# A model of dynamical SUSY breaking

## TL;DR

This paper presents a model where dynamical supersymmetry breaking occurs in a hidden sector with a specific chiral representation, leading to implications for particle physics and cosmology, including dark energy and superpartner effects.

## Contribution

It introduces a novel SUSY breaking mechanism via a composite field in a specific SU(5) representation, linking it to cosmological phenomena like dark energy.

## Key findings

- Dynamical SUSY breaking occurs in a hidden sector with a specific chiral representation.
- The composite field influences the vacuum energy and superpartner masses.
- The model suggests a connection between SUSY breaking and dark energy via a quintessential axion.

## Abstract

Supersymmetric (SUSY) models and dynamical breaking of symmetries have been used to explain hierarchies of mass scales. We find that a chiral representation, $\overline{\bf 10}\, \oplus\, \overline{\bf 5}\, \oplus\, 2\cdot{\bf 5}$ in SUSY SU(5) in the hidden sector, breaks global SUSY dynamically, by producing a composite field $\phi$ below the SU(5) confinement scale. This dynamincal SUSY breaking can have two important applications, one in particle physics and the other in cosmology. Gavitational effects transmit this dynamical breaking to the standard model(SM) superpartners and the quintessential vacuum energy. The SM superpartners feel the effects just by the magnitude of the gravitino mass while the smallness of the quintessential vacuum energy is due to the composite nature of a singlet field $\phi$. The composite $\phi$ carries a global charge which is hardly broken in SUSY and hence its phase can be used toward a quintessential axion for dark energy of the Universe.