Towards a gauge invariant volume-weighted probability measure for eternal inflation

TL;DR

This paper proposes an improved, gauge-invariant volume-weighted probability measure for eternal inflation, yielding simple and expected results across studied models.

Contribution

It introduces a new gauge-invariant measure for eternal inflation that simplifies calculations and aligns with intuitive expectations.

Findings

Produces gauge-invariant results in studied models

Simplifies the calculation of probabilities in eternal inflation

Aligns with intuitive expectations

Abstract

An improved volume-weighted probability measure for eternal inflation is proposed. For the models studied in this paper it leads to simple and intuitively expected gauge-invariant results.