# Primordial Gravitational Waves in the Cosmic Bubble Chamber

## TL;DR

This paper investigates how relic gravitational waves could influence the timing of the primordial quark-hadron phase transition by modulating bubble cavitation rates, potentially causing the transition to occur earlier.

## Contribution

It introduces a novel mechanism where gravitational waves affect the primordial phase change, highlighting their potential impact on early universe cosmology.

## Key findings

- Gravitational waves modulate local pressures during the phase transition.
- This modulation can significantly alter the bubble cavitation rate.
- The phase transition may have occurred earlier due to this effect.

## Abstract

We explore the effect of relic gravitational waves on the primordial phase change from the quark-gluon plasma into the low density hadron gas that occurred approximately $10^{-5}$s after the beginning. We show that the gravitational wave, through doing work on the fluid, modulates the local volumes, causing a pressure modulation which either suppresses or boosts the bubble cavitation rate. The boosted rate is significant, implying that the phase transition could have occurred earlier than if this interaction is not considered.