Bubbles, Strings and Other Quirks in the Early Universe @itelescopewebinars

Uploaded March 2023 | Updated September 2026, 2 weeks ago

Guest Speaker: Anna Kormu, Ph.D. student, University of Helsinki
Summary: In this video, you will learn about cosmic strings, bubbles, gravitational waves, and phase transitions. Anna explains these concepts and describes how theoretical physicists construct a model for the very early universe using these concepts.
If you are interested in theoretical physics and the early universe, this video will help you better understand these concepts. We hope you enjoy it!

Chapters
0:00 Introduction
0:48 Poll question…What are cosmic strings?
2:38 The early universe 10X^-12 seconds
4:43 Gravitational Waves (GW)
7:59 Short history of GW
10:14 Phase transitions in the early universe
13:42 Bubbles
18:42 Cosmic Strings …Topological defects
22:14 Breaking the symmetry of the Universe
24:59 Cosmic Strings
28:42 Magnetic monopoles & Cosmic Strings
32:28 Primordial black holes
35:47 Can a signal be detected from these?
44:15 Conclusions

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