically either in the observable or in the hidden sectors inducing a tiny vacuum energy density. We argue that the exact degeneracy of these phases may shed light on the smallness of the cosmological constant. Other possible phenomenological implications are also discussed. In particular, we point out that the presence of such degenerate vacua may lead to small values of the quartic Higgs coupling and its beta function at the Planck scale in the physical phase.

Presented at the International Conference on Cosmology, Gravitational Waves and Particles, Singapore, 6-10 February, 2017

References in corpus (5)

• Investigating the near-criticality of the Higgs boson
• Neutralino Dark Matter Detection in Split Supersymmetry Scenarios
• Implementation of the Multiple Point Principle in the Two-Higgs Doublet Model of type II
• Fixed point scenario in the Two Higgs Doublet Model inspired by degenerate vacua
• Cosmological constant in SUGRA models with Planck scale SUSY breaking and degenerate vacua

Cited by in corpus (1)

• Predicting the SUSY breaking scale in SUGRA models with degenerate vacua