The Overshoot Problem and Giant Structures

TL;DR

This paper discusses how a string theory-based solution to the small-field inflation overshoot problem predicts giant overdense regions, which could serve as observable evidence for string theory if detected.

Contribution

It introduces a novel prediction that resolving the overshoot problem in inflation models implies the existence of large-scale structures detectable observationally.

Findings

Prediction of giant overdense regions of at least 110 Mpc radius

Potential observational evidence linking large structures to string theory

Connection between inflation resolution and cosmic structure formation

Abstract

Models of small-field inflation often suffer from the overshoot problem. A particularly efficient resolution to the problem was proposed recently in the context of string theory. We show that this resolution predicts the existence of giant spherically symmetric overdense regions with radius of at least 110 Mpc. We argue that if such structures will be found they could offer an experimental window into string theory.