# Thermal nucleation in perturbation theory

- Institution: CERN
- Department: TH institutes
- Speaker: Joonas Hirvonen
- Year: 2025
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3021119)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Cosmological first-order phase transitions may have generated an observable gravitational wave background, providing a unique window into physics beyond the Standard Model. A crucial step in predicting this background is the reliable computation of bubble nucleation rates. In this talk, I will discuss how techniques, such as effective field theories, Boltzmann equations and real-time simulations, enhance our understanding of perturbative nucleation rate computations in high-temperature quantum field theories, leading to more robust predictions. I will also highlight remaining challenges in perturbative methods, outlining directions for future progress in this field..

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## Lectures

1. [Thermal nucleation in perturbation theory](https://invisiblenetwork.ai/learn/cern/3021119/f6d7852d28f4), 46 min (CERN's player)