A Simple Solution to the Polonyi Problem in Gravity Mediation

TL;DR

This paper proposes a novel solution to the Polonyi problem in gravity mediation by coupling the Polonyi field to a pseudo modulus with a large inflationary expectation value, offering a viable cosmological model.

Contribution

It introduces a new mechanism where the Polonyi field's coupling to a pseudo modulus during inflation resolves the longstanding cosmological issues.

Findings

The model effectively suppresses the Polonyi field's problematic effects.

Explicit construction of a gravity mediation-compatible scenario.

Discussion on generating mass parameters via strong gauge dynamics.

Abstract

The Polonyi field is a necessary ingredient in any viable scenario of gravity mediated supersymmetry breaking. However, it is known that the presence of the Polonyi field leads to several serious cosmological problems, which are collectively referred to as the Polonyi problem. We show that the Polonyi problem can be solved if the Polonyi field couples to a pseudo modulus in the superpotential and this pseudo modulus has a large field expectation value during inflation. To illustrate our idea, we construct an explicit model which can be readily connected to scenarios of gravity mediation. The generation of the mass parameters contained in our model by strong gauge dynamics is also commented on.