TL;DR
This paper introduces cosmic bubble collisions within false-vacuum eternal inflation, discussing their physical implications and observational prospects, and presents a new Einstein's equations solution modeling post-collision bubble universes with vacuum energy and radiation.
Contribution
It provides an accessible overview of bubble collision physics and introduces a novel solution to Einstein's equations for bubble universes after collisions.
Findings
Discussion of observational signatures of bubble collisions
Introduction of a new Einstein's equations solution for post-collision universes
Analysis of vacuum energy and radiation effects in bubble collisions
Abstract
I briefly review the physics of cosmic bubble collisions in false-vacuum eternal inflation. My purpose is to provide an introduction to the subject for readers unfamiliar with it, focussing on recent work related to the prospects for observing the effects of bubble collisions in cosmology. I will attempt to explain the essential physical points as simply and concisely as possible, leaving most technical details to the references. I make no attempt to be comprehensive or complete. I also present a new solution to Einstein's equations that represents a bubble universe after a collision, containing vacuum energy and ingoing null radiation with an arbitrary density profile.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.